commit b5895194d9e1ffce54b326ddfe9595e5111e6eb4
Author: Wojciech Mizia <miziawojciech@gmail.com>
Date:   Mon Jun 3 15:51:58 2024 +0200

    add template files

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e99bc4d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,28 @@
+### Java ###
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+### Maven ###
+target/
+pom.xml.tag
+pom.xml.releaseBackup
+pom.xml.versionsBackup
+pom.xml.next
+release.properties
+dependency-reduced-pom.xml
+buildNumber.properties
+
+.idea
+
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..2b38930
--- /dev/null
+++ b/README.md
@@ -0,0 +1,49 @@
+# XSLT-repository-tasks:
+
+## Use http://tools.release11.com/xml/xslt to transform xml and copy result from the site to corresponding file in solutions directory.
+
+
+### 1. Take XML with books and calculate number of all books available. By following the guidelines below:
+1. The XSLT file during transformation will receive src/main/resources/xml/book.xml as input.
+2. The output resulting from the transformation should look like this file src/main/resources/output/1-available-books.xml.
+
+### 2. Take XML with books data and generate HTML web page with table of books. Sort books based on book name. By following the guidelines below:
+1. The XSLT file during transformation will receive src/main/resources/xml/book.xml as input.
+2. The output resulting from the transformation should look like this file src/main/resources/output/2-table-of-books.html.
+
+### 3. Take XML file with authors data and change original namespace to “http://marklogicacademy.ml/library/authors/v2”. By following the guidelines below:
+1. The XSLT file during transformation will receive src/main/resources/xml/author.xml as input.
+2. The output resulting from the transformation should look like this file src/main/resources/output/3-authors-namespace.xml.
+
+### 4. Take XML file with authors and generate file with dead authors. By following the guidelines below:
+1. The XSLT file during transformation will receive src/main/resources/xml/author.xml as input.
+2. The output resulting from the transformation should look like this file src/main/resources/output/4-death-authors.xml.
+
+### 5. Take XML file with authors and calculate the average age in which authors wrote their first book. By following the guidelines below:
+1. The XSLT file during transformation will receive src/main/resources/xml/author.xml as input.
+2. To use the src/main/resources/xml/book.xml file in the transformation load it to a variable in XSLT.
+3. The returned value must be of type Duration.
+4. The output resulting from the transformation should look like this file src/main/resources/output/5-average-authors-age.xml.
+
+### 6. Take XML file with books and generate file with not available books. By following the guidelines below:
+1. The XSLT file during transformation will receive src/main/resources/xml/book.xml as input.
+2. The output resulting from the transformation should look like this file src/main/resources/output/6-not-available-books.xml.
+
+### 7. Take XML with authors, join XML with books data and save the data in single file. By following the guidelines below:
+1. The XSLT file during transformation will receive src/main/resources/xml/author.xml as input.
+2. To use the src/main/resources/xml/book.xml file in the transformation load it to a variable in XSLT.
+3. The output resulting from the transformation should look like this file src/main/resources/output/7-authors-with-books.xml.
+
+### 8. Take XML file with authors data and books data and generate new file with authors who wrote more than 3 books. By following the guidelines below:
+1. The XSLT file during transformation will receive src/main/resources/xml/author.xml as input.
+2. To use the src/main/resources/xml/book.xml file in the transformation load it to a variable in XSLT.
+3. The output resulting from the transformation should look like this file src/main/resources/output/8-who-wrote-more-than-3-books.xml.
+
+### 9. Take XML with authors data and transform all attributes into elements. New elements should inherit namespace of parent element. By following the guidelines below:
+1. The XSLT file during transformation will receive src/main/resources/xml/author.xml as input.
+2. The output resulting from the transformation should look like this file src/main/resources/output/9-attributes-into-elements.xml.
+
+### 10. Take XML with history of book borrows and generate file with top 3 most popular books. By following the guidelines below:
+1. The XSLT file during transformation will receive src/main/resources/xml/book.xml as input.
+2. To use the src/main/resources/xml/author.xml file in the transformation load it to a variable in XSLT.
+3. The output resulting from the transformation should look like this file src/main/resources/output/10-most-popular-books.xml.
diff --git a/pom.xml b/pom.xml
new file mode 100644
index 0000000..4826c32
--- /dev/null
+++ b/pom.xml
@@ -0,0 +1,96 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.r11.xsd</groupId>
+    <artifactId>xsd</artifactId>
+    <version>1.0</version>
+
+    <properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <version>5.9.0</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <version>5.9.0</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.eclipse.jgit</groupId>
+            <artifactId>org.eclipse.jgit</artifactId>
+            <version>6.3.0.202209071007-r</version>
+        </dependency>
+
+        <!-- Jsch from jgit dependency is not supported [RSA 2048] so we need use mwiede fork. -->
+        <dependency>
+            <groupId>org.eclipse.jgit</groupId>
+            <artifactId>org.eclipse.jgit.ssh.jsch</artifactId>
+            <version>6.3.0.202209071007-r</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>com.jcraft</groupId>
+                    <artifactId>jsch</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>com.github.mwiede</groupId>
+            <artifactId>jsch</artifactId>
+            <version>0.2.4</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.eclipse.jgit</groupId>
+            <artifactId>org.eclipse.jgit.ssh.apache</artifactId>
+            <version>6.3.0.202209071007-r</version>
+        </dependency>
+        <dependency>
+            <groupId>jaxb</groupId>
+            <artifactId>activation</artifactId>
+            <version>1.0.2</version>
+        </dependency>
+        <dependency>
+            <groupId>javax.xml.bind</groupId>
+            <artifactId>jaxb-api</artifactId>
+            <version>2.3.0</version>
+        </dependency>
+        <dependency>
+            <groupId>com.sun.xml.bind</groupId>
+            <artifactId>jaxb-core</artifactId>
+            <version>2.3.0</version>
+        </dependency>
+        <dependency>
+            <groupId>com.sun.xml.bind</groupId>
+            <artifactId>jaxb-impl</artifactId>
+            <version>2.3.0</version>
+        </dependency>
+        <dependency>
+            <groupId>jaxen</groupId>
+            <artifactId>jaxen</artifactId>
+            <version>1.2.0</version>
+        </dependency>
+        <dependency>
+            <groupId>net.sf.saxon</groupId>
+            <artifactId>Saxon-HE</artifactId>
+            <version>11.4</version>
+        </dependency>
+        <dependency>
+            <groupId>xml-resolver</groupId>
+            <artifactId>xml-resolver</artifactId>
+            <version>1.2</version>
+        </dependency>
+    </dependencies>
+</project>
\ No newline at end of file
diff --git a/src/main/resources/output/.gitkeep b/src/main/resources/output/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/src/main/resources/output/1-available-books.xml b/src/main/resources/output/1-available-books.xml
new file mode 100644
index 0000000..87cf1c2
--- /dev/null
+++ b/src/main/resources/output/1-available-books.xml
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<count>9</count>
