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* Licensed to the Apache Software Foundation (ASF) under one *
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* 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 *
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package org.apache.james.container.spring.lifecycle;
import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.HierarchicalConfiguration;
import org.apache.commons.configuration.XMLConfiguration;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.ResourceLoaderAware;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
/**
* Load Configuration and act as provider
*
*
*/
public class SpringConfigurationProvider implements ConfigurationProvider, ResourceLoaderAware, InitializingBean {
private ResourceLoader loader;
private Map<String,HierarchicalConfiguration> confMap = new HashMap<String,HierarchicalConfiguration>();
private Map<String,String> resources;
/**
* Return the configuration prefix to load the config. In this case its
* file://conf/
*
* @return prefix
*/
protected String getConfigPrefix() {
return "file://conf/";
}
/*
* (non-Javadoc)
* @see org.springframework.context.ResourceLoaderAware#setResourceLoader(org.springframework.core.io.ResourceLoader)
*/
public void setResourceLoader(ResourceLoader loader) {
this.loader = loader;
}
private XMLConfiguration getConfig(Resource r) throws ConfigurationException, IOException {
XMLConfiguration config = new XMLConfiguration();
config.setDelimiterParsingDisabled(true);
// Use InputStream so we are not bound to File implementations of the config
config.load(r.getInputStream());
return config;
}
public void setConfigurationMappings(Map<String,String> resources) {
this.resources = resources;
}
/*
* (non-Javadoc)
* @see org.apache.james.container.spring.Registry#registerForComponent(java.lang.String, java.lang.Object)
*/
public void registerForComponent(String name, HierarchicalConfiguration conf) {
confMap.put(name, conf);
}
/*
*
*/
public void afterPropertiesSet() throws Exception {
if (resources != null) {
Iterator<String> it = resources.keySet().iterator();
while (it.hasNext()) {
String key = it.next();
String value = resources.get(key);
confMap.put(key,getConfiguration(value));
}
}
}
public HierarchicalConfiguration getConfiguration(String name) throws ConfigurationException {
HierarchicalConfiguration conf = confMap.get(name);
if (conf != null) {
return conf;
} else {
Resource r = loader.getResource(getConfigPrefix()+ name + ".xml");
if (r.exists()) {
try {
return getConfig(r);
} catch (Exception e) {
throw new ConfigurationException("Unable to load configuration for component " + name, e);
}
}
}
throw new ConfigurationException("Unable to load configuration for component " + name);
}
}