/**
  * Proxy to {@link OdeRTInstanceContext#initializeVariable(Variable, Node)} then write properties.
  */
 public Node initializeVariable(VariableInstance var, ScopeFrame scopeFrame, Node val)
     throws ExternalVariableModuleException {
   try {
     if (var.declaration.extVar != null) /* external variable */ {
       if (__log.isDebugEnabled())
         __log.debug(
             "Initialize external variable: name="
                 + var.declaration
                 + " value="
                 + DOMUtils.domToString(val));
       Node reference = null;
       try {
         reference = fetchVariableData(var, scopeFrame, true);
       } catch (FaultException fe) {
         // In this context this is not necessarily a problem, since the assignment may re-init the
         // related var
       }
       if (reference != null) val = _brc.readExtVar(var, reference);
       return val;
     } else /* normal variable */ {
       if (__log.isDebugEnabled())
         __log.debug(
             "Initialize variable: name="
                 + var.declaration
                 + " value="
                 + DOMUtils.domToString(val));
       return _brc.initializeVariable(var, val);
     }
   } finally {
     writeProperties(var, val);
   }
 }
 public void commitChanges(VariableInstance var, ScopeFrame scopeFrame, Node value)
     throws ExternalVariableModuleException {
   if (var.declaration.extVar != null) /* external variable */ {
     if (__log.isDebugEnabled())
       __log.debug(
           "Write external variable: name="
               + var.declaration
               + " value="
               + DOMUtils.domToString(value));
     VariableInstance related = scopeFrame.resolve(var.declaration.extVar.related);
     Node reference = null;
     try {
       reference = fetchVariableData(var, scopeFrame, true);
     } catch (FaultException fe) {
       // In this context this is not necessarily a problem, since the assignment may re-init the
       // related var
     }
     VariableContext.ValueReferencePair vrp = _brc.writeExtVar(var, reference, value);
     commitChanges(related, scopeFrame, vrp.reference);
   } else /* normal variable */ {
     if (__log.isDebugEnabled())
       __log.debug(
           "Write variable: name=" + var.declaration + " value=" + DOMUtils.domToString(value));
     _brc.commitChanges(var, value);
   }
   writeProperties(var, value);
 }
 /**
  * Returns a {@link XMLSchemaType}
  *
  * @see javax.wsdl.extensions.ExtensionDeserializer#unmarshall(java.lang.Class,
  *     javax.xml.namespace.QName, org.w3c.dom.Element, javax.wsdl.Definition,
  *     javax.wsdl.extensions.ExtensionRegistry)
  */
 public ExtensibilityElement unmarshall(
     Class clazz,
     QName qname,
     Element element,
     Definition definition,
     ExtensionRegistry extensionRegistry)
     throws WSDLException {
   DOMUtils.pancakeNamespaces(element);
   return new XMLSchemaType(DOMUtils.domToString(element));
 }
Exemple #4
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 /**
  * Get Variable data for the given variable name, for this scope instance
  *
  * @param varName Variable Name
  * @return DOM Node as XML String. If no value exists or variable not initialized, NULL will be
  *     returnrd.
  */
 public String getVariableData(String varName) {
   String value = null;
   try {
     OScope.Variable var = __scope.getVisibleVariable(varName);
     VariableInstance varInstance = new VariableInstance(__scopeInstanceId, var);
     Node varNode = __runtimeContext.fetchVariableData(varInstance, null, false);
     value = DOMUtils.domToString(varNode);
   } catch (Throwable e) {
     // Don't throw any exception back to the caller. Just return null as value.
   }
   return value;
 }
  /**
   * Evaluate expression and return opaque type
   *
   * @param cexp cexp
   * @param ctx ctx
   * @param type type
   * @return type
   * @throws FaultException FaultException
   * @throws EvaluationException EvaluationException
   */
  private Object evaluate(OExpression cexp, EvaluationContext ctx, QName type)
      throws FaultException, EvaluationException {
    try {
      OXQuery10ExpressionBPEL20 oxquery10 = ((OXQuery10ExpressionBPEL20) cexp);

      XQDataSource xqds = new SaxonXQDataSource();
      XQConnection xqconn = xqds.getConnection();

      Configuration configuration = ((SaxonXQConnection) xqconn).getConfiguration();
      configuration.setAllNodesUntyped(true);
      configuration.setHostLanguage(Configuration.XQUERY);

      XQStaticContext staticEnv = xqconn.getStaticContext();

