| /* |
| * Copyright 2004-2005 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.tiles.xmlDefinition; |
| |
| import org.apache.tiles.NoSuchDefinitionException; |
| |
| import java.util.Map; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| |
| /** |
| * A set of definitions read from XML definitions file. |
| */ |
| public class XmlDefinitionsSet |
| { |
| /** Defined definitions. */ |
| protected Map definitions; |
| |
| /** |
| * Constructor. |
| */ |
| public XmlDefinitionsSet() |
| { |
| definitions = new HashMap(); |
| } |
| |
| /** |
| * Put definition in set. |
| * @param definition Definition to add. |
| */ |
| public void putDefinition(XmlDefinition definition) |
| { |
| definitions.put( definition.getName(), definition ); |
| } |
| |
| /** |
| * Get requested definition. |
| * @param name Definition name. |
| */ |
| public XmlDefinition getDefinition(String name) |
| { |
| return (XmlDefinition)definitions.get( name ); |
| } |
| |
| /** |
| * Get definitions map. |
| */ |
| public Map getDefinitions() |
| { |
| return definitions; |
| } |
| |
| /** |
| * Resolve extended instances. |
| */ |
| public void resolveInheritances() throws NoSuchDefinitionException |
| { |
| // Walk through all definitions and resolve individual inheritance |
| Iterator i = definitions.values().iterator(); |
| while( i.hasNext() ) |
| { |
| XmlDefinition definition = (XmlDefinition)i.next(); |
| definition.resolveInheritance( this ); |
| } // end loop |
| } |
| |
| /** |
| * Add definitions from specified child definitions set. |
| * For each definition in child, look if it already exists in this set. |
| * If not, add it, if yes, overload parent's definition with child definition. |
| * @param child Definition used to overload this object. |
| */ |
| public void extend( XmlDefinitionsSet child ) |
| { |
| if(child==null) |
| return; |
| Iterator i = child.getDefinitions().values().iterator(); |
| while( i.hasNext() ) |
| { |
| XmlDefinition childInstance = (XmlDefinition)i.next(); |
| XmlDefinition parentInstance = getDefinition(childInstance.getName() ); |
| if( parentInstance != null ) |
| { |
| parentInstance.overload( childInstance ); |
| } |
| else |
| putDefinition( childInstance ); |
| } // end loop |
| } |
| /** |
| * Get String representation. |
| */ |
| public String toString() |
| { |
| return "definitions=" + definitions.toString() ; |
| } |
| |
| } |