init code

[vfc/nfvo/wfengine.git] / wso2 / wso2bpel-ext / wso2bpel-core / BPEL4RESTLight / src / main / java / de / unistuttgart / iaas / bpel / extensions / bpel4restlight / util / Bpel4RestLightUtil.java

diff --git a/wso2/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/util/Bpel4RestLightUtil.java b/wso2/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/util/Bpel4RestLightUtil.java
new file mode 100644 (file)
index 0000000..1c9d7d1
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+++ b/wso2/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/util/Bpel4RestLightUtil.java
@@ -0,0 +1,113 @@
+/**
+ * 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;
+       }
+       
+}