org.hibernate.type.descriptor.java.JavaTypeDescriptor Maven / Gradle / Ivy
/*
* 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.descriptor.java;
import java.io.Serializable;
import java.util.Comparator;
import org.hibernate.type.descriptor.WrapperOptions;
/**
* Descriptor for the Java side of a value mapping.
*
* @author Steve Ebersole
*/
public interface JavaTypeDescriptor extends Serializable {
/**
* Retrieve the Java type handled here.
*
* @return The Java type.
*/
public Class getJavaTypeClass();
/**
* Retrieve the mutability plan for this Java type.
*
* @return The mutability plan
*/
public MutabilityPlan getMutabilityPlan();
/**
* Retrieve the natural comparator for this type.
*
* @return The natural comparator.
*/
public Comparator getComparator();
/**
* Extract a proper hash code for this value.
*
* @param value The value for which to extract a hash code.
*
* @return The extracted hash code.
*/
public int extractHashCode(T value);
/**
* Determine if two instances are equal
*
* @param one One instance
* @param another The other instance
*
* @return True if the two are considered equal; false otherwise.
*/
public boolean areEqual(T one, T another);
/**
* Extract a loggable representation of the value.
*
* @param value The value for which to extract a loggable representation.
*
* @return The loggable representation
*/
public String extractLoggableRepresentation(T value);
public String toString(T value);
public T fromString(String string);
/**
* Unwrap an instance of our handled Java type into the requested type.
*
* As an example, if this is a {@code JavaTypeDescriptor} and we are asked to unwrap
* the {@code Integer value} as a {@code Long} we would return something like
* Long.valueOf( value.longValue() ).
*
* Intended use is during {@link java.sql.PreparedStatement} binding.
*
* @param value The value to unwrap
* @param type The type as which to unwrap
* @param options The options
* @param The conversion type.
*
* @return The unwrapped value.
*/
public X unwrap(T value, Class type, WrapperOptions options);
/**
* Wrap a value as our handled Java type.
*
* Intended use is during {@link java.sql.ResultSet} extraction.
*
* @param value The value to wrap.
* @param options The options
* @param The conversion type.
*
* @return The wrapped value.
*/
public T wrap(X value, WrapperOptions options);
}