diff --git a/src/main/resources/output/10-most-popular-books.xml b/src/main/resources/output/10-most-popular-books.xml
new file mode 100644
index 0000000..5ca18b8
--- /dev/null
+++ b/src/main/resources/output/10-most-popular-books.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<popularity>
+   <book position="1">
+      <bookId>1</bookId>
+      <borrowCount>3</borrowCount>
+      <name>Hamlet</name>
+   </book>
+   <book position="2">
+      <bookId>3</bookId>
+      <borrowCount>2</borrowCount>
+      <name>Harry Potter and the Sorcerer's Stone</name>
+   </book>
+   <book position="3">
+      <bookId>2</bookId>
+      <borrowCount>1</borrowCount>
+      <name>Macbeth</name>
+   </book>
+</popularity>
diff --git a/src/main/resources/output/2-table-of-books.html b/src/main/resources/output/2-table-of-books.html
new file mode 100644
index 0000000..25cf568
--- /dev/null
+++ b/src/main/resources/output/2-table-of-books.html
@@ -0,0 +1,99 @@
+<!DOCTYPE html
+  PUBLIC "XSLT-compat">
+<html xmlns:b="http://www.demo.com">
+   <body>
+      <h1>Books</h1>
+      <table>
+         <tr>
+            <th>Book</th>
+            <th>Date</th>
+            <th>Availability</th>
+         </tr>
+         <tr>
+            <td>Hamlet</td>
+            <td>2001-05-04</td>
+            <td>false</td>
+         </tr>
+         <tr>
+            <td>Macbeth</td>
+            <td>2000-12-13</td>
+            <td>false</td>
+         </tr>
+         <tr>
+            <td>Harry Potter and the Sorcerer's Stone</td>
+            <td>2005-04-29</td>
+            <td>true</td>
+         </tr>
+         <tr>
+            <td>The Long Walk</td>
+            <td>2018-07-01</td>
+            <td>true</td>
+         </tr>
+         <tr>
+            <td>Misery</td>
+            <td>2018-01-31</td>
+            <td>true</td>
+         </tr>
+         <tr>
+            <td>Think and Grow Rich</td>
+            <td>2004-09-10</td>
+            <td>true</td>
+         </tr>
+         <tr>
+            <td>The Law of Success</td>
+            <td>1982-05-09</td>
+            <td>false</td>
+         </tr>
+         <tr>
+            <td>Patriot Games</td>
+            <td>1995-10-21</td>
+            <td>false</td>
+         </tr>
+         <tr>
+            <td>The Sum of All Fears</td>
+            <td>1992-09-19</td>
+            <td>false</td>
+         </tr>
+         <tr>
+            <td>The Alchemist</td>
+            <td>2017-02-20</td>
+            <td>false</td>
+         </tr>
+         <tr>
+            <td>Hamlet</td>
+            <td>1994-06-01</td>
+            <td>false</td>
+         </tr>
+         <tr>
+            <td>Measure for Measure</td>
+            <td>1990-03-23</td>
+            <td>false</td>
+         </tr>
+         <tr>
+            <td>Hamlet</td>
+            <td>1989-05-05</td>
+            <td>true</td>
+         </tr>
+         <tr>
+            <td>Hamlet</td>
+            <td>1999-05-30</td>
+            <td>true</td>
+         </tr>
+         <tr>
+            <td>The Law of Success</td>
+            <td>2004-11-26</td>
+            <td>true</td>
+         </tr>
+         <tr>
+            <td>Romeo and Juliet</td>
+            <td>1997-02-08</td>
+            <td>true</td>
+         </tr>
+         <tr>
+            <td>The Alchemist</td>
+            <td>2009-08-21</td>
+            <td>true</td>
+         </tr>
+      </table>
+   </body>
+</html>
\ No newline at end of file
diff --git a/src/main/resources/output/3-authors-namespace.xml b/src/main/resources/output/3-authors-namespace.xml
new file mode 100644
index 0000000..13ced6e
--- /dev/null
+++ b/src/main/resources/output/3-authors-namespace.xml
@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<a:authors xmlns:a="http://marklogicacademy.ml/library/authors/v2">
+   <a:author xmlns="http://www.demo.com/author"
+              xmlns:a="http://www.demo.com/author"
+              xmlns:p="http://www.demo.com/person"
+              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+              id="1">
+      <p:firstName>William</p:firstName>
+      <p:lastName>Shakespeare</p:lastName>
+      <a:dateOfBirth>1564-04-23</a:dateOfBirth>
+      <a:dateOfDeath>1616-04-23</a:dateOfDeath>
+   </a:author>
+   <a:author xmlns="http://www.demo.com/author"
+              xmlns:a="http://www.demo.com/author"
+              xmlns:p="http://www.demo.com/person"
+              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+              id="2">
+      <p:firstName>J.K.</p:firstName>
+      <p:lastName>Rowling</p:lastName>
+      <a:dateOfBirth>1965-07-31</a:dateOfBirth>
+   </a:author>
+   <a:author xmlns="http://www.demo.com/author"
+              xmlns:a="http://www.demo.com/author"
+              xmlns:p="http://www.demo.com/person"
+              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+              id="3">
+      <p:firstName>Paulo</p:firstName>
+      <p:lastName>Coelho</p:lastName>
+      <a:dateOfBirth>1947-08-24</a:dateOfBirth>
+   </a:author>
+   <a:author xmlns="http://www.demo.com/author"
+              xmlns:a="http://www.demo.com/author"
+              xmlns:p="http://www.demo.com/person"
+              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+              id="4">
+      <p:firstName>Stephen</p:firstName>
+      <p:lastName>King</p:lastName>
+      <a:dateOfBirth>1947-09-21</a:dateOfBirth>
+   </a:author>
+   <a:author xmlns="http://www.demo.com/author"
+              xmlns:a="http://www.demo.com/author"
+              xmlns:p="http://www.demo.com/person"
+              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+              id="5">
+      <p:firstName>Tom</p:firstName>
+      <p:lastName>Clancy</p:lastName>
+      <a:dateOfBirth>1947-04-12</a:dateOfBirth>
+      <a:dateOfDeath>2013-10-01</a:dateOfDeath>
+   </a:author>
+   <a:author xmlns="http://www.demo.com/author"
+              xmlns:a="http://www.demo.com/author"
+              xmlns:p="http://www.demo.com/person"
+              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+              id="6">
+      <p:firstName>Napoleon</p:firstName>
+      <p:lastName>Hill</p:lastName>
+      <a:dateOfBirth>1883-09-26</a:dateOfBirth>
+      <a:dateOfDeath>1970-11-08</a:dateOfDeath>
+   </a:author>
+</a:authors>
diff --git a/src/main/resources/output/4-death-authors.xml b/src/main/resources/output/4-death-authors.xml
new file mode 100644
index 0000000..7654c4a
--- /dev/null
+++ b/src/main/resources/output/4-death-authors.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<a:authors xmlns="http://www.demo.com/author"
+            xmlns:a="http://www.demo.com/author"
+            xmlns:p="http://www.demo.com/person"
+            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+            xsi:schemaLocation="http://www.demo.com/author author.xsd">
+   <a:author id="1">
+      <p:firstName>William</p:firstName>
+      <p:lastName>Shakespeare</p:lastName>
+      <a:dateOfBirth>1564-04-23</a:dateOfBirth>
+      <a:dateOfDeath>1616-04-23</a:dateOfDeath>
+   </a:author>
+   <a:author id="5">
+      <p:firstName>Tom</p:firstName>
+      <p:lastName>Clancy</p:lastName>
+      <a:dateOfBirth>1947-04-12</a:dateOfBirth>
+      <a:dateOfDeath>2013-10-01</a:dateOfDeath>
+   </a:author>
+   <a:author id="6">
+      <p:firstName>Napoleon</p:firstName>
+      <p:lastName>Hill</p:lastName>
+      <a:dateOfBirth>1883-09-26</a:dateOfBirth>
+      <a:dateOfDeath>1970-11-08</a:dateOfDeath>
+   </a:author>
+</a:authors>
diff --git a/src/main/resources/output/5-average-authors-age.xml b/src/main/resources/output/5-average-authors-age.xml
new file mode 100644
index 0000000..dc2d363
--- /dev/null
+++ b/src/main/resources/output/5-average-authors-age.xml
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<average_age>P45119DT8H</average_age>
diff --git a/src/main/resources/output/6-not-available-books.xml b/src/main/resources/output/6-not-available-books.xml
new file mode 100644
