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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.metamodel.internal;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import javax.persistence.metamodel.Attribute;
import javax.persistence.metamodel.ManagedType;
import org.hibernate.internal.util.ReflectHelper;
/**
* Models the commonality of the JPA {@link Attribute} hierarchy.
*
* @author Steve Ebersole
*/
public abstract class AbstractAttribute
implements Attribute, AttributeImplementor, Serializable {
private final String name;
private final Class javaType;
private final AbstractManagedType declaringType;
private transient Member member;
private final PersistentAttributeType persistentAttributeType;
public AbstractAttribute(
String name,
Class javaType,
AbstractManagedType declaringType,
Member member,
PersistentAttributeType persistentAttributeType) {
this.name = name;
this.javaType = javaType;
this.declaringType = declaringType;
this.member = member;
this.persistentAttributeType = persistentAttributeType;
}
@Override
public String getName() {
return name;
}
@Override
public ManagedType getDeclaringType() {
return declaringType;
}
@Override
public Class getJavaType() {
return javaType;
}
@Override
public Member getJavaMember() {
return member;
}
@Override
public PersistentAttributeType getPersistentAttributeType() {
return persistentAttributeType;
}
/**
* Used by JDK serialization...
*
* @param ois The input stream from which we are being read...
* @throws java.io.IOException Indicates a general IO stream exception
* @throws ClassNotFoundException Indicates a class resolution issue
*/
protected void readObject(ObjectInputStream ois) throws IOException, ClassNotFoundException {
ois.defaultReadObject();
final String memberDeclaringClassName = ( String ) ois.readObject();
final String memberName = ( String ) ois.readObject();
final String memberType = ( String ) ois.readObject();
final Class memberDeclaringClass = Class.forName(
memberDeclaringClassName,
false,
declaringType.getJavaType().getClassLoader()
);
try {
this.member = "method".equals( memberType )
? memberDeclaringClass.getMethod( memberName, ReflectHelper.NO_PARAM_SIGNATURE )
: memberDeclaringClass.getField( memberName );
}
catch ( Exception e ) {
throw new IllegalStateException(
"Unable to locate member [" + memberDeclaringClassName + "#"
+ memberName + "]"
);
}
}
/**
* Used by JDK serialization...
*
* @param oos The output stream to which we are being written...
* @throws IOException Indicates a general IO stream exception
*/
protected void writeObject(ObjectOutputStream oos) throws IOException {
oos.defaultWriteObject();
oos.writeObject( getJavaMember().getDeclaringClass().getName() );
oos.writeObject( getJavaMember().getName() );
// should only ever be a field or the getter-method...
oos.writeObject( Method.class.isInstance( getJavaMember() ) ? "method" : "field" );
}
}