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1   /*
2    * Copyright 2006 Outsource Cafe, Inc.
3    *
4    * Licensed under the Apache License, Version 2.0 (the 'License')
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *    http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an 'AS IS' BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.javagen.agile.core.context;
17  
18  import org.javagen.agile.core.model.Model;
19  
20  /***
21   * Builds a context by pushing the nodes on a stack from root to leaf so that leaf
22   * values take precedence.  Also pushes the current model and current models name.
23   * 
24   * @author Richard Easterling
25   */
26  public class DefaultContextLoader implements ContextLoader {
27  
28  	public void pushAll(ContextHolderStack stack, Model modelTree) {
29  		pushModelTreeFromRoot(stack, modelTree);
30  	}
31  	
32  	public void popAll(ContextHolderStack stack, Model modelTree) {
33  		popModelTreeToRoot(stack, modelTree);
34  	}
35  
36  	public static void pushModelTreeFromRoot(ContextHolderStack stack, Model node) {
37  		if (node==null)
38  			return;
39  		pushModelTreeFromRoot(stack, node.getParentModel());
40          node.put(Keys.MODEL.toString(), node);
41          node.put(Keys.MODEL_NAME.toString(), node.getName());
42  		stack.push(node);
43  	}
44  
45      public static void popModelTreeToRoot(ContextHolderStack stack, Model parent) {
46  		while(parent!=null) {
47  			stack.pop();
48  			parent = parent.getParentModel();
49  		}
50  	}
51  
52  }