index 0000000..19642c3
--- /dev/null
+++ b/src/main/resources/output/6-not-available-books.xml
@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<b:books xmlns="http://www.demo.com"
+          xmlns:b="http://www.demo.com"
+          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:schemaLocation="http://www.demo.com book.xsd">
+   <b:book id="1">
+      <name>Hamlet</name>
+      <date>2001-05-04</date>
+      <authorId>1</authorId>
+      <availability>false</availability>
+   </b:book>
+   <b:book id="2">
+      <name>Macbeth</name>
+      <date>2000-12-13</date>
+      <authorId>1</authorId>
+      <availability>false</availability>
+   </b:book>
+   <b:book id="7">
+      <name>The Law of Success</name>
+      <date>1982-05-09</date>
+      <authorId>6</authorId>
+      <availability>false</availability>
+   </b:book>
+   <b:book id="8">
+      <name>Patriot Games</name>
+      <date>1995-10-21</date>
+      <authorId>5</authorId>
+      <availability>false</availability>
+   </b:book>
+   <b:book id="9">
+      <name>The Sum of All Fears</name>
+      <date>1992-09-19</date>
+      <authorId>5</authorId>
+      <availability>false</availability>
+   </b:book>
+   <b:book id="10">
+      <name>The Alchemist</name>
+      <date>2017-02-20</date>
+      <authorId>3</authorId>
+      <availability>false</availability>
+   </b:book>
+   <b:book id="11">
+      <name>Hamlet</name>
+      <date>1994-06-01</date>
+      <authorId>1</authorId>
+      <availability>false</availability>
+   </b:book>
+   <b:book id="12">
+      <name>Measure for Measure</name>
+      <date>1990-03-23</date>
+      <authorId>1</authorId>
+      <availability>false</availability>
+   </b:book>
+</b:books>
diff --git a/src/main/resources/output/7-authors-with-books.xml b/src/main/resources/output/7-authors-with-books.xml
new file mode 100644
index 0000000..ea60a89
--- /dev/null
+++ b/src/main/resources/output/7-authors-with-books.xml
@@ -0,0 +1,237 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<connections>
+   <connection>
+      <a:author xmlns="http://www.demo.com/author"
+                 xmlns:a="http://www.demo.com/author"
+                 xmlns:p="http://www.demo.com/person"
+                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                 id="1">
+         <p:firstname>William</p:firstname>
+         <p:lastname>Shakespeare</p:lastname>
+         <a:date-of-birth>1564-04-23</a:date-of-birth>
+         <a:date-of-death>1616-04-23</a:date-of-death>
+      </a:author>
+      <books>
+         <b:book xmlns="http://www.demo.com"
+                  xmlns:b="http://www.demo.com"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  id="1">
+            <name>Hamlet</name>
+            <date>2001-05-04</date>
+            <authorId>1</authorId>
+            <availability>false</availability>
+         </b:book>
+         <b:book xmlns="http://www.demo.com"
+                  xmlns:b="http://www.demo.com"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  id="2">
+            <name>Macbeth</name>
+            <date>2000-12-13</date>
+            <authorId>1</authorId>
+            <availability>false</availability>
+         </b:book>
+         <b:book xmlns="http://www.demo.com"
+                  xmlns:b="http://www.demo.com"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  id="11">
+            <name>Hamlet</name>
+            <date>1994-06-01</date>
+            <authorId>1</authorId>
+            <availability>false</availability>
+         </b:book>
+         <b:book xmlns="http://www.demo.com"
+                  xmlns:b="http://www.demo.com"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  id="12">
+            <name>Measure for Measure</name>
+            <date>1990-03-23</date>
+            <authorId>1</authorId>
+            <availability>false</availability>
+         </b:book>
+         <b:book xmlns="http://www.demo.com"
+                  xmlns:b="http://www.demo.com"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  id="13">
+            <name>Hamlet</name>
+            <date>1989-05-05</date>
+            <authorId>1</authorId>
+            <availability>true</availability>
+         </b:book>
+         <b:book xmlns="http://www.demo.com"
+                  xmlns:b="http://www.demo.com"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  id="14">
+            <name>Hamlet</name>
+            <date>1999-05-30</date>
+            <authorId>1</authorId>
+            <availability>true</availability>
+         </b:book>
+         <b:book xmlns="http://www.demo.com"
+                  xmlns:b="http://www.demo.com"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  id="16">
+            <name>Romeo and Juliet</name>
+            <date>1997-02-08</date>
+            <authorId>1</authorId>
+            <availability>true</availability>
+         </b:book>
+      </books>
+   </connection>
+   <connection>
+      <a:author xmlns="http://www.demo.com/author"
+                 xmlns:a="http://www.demo.com/author"
+                 xmlns:p="http://www.demo.com/person"
+                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                 id="2">
+         <p:firstname>J.K.</p:firstname>
+         <p:lastname>Rowling</p:lastname>
+         <a:date-of-birth>1965-07-31</a:date-of-birth>
+      </a:author>
+      <books>
+         <b:book xmlns="http://www.demo.com"
+                  xmlns:b="http://www.demo.com"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  id="3">
+            <name>Harry Potter and the Sorcerer's Stone</name>
+            <date>2005-04-29</date>
+            <authorId>2</authorId>
+            <availability>true</availability>
+         </b:book>
+      </books>
+   </connection>
+   <connection>
+      <a:author xmlns="http://www.demo.com/author"
+                 xmlns:a="http://www.demo.com/author"
+                 xmlns:p="http://www.demo.com/person"
+                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                 id="3">
+         <p:firstname>Paulo</p:firstname>
+         <p:lastname>Coelho</p:lastname>
+         <a:date-of-birth>1947-08-24</a:date-of-birth>
+      </a:author>
+      <books>
+         <b:book xmlns="http://www.demo.com"
+                  xmlns:b="http://www.demo.com"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  id="10">
+            <name>The Alchemist</name>
+            <date>2017-02-20</date>
+            <authorId>3</authorId>
+            <availability>false</availability>
+         </b:book>
+         <b:book xmlns="http://www.demo.com"
+                  xmlns:b="http://www.demo.com"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  id="17">
+            <name>The Alchemist</name>
+            <date>2009-08-21</date>
+            <authorId>3</authorId>
+            <availability>true</availability>
+         </b:book>
+      </books>
+   </connection>
+   <connection>
+      <a:author xmlns="http://www.demo.com/author"
+                 xmlns:a="http://www.demo.com/author"
+                 xmlns:p="http://www.demo.com/person"
+                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                 id="4">
+         <p:firstname>Stephen</p:firstname>
+         <p:lastname>King</p:lastname>
+         <a:date-of-birth>1947-09-21</a:date-of-birth>
+      </a:author>
+      <books>
+         <b:book xmlns="http://www.demo.com"
+                  xmlns:b="http://www.demo.com"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  id="4">
+            <name>The Long Walk</name>
+            <date>2018-07-01</date>
+            <authorId>4</authorId>
+            <availability>true</availability>
+         </b:book>
+         <b:book xmlns="http://www.demo.com"
+                  xmlns:b="http://www.demo.com"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  id="5">
+            <name>Misery</name>
+            <date>2018-01-31</date>
+            <authorId>4</authorId>