      NSContext nsContext = oxquery10.getNamespaceCtx();
      Set<String> prefixes = nsContext.getPrefixes();
      for (String prefix : prefixes) {
        String uri = nsContext.getNamespaceURI(prefix);
        staticEnv.declareNamespace(prefix, uri);
      }

      configuration.setSchemaValidationMode(Validation.SKIP);
      xqconn.setStaticContext(staticEnv);

      // Prepare expression, for starters
      String xquery =
          oxquery10
              .getXquery()
              .replaceFirst(
                  Constants.XQUERY_FUNCTION_HANDLER_COMPILER,
                  Constants.XQUERY_FUNCTION_HANDLER_RUNTIME);
      XQPreparedExpression exp = xqconn.prepareExpression(xquery);

      JaxpFunctionResolver funcResolver = new JaxpFunctionResolver(ctx, oxquery10);
      JaxpVariableResolver variableResolver =
          new JaxpVariableResolver(ctx, oxquery10, configuration);
      // Bind external variables to runtime values
      for (QName variable : exp.getAllUnboundExternalVariables()) {
        // Evaluate referenced variable
        Object value = variableResolver.resolveVariable(variable);

        if (value instanceof Value) {
          SaxonXQConnection saxonConn = (SaxonXQConnection) xqconn;
          try {
            Item item = ((Value) value).asItem();
            if (item == null) {
              exp.bindSequence(variable, xqconn.createSequence(Collections.EMPTY_LIST.iterator()));
            } else {
              XQItem item2 = new SaxonXQItem(item, saxonConn);
              exp.bindItem(variable, item2);
            }
          } catch (XPathException e) {
            __log.warn("", e);
          }
        } else {

          if (value instanceof Date) {
            Date d = (Date) value;
            value = org.apache.ode.utils.ISO8601DateParser.format(d);
          }

          // Figure out type of variable
          XQSequenceType xqType = getItemType(xqconn, value);

          // Saxon doesn't like binding sequences to variables
          if (value instanceof Node) {
            // a node is a node-list, but the inverse isn't true.
            // so, if the value is truly a node, leave it alone.
          } else if (value instanceof NodeList) {
            // So extract the first item from the node list
            NodeList nodeList = (NodeList) value;
            ArrayList nodeArray = new ArrayList();
            for (int i = 0; i < nodeList.getLength(); i++) {
              nodeArray.add(nodeList.item(i));
            }
            value = xqconn.createSequence(nodeArray.iterator());
          }

          // Bind value with external variable
          if (value != null && xqType != null) {
            if (value instanceof XQSequence) {
              exp.bindSequence(variable, (XQSequence) value);
            } else {
              if (xqType instanceof XQItemType) {
                exp.bindObject(variable, value, (XQItemType) xqType);
              }
            }
          }
        }
      }

      // Set context node
      Node contextNode = (ctx.getRootNode() == null) ? DOMUtils.newDocument() : ctx.getRootNode();
      contextNode.setUserData(
          XQuery10BpelFunctions.USER_DATA_KEY_FUNCTION_RESOLVER, funcResolver, null);
      exp.bindItem(
          XQConstants.CONTEXT_ITEM,
          xqconn.createItemFromNode(contextNode, xqconn.createNodeType()));

      // Execute query
      XQResultSequence result = exp.executeQuery();

      // Cast Saxon result to Java result
      Object evalResult = getResultValue(type, result);

      if ((evalResult != null) && __log.isDebugEnabled()) {
        __log.debug(
            "Expression "
                + cexp.toString()
                + " generated result "
                + evalResult
                + " - type="
                + evalResult.getClass().getName());

        if (ctx.getRootNode() != null) {
          __log.debug("Was using context node " + DOMUtils.domToString(ctx.getRootNode()));
        }
      }

      return evalResult;
    } catch (XQException xqe) {
      // Extracting the real cause from all this wrapping isn't a simple task
      Throwable cause = (xqe.getCause() != null) ? xqe.getCause() : xqe;

      if (cause instanceof DynamicError) {
        Throwable th = ((DynamicError) cause).getException();

        if (th != null) {
          cause = th;

          if (cause.getCause() != null) {
            cause = cause.getCause();
          }
        }
      }

      throw new EvaluationException(
          "Error while executing an XQuery expression: " + cause.toString(), cause);
    } catch (WrappedResolverException wre) {
      __log.debug("Could not evaluate expression because of ", wre);
      throw (FaultException) wre.getCause();
    }
  }