Hibernate example source code file (ReflectionTools.java)

This example Hibernate source code file (ReflectionTools.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Hibernate tags/keywords

classnotfoundexception, concurrentreferencehashmap, getter, getter, map, pair, propertyaccessor, propertydata, propertydata, reflectiontools, setter, setter, string, string, util

The Hibernate ReflectionTools.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008, Red Hat Middleware LLC 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 Middleware LLC.
 *
 * 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.tools.reflection;
import static org.hibernate.envers.tools.Pair.make;
import java.util.Map;
import org.hibernate.envers.entities.PropertyData;
import org.hibernate.envers.exception.AuditException;
import org.hibernate.envers.tools.ConcurrentReferenceHashMap;
import org.hibernate.envers.tools.Pair;
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)
 */
public class ReflectionTools {
    private static final Map<Pair getterCache =
            new ConcurrentReferenceHashMap<Pair(10,
                ConcurrentReferenceHashMap.ReferenceType.SOFT,
                ConcurrentReferenceHashMap.ReferenceType.SOFT);
    private static final Map<Pair setterCache =
            new ConcurrentReferenceHashMap<Pair(10,
                ConcurrentReferenceHashMap.ReferenceType.SOFT,
                ConcurrentReferenceHashMap.ReferenceType.SOFT);

    public static Class<?> loadClass(String name) {
        try {
            return Thread.currentThread().getContextClassLoader().loadClass(name);
        } catch (ClassNotFoundException e) {
            throw new AuditException(e);
        }
    }

    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) {
        Pair<Class, String> key = make(cls, propertyName);
        Getter value = getterCache.get(key);
        if (value == null) {
            value = getAccessor(accessorType).getGetter(cls, propertyName);
            // It's ok if two getters are generated concurrently
            getterCache.put(key, value);
        }

        return value;
    }

    public static Setter getSetter(Class cls, PropertyData propertyData) {
        return getSetter(cls, propertyData.getBeanName(), propertyData.getAccessType());
    }

    private static Setter getSetter(Class cls, String propertyName, String accessorType) {
        Pair<Class, String> key = make(cls, propertyName);
        Setter value = setterCache.get(key);
        if (value == null) {
            value = getAccessor(accessorType).getSetter(cls, propertyName);
            // It's ok if two setters are generated concurrently
            setterCache.put(key, value);
        }

        return value;
    }
}