init code

Change-Id: Icd0948118397b256da70dfbcbbec5520dc5eafd4
Signed-off-by: Zhaoxing <meng.zhaoxing1@zte.com.cn>

13 files changed, 0 insertions, 1296 deletions

diff --git a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/Bpel4RestLightExtensionBundle.java b/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/Bpel4RestLightExtensionBundle.java
deleted file mode 100644
index 88ac53e..0000000
--- a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/Bpel4RestLightExtensionBundle.java
+++ /dev/null
@@ -1,48 +0,0 @@
-/**
- * Copyright 2011 IAAS University of Stuttgart <br>
- * <br>
- * 
- * @author uwe.breitenbuecher@iaas.uni-stuttgart.de
- * 
- */
-/**
- * Copyright 2017 ZTE Corporation.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package de.unistuttgart.iaas.bpel.extensions.bpel4restlight;
-
-import org.apache.ode.bpel.runtime.extension.AbstractExtensionBundle;
-
-
-public class Bpel4RestLightExtensionBundle extends AbstractExtensionBundle {
-	
-	public static final String NAMESPACE = "http://iaas.uni-stuttgart.de/bpel/extensions/bpel4restlight";
-	
-	
-	/** {@inheritDoc} */
-	@Override
-	public String getNamespaceURI() {
-		return NAMESPACE;
-	}
-	
-	/** {@inheritDoc} */
-	@Override
-	public void registerExtensionActivities() {
-		super.registerExtensionOperation("logNodes", EPRDemoOperation.class);
-		super.registerExtensionOperation("PUT", Bpel4RestLightOperation.class);
-		super.registerExtensionOperation("GET", Bpel4RestLightOperation.class);
-		super.registerExtensionOperation("POST", Bpel4RestLightOperation.class);
-		super.registerExtensionOperation("DELETE", Bpel4RestLightOperation.class);
-	}
-}
diff --git a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/Bpel4RestLightOperation.java b/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/Bpel4RestLightOperation.java
deleted file mode 100644
index 2335f49..0000000
--- a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/Bpel4RestLightOperation.java
+++ /dev/null
@@ -1,147 +0,0 @@
-package de.unistuttgart.iaas.bpel.extensions.bpel4restlight;
-
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.InputStream;
-import java.util.Properties;
-
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-import org.apache.ode.bpel.common.FaultException;
-import org.apache.ode.bpel.runtime.extension.AbstractSyncExtensionOperation;
-import org.apache.ode.bpel.runtime.extension.ExtensionContext;
-import org.opentosca.bpel4restlight.rest.HighLevelRestApi;
-import org.opentosca.bpel4restlight.rest.HttpMethod;
-import org.opentosca.bpel4restlight.rest.HttpResponseMessage;
-/**
- * 
- * Copyright 2011 IAAS University of Stuttgart <br>
- * <br>
- * 
- * This class provides 4 BPEL4RestLight ExtensionActivity-operations which
- * correspond to the 4 typical REST-Operations GET, PUT, POST and Delete.
- * 
- * @author uwe.breitenbuecher@iaas.uni-stuttgart.de
- * 
- */
-import org.w3c.dom.Element;
-
-import de.unistuttgart.iaas.bpel.extensions.bpel4restlight.util.Bpel4RestLightUtil;
-import de.unistuttgart.iaas.bpel.util.BPELVariableInjectionUtil;
-import de.unistuttgart.iaas.bpel.util.BpelUtil;
-
-
-public class Bpel4RestLightOperation extends AbstractSyncExtensionOperation {
-  protected static final Log log = LogFactory.getLog(Bpel4RestLightOperation.class);
-  private static final String EXT_PROPERTIES = "wso2bps-ext.properties"; // extra properties setting
-  private static final String MSB_URL = "MSB_URL";  // http://msb:port, ext property msb url, if exist replace the request url 
-  
-  
-	public static String wrapper = "temporary-simple-type-wrapper";
-	private static String msbUrl = null;
-	
-	static {
-      
-      try {
-          File file = new File(EXT_PROPERTIES);
-          if(file.exists()) {
-              Properties p=new Properties();
-              InputStream inputStream = new FileInputStream(file);
-              p.load(inputStream);
-              inputStream.close();
-              msbUrl = p.getProperty(MSB_URL);
-          }
-          
-      } catch (Exception e) {
-          e.printStackTrace();
-      }
-      
-  }
-	
-	
-	private void processResponseMessage(HttpResponseMessage responseMessage, ExtensionContext context, Element element) throws FaultException {
-		// Write responsePayload to designated variable
-		String responsePayloadVariableName = Bpel4RestLightUtil.getMethodAttributeValue(element, MethodAttribute.RESPONSEPAYLOADVARIABLE);
-		String statusCodeVariableName = Bpel4RestLightUtil.getMethodAttributeValue(element, MethodAttribute.STATUSCODEVARIABLE);
-		
-		if (responsePayloadVariableName != null && !responsePayloadVariableName.equals("")) {
-			BpelUtil.writeResponsePayloadToVariable(context, responseMessage.getResponseBody(), responsePayloadVariableName, Bpel4RestLightOperation.wrapper);
-		}
-		
-		if (statusCodeVariableName != null && !statusCodeVariableName.equals("")) {
-			String StatusCode = "" + responseMessage.getStatusCode();  // int can not be casted to String
-			
-			BpelUtil.writeResponsePayloadToVariable(context, StatusCode, statusCodeVariableName, Bpel4RestLightOperation.wrapper);
-			
-		}
-	}
-	
-	/** {@inheritDoc} */
-	@Override
-	protected void runSync(ExtensionContext context, Element element) throws FaultException {
-		element = BPELVariableInjectionUtil.replaceExtensionVariables(context, element);
-		log.debug("LocalName of edited element: " + element.getLocalName());
-		String httpMethod = element.getLocalName();
-		
-		// Extract requestUri
-		String requestUri = getRequestUrl(element);
-		
-		HttpResponseMessage responseMessage = null;
-		String acceptHeader = Bpel4RestLightUtil.extractAcceptHeader(context, element);
-		String contentTypeHeader = Bpel4RestLightUtil.extractContentTypeHeader(context, element);
-		String requestPayload = Bpel4RestLightUtil.extractRequestPayload(context, element);