+            <availability>true</availability>
+         </b:book>
+      </books>
+   </connection>
+   <connection>
+      <a:author xmlns="http://www.demo.com/author"
+                 xmlns:a="http://www.demo.com/author"
+                 xmlns:p="http://www.demo.com/person"
+                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                 id="5">
+         <p:firstname>Tom</p:firstname>
+         <p:lastname>Clancy</p:lastname>
+         <a:date-of-birth>1947-04-12</a:date-of-birth>
+         <a:date-of-death>2013-10-01</a:date-of-death>
+      </a:author>
+      <books>
+         <b:book xmlns="http://www.demo.com"
+                  xmlns:b="http://www.demo.com"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  id="8">
+            <name>Patriot Games</name>
+            <date>1995-10-21</date>
+            <authorId>5</authorId>
+            <availability>false</availability>
+         </b:book>
+         <b:book xmlns="http://www.demo.com"
+                  xmlns:b="http://www.demo.com"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  id="9">
+            <name>The Sum of All Fears</name>
+            <date>1992-09-19</date>
+            <authorId>5</authorId>
+            <availability>false</availability>
+         </b:book>
+      </books>
+   </connection>
+   <connection>
+      <a:author xmlns="http://www.demo.com/author"
+                 xmlns:a="http://www.demo.com/author"
+                 xmlns:p="http://www.demo.com/person"
+                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                 id="6">
+         <p:firstname>Napoleon</p:firstname>
+         <p:lastname>Hill</p:lastname>
+         <a:date-of-birth>1883-09-26</a:date-of-birth>
+         <a:date-of-death>1970-11-08</a:date-of-death>
+      </a:author>
+      <books>
+         <b:book xmlns="http://www.demo.com"
+                  xmlns:b="http://www.demo.com"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  id="6">
+            <name>Think and Grow Rich</name>
+            <date>2004-09-10</date>
+            <authorId>6</authorId>
+            <availability>true</availability>
+         </b:book>
+         <b:book xmlns="http://www.demo.com"
+                  xmlns:b="http://www.demo.com"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  id="7">
+            <name>The Law of Success</name>
+            <date>1982-05-09</date>
+            <authorId>6</authorId>
+            <availability>false</availability>
+         </b:book>
+         <b:book xmlns="http://www.demo.com"
+                  xmlns:b="http://www.demo.com"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  id="15">
+            <name>The Law of Success</name>
+            <date>2004-11-26</date>
+            <authorId>6</authorId>
+            <availability>true</availability>
+         </b:book>
+      </books>
+   </connection>
+</connections>
diff --git a/src/main/resources/output/8-who-wrote-more-than-3-books.xml b/src/main/resources/output/8-who-wrote-more-than-3-books.xml
new file mode 100644
index 0000000..c5b9aa5
--- /dev/null
+++ b/src/main/resources/output/8-who-wrote-more-than-3-books.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<authors>
+   <author id="1">
+      <firstName>William</firstName>
+      <lastName>Shakespeare</lastName>
+      <writtenBooks>7</writtenBooks>
+   </author>
+</authors>
diff --git a/src/main/resources/output/9-attributes-into-elements.xml b/src/main/resources/output/9-attributes-into-elements.xml
new file mode 100644
index 0000000..1ee5162
--- /dev/null
+++ b/src/main/resources/output/9-attributes-into-elements.xml
@@ -0,0 +1,46 @@
+                                                                                                                                                                                                                           <?xml version="1.0" encoding="UTF-8"?>
+<a:authors xmlns="http://www.demo.com/author"
+            xmlns:a="http://www.demo.com/author"
+            xmlns:p="http://www.demo.com/person"
+            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+            xsi:schemaLocation="http://www.demo.com/author author.xsd">
+   <a:author>
+      <a:id>1</a:id>
+      <p:firstName>William</p:firstName>
+      <p:lastName>Shakespeare</p:lastName>
+      <a:dateOfBirth>1564-04-23</a:dateOfBirth>
+      <a:dateOfDeath>1616-04-23</a:dateOfDeath>
+   </a:author>
+   <a:author>
+      <a:id>2</a:id>
+      <p:firstName>J.K.</p:firstName>
+      <p:lastName>Rowling</p:lastName>
+      <a:dateOfBirth>1965-07-31</a:dateOfBirth>
+   </a:author>
+   <a:author>
+      <a:id>3</a:id>
+      <p:firstName>Paulo</p:firstName>
+      <p:lastName>Coelho</p:lastName>
+      <a:dateOfBirth>1947-08-24</a:dateOfBirth>
+   </a:author>
+   <a:author>
+      <a:id>4</a:id>
+      <p:firstName>Stephen</p:firstName>
+      <p:lastName>King</p:lastName>
+      <a:dateOfBirth>1947-09-21</a:dateOfBirth>
+   </a:author>
+   <a:author>
+      <a:id>5</a:id>
+      <p:firstName>Tom</p:firstName>
+      <p:lastName>Clancy</p:lastName>
+      <a:dateOfBirth>1947-04-12</a:dateOfBirth>
+      <a:dateOfDeath>2013-10-01</a:dateOfDeath>
+   </a:author>
+   <a:author>
+      <a:id>6</a:id>
+      <p:firstName>Napoleon</p:firstName>
+      <p:lastName>Hill</p:lastName>
+      <a:dateOfBirth>1883-09-26</a:dateOfBirth>
+      <a:dateOfDeath>1970-11-08</a:dateOfDeath>
+   </a:author>
+</a:authors>
diff --git a/src/main/resources/solutions/.gitkeep b/src/main/resources/solutions/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/src/main/resources/solutions/1-available-books.xml b/src/main/resources/solutions/1-available-books.xml
new file mode 100644
index 0000000..f100196
--- /dev/null
+++ b/src/main/resources/solutions/1-available-books.xml
@@ -0,0 +1 @@
+<!-- add your results here -->
\ No newline at end of file
diff --git a/src/main/resources/solutions/10-most-popular-books.xml b/src/main/resources/solutions/10-most-popular-books.xml
new file mode 100644
index 0000000..f100196
--- /dev/null
+++ b/src/main/resources/solutions/10-most-popular-books.xml
@@ -0,0 +1 @@
+<!-- add your results here -->
\ No newline at end of file
diff --git a/src/main/resources/solutions/2-table-of-books.html b/src/main/resources/solutions/2-table-of-books.html
new file mode 100644
index 0000000..f100196
--- /dev/null
+++ b/src/main/resources/solutions/2-table-of-books.html
@@ -0,0 +1 @@
+<!-- add your results here -->
\ No newline at end of file
diff --git a/src/main/resources/solutions/3-authors-namespace.xml b/src/main/resources/solutions/3-authors-namespace.xml
new file mode 100644
index 0000000..f100196
--- /dev/null
+++ b/src/main/resources/solutions/3-authors-namespace.xml
@@ -0,0 +1 @@
+<!-- add your results here -->
\ No newline at end of file
diff --git a/src/main/resources/solutions/4-death-authors.xml b/src/main/resources/solutions/4-death-authors.xml
new file mode 100644
index 0000000..f100196
--- /dev/null
+++ b/src/main/resources/solutions/4-death-authors.xml
@@ -0,0 +1 @@
+<!-- add your results here -->
\ No newline at end of file
diff --git a/src/main/resources/solutions/5-average-authors-age.xml b/src/main/resources/solutions/5-average-authors-age.xml
new file mode 100644
index 0000000..f100196
--- /dev/null
+++ b/src/main/resources/solutions/5-average-authors-age.xml
@@ -0,0 +1 @@
+<!-- add your results here -->
\ No newline at end of file
diff --git a/src/main/resources/solutions/6-not-available-books.xml b/src/main/resources/solutions/6-not-available-books.xml
new file mode 100644
index 0000000..f100196
--- /dev/null
+++ b/src/main/resources/solutions/6-not-available-books.xml
@@ -0,0 +1 @@
+<!-- add your results here -->
\ No newline at end of file
diff --git a/src/main/resources/solutions/7-authors-with-books.xml b/src/main/resources/solutions/7-authors-with-books.xml
new file mode 100644
index 0000000..f100196
--- /dev/null
+++ b/src/main/resources/solutions/7-authors-with-books.xml
