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Hibernate's core ORM functionality
/*
* 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.engine.spi;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.Serializable;
import org.hibernate.EntityMode;
import org.hibernate.internal.util.ValueHolder;
import org.hibernate.type.Type;
/**
* An ordered pair of a value and its Hibernate type.
*
* @see org.hibernate.type.Type
* @author Gavin King
*/
public final class TypedValue implements Serializable {
private final Type type;
private final Object value;
// "transient" is important here -- NaturalIdCacheKey needs to be Serializable
private transient ValueHolder hashcode;
public TypedValue(final Type type, final Object value) {
this.type = type;
this.value = value;
initTransients();
}
/**
* @deprecated explicit entity mode support is deprecated
*/
@Deprecated
public TypedValue(Type type, Object value, EntityMode entityMode) {
this(type, value);
}
public Object getValue() {
return value;
}
public Type getType() {
return type;
}
@Override
public String toString() {
return value==null ? "null" : value.toString();
}
@Override
public int hashCode() {
return hashcode.getValue();
}
@Override
public boolean equals(Object other) {
if ( this == other ) {
return true;
}
if ( other == null || getClass() != other.getClass() ) {
return false;
}
final TypedValue that = (TypedValue) other;
return type.getReturnedClass() == that.type.getReturnedClass()
&& type.isEqual( that.value, value );
}
private void readObject(ObjectInputStream ois)
throws ClassNotFoundException, IOException {
ois.defaultReadObject();
initTransients();
}
private void initTransients() {
this.hashcode = new ValueHolder( new ValueHolder.DeferredInitializer() {
@Override
public Integer initialize() {
return value == null ? 0 : type.getHashCode( value );
}
} );
}
}