-		
-		// Execute corresponding HttpMethod via the HighLevelRestApi
-		switch (HttpMethod.valueOf(httpMethod)) {
-		
-			case PUT: {
-				responseMessage = HighLevelRestApi.Put(requestUri, requestPayload, acceptHeader, contentTypeHeader);
-				break;
-			}
-
-			case POST: {
-				responseMessage = HighLevelRestApi.Post(requestUri, requestPayload, acceptHeader, contentTypeHeader);
-				break;
-			}
-			
-			case GET: {
-				responseMessage = HighLevelRestApi.Get(requestUri, acceptHeader, contentTypeHeader);
-				break;
-			}
-			
-			case DELETE: {
-				responseMessage = HighLevelRestApi.Delete(requestUri, acceptHeader, contentTypeHeader);
-				break;
-			}
-		}
-		
-		processResponseMessage(responseMessage, context, element);
-		// Bpel4RestLightOperation.wrapper = null;
-	}
-	
-	
-	/**
-	 * getRequestUrl
-	 * get request url from element, if exists msbUrl property, then replace the ip and port
-	 * @param element
-	 * @return
-	 */
-	private String getRequestUrl(Element element) {
-	  String requestUri = Bpel4RestLightUtil.getMethodAttributeValue(element, MethodAttribute.REQUESTURI);
-	  log.debug("original url:" + requestUri);
-      if(msbUrl == null || "".equals(msbUrl) || "http://msb:port".equals(msbUrl)) {
-          return requestUri;
-      } else {
-          requestUri = requestUri.substring(requestUri.indexOf("//") + 2);
-          int index = requestUri.indexOf("/");
-          if(index == -1) {
-              
-          } else {
-              requestUri = requestUri.substring(index);
-          }
-          requestUri = msbUrl + requestUri;
-          log.debug("changed url:" + requestUri);
-          return requestUri;
-      }
-  }
-}
diff --git a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/EPRDemoOperation.java b/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/EPRDemoOperation.java
deleted file mode 100644
index fd7b4b3..0000000
--- a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/EPRDemoOperation.java
+++ /dev/null
@@ -1,74 +0,0 @@
-/**
- * 
- * Copyright 2011 IAAS University of Stuttgart <br>
- * <br>
- * 
- * THIS CLASS IS USED FOR TEST PURPOSES!
- * 
- * @author uwe.breitenbuecher@iaas.uni-stuttgart.de
- * 
- */
-package de.unistuttgart.iaas.bpel.extensions.bpel4restlight;
-
-import java.net.HttpURLConnection;
-import java.net.URL;
-
-import org.apache.ode.bpel.common.FaultException;
-import org.apache.ode.bpel.o.OPartnerLink;
-import org.apache.ode.bpel.runtime.PartnerLinkInstance;
-import org.apache.ode.bpel.runtime.extension.AbstractSyncExtensionOperation;
-import org.apache.ode.bpel.runtime.extension.ExtensionContext;
-import org.w3c.dom.Element;
-
-import de.unistuttgart.iaas.xml.DomXmlConverter;
-
-
-public class EPRDemoOperation extends AbstractSyncExtensionOperation {
-	
-	/** {@inheritDoc} */
-	@Override
-	protected void runSync(ExtensionContext context, Element element) throws FaultException {
-		System.out.println("bin hier");
-		try {
-			for (OPartnerLink l : context.getInternalInstance().getProcessModel().allPartnerLinks) {
-				
-				PartnerLinkInstance pli = context.getPartnerLinkInstance(l);
-				
-				Element epr = context.getInternalInstance().fetchPartnerRoleEndpointReferenceData(pli);
-				System.out.println("EPR|||");
-				System.out.println(DomXmlConverter.nodeToString(epr, null));
-				
-				System.out.println(epr.getChildNodes().item(0).getChildNodes().item(1).getNodeName());
-				System.out.println(epr.getChildNodes().item(0).getChildNodes().item(1).getTextContent());
-				System.out.println("..");
-				System.out.println(epr.getChildNodes().item(0).getChildNodes().item(1).getChildNodes().item(0).getTextContent());
-				
-				epr.getChildNodes().item(0).getChildNodes().item(1).getChildNodes().item(0).setTextContent("http://localhost:8084/FRP/rrr");
-				
-				System.out.println(epr.getChildNodes().item(0).getChildNodes().item(1).getChildNodes().item(0).getTextContent());
-				
-				System.out.println(context.getDUDir().toString());
-				
-			}
-			
-		} catch (Exception e) {
-			e.printStackTrace();
-		}
-		
-		System.out.println("ich bin hiiiiiiiiiier!!");
-		
-		try {
-			URL url = new URL("http://localhost:8084/FRP/rrr");
-			
-			HttpURLConnection connection = (HttpURLConnection) url.openConnection();
-			connection.setRequestMethod("PUT");
-			
-			int responseCode = connection.getResponseCode();
-			System.out.println(responseCode);
-			
-		} catch (Exception e) {
-			e.printStackTrace();
-		}
-	}
-	
-}
diff --git a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/MethodAttribute.java b/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/MethodAttribute.java
deleted file mode 100644
index ce80c16..0000000
--- a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/MethodAttribute.java
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * 
- * Copyright 2011 IAAS University of Stuttgart <br>
- * <br>
- * 
- * This enum is used to decouple DOM-Attribute names from their
- * String-representation within a certain library (for portability issues)
- * 
- * @author uwe.breitenbuecher@iaas.uni-stuttgart.de
- * 
- */
-package de.unistuttgart.iaas.bpel.extensions.bpel4restlight;
-
-
-public enum MethodAttribute {
-	REQUESTURI, REQUESTPAYLOADVARIABLE, RESPONSEPAYLOADVARIABLE, STATUSCODEVARIABLE, ACCEPTHEADER, CONTENTTYPE;
-}
\ No newline at end of file
diff --git a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/util/Bpel4RestLightUtil.java b/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/util/Bpel4RestLightUtil.java
deleted file mode 100644
index 1c9d7d1..0000000
--- a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/util/Bpel4RestLightUtil.java
+++ /dev/null
@@ -1,113 +0,0 @@
-/**
- * Copyright 2011 IAAS University of Stuttgart <br>
- * <br>
- * 
- * @author uwe.breitenbuecher@iaas.uni-stuttgart.de
