org.hibernate.type.descriptor.java.CharacterArrayTypeDescriptor Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.type.descriptor.java;
import java.io.Reader;
import java.io.StringReader;
import java.sql.Clob;
import java.util.Arrays;
import org.hibernate.engine.jdbc.CharacterStream;
import org.hibernate.engine.jdbc.internal.CharacterStreamImpl;
import org.hibernate.type.descriptor.WrapperOptions;
/**
* TODO : javadoc
*
* @author Steve Ebersole
*/
public class CharacterArrayTypeDescriptor extends AbstractTypeDescriptor {
public static final CharacterArrayTypeDescriptor INSTANCE = new CharacterArrayTypeDescriptor();
@SuppressWarnings({ "unchecked" })
public CharacterArrayTypeDescriptor() {
super( Character[].class, ArrayMutabilityPlan.INSTANCE );
}
public String toString(Character[] value) {
return new String( unwrapChars( value ) );
}
public Character[] fromString(String string) {
return wrapChars( string.toCharArray() );
}
@Override
public boolean areEqual(Character[] one, Character[] another) {
return one == another
|| ( one != null && another != null && Arrays.equals( one, another ) );
}
@Override
public int extractHashCode(Character[] chars) {
int hashCode = 1;
for ( Character aChar : chars ) {
hashCode = 31 * hashCode + aChar;
}
return hashCode;
}
@SuppressWarnings({ "unchecked" })
public X unwrap(Character[] value, Class type, WrapperOptions options) {
if ( value == null ) {
return null;
}
if ( Character[].class.isAssignableFrom( type ) ) {
return (X) value;
}
if ( String.class.isAssignableFrom( type ) ) {
return (X) new String( unwrapChars( value ) );
}
if ( Clob.class.isAssignableFrom( type ) ) {
return (X) options.getLobCreator().createClob( new String( unwrapChars( value ) ) );
}
if ( Reader.class.isAssignableFrom( type ) ) {
return (X) new StringReader( new String( unwrapChars( value ) ) );
}
if ( CharacterStream.class.isAssignableFrom( type ) ) {
return (X) new CharacterStreamImpl( new String( unwrapChars( value ) ) );
}
throw unknownUnwrap( type );
}
public Character[] wrap(X value, WrapperOptions options) {
if ( value == null ) {
return null;
}
if ( Character[].class.isInstance( value ) ) {
return (Character[]) value;
}
if ( String.class.isInstance( value ) ) {
return wrapChars( ( (String) value ).toCharArray() );
}
if ( Clob.class.isInstance( value ) ) {
return wrapChars( DataHelper.extractString( ( (Clob) value ) ).toCharArray() );
}
if ( Reader.class.isInstance( value ) ) {
return wrapChars( DataHelper.extractString( (Reader) value ).toCharArray() );
}
throw unknownWrap( value.getClass() );
}
@SuppressWarnings({ "UnnecessaryBoxing" })
private Character[] wrapChars(char[] chars) {
if ( chars == null ) {
return null;
}
final Character[] result = new Character[chars.length];
for ( int i = 0; i < chars.length; i++ ) {
result[i] = Character.valueOf( chars[i] );
}
return result;
}
@SuppressWarnings({ "UnnecessaryUnboxing" })
private char[] unwrapChars(Character[] chars) {
if ( chars == null ) {
return null;
}
final char[] result = new char[chars.length];
for ( int i = 0; i < chars.length; i++ ) {
result[i] = chars[i].charValue();
}
return result;
}
}