@@ -0,0 +1 @@
+<!-- add your results here -->
\ No newline at end of file
diff --git a/src/main/resources/solutions/8-who-wrote-more-than-3-books.xml b/src/main/resources/solutions/8-who-wrote-more-than-3-books.xml
new file mode 100644
index 0000000..f100196
--- /dev/null
+++ b/src/main/resources/solutions/8-who-wrote-more-than-3-books.xml
@@ -0,0 +1 @@
+<!-- add your results here -->
\ No newline at end of file
diff --git a/src/main/resources/solutions/9-attributes-into-elements.xml b/src/main/resources/solutions/9-attributes-into-elements.xml
new file mode 100644
index 0000000..f100196
--- /dev/null
+++ b/src/main/resources/solutions/9-attributes-into-elements.xml
@@ -0,0 +1 @@
+<!-- add your results here -->
\ No newline at end of file
diff --git a/src/main/resources/xml/.gitkeep b/src/main/resources/xml/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/src/main/resources/xml/author.xml b/src/main/resources/xml/author.xml
new file mode 100644
index 0000000..ecca10e
--- /dev/null
+++ b/src/main/resources/xml/author.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<a:authors xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+           xmlns="http://www.demo.com/author"
+           xmlns:a="http://www.demo.com/author"
+           xmlns:p="http://www.demo.com/person"
+           xsi:schemaLocation="http://www.demo.com/author author.xsd">
+    <a:author id="1">
+        <p:firstname>William</p:firstname>
+        <p:lastname>Shakespeare</p:lastname>
+        <a:date-of-birth>1564-04-23</a:date-of-birth>
+        <a:date-of-death>1616-04-23</a:date-of-death>
+    </a:author>
+    <a:author id="2">
+        <p:firstname>J.K.</p:firstname>
+        <p:lastname>Rowling</p:lastname>
+        <a:date-of-birth>1965-07-31</a:date-of-birth>
+    </a:author>
+    <a:author id="3">
+        <p:firstname>Paulo</p:firstname>
+        <p:lastname>Coelho</p:lastname>
+        <a:date-of-birth>1947-08-24</a:date-of-birth>
+    </a:author>
+    <a:author id="4">
+        <p:firstname>Stephen</p:firstname>
+        <p:lastname>King</p:lastname>
+        <a:date-of-birth>1947-09-21</a:date-of-birth>
+    </a:author>
+    <a:author id="5">
+        <p:firstname>Tom</p:firstname>
+        <p:lastname>Clancy</p:lastname>
+        <a:date-of-birth>1947-04-12</a:date-of-birth>
+        <a:date-of-death>2013-10-01</a:date-of-death>
+    </a:author>
+    <a:author id="6">
+        <p:firstname>Napoleon</p:firstname>
+        <p:lastname>Hill</p:lastname>
+        <a:date-of-birth>1883-09-26</a:date-of-birth>
+        <a:date-of-death>1970-11-08</a:date-of-death>
+    </a:author>
+</a:authors>
diff --git a/src/main/resources/xml/author.xsd b/src/main/resources/xml/author.xsd
new file mode 100644
index 0000000..1b12430
--- /dev/null
+++ b/src/main/resources/xml/author.xsd
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Created with Liquid Studio 2018 (https://www.liquid-technologies.com) -->
+<xs:schema xmlns:a="http://www.demo.com/author"
+           xmlns:p="http://www.demo.com/person"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           targetNamespace="http://www.demo.com/author"
+           elementFormDefault="qualified">
+
+    <xs:import namespace="http://www.demo.com/person" schemaLocation="person.xsd"/>
+
+    <xs:complexType name="AuthorType">
+        <xs:complexContent>
+            <xs:extension base="p:PersonType">
+                <xs:sequence>
+                    <xs:element name="dateOfBirth" type="xs:date"/>
+                    <xs:element name="dateOfDeath" type="xs:date" minOccurs="0" maxOccurs="1"/>
+                </xs:sequence>
+            </xs:extension>
+        </xs:complexContent>
+    </xs:complexType>
+
+    <xs:element name="author" type="a:AuthorType"/>
+
+    <xs:complexType name="AuthorsType">
+        <xs:sequence>
+            <xs:element ref="a:author" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+    </xs:complexType>
+
+    <xs:element name="authors" type="a:AuthorsType"/>
+
+</xs:schema>
diff --git a/src/main/resources/xml/book.xml b/src/main/resources/xml/book.xml
new file mode 100644
index 0000000..8766e05
--- /dev/null
+++ b/src/main/resources/xml/book.xml
@@ -0,0 +1,108 @@
+<?xml version="1.0" encoding="utf-8"?>
+<b:books xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://www.demo.com"
+         xmlns:b="http://www.demo.com"
+         xsi:schemaLocation="http://www.demo.com book.xsd">
+    <b:book id="1">
+        <name>Hamlet</name>
+        <date>2001-05-04</date>
+        <authorId>1</authorId>
+        <availability>false</availability>
+    </b:book>
+    <b:book id="2">
+        <name>Macbeth</name>
+        <date>2000-12-13</date>
+        <authorId>1</authorId>
+        <availability>false</availability>
+    </b:book>
+    <b:book id="3">
+        <name>Harry Potter and the Sorcerer's Stone</name>
+        <date>2005-04-29</date>
+        <authorId>2</authorId>
+        <availability>true</availability>
+    </b:book>
+    <b:book id="4">
+        <name>The Long Walk</name>
+        <date>2018-07-01</date>
+        <authorId>4</authorId>
+        <availability>true</availability>
+    </b:book>
+    <b:book id="5">
+        <name>Misery</name>
+        <date>2018-01-31</date>
+        <authorId>4</authorId>
+        <availability>true</availability>
+    </b:book>
+    <b:book id="6">
+        <name>Think and Grow Rich</name>
+        <date>2004-09-10</date>
+        <authorId>6</authorId>
+        <availability>true</availability>
+    </b:book>
+    <b:book id="7">
+        <name>The Law of Success</name>
+        <date>1982-05-09</date>
+        <authorId>6</authorId>
+        <availability>false</availability>
+    </b:book>
+    <b:book id="8">
+        <name>Patriot Games</name>
+        <date>1995-10-21</date>
+        <authorId>5</authorId>
+        <availability>false</availability>
+    </b:book>
+    <b:book id="9">
+        <name>The Sum of All Fears</name>
+        <date>1992-09-19</date>
+        <authorId>5</authorId>
+        <availability>false</availability>
+    </b:book>
+    <b:book id="10">
+        <name>The Alchemist</name>
+        <date>2017-02-20</date>
+        <authorId>3</authorId>
+        <availability>false</availability>
+    </b:book>
+    <b:book id="11">
+        <name>Hamlet</name>
+        <date>1994-06-01</date>
+        <authorId>1</authorId>
+        <availability>false</availability>
+    </b:book>
+    <b:book id="12">
+        <name>Measure for Measure</name>
+        <date>1990-03-23</date>
+        <authorId>1</authorId>
+        <availability>false</availability>
+    </b:book>
+    <b:book id="13">
+        <name>Hamlet</name>
+        <date>1989-05-05</date>
+        <authorId>1</authorId>
+        <availability>true</availability>
+    </b:book>
+    <b:book id="14">
+        <name>Hamlet</name>
+        <date>1999-05-30</date>
+        <authorId>1</authorId>
+        <availability>true</availability>
+    </b:book>
+    <b:book id="15">
+        <name>The Law of Success</name>
+        <date>2004-11-26</date>
+        <authorId>6</authorId>
+        <availability>true</availability>
+    </b:book>
+    <b:book id="16">
+        <name>Romeo and Juliet</name>
+        <date>1997-02-08</date>
+        <authorId>1</authorId>
+        <availability>true</availability>
+    </b:book>
+    <b:book id="17">
+        <name>The Alchemist</name>
+        <date>2009-08-21</date>
+        <authorId>3</authorId>
+        <availability>true</availability>
+    </b:book>
+</b:books>
diff --git a/src/main/resources/xml/book.xsd b/src/main/resources/xml/book.xsd
new file mode 100644
index 0000000..db2f9bb
--- /dev/null
+++ b/src/main/resources/xml/book.xsd
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Created with Liquid Studio 2018 (https://www.liquid-technologies.com) -->
+<xs:schema xmlns:b="http://www.demo.com"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           targetNamespace="http://www.demo.com"