- * 
- */
-package de.unistuttgart.iaas.bpel.extensions.bpel4restlight.util;
-
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-import org.apache.ode.bpel.common.FaultException;
-import org.apache.ode.bpel.runtime.extension.ExtensionContext;
-import org.w3c.dom.Element;
-import org.w3c.dom.Node;
-
-import de.unistuttgart.iaas.bpel.extensions.bpel4restlight.Bpel4RestLightOperation;
-import de.unistuttgart.iaas.bpel.extensions.bpel4restlight.MethodAttribute;
-import de.unistuttgart.iaas.xml.DomXmlConverter;
-
-
-public class Bpel4RestLightUtil {
-  protected static final Log log = LogFactory.getLog(Bpel4RestLightUtil.class);
-	/**
-	 * This function extracts the requestPayload specified in the passed
-	 * element. This requestPayload is either the content contained in a special
-	 * BPEL-Variable which is referenced by name by a special attribute of the
-	 * passed element or the content contained in the first child node of the
-	 * passed element
-	 * 
-	 * @param context ExtensionContext
-	 * @param element Element from which the requestPayload has to be extracted
-	 * @return RequestPayload as String
-	 * @throws FaultException
-	 */
-	public static String extractRequestPayload(ExtensionContext context, Element element) throws FaultException {
-		
-		String requestPayload = "";
-		
-		String requestPayloadVariableName = getMethodAttributeValue(element, MethodAttribute.REQUESTPAYLOADVARIABLE);
-		
-		if (requestPayloadVariableName != null && requestPayloadVariableName != "") {
-			Node requestVariableNode = context.readVariable(requestPayloadVariableName);
-			if (requestVariableNode.getLocalName().equals("temporary-simple-type-wrapper")) {
-				Bpel4RestLightOperation.wrapper = "temporary-simple-type-wrapper";
-				requestPayload = DomXmlConverter.nodeToString(requestVariableNode, "temporary-simple-type-wrapper");
-			} else {
-				requestPayload = DomXmlConverter.nodeToString(requestVariableNode, null);
-			}
-			log.debug("The pure request variable as String: \n" + DomXmlConverter.nodeToString(requestVariableNode, null) + "\n");
-		}
-		
-		return requestPayload;
-	}
-	
-	public static String extractAcceptHeader(ExtensionContext context, Element element) throws FaultException {
-		return getMethodAttributeValue(element, MethodAttribute.ACCEPTHEADER);
-	}
-	
-	public static String extractContentTypeHeader(ExtensionContext context, Element element) throws FaultException {
-      return getMethodAttributeValue(element, MethodAttribute.CONTENTTYPE);
-  }
-	
-	/**
-	 * This function extracts special predefined attributes (see
-	 * {@link MethodAttribute}) from a passed DOM-Element
-	 * 
-	 * @param element Element containing the requested Attribute-Value
-	 * @param methodAttribute Attribute whose content has to be returned
-	 * @return Value / Content of the attribute
-	 */
-	public static String getMethodAttributeValue(Element element, MethodAttribute methodAttribute) {
-		
-		String result = "";
-		
-		switch (methodAttribute) {
-		
-			case REQUESTURI:
-				result = element.getAttribute("uri");
-				
-				if (result == null || "".equals(result)) {
-					result = element.getAttribute("requestUri");
-				}
-				break;
-			case REQUESTPAYLOADVARIABLE:
-				result = element.getAttribute("request");
-				
-				if (result == null || "".equals(result)) {
-					result = element.getAttribute("requestPayload");
-				}
-				break;
-			case RESPONSEPAYLOADVARIABLE:
-				result = element.getAttribute("response");
-				
-				if (result == null || "".equals(result)) {
-					result = element.getAttribute("responsePayload");
-				}
-				break;
-			case STATUSCODEVARIABLE:
-				result = element.getAttribute("statusCode");
-				break;
-			case ACCEPTHEADER:
-				result = element.getAttribute("accept");
-				break;
-			case CONTENTTYPE:
-			  result = element.getAttribute("contentType");
-			  break;
-		}
-		
-		return result;
-	}
-	
-}
diff --git a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/util/BPELVariableInjectionUtil.java b/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/util/BPELVariableInjectionUtil.java
deleted file mode 100644
index 2298bf1..0000000
--- a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/util/BPELVariableInjectionUtil.java
+++ /dev/null
@@ -1,149 +0,0 @@
-/**
- * Copyright 2011
- * 
- * @author Uwe Breitenbuecher
- * 
- *         This class provides some methods for BPEL-Variable-Injection
- */
- package de.unistuttgart.iaas.bpel.util;
-
-import java.io.IOException;
-import java.io.StringReader;
-import java.io.StringWriter;
-
-import javax.xml.parsers.DocumentBuilder;
-import javax.xml.parsers.DocumentBuilderFactory;
-import javax.xml.parsers.ParserConfigurationException;
-import javax.xml.transform.OutputKeys;
-import javax.xml.transform.Transformer;
-import javax.xml.transform.TransformerFactory;
-import javax.xml.transform.dom.DOMSource;
-import javax.xml.transform.stream.StreamResult;
-
-import org.apache.ode.bpel.common.FaultException;
-import org.apache.ode.bpel.runtime.extension.ExtensionContext;
-import org.w3c.dom.Document;
-import org.w3c.dom.Element;
-import org.w3c.dom.Node;
-import org.xml.sax.InputSource;
-import org.xml.sax.SAXException;
-
-
-public class BPELVariableInjectionUtil {
-	
-	/**
-	 * This method serializes a Node into a String
-	 * 
-	 * @param node
-	 * @return String representation of the node
-	 */
-	public static String nodeToString(Node node) {
-		try {
-			
-			if (node != null && node.getLocalName().equals("temporary-simple-type-wrapper")) {
-				// this is a temporary hack for string variables and the likes,
-				// as you may see ODE wrappes simpletypes in wrapper-elements,
-				// but this isn't great here
-				return node.getTextContent();
-			}
-			
-			// Create transformer
-			TransformerFactory transformerFactory = TransformerFactory.newInstance();
