cvs commit: xml-cocoon2/src/scratchpad/schecoon/src/org/apache/cocoon/components/treeprocessor/sitemap CallFunctionNode.java

[ovidiu]

ovidiu      02/03/13 11:03:59

  Added:       
src/scratchpad/schecoon/src/org/apache/cocoon/components/treeprocessor/sitemap
                        CallFunctionNode.java
  Log:
  Node handler for calling functions in the flow control layer.
  
  Revision  Changes    Path
  1.1                  
xml-cocoon2/src/scratchpad/schecoon/src/org/apache/cocoon/components/treeprocessor/sitemap/CallFunctionNode.java
  
  Index: CallFunctionNode.java
  ===================================================================
  package org.apache.cocoon.components.treeprocessor.sitemap;
  
  import org.apache.avalon.framework.activity.Initializable;
  
  import org.apache.cocoon.environment.Environment;
  
  import org.apache.cocoon.sitemap.PatternException;
  
  import org.apache.cocoon.components.treeprocessor.AbstractProcessingNode;
  import org.apache.cocoon.components.treeprocessor.CategoryNode;
  import org.apache.cocoon.components.treeprocessor.InvokeContext;
  import org.apache.cocoon.components.treeprocessor.MapStackResolver;
  import org.apache.cocoon.components.treeprocessor.ParameterizableProcessingNode;
  import org.apache.cocoon.components.treeprocessor.ProcessingNode;
  
  import java.util.List;
  import java.util.Map;
  
  public class CallFunctionNode extends AbstractProcessingNode
      implements Initializable, ParameterizableProcessingNode
  {
    protected Map parameters;
    protected String functionName;
    protected MapStackResolver resourceResolver;
  
    public CallFunctionNode(String funName)
    {
      functionName = funName;
    }
  
    public void setParameters(Map params)
    {
      parameters = params;
      System.out.println("CallFunctionNode: params = " + params);
    }
  
    public void initialize()
      throws Exception
    {
      if (MapStackResolver.needsResolve(functionName)) {
        // Will always be resolved at invoke time
        this.resourceResolver = MapStackResolver.getResolver(functionName);
      }
    }
  
    public boolean invoke(Environment env, InvokeContext context)
        throws Exception
    {
      Map params = parameters;
  
      // Resolve parameters
      if (this.parameters != null) {
        params = MapStackResolver.resolveMap(this.parameters,
                                             context.getMapStack());
      }
  
      String name = functionName;
  
      if (resourceResolver != null) {
        // Need to resolve the function name at runtime
        name = resourceResolver.resolve(context.getMapStack());
  
        if (getLogger().isInfoEnabled()) {
          getLogger().info("Calling function " + name);
        }
      }
  
      System.out.println("CallFunctionNode: invoking " + name
                         + ", params = " + params);
      return true;
    }
  }
  
  
  

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