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Finished implementing backend

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This commit is contained in:
Adam Bem
2023-06-06 13:39:11 +02:00
parent 17fbc0a3a7
commit 539a2fc1ea
6 changed files with 110 additions and 11 deletions
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7
Backend/tools-services/src/main/java/com/r11/tools/SparkApplication.java
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@@ -2,11 +2,7 @@ package com.r11.tools;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.r11.tools.controller.JsonController;
import com.r11.tools.controller.ProcessorInfoController;
import com.r11.tools.controller.XPathController;
import com.r11.tools.controller.XsdController;
import com.r11.tools.controller.XsltController;
import com.r11.tools.controller.*;
import com.r11.tools.controller.internal.RestControllerRegistry;
import com.r11.tools.xml.Saxon;
import com.r11.tools.xml.Xalan;
@@ -48,6 +44,7 @@ public class SparkApplication {
registry.registerController(new XPathController(gson, logger, saxon, xalan));
registry.registerController(new XsltController(gson, logger, saxon, xalan));
registry.registerController(new JsonController(gson, jsongson, logger));
registry.registerController(new XQueryController(gson, logger, saxon));
registry.register();

103
Backend/tools-services/src/main/java/com/r11/tools/controller/XQueryController.java Normal file
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@@ -0,0 +1,103 @@
package com.r11.tools.controller;
import com.google.gson.Gson;
import com.google.gson.JsonObject;
import com.r11.tools.controller.internal.GlobalControllerManifest;
import com.r11.tools.controller.internal.HandlerType;
import com.r11.tools.controller.internal.RestController;
import com.r11.tools.controller.internal.ScopedControllerManifest;
import com.r11.tools.xml.XmlEngine;
import org.apache.logging.log4j.Logger;
import spark.Request;
import spark.Response;
@GlobalControllerManifest
public class XQueryController implements RestController {
private final Gson gson;
private final Logger logger;
private final XmlEngine saxon;
public XQueryController(Gson gson, Logger logger, XmlEngine saxon) {
this.gson = gson;
this.logger = logger;
this.saxon = saxon;
}
private JsonObject prepareErrorResponse(String message, String processor) {
JsonObject result = new JsonObject();
result.addProperty("result", message);
result.addProperty("processor", processor);
result.addProperty("status", "ERR");
result.addProperty("time", "N/A");
return result;
}
@ScopedControllerManifest(method = HandlerType.POST, path = "/xquery")
public void transform(Request request, Response response) {
JsonObject requestBody;
JsonObject responseJson;
try {
requestBody = this.gson.fromJson(request.body(), JsonObject.class);
} catch (Exception e) {
responseJson = prepareErrorResponse(e.getMessage(), "N/A");
response.status(400);
response.body(this.gson.toJson(responseJson));
return;
}
String data = requestBody.get("data").getAsString();
String query = requestBody.get("process").getAsString();
String processor = requestBody.get("processor").getAsString();
String version = requestBody.get("version").getAsString();
try {
if (processor.equals("saxon")) {
processWithSaxon(response, data, query, version);
}
else
response.body("saxon");
} catch (Exception e) {
responseJson = prepareErrorResponse(e.getMessage(), "Saxon");
response.status(400);
response.body(this.gson.toJson(responseJson));
}
}
private void processWithSaxon(Response response, String data, String query, String version) {
JsonObject responseJson = new JsonObject();
long duration;
String result;
long timeStart;
timeStart = System.currentTimeMillis();
try {
result = saxon.executeXQuery(data, query, version);
response.status(200);
responseJson.addProperty("result", result);
responseJson.addProperty("status", "OK");
} catch (Exception ex) {
this.logger.error("Error on processing XQuery using Saxon. " + ex);
response.status(400);
responseJson.addProperty("result", ex.getMessage());
responseJson.addProperty("status", "ERR");
}
duration = System.currentTimeMillis() - timeStart;
this.logger.info("Request (XQuery, Saxon) processed in " + duration + " ms.");
responseJson.addProperty("processor", "Saxon " + saxon.getVersion());
responseJson.addProperty("time", duration);
response.body(this.gson.toJson(responseJson));
}
}

4
Backend/tools-services/src/main/java/com/r11/tools/controller/XsltController.java
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@@ -6,8 +6,6 @@ import com.r11.tools.controller.internal.GlobalControllerManifest;
import com.r11.tools.controller.internal.HandlerType;
import com.r11.tools.controller.internal.RestController;
import com.r11.tools.controller.internal.ScopedControllerManifest;
import com.r11.tools.xml.Saxon;
import com.r11.tools.xml.Xalan;
import com.r11.tools.xml.XmlEngine;
import org.apache.logging.log4j.Logger;
import spark.Request;
@@ -126,7 +124,7 @@ public class XsltController implements RestController {
duration = System.currentTimeMillis() - timeStart;
this.logger.info("Request (XSLT, Saxon) processed in " + duration + " ms.");
responseJson.addProperty("processor", "Saxon " + saxon.getVersion() + " " + version);
responseJson.addProperty("processor", "Saxon " + saxon.getVersion());
responseJson.addProperty("time", duration);
response.body(this.gson.toJson(responseJson));

3
Backend/tools-services/src/main/java/com/r11/tools/xml/Saxon.java
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@@ -47,10 +47,11 @@ public class Saxon implements XmlEngine{
* @throws Exception
*/
@Override
public String executeXQuery(String data, String xquery) throws Exception {
public String executeXQuery(String data, String xquery, String version) throws Exception {
Processor processor = new Processor(false);
XQueryCompiler compiler = processor.newXQueryCompiler();
compiler.setLanguageVersion(version);
XQueryExecutable executable = compiler.compile(xquery);

2
Backend/tools-services/src/main/java/com/r11/tools/xml/Xalan.java
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@@ -135,7 +135,7 @@ public class Xalan implements XmlEngine{
}
@Override
public String executeXQuery(String data, String xquery) throws Exception {
public String executeXQuery(String data, String xquery, String version) throws Exception {
throw new UnsupportedOperationException("Xalan doesn't support XQuery evaluation");
}
}

2
Backend/tools-services/src/main/java/com/r11/tools/xml/XmlEngine.java
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@@ -7,7 +7,7 @@ public interface XmlEngine {
String processXSLT(String data, String transform) throws Exception;
String validate(String data, String xsd) throws Exception;
String executeXQuery(String data, String xquery) throws Exception;
String executeXQuery(String data, String xquery, String version) throws Exception;
public String getVersion();