-			Transformer transformer = transformerFactory.newTransformer();
-			
-			// Transform Node into a String representation by regarding some
-			// formatting rules
-			StringWriter stringWriter = new StringWriter();
-			transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
-			transformer.setOutputProperty(OutputKeys.INDENT, "yes");
-			transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "3");
-			transformer.transform(new DOMSource(node), new StreamResult(stringWriter));
-			
-			// Return build string
-			return stringWriter.toString();
-		} catch (Exception e) {
-			e.printStackTrace();
-		}
-		
-		// If any error occurs, return empty string
-		return "";
-	}
-	
-	/**
-	 * This method executes the BPEL-Variable-Injection. It replaces referenced
-	 * BPEL-Variables with corresponding content
-	 * 
-	 * @param context ExtensionContext of process
-	 * @param element DOM-Representation of the BPEL-Code in which the
-	 *            Variable-Injection has to be done
-	 * @return modified BPEL-Code as DOM-Representation
-	 */
-	public static Element replaceExtensionVariables(ExtensionContext context, Element element) {
-		
-		try {
-			String BPELCodeAsString;
-			
-			// Transform BPEL-Code (DOM-Representation) into a String
-			BPELCodeAsString = nodeToString(element);
-			
-			// Find and replace referenced BPEL-Variables
-			int startIndex = BPELCodeAsString.indexOf("$bpelvar[");
-			if (startIndex != -1) {
-				while (startIndex != -1) {
-					int endIndex = startIndex;
-					while (BPELCodeAsString.charAt(endIndex) != ']') {
-						endIndex++;
-					}
-					
-					// Extract name of referenced variable
-					String variableName = BPELCodeAsString.substring(startIndex + 9, endIndex);
-					
-					// Extract content of referenced variable
-					Node variableContent = context.readVariable(variableName);
-					
-					System.out.println("Replacing variable " + variableName + "(" + variableContent.getNamespaceURI() + " " + variableContent.getLocalName() + ") with content: \n");
-					System.out.println("NodeValue(): " + variableContent.getNodeValue() + "\n");
-					System.out.println("TextContent(): " + variableContent.getTextContent());
-					System.out.println("The full bpel script (before change) as string: \n" + BPELCodeAsString + "\n");
-					
-					// Replace variable-reference with corresponding content
-					BPELCodeAsString = BPELCodeAsString.replace("$bpelvar[" + variableName + "]", nodeToString(variableContent));
-					
-					System.out.println("The full bpel script as string: \n" + BPELCodeAsString + "\n");
-					startIndex = BPELCodeAsString.indexOf("$bpelvar[");
-				}
-				
-				// Transform modified code (String) into DOM-Representation
-				DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
-				factory.setNamespaceAware(true);
-				DocumentBuilder builder = factory.newDocumentBuilder();
-				
-				InputSource inputSource = new InputSource();
-				inputSource.setCharacterStream(new StringReader(BPELCodeAsString));
-				Document newDocument = builder.parse(inputSource);
-				
-				// Return first child (because Document root is not needed)
-				return (Element) newDocument.getFirstChild();
-				
-			} else {
-				
-				// If no referenced variables are found, return original code
-				return element;
-			}
-		} catch (ParserConfigurationException e) {
-			e.printStackTrace();
-		} catch (SAXException e) {
-			// TODO Auto-generated catch block
-			e.printStackTrace();
-		} catch (IOException e) {
-			// TODO Auto-generated catch block
-			e.printStackTrace();
-		} catch (FaultException e) {
-			// TODO Auto-generated catch block
-			e.printStackTrace();
-		}
-		
-		return null;
-	}
-	
-}
diff --git a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/util/BpelUtil.java b/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/util/BpelUtil.java
deleted file mode 100644
index 33c0d54..0000000
--- a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/util/BpelUtil.java
+++ /dev/null
@@ -1,102 +0,0 @@
-/**
- * Copyright 2011 IAAS University of Stuttgart <br>
- * <br>
- * 
- * @author uwe.breitenbuecher@iaas.uni-stuttgart.de
- * 
- */
-package de.unistuttgart.iaas.bpel.util;
-
-import java.io.IOException;
-import java.io.StringReader;
-
-import javax.xml.parsers.DocumentBuilder;
-import javax.xml.parsers.DocumentBuilderFactory;
-import javax.xml.parsers.ParserConfigurationException;
-
-import org.apache.ode.bpel.common.FaultException;
-import org.apache.ode.bpel.evar.ExternalVariableModuleException;
-import org.apache.ode.bpel.o.OScope.Variable;
-import org.apache.ode.bpel.runtime.extension.ExtensionContext;
-import org.w3c.dom.Document;
-import org.w3c.dom.Node;
-import org.xml.sax.InputSource;
-import org.xml.sax.SAXException;
-
-
-public class BpelUtil {
-	
-	/**
-	 * This function writes a passed content to a specified processVariable
-	 * (referenced by name). The content will be converted into its
-	 * DOM-Representation for overwriting the processVariableContent (therefore
-	 * it has to be XML-serializable, e.g. for complex data types there have to
-	 * be JAX-B Annotations within the corresponding Class)
-	 * 
-	 * @param context ExtensionContext needed to access the processVariable
-	 * @param content New content for the specified processVariable
-	 * @param processVariableName Variable whose content has to be overwritten
-	 * @throws FaultException
-	 */
-	public static void writeContentToBPELVariable(ExtensionContext context, Object content, String processVariableName, String wrapper) throws FaultException {
-		// check the node
-		System.out.println("The content object: " + content + "\n");
-		// small hack for test
-		Node hackNode = null;
-		System.out.println("Trying to parse string to dom: " + ((String) content) + "\n");
-		