+           elementFormDefault="qualified">
+    <xs:complexType name="BookType">
+        <xs:sequence>
+            <xs:element name="name" type="xs:string"/>
+            <xs:element name="date" type="xs:date"/>
+            <xs:element name="authorId" type="xs:int"/>
+            <xs:element name="availability" type="xs:boolean"/>
+        </xs:sequence>
+        <xs:attribute name="id" type="xs:int"/>
+    </xs:complexType>
+    <xs:element name="book" type="b:BookType"/>
+    <xs:complexType name="BooksType">
+        <xs:sequence>
+            <xs:element ref="b:book" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+    </xs:complexType>
+    <xs:element name="books" type="b:BooksType"/>
+</xs:schema>
diff --git a/src/main/resources/xml/borrow.xml b/src/main/resources/xml/borrow.xml
new file mode 100644
index 0000000..81e95bb
--- /dev/null
+++ b/src/main/resources/xml/borrow.xml
@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<bb:borrows xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+            xmlns="http://www.demo.com/borrow"
+            xmlns:bb="http://www.demo.com/borrow"
+            xsi:schemaLocation="http://www.demo.com/borrow">
+    <bb:borrow id="1">
+        <bb:bookId>3</bb:bookId>
+        <bb:readerId>2</bb:readerId>
+    </bb:borrow>
+    <bb:borrow id="2">
+        <bb:bookId>3</bb:bookId>
+        <bb:readerId>14</bb:readerId>
+    </bb:borrow>
+    <bb:borrow id="3">
+        <bb:bookId>1</bb:bookId>
+        <bb:readerId>10</bb:readerId>
+    </bb:borrow>
+    <bb:borrow id="4">
+        <bb:bookId>2</bb:bookId>
+        <bb:readerId>1</bb:readerId>
+    </bb:borrow>
+    <bb:borrow id="5">
+        <bb:bookId>1</bb:bookId>
+        <bb:readerId>9</bb:readerId>
+    </bb:borrow>
+    <bb:borrow id="6">
+        <bb:bookId>6</bb:bookId>
+        <bb:readerId>5</bb:readerId>
+    </bb:borrow>
+    <bb:borrow id="7">
+        <bb:bookId>1</bb:bookId>
+        <bb:readerId>15</bb:readerId>
+    </bb:borrow>
+    <bb:borrow id="8">
+        <bb:bookId>5</bb:bookId>
+        <bb:readerId>9</bb:readerId>
+    </bb:borrow>
+    <bb:borrow id="9">
+        <bb:bookId>16</bb:bookId>
+        <bb:readerId>8</bb:readerId>
+    </bb:borrow>
+</bb:borrows>
\ No newline at end of file
diff --git a/src/main/resources/xml/person.xsd b/src/main/resources/xml/person.xsd
new file mode 100644
index 0000000..aa5c797
--- /dev/null
+++ b/src/main/resources/xml/person.xsd
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Created with Liquid Studio 2018 (https://www.liquid-technologies.com) -->
+<xs:schema elementFormDefault="qualified"
+           xmlns:p="http://www.demo.com/person"
+           targetNamespace="http://www.demo.com/person"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema">
+    <xs:complexType name="PersonType">
+        <xs:sequence>
+            <xs:element name="firstName" type="xs:string"/>
+            <xs:element name="lastName" type="xs:string"/>
+            <xs:element name="age" type="xs:int" minOccurs="0" maxOccurs="1"/>
+        </xs:sequence>
+        <xs:attribute name="id" type="xs:int"/>
+    </xs:complexType>
+
+    <xs:element name="person" type="p:PersonType"/>
+
+</xs:schema>
diff --git a/src/main/resources/xml/reader.xml b/src/main/resources/xml/reader.xml
new file mode 100644
index 0000000..28794e2
--- /dev/null
+++ b/src/main/resources/xml/reader.xml
@@ -0,0 +1,81 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<r:readers xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+           xmlns="http://www.demo.com/reader"
+           xmlns:r="http://www.demo.com/reader"
+           xmlns:p="http://www.demo.com/person"
+           xsi:schemaLocation="http://www.demo.com/reader reader.xsd">
+    <r:reader id="1">
+        <p:firstname>John</p:firstname>
+        <p:lastname>Burg</p:lastname>
+        <p:age>45</p:age>
+        <r:bookId>32</r:bookId>
+        <r:bookId>57</r:bookId>
+    </r:reader>
+    <r:reader id="2">
+        <p:firstname>Steven</p:firstname>
+        <p:lastname>Pick</p:lastname>
+        <p:age>29</p:age>
+        <r:bookId>27</r:bookId>
+        <r:bookId>12</r:bookId>
+        <r:bookId>91</r:bookId>
+    </r:reader>
+    <r:reader id="3">
+        <!--warning-->
+        <p:firstname>Peter</p:firstname>
+        <p:lastname>Stock</p:lastname>
+        <p:age>21</p:age>
+        <r:bookId>42</r:bookId>
+        <r:bookId>1</r:bookId>
+        <r:bookId>9</r:bookId>
+        <r:bookId>98</r:bookId>
+        <r:bookId>60</r:bookId>
+    </r:reader>
+    <r:reader id="4">
+        <p:firstname>Robert</p:firstname>
+        <p:lastname>Neat</p:lastname>
+        <p:age>32</p:age>
+        <r:bookId>87</r:bookId>
+        <r:bookId>23</r:bookId>
+        <r:bookId>11</r:bookId>
+        <r:bookId>7</r:bookId>
+        <r:bookId>55</r:bookId>
+    </r:reader>
+    <r:reader id="5">
+        <p:firstname>John</p:firstname>
+        <p:lastname>Pale</p:lastname>
+        <p:age>36</p:age>
+        <r:bookId>81</r:bookId>
+    </r:reader>
+    <r:reader id="6">
+        <p:firstname>Josh</p:firstname>
+        <p:lastname>Ericson</p:lastname>
+        <p:age>46</p:age>
+        <r:bookId>8</r:bookId>
+    </r:reader>
+    <r:reader id="7">
+        <p:firstname>Patrick</p:firstname>
+        <p:lastname>Evans</p:lastname>
+        <p:age>50</p:age>
+    </r:reader>
+    <r:reader id="8">
+        <p:firstname>Paul</p:firstname>
+        <p:lastname>Navy</p:lastname>
+        <p:age>23</p:age>
+        <r:bookId>69</r:bookId>
+        <r:bookId>78</r:bookId>
+    </r:reader>
+    <r:reader id="9">
+        <p:firstname>Rob</p:firstname>
+        <p:lastname>Rockwell</p:lastname>
+        <p:age>30</p:age>
+        <r:bookId>47</r:bookId>
+    </r:reader>
+    <r:reader id="10">
+        <p:firstname>Luis</p:firstname>
+        <p:lastname>Pocket</p:lastname>
+        <p:age>52</p:age>
+        <r:bookId>10</r:bookId>
+        <r:bookId>83</r:bookId>
+        <r:bookId>2</r:bookId>
+    </r:reader>
+</r:readers>
diff --git a/src/main/resources/xml/reader.xsd b/src/main/resources/xml/reader.xsd
new file mode 100644
index 0000000..ff0b79a
--- /dev/null
+++ b/src/main/resources/xml/reader.xsd
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- edited with XMLSpy v2018 rel. 2 sp1 (x64) (http://www.altova.com) by Kacper Makuch (Kacper Makuch) -->
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           xmlns:r="http://www.demo.com/reader"
+           xmlns:p="http://www.demo.com/person"
+           targetNamespace="http://www.demo.com/reader"
+           elementFormDefault="qualified">
+    <xs:import namespace="http://www.demo.com/person" schemaLocation="person.xsd"/>
+    <xs:complexType name="ReaderType">
+        <xs:complexContent>
+            <xs:extension base="p:PersonType">
+                <xs:sequence>
+                    <xs:element name="bookId" type="xs:int" minOccurs="0" maxOccurs="unbounded"/>
+                </xs:sequence>
+            </xs:extension>
+        </xs:complexContent>
+    </xs:complexType>
+    <xs:element name="reader" type="r:ReaderType"/>
+    <xs:complexType name="ReadersType">
+        <xs:sequence>
+            <xs:element ref="r:reader" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+    </xs:complexType>
+    <xs:element name="readers" type="r:ReadersType"/>
+</xs:schema>
diff --git a/src/main/resources/xsd/1-available-books.xsd b/src/main/resources/xsd/1-available-books.xsd
new file mode 100644
index 0000000..48052c9
--- /dev/null
+++ b/src/main/resources/xsd/1-available-books.xsd
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Created with Liquid Studio 2018 (https://www.liquid-technologies.com) -->
+<xs:schema xmlns:a="http://www.demo.com/author"
+           xmlns:p="http://www.demo.com/person"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           elementFormDefault="qualified">
+
+    <xs:element name="count" type="xs:int"/>
+
+</xs:schema>
