/*
    * Copyright (C) 2007-2012 Argeo GmbH
    *
    * 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.argeo.slc.core.execution.tasks;
  
  import org.argeo.slc.SlcException;
  import org.argeo.slc.core.test.context.SimpleContextAware;
  import org.argeo.slc.test.context.ContextAware;
  
  /**
   * Overrides Values and Expected values of a target 
   * <code>SimpleContextAware</code> with the corresponding
   * values and expected values of a source <code>ContextAware</code>
   *
   */
  public class OverrideContextAware implements Runnable {
  
  	private ContextAware source;
  
  	private SimpleContextAware target;
  	
  	/**
  	 * Whether an exception shall be thrown if a value
  	 * or expected value of the source is not defined
  	 * in the target
  	 */
  	private Boolean failIfUndefinedInSource = true;
  	
  	public void run() {
  		// override values
  		if(source.getValues() != null)
  			for(String key : source.getValues().keySet()) {
  				if(failIfUndefinedInSource && !target.getValues().containsKey(key)) {
  					throw new SlcException("No entry in target values for key '" + key + "'");
  				}
  				target.getValues().put(key, source.getValues().get(key));
  			}
  		
  		// override expected values
  		if(source.getExpectedValues() != null)
  			for(String key : source.getExpectedValues().keySet()) {
  				if(failIfUndefinedInSource && !target.getExpectedValues().containsKey(key)) {
  					throw new SlcException("No entry in target expected values for key '" + key + "'");
  				}
  				target.getExpectedValues().put(key, source.getExpectedValues().get(key));
  			}		
  	}	
  	
  	public void setSource(ContextAware source) {
  		this.source = source;
  	}
  
  	public void setTarget(SimpleContextAware target) {
  		this.target = target;
  	}
  
  	public void setFailIfUndefinedInSource(Boolean failIfUndefinedInSource) {
  		this.failIfUndefinedInSource = failIfUndefinedInSource;
  	}	
  }