-		if (wrapper != null) {
-			// a hack for simple type wrapper
-			content = "<" + wrapper + ">" + (String) content + "</" + wrapper + ">";
-		}
-		try {
-			hackNode = stringToDom((String) content);
-		} catch (ParserConfigurationException e1) {
-			// TODO Auto-generated catch block
-			e1.printStackTrace();
-		} catch (SAXException e1) {
-			// TODO Auto-generated catch block
-			e1.printStackTrace();
-		} catch (IOException e1) {
-			// TODO Auto-generated catch block
-			e1.printStackTrace();
-		}
-		
-		Variable bpelVariable = context.getVisibleVariables().get(processVariableName);
-		if (hackNode == null) {
-			System.out.println("hackNode is null! \n");
-		}
-		if (bpelVariable == null) {
-			System.out.println("bpelVariable is null! \n");
-		}
-		try {
-			// replaced responseAsNode to hackNode
-			context.writeVariable(bpelVariable, hackNode);
-		} catch (ExternalVariableModuleException e) {
-			e.printStackTrace();
-		}
-		
-	}
-	
-	/**
-	 * This function writes a String to a BPEL Variable of type XSD-String
-	 * 
-	 * @param context ExtensionContext
-	 * @param responsePayload ResponsePayload as String
-	 * @param processVariableName Name of the target BPEL variable
-	 * @throws FaultException
-	 */
-	public static void writeResponsePayloadToVariable(ExtensionContext context, Object responsePayload, String processVariableName, String wrapper) throws FaultException {
-		BpelUtil.writeContentToBPELVariable(context, responsePayload, processVariableName, wrapper);
-	}
-	
-	private static Node stringToDom(String xmlString) throws ParserConfigurationException, SAXException, IOException {
-		DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
-		factory.setNamespaceAware(true);
-		DocumentBuilder builder = factory.newDocumentBuilder();
-		InputSource is = new InputSource(new StringReader(xmlString));
-		Document d = builder.parse(is);
-		return d.getFirstChild();
-	}
-	
-}
diff --git a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/xml/DomXmlConverter.java b/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/xml/DomXmlConverter.java
deleted file mode 100644
index cbce6e8..0000000
--- a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/xml/DomXmlConverter.java
+++ /dev/null
@@ -1,179 +0,0 @@
-/**
- * 
- * Copyright 2011 IAAS University of Stuttgart <br>
- * <br>
- * 
- * @author uwe.breitenbuecher@iaas.uni-stuttgart.de
- * 
- */
-package de.unistuttgart.iaas.xml;
-
-import java.io.StringWriter;
-import java.util.ArrayList;
-import java.util.List;
-
-import javax.xml.bind.JAXBContext;
-import javax.xml.bind.Marshaller;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.parsers.DocumentBuilderFactory;
-import javax.xml.transform.OutputKeys;
-import javax.xml.transform.Result;
-import javax.xml.transform.Source;
-import javax.xml.transform.Transformer;
-import javax.xml.transform.TransformerFactory;
-import javax.xml.transform.dom.DOMSource;
-import javax.xml.transform.stream.StreamResult;
-
-import org.w3c.dom.Document;
-import org.w3c.dom.Node;
-import org.w3c.dom.NodeList;
-
-
-public class DomXmlConverter {
-	
-	// Single instance of transformer
-	private static Transformer xmlTransformer;
-	
-	
-	/**
-	 * Converts a Node to its String-representation
-	 * 
-	 * @param node Node which has to be converted
-	 * @return String representation of the passed node
-	 */
-	public static String nodeToString(Node node, String wrapperElement) {
-		try {
-			System.out.println("\n\n\n");
-			System.out.println("check if node got a namespace: " + node.getNamespaceURI());
-			if (wrapperElement != null) {
-				// this hack is need as ODE wrapps simpletypes in such elements
-				return node.getTextContent();
-			}
-			
-			Source source = new DOMSource(node);
-			
-			StringWriter writer = new StringWriter();
-			Result result = new StreamResult(writer);
-			
-			Transformer transformer = DomXmlConverter.getTransformer();
-			transformer.transform(source, result);
-			
-			return writer.toString();
-		} catch (Exception e) {
-			e.printStackTrace();
-		}
-		return "Parsing error";
-	}
-	
-	/**
-	 * Singleton implementation of transformer access
-	 * 
-	 * @return Transformer
-	 * @throws Exception
-	 */
-	private static synchronized Transformer getTransformer() throws Exception {
-		if (DomXmlConverter.xmlTransformer == null) {
-			DomXmlConverter.xmlTransformer = TransformerFactory.newInstance().newTransformer();
-			DomXmlConverter.xmlTransformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
-			DomXmlConverter.xmlTransformer.setOutputProperty(OutputKeys.INDENT, "yes");
-			DomXmlConverter.xmlTransformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
-		}
-		return DomXmlConverter.xmlTransformer;
-	}
-	
-	/**
-	 * This method converts a NodeList into a List of Strings. Each string
-	 * represents the TextContent of each Node contained in the NodeList
-	 * 
-	 * @param nodeList which contains the Nodes
-	 * @return List of TextContents of each node
-	 */
-	public static List<String> convertNodeListToStringList(NodeList nodeList) {
-		List<String> resultList = new ArrayList<String>();
-		
-		for (int i = 0; i < nodeList.getLength(); i++) {
-			resultList.add(nodeList.item(i).getTextContent());
-		}
-		
-		return resultList;
-	}
-	
-	/**
-	 * This method converts a NodeList into a List of Nodes
-	 * 
-	 * @param nodeList
-	 * @return List of Nodes
-	 */
-	public static List<Node> convertNodeListToList(NodeList nodeList) {
-		List<Node> resultList = new ArrayList<Node>(nodeList.getLength());
-		for (int i = 0; i < nodeList.getLength(); i++) {
-			resultList.add(nodeList.item(i));
-		}
-		return resultList;
-	}
-	
-	
-	/**
-	 * Helper-Class for converting an Object into its DOM-Representation. The
-	 * SerializingContainer is a Wrapper to enable the serialization of any
-	 * object via JAXB.
