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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2013, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.envers.internal.tools;
import java.util.Map;
import org.hibernate.annotations.common.reflection.XClass;
import org.hibernate.annotations.common.reflection.XProperty;
import org.hibernate.boot.registry.classloading.spi.ClassLoaderService;
import org.hibernate.boot.registry.classloading.spi.ClassLoadingException;
import org.hibernate.cfg.Configuration;
import org.hibernate.envers.configuration.spi.AuditConfiguration;
import org.hibernate.envers.internal.entities.PropertyData;
import org.hibernate.envers.tools.Pair;
import org.hibernate.internal.util.collections.ConcurrentReferenceHashMap;
import org.hibernate.property.Getter;
import org.hibernate.property.PropertyAccessor;
import org.hibernate.property.PropertyAccessorFactory;
import org.hibernate.property.Setter;
/**
* @author Adam Warski (adam at warski dot org)
* @author Lukasz Antoniak (lukasz dot antoniak at gmail dot com)
*/
public abstract class ReflectionTools {
private static final Map, Getter> GETTER_CACHE = new ConcurrentReferenceHashMap, Getter>(
10,
ConcurrentReferenceHashMap.ReferenceType.SOFT,
ConcurrentReferenceHashMap.ReferenceType.SOFT
);
private static final Map, Setter> SETTER_CACHE = new ConcurrentReferenceHashMap, Setter>(
10,
ConcurrentReferenceHashMap.ReferenceType.SOFT,
ConcurrentReferenceHashMap.ReferenceType.SOFT
);
private static PropertyAccessor getAccessor(String accessorType) {
return PropertyAccessorFactory.getPropertyAccessor( accessorType );
}
public static Getter getGetter(Class cls, PropertyData propertyData) {
return getGetter( cls, propertyData.getBeanName(), propertyData.getAccessType() );
}
public static Getter getGetter(Class cls, String propertyName, String accessorType) {
final Pair key = Pair.make( cls, propertyName );
Getter value = GETTER_CACHE.get( key );
if ( value == null ) {
value = getAccessor( accessorType ).getGetter( cls, propertyName );
// It's ok if two getters are generated concurrently
GETTER_CACHE.put( key, value );
}
return value;
}
public static Setter getSetter(Class cls, PropertyData propertyData) {
return getSetter( cls, propertyData.getBeanName(), propertyData.getAccessType() );
}
public static Setter getSetter(Class cls, String propertyName, String accessorType) {
final Pair key = Pair.make( cls, propertyName );
Setter value = SETTER_CACHE.get( key );
if ( value == null ) {
value = getAccessor( accessorType ).getSetter( cls, propertyName );
// It's ok if two setters are generated concurrently
SETTER_CACHE.put( key, value );
}
return value;
}
/**
* @param clazz Source class.
* @param propertyName Property name.
*
* @return Property object or {@code null} if none with expected name has been found.
*/
public static XProperty getProperty(XClass clazz, String propertyName) {
XProperty property = getProperty( clazz, propertyName, "field" );
if ( property == null ) {
property = getProperty( clazz, propertyName, "property" );
}
return property;
}
/**
* @param clazz Source class.
* @param propertyName Property name.
* @param accessType Expected access type. Legal values are field and property.
*
* @return Property object or {@code null} if none with expected name and access type has been found.
*/
public static XProperty getProperty(XClass clazz, String propertyName, String accessType) {
for ( XProperty property : clazz.getDeclaredProperties( accessType ) ) {
if ( propertyName.equals( property.getName() ) ) {
return property;
}
}
return null;
}
/**
* Locate class with a given name.
*
* @param name Fully qualified class name.
* @param classLoaderService Class loading service. Passing {@code null} reference
* in case of {@link AuditConfiguration#getFor(Configuration)} usage.
*
* @return The cass reference.
*
* @throws ClassLoadingException Indicates the class could not be found.
*/
@SuppressWarnings("unchecked")
public static Class loadClass(String name, ClassLoaderService classLoaderService)
throws ClassLoadingException {
try {
if ( classLoaderService != null ) {
return classLoaderService.classForName( name );
}
else {
return (Class) Thread.currentThread().getContextClassLoader().loadClass( name );
}
}
catch (Exception e) {
throw new ClassLoadingException( "Unable to load class [" + name + "]", e );
}
}
}