chainedbeancreator.java

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/*
 * Copyright 2001-2004 The Apache Software Foundation.
 * 
 * Licensed 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.
 */ 
package org.apache.commons.betwixt.io.read;

/**  
  * Creator of beans that may delegate responsibility to members down the chain.
  *
  * @author Robert Burrell Donkin
  * @since 0.5
  */
public interface ChainedBeanCreator {
    
    /**
      * Creates a bean either directly or by delegating the responsibility to the other
      * members of the chain.
      *
      * @param elementMapping  specifies the mapping between the type and element.
      * <strong>Note</strong> it is recommended that classes do not store a permenant
      * reference to this object since these objects may later be reused.
      * Not null
      * @param context the context in which this converision happens, not null
      * @param chain not null
      * @return the Object created, possibly null
      */
    
    // TODO: is element mapping really necessary here?
    // TODO: what about exception handling? 
    public Object create(
                            ElementMapping elementMapping, 
                            ReadContext context, 
                            BeanCreationChain chain);
    
}