-	 */
-	@XmlRootElement
-	private static class SerializingContainer {
-		
-		Object object;
-		
-		
-		public Object getObject() {
-			return this.object;
-		}
-		
-		public void setObject(Object object) {
-			this.object = object;
-		}
-		
-	}
-	
-	
-	/**
-	 * This methods converts an Object into its DOM-Representation
-	 * 
-	 * @param object which have to be converted
-	 * @return DOM-Representation of the object
-	 */
-	public static Node convertObjectToDom(Object object) {
-		try {
-			
-			// Create new SerializingContainer and pack the object, which has to
-			// be serialized, into it. This has to be done, because JAXB
-			// only marshalls objects of classes annotated with the
-			// @XmlRootElement-Annotation.
-			SerializingContainer container = new SerializingContainer();
-			container.setObject(object);
-			
-			// Create empty Document
-			Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
-			
-			// Create JAXBContext and bind classes
-			Class<?>[] classesToBeBound = new Class[] {SerializingContainer.class, container.getObject().getClass()};
-			JAXBContext jaxbContext = JAXBContext.newInstance(classesToBeBound, null);
-			
-			Marshaller marshaller = jaxbContext.createMarshaller();
-			
-			// Set some properties
-			marshaller.setProperty(Marshaller.JAXB_FRAGMENT, Boolean.TRUE);
-			marshaller.setProperty(Marshaller.JAXB_ENCODING, "UTF-8");
-			
-			// Marshall container into document.
-			marshaller.marshal(container, document);
-			
-			// Extract only the contained information in the serialized
-			// DOM-Representation of the SerializingContainer
-			return document.getFirstChild().getFirstChild();
-			
-		} catch (Exception e) {
-			return null;
-		}
-	}
-	
-}
diff --git a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/xml/XPathEvaluator.java b/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/xml/XPathEvaluator.java
deleted file mode 100644
index 0ae6b2c..0000000
--- a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/xml/XPathEvaluator.java
+++ /dev/null
@@ -1,34 +0,0 @@
-/**
- * 
- * Copyright 2011 IAAS University of Stuttgart <br>
- * <br>
- * 
- * @author uwe.breitenbuecher@iaas.uni-stuttgart.de
- * 
- */
-package de.unistuttgart.iaas.xml;
-
-import javax.xml.namespace.QName;
-import javax.xml.xpath.XPath;
-import javax.xml.xpath.XPathFactory;
-
-
-public class XPathEvaluator {
-	
-	public static XPath xpath = XPathFactory.newInstance().newXPath();
-	
-	
-	@SuppressWarnings("unchecked")
-	public static <t> t evaluate(String expression, Object source, QName returnType) {
-		
-		Object resultAsObject = null;
-		try {
-			resultAsObject = xpath.evaluate(expression, source, returnType);
-			
-		} catch (Exception e) {
-			e.printStackTrace();
-		}
-		return (t) resultAsObject;
-	}
-	
-}
diff --git a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/org/opentosca/bpel4restlight/rest/HighLevelRestApi.java b/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/org/opentosca/bpel4restlight/rest/HighLevelRestApi.java
deleted file mode 100644
index ec10959..0000000
--- a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/org/opentosca/bpel4restlight/rest/HighLevelRestApi.java
+++ /dev/null
@@ -1,178 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2012-2013 University of Stuttgart.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * and the Apache License 2.0 which both accompany this distribution,
- * and are available at http://www.eclipse.org/legal/epl-v10.html
- * and http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-/*
- * Modifications Copyright 2016-2017 ZTE Corporation.
- */
-/**
- * This class wraps HTTP-Method functionality and thereby abstracts from low
- * level code to simplify the usage.
- */
-package org.opentosca.bpel4restlight.rest;
-
-import org.apache.commons.httpclient.HttpMethodBase;
-import org.apache.commons.httpclient.NameValuePair;
-import org.apache.commons.httpclient.methods.DeleteMethod;
-import org.apache.commons.httpclient.methods.GetMethod;
-import org.apache.commons.httpclient.methods.PostMethod;
-import org.apache.commons.httpclient.methods.PutMethod;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-import org.apache.http.HttpHeaders;
-
-
-public class HighLevelRestApi {
-  protected static final Log log = LogFactory.getLog(HighLevelRestApi.class);
-	/**
-	 * This method implements the HTTP Put Method
-	 * 
-	 * @param uri
-	 *            Resource URI
-	 * @param requestPayload
-	 *            Content which has to be put into the Resource
-	 * @return ResponseCode of HTTP Interaction
-	 */
-	@SuppressWarnings("deprecation")
-	public static HttpResponseMessage Put(String uri, String requestPayload, String acceptHeaderValue, String contentTypeHeader) {
-
-		PutMethod method = new PutMethod(uri);
-		// requestPayload = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" +
-		// requestPayload;
-
-		HighLevelRestApi.setHeader(method, acceptHeaderValue, contentTypeHeader);
-		method.setRequestBody(requestPayload);
-
-		HttpResponseMessage responseMessage = LowLevelRestApi.executeHttpMethod(method);
-
-		// kill <?xml... in front of response
-		HighLevelRestApi.cleanResponseBody(responseMessage);
-
-		return responseMessage;
-	}
-
-	/**
-	 * This method implements the HTTP Post Method
-	 * 
-	 * @param uri
-	 *            Resource URI
-	 * @param requestPayload
-	 *            Content which has to be posted into the Resource
-	 * @return ResponseCode of HTTP Interaction
-	 */
-	@SuppressWarnings("deprecation")
-	public static HttpResponseMessage Post(String uri, String requestPayload, String acceptHeaderValue, String contentTypeHeader) {
-
-		PostMethod method = null;
-		if (uri.contains("?")) {
-			log.debug("Found query trying to split");
-			String[] split = uri.split("\\?");
-			log.debug("Raw URI part: " + split[0]);
-			log.debug("Raw Query part: " + split[1]);
-			method = new PostMethod(split[0]);
-			method.setQueryString(HighLevelRestApi.createNameValuePairArrayFromQuery(split[1]));
-		} else {
-			method = new PostMethod(uri);
-			;
-		}
-		method.setRequestBody(requestPayload);
-		HighLevelRestApi.setHeader(method, acceptHeaderValue, contentTypeHeader);
-		HttpResponseMessage responseMessage = LowLevelRestApi.executeHttpMethod(method);
-		HighLevelRestApi.cleanResponseBody(responseMessage);
-		return responseMessage;
-	}
-
-	/**
-	 * This method implements the HTTP Get Method
-	 * 
-	 * @param uri
-	 *            Resource URI
-	 * @return Content represented by the Resource URI
-	 */
-	public static HttpResponseMessage Get(String uri, String acceptHeaderValue, String contentTypeHeader) {