diff --git a/src/main/resources/xsd/10-most-popular-books.xsd b/src/main/resources/xsd/10-most-popular-books.xsd
new file mode 100644
index 0000000..26165a5
--- /dev/null
+++ b/src/main/resources/xsd/10-most-popular-books.xsd
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Created with Liquid Studio 2018 (https://www.liquid-technologies.com) -->
+<xs:schema xmlns:a="http://www.demo.com/author"
+           xmlns:p="http://www.demo.com/person"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           elementFormDefault="qualified">
+    <xs:element name="popularity">
+        <xs:complexType>
+            <xs:sequence>
+                <xs:element name="book" minOccurs="3" maxOccurs="3">
+                    <xs:complexType>
+                        <xs:sequence>
+                            <xs:element name="bookId" type="xs:int"/>
+                            <xs:element name="borrowCount" type="xs:int"/>
+                            <xs:element name="name" type="xs:string"/>
+                        </xs:sequence>
+                        <xs:attribute name="position" type="xs:int"/>
+                    </xs:complexType>
+                </xs:element>
+            </xs:sequence>
+        </xs:complexType>
+    </xs:element>
+
+</xs:schema>
diff --git a/src/main/resources/xsd/2-table-of-books.xsd b/src/main/resources/xsd/2-table-of-books.xsd
new file mode 100644
index 0000000..13974f7
--- /dev/null
+++ b/src/main/resources/xsd/2-table-of-books.xsd
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Created with Liquid Studio 2018 (https://www.liquid-technologies.com) -->
+<xs:schema xmlns:a="http://www.demo.com/author" xmlns:p="http://www.demo.com/person" xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="unqualified">
+    <xs:complexType name="tableType">
+        <xs:sequence>
+            <xs:element name="body">
+                <xs:complexType>
+                    <xs:sequence>
+                        <xs:element name="h1"/>
+                        <xs:element name="table">
+                            <xs:complexType>
+                                <xs:sequence>
+                                    <xs:element name="tr" maxOccurs="unbounded">
+                                        <xs:complexType>
+                                            <xs:sequence>
+                                                <xs:element name="th" minOccurs="0" maxOccurs="3"/>
+                                                <xs:element name="td" minOccurs="0" maxOccurs="3"/>
+                                            </xs:sequence>
+                                        </xs:complexType>
+                                    </xs:element>
+                                </xs:sequence>
+                            </xs:complexType>
+                        </xs:element>
+                    </xs:sequence>
+                </xs:complexType>
+            </xs:element>
+        </xs:sequence>
+    </xs:complexType>
+    <xs:element name="html" type="tableType"/>
+</xs:schema>
\ No newline at end of file
diff --git a/src/main/resources/xsd/3-authors-namespace.xsd b/src/main/resources/xsd/3-authors-namespace.xsd
new file mode 100644
index 0000000..becea21
--- /dev/null
+++ b/src/main/resources/xsd/3-authors-namespace.xsd
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Created with Liquid Studio 2018 (https://www.liquid-technologies.com) -->
+<xs:schema xmlns:a="http://marklogicacademy.ml/library/authors/v2"
+           xmlns:p="http://www.demo.com/person"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           targetNamespace="http://marklogicacademy.ml/library/authors/v2"
+           elementFormDefault="qualified">
+
+    <xs:import namespace="http://www.demo.com/person" schemaLocation="person.xsd"/>
+
+    <xs:complexType name="AuthorType">
+        <xs:complexContent>
+            <xs:extension base="p:PersonType">
+                <xs:sequence>
+                    <xs:element name="dateOfBirth" type="xs:date"/>
+                    <xs:element name="dateOfDeath" type="xs:date" minOccurs="0" maxOccurs="1"/>
+                </xs:sequence>
+            </xs:extension>
+        </xs:complexContent>
+    </xs:complexType>
+
+    <xs:element name="author" type="a:AuthorType"/>
+
+    <xs:complexType name="AuthorsType">
+        <xs:sequence>
+            <xs:element ref="a:author" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+    </xs:complexType>
+
+    <xs:element name="authors" type="a:AuthorsType"/>
+
+</xs:schema>
diff --git a/src/main/resources/xsd/4-death-authors.xsd b/src/main/resources/xsd/4-death-authors.xsd
new file mode 100644
index 0000000..1b12430
--- /dev/null
+++ b/src/main/resources/xsd/4-death-authors.xsd
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Created with Liquid Studio 2018 (https://www.liquid-technologies.com) -->
+<xs:schema xmlns:a="http://www.demo.com/author"
+           xmlns:p="http://www.demo.com/person"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           targetNamespace="http://www.demo.com/author"
+           elementFormDefault="qualified">
+
+    <xs:import namespace="http://www.demo.com/person" schemaLocation="person.xsd"/>
+
+    <xs:complexType name="AuthorType">
+        <xs:complexContent>
+            <xs:extension base="p:PersonType">
+                <xs:sequence>
+                    <xs:element name="dateOfBirth" type="xs:date"/>
+                    <xs:element name="dateOfDeath" type="xs:date" minOccurs="0" maxOccurs="1"/>
+                </xs:sequence>
+            </xs:extension>
+        </xs:complexContent>
+    </xs:complexType>
+
+    <xs:element name="author" type="a:AuthorType"/>
+
+    <xs:complexType name="AuthorsType">
+        <xs:sequence>
+            <xs:element ref="a:author" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+    </xs:complexType>
+
+    <xs:element name="authors" type="a:AuthorsType"/>
+
+</xs:schema>
diff --git a/src/main/resources/xsd/5-average-authors-age.xsd b/src/main/resources/xsd/5-average-authors-age.xsd
new file mode 100644
index 0000000..b09d310
--- /dev/null
+++ b/src/main/resources/xsd/5-average-authors-age.xsd
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Created with Liquid Studio 2018 (https://www.liquid-technologies.com) -->
+<xs:schema xmlns:a="http://www.demo.com/author"
+           xmlns:p="http://www.demo.com/person"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           elementFormDefault="qualified">
+
+    <xs:element name="average_age" type="xs:duration"/>
+
+</xs:schema>
diff --git a/src/main/resources/xsd/6-not-available-books.xsd b/src/main/resources/xsd/6-not-available-books.xsd
new file mode 100644
index 0000000..37537a0
--- /dev/null
+++ b/src/main/resources/xsd/6-not-available-books.xsd
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Created with Liquid Studio 2018 (https://www.liquid-technologies.com) -->
+<xs:schema xmlns:b="http://www.demo.com"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           targetNamespace="http://www.demo.com"
+           elementFormDefault="qualified">
+    <xs:complexType name="BookType">
+        <xs:sequence>
+            <xs:element name="name" type="xs:string"/>
+            <xs:element name="date" type="xs:date"/>
+            <xs:element name="authorId" type="xs:int"/>
+            <xs:element name="availability" type="xs:boolean" fixed="false"/>
+        </xs:sequence>
+        <xs:attribute name="id" type="xs:int"/>
+    </xs:complexType>
+    <xs:element name="book" type="b:BookType"/>
+    <xs:complexType name="BooksType">
+        <xs:sequence>
+            <xs:element ref="b:book" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+    </xs:complexType>
+    <xs:element name="books" type="b:BooksType"/>
+</xs:schema>
diff --git a/src/main/resources/xsd/7-authors-with-books.xsd b/src/main/resources/xsd/7-authors-with-books.xsd
new file mode 100644
index 0000000..8d56b92
--- /dev/null
