    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}