-		log.debug("Setting URI to: \n");
-		log.debug(uri);
-		GetMethod method = null;
-		if (uri.contains("?")) {
-		  log.debug("Found query trying to split");
-			String[] split = uri.split("\\?");
-			log.debug("Raw URI part: " + split[0]);
-			log.debug("Raw Query part: " + split[1]);
-			
-			method = new GetMethod(split[0]);
-			method.setQueryString(HighLevelRestApi.createNameValuePairArrayFromQuery(split[1]));
-		} else {
-			method = new GetMethod(uri);
-		}
-		HighLevelRestApi.setHeader(method, acceptHeaderValue, contentTypeHeader);
-		HttpResponseMessage responseMessage = LowLevelRestApi.executeHttpMethod(method);
-		HighLevelRestApi.cleanResponseBody(responseMessage);
-		return responseMessage;
-	}
-
-	private static NameValuePair[] createNameValuePairArrayFromQuery(String query) {
-		// example:
-		// csarID=Moodle.csar&serviceTemplateID={http://www.example.com/tosca/ServiceTemplates/Moodle}Moodle&nodeTemplateID={http://www.example.com/tosca/ServiceTemplates/Moodle}VmApache
-		log.debug("Splitting query: " + query);
-		String[] pairs = query.trim().split("&");
-		NameValuePair[] nameValuePairArray = new NameValuePair[pairs.length];
-		int count = 0;
-		for (String pair : pairs) {
-		  log.debug("Splitting query pair: " + pair);
-			String[] keyValue = pair.split("=");
-			NameValuePair nameValuePair = new NameValuePair();
-			log.debug("Key: " + keyValue[0] + " Value: " + keyValue[1]);
-			nameValuePair.setName(keyValue[0]);
-			nameValuePair.setValue(keyValue[1]);
-			nameValuePairArray[count] = nameValuePair;
-			count++;
-		}
-		return nameValuePairArray;
-	}
-
-	/**
-	 * This method implements the HTTP Delete Method
-	 * 
-	 * @param uri
-	 *            Resource URI
-	 * @return ResponseCode of HTTP Interaction
-	 */
-	public static HttpResponseMessage Delete(String uri, String acceptHeaderValue, String contentTypeHeader) {
-
-		DeleteMethod method = new DeleteMethod(uri);
-		HighLevelRestApi.setHeader(method, acceptHeaderValue, contentTypeHeader);
-		HttpResponseMessage responseMessage = LowLevelRestApi.executeHttpMethod(method);
-		HighLevelRestApi.cleanResponseBody(responseMessage);
-		return responseMessage;
-	}
-
-	private static void setHeader(HttpMethodBase method, String accept, String contentType) {
-		if (!"".equals(accept)) {
-			method.setRequestHeader(HttpHeaders.ACCEPT, accept);
-		} else {
-			method.setRequestHeader(HttpHeaders.ACCEPT, "application/xml");
-		}
-		
-		if (contentType != null && !"".equals(contentType)) {
-		  method.setRequestHeader(HttpHeaders.CONTENT_TYPE, contentType);
-        } else {
-//          method.setRequestHeader("Accept", accept);
-        }
-		
-	}
-
-	private static void cleanResponseBody(HttpResponseMessage responseMessage) {
-	  log.debug("ResponseBody: \n");
-	  if (responseMessage != null && responseMessage.getResponseBody() != null) {  
-	    log.debug(responseMessage.getResponseBody());
-	    String temp = responseMessage.getResponseBody()
-	        .replace("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>", "");
-	    responseMessage.setResponseBody(temp);
-	  }
-	}
-	
-}
diff --git a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/org/opentosca/bpel4restlight/rest/HttpMethod.java b/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/org/opentosca/bpel4restlight/rest/HttpMethod.java
deleted file mode 100644
index 209cca3..0000000
--- a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/org/opentosca/bpel4restlight/rest/HttpMethod.java
+++ /dev/null
@@ -1,20 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2012-2013 University of Stuttgart.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * and the Apache License 2.0 which both accompany this distribution,
- * and are available at http://www.eclipse.org/legal/epl-v10.html
- * and http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-/*
- * Modifications Copyright 2016-2017 ZTE Corporation.
- */
-/**
- * This enum is intended to simplify identifying different HTTP-methods
- */
-package org.opentosca.bpel4restlight.rest;
-
-
-public enum HttpMethod {
-	PUT, POST, GET, DELETE
-}
\ No newline at end of file
diff --git a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/org/opentosca/bpel4restlight/rest/HttpResponseMessage.java b/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/org/opentosca/bpel4restlight/rest/HttpResponseMessage.java
deleted file mode 100644
index 07198d8..0000000
--- a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/org/opentosca/bpel4restlight/rest/HttpResponseMessage.java
+++ /dev/null
@@ -1,53 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2012-2013 University of Stuttgart.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * and the Apache License 2.0 which both accompany this distribution,
- * and are available at http://www.eclipse.org/legal/epl-v10.html
- * and http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-/*
- * Modifications Copyright 2016-2017 ZTE Corporation.
- */
-/**
- * This enum is intended to simplify identifying different HTTP-methods
- */
-package org.opentosca.bpel4restlight.rest;
-
-/**
- */
-public class HttpResponseMessage {
-	
-	private int statusCode;
-	private String responseBody;
-	
-	
-	/**
-	 * @return the statusCode
-	 */
-	public int getStatusCode() {
-		return this.statusCode;
-	}
-	
-	/**
-	 * @param statusCode the statusCode to set
-	 */
-	protected void setStatusCode(int statusCode) {
-		this.statusCode = statusCode;
-	}
-	
-	/**
-	 * @return the responseBody
-	 */
-	public String getResponseBody() {
-		return this.responseBody;
-	}
-	
-	/**
-	 * @param responseBody the responseBody to set
-	 */
-	protected void setResponseBody(String responseBody) {
-		this.responseBody = responseBody;
-	}
-	
-}
diff --git a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/org/opentosca/bpel4restlight/rest/LowLevelRestApi.java b/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/org/opentosca/bpel4restlight/rest/LowLevelRestApi.java
deleted file mode 100644
index c522ca9..0000000
--- a/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/org/opentosca/bpel4restlight/rest/LowLevelRestApi.java
+++ /dev/null
@@ -1,182 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2012-2013 University of Stuttgart.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * and the Apache License 2.0 which both accompany this distribution,
- * and are available at http://www.eclipse.org/legal/epl-v10.html
- * and http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-/*
- * Modifications Copyright 2016-2017 ZTE Corporation.
