| 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.HashMap; |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| |
| /** |
| * $Id$ |
| */ |
| class ASTMap |
| extends SimpleNode |
| { |
| private String className; |
| |
| private final Map<OgnlContext, Class> defaultMapClassMap = new HashMap<OgnlContext, Class>(); |
| |
| public ASTMap( int id ) |
| { |
| super( id ); |
| } |
| |
| public ASTMap( OgnlParser p, int id ) |
| { |
| super( p, id ); |
| } |
| |
| protected void setClassName( String value ) |
| { |
| className = value; |
| } |
| |
| /** |
| * Get the class name for this map. |
| * |
| * @return the class name. |
| * @since 4.0 |
| */ |
| String getClassName() |
| { |
| return className; |
| } |
| |
| protected Object getValueBody( OgnlContext context, Object source ) |
| throws OgnlException |
| { |
| Map answer; |
| |
| if ( className == null ) |
| { |
| Class defaultMapClass = getDefaultMapClass( context ); |
| try |
| { |
| answer = (Map) defaultMapClass.newInstance(); |
| } |
| catch ( Exception ex ) |
| { |
| /* This should never happen */ |
| throw new OgnlException( "Default Map class '" + defaultMapClass.getName() + "' instantiation error", |
| ex ); |
| } |
| } |
| else |
| { |
| try |
| { |
| answer = (Map) OgnlRuntime.classForName( context, className ).newInstance(); |
| } |
| catch ( Exception ex ) |
| { |
| throw new OgnlException( "Map implementor '" + className + "' not found", ex ); |
| } |
| } |
| |
| for ( int i = 0; i < jjtGetNumChildren(); ++i ) |
| { |
| ASTKeyValue kv = (ASTKeyValue) children[i]; |
| Node k = kv.getKey(), v = kv.getValue(); |
| |
| answer.put( k.getValue( context, source ), ( v == null ) ? null : v.getValue( context, source ) ); |
| } |
| |
| return answer; |
| } |
| |
| public String toGetSourceString( OgnlContext context, Object target ) |
| { |
| throw new UnsupportedCompilationException( "Map expressions not supported as native java yet." ); |
| } |
| |
| public String toSetSourceString( OgnlContext context, Object target ) |
| { |
| throw new UnsupportedCompilationException( "Map 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 ); |
| } |
| |
| private Class getDefaultMapClass( OgnlContext context ) |
| { |
| Class defaultMapClass = defaultMapClassMap.get( context ); |
| if ( defaultMapClass != null ) |
| { |
| return defaultMapClass; |
| } |
| |
| defaultMapClass = LinkedHashMap.class; |
| |
| defaultMapClassMap.put( context, defaultMapClass ); |
| return defaultMapClass; |
| } |
| } |