001// Copyright 2010 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007// http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014package org.apache.tapestry5.internal.spring;
015
016import java.util.Properties;
017
018import org.apache.tapestry5.ioc.services.SymbolSource;
019import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;
020
021public class SymbolBeanFactoryPostProcessor extends PropertyPlaceholderConfigurer
022{
023    
024    private SymbolSource symbolSource;
025
026    public SymbolBeanFactoryPostProcessor(SymbolSource symbolSource)
027    {
028        super();
029        this.symbolSource = symbolSource;
030        setIgnoreUnresolvablePlaceholders(true);
031    }
032
033    @Override
034    protected String resolvePlaceholder(String placeholder, Properties props)
035    {
036        try
037        {
038            return symbolSource.valueForSymbol(placeholder);
039        }
040        catch(RuntimeException e)
041        {
042             return super.resolvePlaceholder(placeholder, props);
043        }
044    }
045
046}