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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2009 by Red Hat Inc and/or its affiliates or by
* third-party contributors as indicated by either @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.property;
import java.beans.Introspector;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.util.Map;
import org.hibernate.HibernateException;
import org.hibernate.PropertyAccessException;
import org.hibernate.PropertyNotFoundException;
import org.hibernate.PropertySetterAccessException;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.internal.CoreLogging;
import org.hibernate.internal.CoreMessageLogger;
import org.hibernate.internal.util.ReflectHelper;
import org.jboss.logging.Logger;
/**
* Accesses property values via a get/set pair, which may be nonpublic.
* The default (and recommended strategy).
*
* @author Gavin King
*/
public class BasicPropertyAccessor implements PropertyAccessor {
private static final CoreMessageLogger LOG = CoreLogging.messageLogger( BasicPropertyAccessor.class );
public static final class BasicSetter implements Setter {
private Class clazz;
private final transient Method method;
private final String propertyName;
private BasicSetter(Class clazz, Method method, String propertyName) {
this.clazz=clazz;
this.method=method;
this.propertyName=propertyName;
}
@Override
public void set(Object target, Object value, SessionFactoryImplementor factory)
throws HibernateException {
try {
method.invoke( target, value );
}
catch (NullPointerException npe) {
if ( value==null && method.getParameterTypes()[0].isPrimitive() ) {
throw new PropertyAccessException(
npe,
"Null value was assigned to a property of primitive type",
true,
clazz,
propertyName
);
}
else {
throw new PropertyAccessException(
npe,
"NullPointerException occurred while calling",
true,
clazz,
propertyName
);
}
}
catch (InvocationTargetException ite) {
throw new PropertyAccessException(
ite,
"Exception occurred inside",
true,
clazz,
propertyName
);
}
catch (IllegalAccessException iae) {
throw new PropertyAccessException(
iae,
"IllegalAccessException occurred while calling",
true,
clazz,
propertyName
);
//cannot occur
}
catch (IllegalArgumentException iae) {
if ( value==null && method.getParameterTypes()[0].isPrimitive() ) {
throw new PropertyAccessException(
iae,
"Null value was assigned to a property of primitive type",
true,
clazz,
propertyName
);
}
else {
final Class expectedType = method.getParameterTypes()[0];
LOG.illegalPropertySetterArgument( clazz.getName(), propertyName );
LOG.expectedType( expectedType.getName(), value == null ? null : value.getClass().getName() );
throw new PropertySetterAccessException(
iae,
clazz,
propertyName,
expectedType,
target,
value
);
}
}
}
@Override
public Method getMethod() {
return method;
}
@Override
public String getMethodName() {
return method.getName();
}
Object readResolve() {
return createSetter(clazz, propertyName);
}
@Override
public String toString() {
return "BasicSetter(" + clazz.getName() + '.' + propertyName + ')';
}
}
public static final class BasicGetter implements Getter {
private Class clazz;
private final transient Method method;
private final String propertyName;
private BasicGetter(Class clazz, Method method, String propertyName) {
this.clazz=clazz;
this.method=method;
this.propertyName=propertyName;
}
@Override
public Object get(Object target) throws HibernateException {
try {
return method.invoke( target, (Object[]) null );
}
catch (InvocationTargetException ite) {
throw new PropertyAccessException(
ite,
"Exception occurred inside",
false,
clazz,
propertyName
);
}
catch (IllegalAccessException iae) {
throw new PropertyAccessException(
iae,
"IllegalAccessException occurred while calling",
false,
clazz,
propertyName
);
//cannot occur
}
catch (IllegalArgumentException iae) {
LOG.illegalPropertyGetterArgument(clazz.getName(), propertyName);
throw new PropertyAccessException(
iae,
"IllegalArgumentException occurred calling",
false,
clazz,
propertyName
);
}
}
@Override
public Object getForInsert(Object target, Map mergeMap, SessionImplementor session) {
return get( target );
}
@Override
public Class getReturnType() {
return method.getReturnType();
}
@Override
public Member getMember() {
return method;
}
@Override
public Method getMethod() {
return method;
}
@Override
public String getMethodName() {
return method.getName();
}
@Override
public String toString() {
return "BasicGetter(" + clazz.getName() + '.' + propertyName + ')';
}
Object readResolve() {
return createGetter(clazz, propertyName);
}
}
@Override
public Setter getSetter(Class theClass, String propertyName) throws PropertyNotFoundException {
return createSetter(theClass, propertyName);
}
private static Setter createSetter(Class theClass, String propertyName) throws PropertyNotFoundException {
BasicSetter result = getSetterOrNull(theClass, propertyName);
if (result==null) {
throw new PropertyNotFoundException(
"Could not find a setter for property " +
propertyName +
" in class " +
theClass.getName()
);
}
return result;
}
private static BasicSetter getSetterOrNull(Class theClass, String propertyName) {
if (theClass==Object.class || theClass==null) return null;
Method method = setterMethod(theClass, propertyName);
if (method!=null) {
method.setAccessible(true);
return new BasicSetter(theClass, method, propertyName);
}
else {
BasicSetter setter = getSetterOrNull( theClass.getSuperclass(), propertyName );
if (setter==null) {
Class[] interfaces = theClass.getInterfaces();
for ( int i=0; setter==null && i
