package org.apache.commons.ognl;

 /*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you 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.

  */

 import org.apache.commons.ognl.enhance.UnsupportedCompilationException;

 import java.util.ArrayList;

 import java.util.Enumeration;

 import java.util.List;

 /**

  * $Id: ASTProject.java 1194869 2011-10-29 11:10:16Z mcucchiara $

  * @author Luke Blanshard (blanshlu@netscape.net)

  * @author Drew Davidson (drew@ognl.org)

  */

 class ASTProject

     extends SimpleNode

 {

     public ASTProject( int id )

     {

         super( id );

     }

     public ASTProject( OgnlParser p, int id )

     {

         super( p, id );

     }

     protected Object getValueBody( OgnlContext context, Object source )

         throws OgnlException

     {

         Node expr = children[0];

         List answer = new ArrayList();

         ElementsAccessor elementsAccessor = OgnlRuntime.getElementsAccessor( OgnlRuntime.getTargetClass( source ) );

         for ( Enumeration e = elementsAccessor.getElements( source ); e.hasMoreElements(); )

         {

             answer.add( expr.getValue( context, e.nextElement() ) );

         }

         return answer;

     }

     public String toGetSourceString( OgnlContext context, Object target )

     {

         throw new UnsupportedCompilationException( "Projection expressions not supported as native java yet." );

     }

     public String toSetSourceString( OgnlContext context, Object target )

     {

         throw new UnsupportedCompilationException( "Projection expressions not supported as native java yet." );

     }

     public <R, P> R accept( NodeVisitor<? extends R, ? super P> visitor, P data )

         throws OgnlException

     {

         return visitor.visit( this, data );

     }

 }