wso2/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/util/Bpel4RestLightUtil.java

   1 /**
   2  * Copyright 2011 IAAS University of Stuttgart <br>
   3  * <br>
   4  *
   5  * @author uwe.breitenbuecher@iaas.uni-stuttgart.de
   6  *
   7  */
   8 package de.unistuttgart.iaas.bpel.extensions.bpel4restlight.util;
   9
  10 import org.apache.commons.logging.Log;
  11 import org.apache.commons.logging.LogFactory;
  12 import org.apache.ode.bpel.common.FaultException;
  13 import org.apache.ode.bpel.runtime.extension.ExtensionContext;
  14 import org.w3c.dom.Element;
  15 import org.w3c.dom.Node;
  16
  17 import de.unistuttgart.iaas.bpel.extensions.bpel4restlight.Bpel4RestLightOperation;
  18 import de.unistuttgart.iaas.bpel.extensions.bpel4restlight.MethodAttribute;
  19 import de.unistuttgart.iaas.xml.DomXmlConverter;
  20
  21
  22 public class Bpel4RestLightUtil {
  23   protected static final Log log = LogFactory.getLog(Bpel4RestLightUtil.class);
  24         /**
  25          * This function extracts the requestPayload specified in the passed
  26          * element. This requestPayload is either the content contained in a special
  27          * BPEL-Variable which is referenced by name by a special attribute of the
  28          * passed element or the content contained in the first child node of the
  29          * passed element
  30          *
  31          * @param context ExtensionContext
  32          * @param element Element from which the requestPayload has to be extracted
  33          * @return RequestPayload as String
  34          * @throws FaultException
  35          */
  36         public static String extractRequestPayload(ExtensionContext context, Element element) throws FaultException {
  37
  38                 String requestPayload = "";
  39
  40                 String requestPayloadVariableName = getMethodAttributeValue(element, MethodAttribute.REQUESTPAYLOADVARIABLE);
  41
  42                 if (requestPayloadVariableName != null && requestPayloadVariableName != "") {
  43                         Node requestVariableNode = context.readVariable(requestPayloadVariableName);
  44                         if (requestVariableNode.getLocalName().equals("temporary-simple-type-wrapper")) {
  45                                 Bpel4RestLightOperation.wrapper = "temporary-simple-type-wrapper";
  46                                 requestPayload = DomXmlConverter.nodeToString(requestVariableNode, "temporary-simple-type-wrapper");
  47                         } else {
  48                                 requestPayload = DomXmlConverter.nodeToString(requestVariableNode, null);
  49                         }
  50                         log.debug("The pure request variable as String: \n" + DomXmlConverter.nodeToString(requestVariableNode, null) + "\n");
  51                 }
  52
  53                 return requestPayload;
  54         }
  55
  56         public static String extractAcceptHeader(ExtensionContext context, Element element) throws FaultException {
  57                 return getMethodAttributeValue(element, MethodAttribute.ACCEPTHEADER);
  58         }
  59
  60         public static String extractContentTypeHeader(ExtensionContext context, Element element) throws FaultException {
  61       return getMethodAttributeValue(element, MethodAttribute.CONTENTTYPE);
  62   }
  63
  64         /**
  65          * This function extracts special predefined attributes (see
  66          * {@link MethodAttribute}) from a passed DOM-Element
  67          *
  68          * @param element Element containing the requested Attribute-Value
  69          * @param methodAttribute Attribute whose content has to be returned
  70          * @return Value / Content of the attribute
  71          */
  72         public static String getMethodAttributeValue(Element element, MethodAttribute methodAttribute) {
  73
  74                 String result = "";
  75
  76                 switch (methodAttribute) {
  77
  78                         case REQUESTURI:
  79                                 result = element.getAttribute("uri");
  80
  81                                 if (result == null || "".equals(result)) {
  82                                         result = element.getAttribute("requestUri");
  83                                 }
  84                                 break;
  85                         case REQUESTPAYLOADVARIABLE:
  86                                 result = element.getAttribute("request");
  87
  88                                 if (result == null || "".equals(result)) {
  89                                         result = element.getAttribute("requestPayload");
  90                                 }
  91                                 break;
  92                         case RESPONSEPAYLOADVARIABLE:
  93                                 result = element.getAttribute("response");
  94
  95                                 if (result == null || "".equals(result)) {
  96                                         result = element.getAttribute("responsePayload");
  97                                 }
  98                                 break;
  99                         case STATUSCODEVARIABLE:
 100                                 result = element.getAttribute("statusCode");
 101                                 break;
 102                         case ACCEPTHEADER:
 103                                 result = element.getAttribute("accept");
 104                                 break;
 105                         case CONTENTTYPE:
 106                           result = element.getAttribute("contentType");
 107                           break;
 108                 }
 109
 110                 return result;
 111         }
 112
 113 }