org.eclipse.persistence.internal.jaxb.CustomAccessorAttributeAccessor Maven / Gradle / Ivy
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/*
* Copyright (c) 2012, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// Matt MacIvor - 2.4 - Initial Implementation
package org.eclipse.persistence.internal.jaxb;
import java.lang.reflect.Method;
import org.eclipse.persistence.exceptions.DescriptorException;
import org.eclipse.persistence.exceptions.JAXBException;
import org.eclipse.persistence.internal.security.PrivilegedAccessHelper;
import org.eclipse.persistence.mappings.AttributeAccessor;
/**
*
* Purpose: Provides a wrapper around an instance of Accessor. Makes reflective
* calls to the nested accessor's get and set methods. The nested accessor can
* come from either the internal or public package.
*
* @author mmacivor
* @since EclipseLink 2.4
*/
public class CustomAccessorAttributeAccessor extends AttributeAccessor {
private Object accessor;
private transient Method getMethod;
private transient Method setMethod;
public CustomAccessorAttributeAccessor(Object accessor) {
this.accessor = accessor;
Class[] getMethodParams = new Class[]{Object.class};
Class[] setMethodParams = new Class[]{Object.class, Object.class};
try {
getMethod = PrivilegedAccessHelper.getDeclaredMethod(accessor.getClass(), "get", getMethodParams);
setMethod = PrivilegedAccessHelper.getDeclaredMethod(accessor.getClass(), "set", setMethodParams);
} catch(Exception ex) {
}
}
@Override
public Object getAttributeValueFromObject(Object object) throws DescriptorException {
try {
return PrivilegedAccessHelper.invokeMethod(getMethod, accessor, new Object[]{object});
} catch(Exception ex) {
throw JAXBException.errorInvokingAccessor(this.accessor, "get", ex);
}
}
@Override
public void setAttributeValueInObject(Object object, Object value) throws DescriptorException {
try {
PrivilegedAccessHelper.invokeMethod(setMethod, accessor, new Object[]{object, value});
} catch(Exception ex) {
throw JAXBException.errorInvokingAccessor(this.accessor, "set", ex);
}
}
}