- */
- /**
- * This static-class eases HTTP-method execution by self-managed fault-handling
- * and automated Response-information processing
- */
-package org.opentosca.bpel4restlight.rest;
-
-import java.io.IOException;
-import java.util.Map;
-import java.util.Set;
-
-import org.apache.commons.httpclient.Header;
-import org.apache.commons.httpclient.HttpClient;
-import org.apache.commons.httpclient.HttpMethod;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-import org.json.simple.JSONArray;
-import org.json.simple.JSONObject;
-import org.json.simple.parser.JSONParser;
-import org.json.simple.parser.ParseException;
-
-
-public class LowLevelRestApi {
-	
-  protected static final Log log = LogFactory.getLog(LowLevelRestApi.class);
-	// Local HttpClient used for every communication (Singleton implementation)
-//	private static HttpClient httpClient = new HttpClient();
-	
-	/**
-	 * Executes a passed HttpMethod (Method type is either PUT, POST, GET or
-	 * DELETE) and returns a HttpResponseMessage
-	 * 
-	 * @param method Method to execute
-	 * @return HttpResponseMessage which contains all information about the
-	 *         execution
-	 */
-	public static HttpResponseMessage executeHttpMethod(HttpMethod method) {
-		
-		HttpResponseMessage responseMessage = null;
-		
-		try {
-			log.debug("Method invocation on URI: \n");
-			log.debug(method.getURI().toString());
-			
-			// Execute Request
-			HttpClient httpClient = new HttpClient();
-			httpClient.executeMethod(method);
-			responseMessage = LowLevelRestApi.extractResponseInformation(method);
-			
-		} catch (Exception e) {
-		  log.error("call rest error:", e);
-		} finally {
-			// Release Connection anyway
-			method.releaseConnection();
-		}
-		
-		// Extract response information and return
-		return responseMessage;
-	}
-	
-	/**
-	 * Extracts the response information from an executed HttpMethod
-	 * 
-	 * @param method Executed Method
-	 * @return Packaged response information
-	 */
-	private static HttpResponseMessage extractResponseInformation(HttpMethod method) {
-		// Create and return HttpResponseMethod
-		HttpResponseMessage responseMessage = new HttpResponseMessage();
-		responseMessage.setStatusCode(method.getStatusCode());
-		try {
-			responseMessage.setResponseBody(getResponseBody(method));
-		} catch (Exception e) {
-		    log.error(e);
-		}
-		return responseMessage;
-		
-	}
-	
-	/**
-	 * getResponseBody 
-	 * 
-	 * get response body info, if response body is a json object, then translate json object to xml
-	 * if the rest request failed, i.e. the response body is a 404 error page, then response the body with header <root>
-	 * @param method
-	 * @return
-	 * @throws ParseException
-	 */
-	private static String getResponseBody(HttpMethod method) throws ParseException
-	{
-	  String result = null;
-	  try {
-	    result = method.getResponseBodyAsString();
-		log.debug("result:");
-		log.debug(result);
-	  } catch (IOException e) {
-	    log.error(e);
-	  }
-	  
-	  Header header = method.getRequestHeader("Accept");
-	  if ("application/json".equals(header.getValue())) {
-	    StringBuilder sb = new StringBuilder();
-	    sb.append("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>");
-	    sb.append("<root>");
-	    if(result != null && !"".equals(result)) {
-	      /**
-		  if(result.startsWith("<html>")) {
-	        sb.append("<![CDATA[");
-	        sb.append(result);
-	        sb.append("]]>");
-	      } else {
-	        Object json = new JSONParser().parse(result);
-	        json2Xml(sb, "obj", json);
-	      }
-		  */
-		  
-		  try {
-			Object json = new JSONParser().parse(result);
-	        json2Xml(sb, "obj", json);
-		  } catch (Exception e) {
-			log.error(e);
-			sb.append("<![CDATA[");
-	        sb.append(result);
-	        sb.append("]]>");
-		  }
-	    }
-	    sb.append("</root>");
-	    
-		log.debug("responseBody:");
-		log.debug(sb.toString());
-	    return sb.toString();
-	  }
-	  return result;
-	}
-	
-	
-	@SuppressWarnings("unchecked")
-	public static void json2Xml(StringBuilder sb, String key,  Object jsonObject) {
-	  if(jsonObject == null) {
-	    sb.append("<error>empty</error>");
-	    return;
-	  }
-	  
-	  if(jsonObject instanceof JSONArray) {
-	    JSONArray array = (JSONArray) jsonObject;
-	    sb.append("<").append(key).append("s").append(">");
-	    for(int i=0, len=array.size(); i<len; i++) {
-	      json2Xml(sb, key, array.get(i));
-	    }
-	    sb.append("</").append(key).append("s").append(">");
-	    
-	    return;
-	  } else if(jsonObject instanceof JSONObject) {
-	    sb.append("<").append(key).append(">");
-	    JSONObject json = (JSONObject) jsonObject;
-	    for(Map.Entry<String, Object> entry : (Set<Map.Entry<String, Object>>)json.entrySet()) {
-	      json2Xml(sb, entry.getKey(), entry.getValue());
-	    }
-	    sb.append("</").append(key).append(">");
-	    return;
-	  } else {
-	    sb.append("<").append(key).append(">");
-	    sb.append("<![CDATA[");
-	    sb.append(jsonObject.toString());
-	    sb.append("]]>");
-	    sb.append("</").append(key).append(">");
-	    
-	    return;
-	  }
-	}
-	
-}