/**
* 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.
*/
package org.apache.geronimo.activemq;
import java.util.Properties;
import org.apache.commons.jexl.Expression;
import org.apache.commons.jexl.ExpressionFactory;
import org.apache.commons.jexl.JexlContext;
import org.apache.commons.jexl.JexlHelper;
import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;
/**
* Samples: 1. ${a}
* 2. ${a${a}}
* 3. ${${a} + 10}
*/
public class GeronimoPropertyPlaceholderConfigurer extends PropertyPlaceholderConfigurer {
@Override
protected String resolveSystemProperty(String placeholder) {
String sPropertyValue = super.resolveSystemProperty(placeholder);
if (sPropertyValue == null) {
sPropertyValue = parseSystemProperty(placeholder);
//TODO No way to get the SearchSystemEnvironment property
if (sPropertyValue == null)
sPropertyValue = parseEnvProperty(placeholder);
}
return sPropertyValue;
}
@Override
protected String resolvePlaceholder(String placeholder, Properties props) {
String sPropertyValue = super.resolvePlaceholder(placeholder, props);
if (sPropertyValue == null) {
try {
Expression expression = ExpressionFactory.createExpression(placeholder);
JexlContext jexlContext = JexlHelper.createContext();
jexlContext.setVars(props);
sPropertyValue = expression.evaluate(jexlContext).toString();
} catch (Throwable t) {
}
}
return sPropertyValue;
}
private String parseSystemProperty(String placeholder) {
try {
Expression expression = ExpressionFactory.createExpression(placeholder);
JexlContext jexlContext = JexlHelper.createContext();
jexlContext.setVars(System.getProperties());
return expression.evaluate(jexlContext).toString();
} catch (Throwable t) {
return null;
}
}
private String parseEnvProperty(String placeholder) {
try {
Expression expression = ExpressionFactory.createExpression(placeholder);
JexlContext jexlContext = JexlHelper.createContext();
jexlContext.setVars(System.getenv());
return expression.evaluate(jexlContext).toString();
} catch (Throwable t) {
return null;
}
}
}