org.kuali.common.util.spring.PropertiesLoaderFactoryBean Maven / Gradle / Ivy
/**
* Copyright 2010-2013 The Kuali Foundation
*
* Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
*
* 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.kuali.common.util.spring;
import java.util.Properties;
import org.kuali.common.util.Assert;
import org.kuali.common.util.LocationUtils;
import org.kuali.common.util.ModeUtils;
import org.kuali.common.util.PropertyUtils;
import org.kuali.common.util.property.PropertiesContext;
import org.springframework.beans.factory.FactoryBean;
/**
* The improvement over Springs PropertiesFactoryBean is the ability to dynamically resolve placeholders in the property locations themselves.
*/
public class PropertiesLoaderFactoryBean extends PropertiesContext implements FactoryBean {
protected Properties global = PropertyUtils.getGlobalProperties();
boolean singleton = true;
@Override
public Properties getObject() throws Exception {
Assert.notNull(helper, "helper is null");
Assert.notNull(locations, "locations are null");
Assert.notNull(encoding, "encoding is null");
Assert.notNull(missingLocationsMode, "missingLocationsMode is null");
Properties global = PropertyUtils.getGlobalProperties();
this.properties = PropertyUtils.toEmpty(properties);
Properties result = new Properties();
for (String location : locations) {
Properties resolverProperties = PropertyUtils.combine(properties, result, global);
String resolvedLocation = helper.replacePlaceholders(location, resolverProperties);
if (LocationUtils.exists(resolvedLocation)) {
Properties properties = PropertyUtils.load(location, encoding);
result.putAll(properties);
} else {
ModeUtils.validate(missingLocationsMode, "Skipping non-existent location [" + resolvedLocation + "]");
}
}
return result;
}
@Override
public Class getObjectType() {
return Properties.class;
}
@Override
public boolean isSingleton() {
return singleton;
}
public void setSingleton(boolean singleton) {
this.singleton = singleton;
}
}