org.hibernate.validator.internal.util.classhierarchy.Filters Maven / Gradle / Ivy
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* Copyright 2013, Red Hat, Inc. and/or its affiliates, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* Licensed 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.hibernate.validator.internal.util.classhierarchy;
/**
* Provides filters to be used when invoking
* {@link ClassHierarchyHelper#getHierarchy(Class, Filter...)}.
*
* @author Gunnar Morling
*/
public class Filters {
private static final Filter PROXY_FILTER = new WeldProxyFilter();
private static final Filter INTERFACES_FILTER = new InterfacesFilter();
/**
* Returns a filter which excludes interfaces.
*
* @return a filter which excludes interfaces
*/
public static Filter excludeInterfaces() {
return INTERFACES_FILTER;
}
/**
* Returns a filter which excludes proxy objects.
*
* @return a filter which excludes proxy objects
*/
public static Filter excludeProxies() {
return PROXY_FILTER;
}
private static class InterfacesFilter implements Filter {
@Override
public boolean accepts(Class clazz) {
return !clazz.isInterface();
}
}
private static class WeldProxyFilter implements Filter {
private static final String WELD_PROXY_INTERFACE_NAME = "org.jboss.weld.bean.proxy.ProxyObject";
@Override
public boolean accepts(Class clazz) {
return !isWeldProxy( clazz );
}
/**
* Whether the given class is a proxy created by Weld or not. This is
* the case if the given class implements the interface
* {@code org.jboss.weld.bean.proxy.ProxyObject}.
*
* @param clazz the class of interest
*
* @return {@code true} if the given class is a Weld proxy,
* {@code false} otherwise
*/
private boolean isWeldProxy(Class clazz) {
for ( Class implementedInterface : clazz.getInterfaces() ) {
if ( implementedInterface.getName().equals( WELD_PROXY_INTERFACE_NAME ) ) {
return true;
}
}
return false;
}
}
}