/**
* 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.aries.blueprint.ext;
import org.apache.aries.blueprint.ComponentDefinitionRegistry;
import org.apache.aries.blueprint.ExtendedBeanMetadata;
import org.apache.aries.blueprint.ext.AbstractPropertyPlaceholder;
import org.apache.aries.blueprint.mutable.MutableBeanMetadata;
import org.osgi.service.blueprint.container.ComponentDefinitionException;
import org.osgi.service.blueprint.reflect.BeanMetadata;
import org.osgi.service.blueprint.reflect.BeanProperty;
import org.osgi.service.blueprint.reflect.ComponentMetadata;
import org.osgi.service.blueprint.reflect.ValueMetadata;
/**
* Utility for placeholders parsing / validation
*
* @version $Rev: 1201275 $, $Date: 2011-11-12 09:56:14 -0500 (Sat, 12 Nov 2011) $
*/
public class PlaceholdersUtils {
public static void validatePlaceholder(MutableBeanMetadata metadata, ComponentDefinitionRegistry registry) {
String prefix = getPlaceholderProperty(metadata, "placeholderPrefix");
String suffix = getPlaceholderProperty(metadata, "placeholderSuffix");
for (String id : registry.getComponentDefinitionNames()) {
ComponentMetadata component = registry.getComponentDefinition(id);
if (component instanceof ExtendedBeanMetadata) {
ExtendedBeanMetadata bean = (ExtendedBeanMetadata) component;
if (bean.getRuntimeClass() != null && AbstractPropertyPlaceholder.class.isAssignableFrom(bean.getRuntimeClass())) {
String otherPrefix = getPlaceholderProperty(bean, "placeholderPrefix");
String otherSuffix = getPlaceholderProperty(bean, "placeholderSuffix");
if (prefix.equals(otherPrefix) && suffix.equals(otherSuffix)) {
throw new ComponentDefinitionException("Multiple placeholders with the same prefix and suffix are not allowed");
}
}
}
}
}
private static String getPlaceholderProperty(BeanMetadata bean, String name) {
for (BeanProperty property : bean.getProperties()) {
if (name.equals(property.getName())) {
ValueMetadata value = (ValueMetadata) property.getValue();
return value.getStringValue();
}
}
return null;
}
}