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The core O/RM functionality as provided by Hibernate
/*
* 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.type;
import java.io.Serializable;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Map;
import java.util.Objects;
import org.hibernate.HibernateException;
import org.hibernate.engine.jdbc.Size;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.engine.spi.SharedSessionContractImplementor;
/**
* Abstract superclass of the built in Type hierarchy.
*
* @author Gavin King
*/
public abstract class AbstractType implements Type {
protected static final Size LEGACY_DICTATED_SIZE = new Size();
protected static final Size LEGACY_DEFAULT_SIZE = new Size( 19, 2, 255, Size.LobMultiplier.NONE ); // to match legacy behavior
@Override
public boolean isAssociationType() {
return false;
}
@Override
public boolean isCollectionType() {
return false;
}
@Override
public boolean isComponentType() {
return false;
}
@Override
public boolean isEntityType() {
return false;
}
@Override
public int compare(Object x, Object y) {
return ( (Comparable) x ).compareTo(y);
}
@Override
public Serializable disassemble(Object value, SharedSessionContractImplementor session, Object owner)
throws HibernateException {
if (value==null) {
return null;
}
else {
return (Serializable) deepCopy( value, session.getFactory() );
}
}
@Override
public Object assemble(Serializable cached, SharedSessionContractImplementor session, Object owner)
throws HibernateException {
if ( cached==null ) {
return null;
}
else {
return deepCopy( cached, session.getFactory() );
}
}
@Override
public boolean isDirty(Object old, Object current, SharedSessionContractImplementor session) throws HibernateException {
return !isSame( old, current );
}
@Override
public Object hydrate(
ResultSet rs,
String[] names,
SharedSessionContractImplementor session,
Object owner)
throws HibernateException, SQLException {
// TODO: this is very suboptimal for some subclasses (namely components),
// since it does not take advantage of two-phase-load
return nullSafeGet(rs, names, session, owner);
}
@Override
public Object resolve(Object value, SharedSessionContractImplementor session, Object owner)
throws HibernateException {
return value;
}
@Override
public Object semiResolve(Object value, SharedSessionContractImplementor session, Object owner)
throws HibernateException {
return value;
}
@Override
public boolean isAnyType() {
return false;
}
@Override
public boolean isModified(Object old, Object current, boolean[] checkable, SharedSessionContractImplementor session)
throws HibernateException {
return isDirty(old, current, session);
}
@Override
public boolean isSame(Object x, Object y) throws HibernateException {
return isEqual(x, y );
}
@Override
public boolean isEqual(Object x, Object y) {
return Objects.equals( x, y );
}
@Override
public int getHashCode(Object x) {
return x.hashCode();
}
@Override
public boolean isEqual(Object x, Object y, SessionFactoryImplementor factory) {
return isEqual(x, y );
}
@Override
public int getHashCode(Object x, SessionFactoryImplementor factory) {
return getHashCode(x );
}
@Override
public Type getSemiResolvedType(SessionFactoryImplementor factory) {
return this;
}
@Override
public Object replace(
Object original,
Object target,
SharedSessionContractImplementor session,
Object owner,
Map copyCache,
ForeignKeyDirection foreignKeyDirection)
throws HibernateException {
boolean include;
if ( isAssociationType() ) {
AssociationType atype = (AssociationType) this;
include = atype.getForeignKeyDirection()==foreignKeyDirection;
}
else {
include = ForeignKeyDirection.FROM_PARENT ==foreignKeyDirection;
}
return include ? replace(original, target, session, owner, copyCache) : target;
}
@Override
public void beforeAssemble(Serializable cached, SharedSessionContractImplementor session) {}
/*public Object copy(Object original, Object target, SharedSessionContractImplementor session, Object owner, Map copyCache)
throws HibernateException {
if (original==null) return null;
return assemble( disassemble(original, session), session, owner );
}*/
}