+++ b/src/main/resources/xsd/7-authors-with-books.xsd
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Created with Liquid Studio 2018 (https://www.liquid-technologies.com) -->
+<xs:schema xmlns:a="http://www.demo.com/author"
+           xmlns:p="http://www.demo.com/person"
+           xmlns:b="http://www.demo.com"
+           xmlns="http://www.demo.com/author"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           elementFormDefault="unqualified">
+
+    <xs:import namespace="http://www.demo.com/person" schemaLocation="/home/patryk/XML-XSD/xml-repository-template/src/main/resources/xml/person.xsd"/>
+    <xs:import namespace="http://www.demo.com" schemaLocation="/home/patryk/XML-XSD/xml-repository-template/src/main/resources/xml/book.xsd"/>
+    <xs:import namespace="http://www.demo.com/author" schemaLocation="/home/patryk/XML-XSD/xml-repository-template/src/main/resources/xml/author.xsd"/>
+
+    <xs:element name="connections">
+        <xs:complexType>
+            <xs:sequence>
+                <xs:element name="connection" minOccurs="0" maxOccurs="unbounded">
+                    <xs:complexType>
+                        <xs:sequence>
+                            <xs:element name="author" type="a:AuthorType" />
+                            <xs:element name="books">
+                                <xs:complexType>
+                                    <xs:sequence>
+                                        <xs:element name="book" type="b:BookType" minOccurs="0" maxOccurs="unbounded"/>
+                                    </xs:sequence>
+                                </xs:complexType>
+                            </xs:element>
+                        </xs:sequence>
+                    </xs:complexType>
+                </xs:element>
+            </xs:sequence>
+        </xs:complexType>
+    </xs:element>
+
+</xs:schema>
diff --git a/src/main/resources/xsd/8-who-wrote-more-than-3-books.xsd b/src/main/resources/xsd/8-who-wrote-more-than-3-books.xsd
new file mode 100644
index 0000000..df7c536
--- /dev/null
+++ b/src/main/resources/xsd/8-who-wrote-more-than-3-books.xsd
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Created with Liquid Studio 2018 (https://www.liquid-technologies.com) -->
+<xs:schema xmlns:b="http://www.demo.com"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           elementFormDefault="qualified">
+        <xs:element name="authors">
+            <xs:complexType>
+                <xs:sequence>
+                    <xs:element name="author" maxOccurs="unbounded">
+                        <xs:complexType>
+                            <xs:sequence>
+                                <xs:element name="firstName" type="xs:string"/>
+                                <xs:element name="lastName" type="xs:string"/>
+                                <xs:element name="writtenBooks" type="xs:int"/>
+                            </xs:sequence>
+                            <xs:attribute name="id" type="xs:int"/>
+                        </xs:complexType>
+                    </xs:element>
+                </xs:sequence>
+            </xs:complexType>
+        </xs:element>
+</xs:schema>
diff --git a/src/main/resources/xsd/9-attributes-into-elements.xsd b/src/main/resources/xsd/9-attributes-into-elements.xsd
new file mode 100644
index 0000000..274b5bc
--- /dev/null
+++ b/src/main/resources/xsd/9-attributes-into-elements.xsd
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Created with Liquid Studio 2018 (https://www.liquid-technologies.com) -->
+<xs:schema xmlns:a="http://www.demo.com/author"
+           xmlns:p="http://www.demo.com/person"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           targetNamespace="http://www.demo.com/author"
+           elementFormDefault="unqualified">
+
+    <xs:import namespace="http://www.demo.com/person" schemaLocation="person.xsd"/>
+
+    <xs:complexType name="AuthorType">
+        <xs:complexContent>
+            <xs:extension base="p:PersonType">
+                <xs:sequence>
+                    <xs:element name="age" type=""
+                    <xs:element name="dateOfBirth" type="xs:date"/>
+                    <xs:element name="dateOfDeath" type="xs:date" minOccurs="0" maxOccurs="1"/>
+                    <xs:element name="id" type="xs:int"/>
+                </xs:sequence>
+            </xs:extension>
+        </xs:complexContent>
+    </xs:complexType>
+
+    <xs:element name="author" type="a:AuthorType"/>
+
+    <xs:complexType name="AuthorsType">
+        <xs:sequence>
+            <xs:element ref="a:author" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+    </xs:complexType>
+
+    <xs:element name="authors" type="a:AuthorsType"/>
+
+</xs:schema>
diff --git a/src/main/resources/xslt/.gitkeep b/src/main/resources/xslt/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/src/main/resources/xslt/1-available-books.xslt b/src/main/resources/xslt/1-available-books.xslt
new file mode 100644
index 0000000..b994f53
--- /dev/null
+++ b/src/main/resources/xslt/1-available-books.xslt
@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?>
\ No newline at end of file
diff --git a/src/main/resources/xslt/10-most-popular-books.xslt b/src/main/resources/xslt/10-most-popular-books.xslt
new file mode 100644
index 0000000..b994f53
--- /dev/null
+++ b/src/main/resources/xslt/10-most-popular-books.xslt
@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?>
\ No newline at end of file
diff --git a/src/main/resources/xslt/2-table-of-books.xslt b/src/main/resources/xslt/2-table-of-books.xslt
new file mode 100644
index 0000000..b994f53
--- /dev/null
+++ b/src/main/resources/xslt/2-table-of-books.xslt
@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?>
\ No newline at end of file
diff --git a/src/main/resources/xslt/3-authors-namespace.xslt b/src/main/resources/xslt/3-authors-namespace.xslt
new file mode 100644
index 0000000..b994f53
--- /dev/null
+++ b/src/main/resources/xslt/3-authors-namespace.xslt
@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?>
\ No newline at end of file
diff --git a/src/main/resources/xslt/4-death-authors.xslt b/src/main/resources/xslt/4-death-authors.xslt
new file mode 100644
index 0000000..b994f53
--- /dev/null
+++ b/src/main/resources/xslt/4-death-authors.xslt
@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?>
\ No newline at end of file
diff --git a/src/main/resources/xslt/5-average-authors-age.xslt b/src/main/resources/xslt/5-average-authors-age.xslt
new file mode 100644
index 0000000..b994f53
--- /dev/null
+++ b/src/main/resources/xslt/5-average-authors-age.xslt
@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?>
\ No newline at end of file
diff --git a/src/main/resources/xslt/6-not-available-books.xslt b/src/main/resources/xslt/6-not-available-books.xslt
new file mode 100644
index 0000000..b994f53
--- /dev/null
+++ b/src/main/resources/xslt/6-not-available-books.xslt
@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?>
\ No newline at end of file
diff --git a/src/main/resources/xslt/7-authors-with-books.xslt b/src/main/resources/xslt/7-authors-with-books.xslt
new file mode 100644
index 0000000..b994f53
--- /dev/null
+++ b/src/main/resources/xslt/7-authors-with-books.xslt
@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?>
\ No newline at end of file
diff --git a/src/main/resources/xslt/8-who-wrote-more-than-3-books.xslt b/src/main/resources/xslt/8-who-wrote-more-than-3-books.xslt
new file mode 100644
index 0000000..b994f53
--- /dev/null
+++ b/src/main/resources/xslt/8-who-wrote-more-than-3-books.xslt
@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?>
\ No newline at end of file
diff --git a/src/main/resources/xslt/9-attributes-into-elements.xslt b/src/main/resources/xslt/9-attributes-into-elements.xslt
new file mode 100644
index 0000000..b994f53
--- /dev/null
+++ b/src/main/resources/xslt/9-attributes-into-elements.xslt
@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?>
\ No newline at end of file