org.hibernate.type.descriptor.java.PrimitiveCharacterArrayTypeDescriptor 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.Reader;
import java.io.StringReader;
import java.sql.Clob;
import java.util.Arrays;
import java.util.Comparator;
import org.hibernate.engine.jdbc.CharacterStream;
import org.hibernate.engine.jdbc.internal.CharacterStreamImpl;
import org.hibernate.type.descriptor.WrapperOptions;
/**
* Descriptor for {@code char[]} handling.
*
* @author Steve Ebersole
*/
public class PrimitiveCharacterArrayTypeDescriptor extends AbstractTypeDescriptor {
public static final PrimitiveCharacterArrayTypeDescriptor INSTANCE = new PrimitiveCharacterArrayTypeDescriptor();
@SuppressWarnings({ "unchecked" })
protected PrimitiveCharacterArrayTypeDescriptor() {
super( char[].class, ArrayMutabilityPlan.INSTANCE );
}
public String toString(char[] value) {
return new String( value );
}
public char[] fromString(String string) {
return string.toCharArray();
}
@Override
public boolean areEqual(char[] one, char[] another) {
return one == another
|| ( one != null && another != null && Arrays.equals( one, another ) );
}
@Override
public int extractHashCode(char[] chars) {
int hashCode = 1;
for ( char aChar : chars ) {
hashCode = 31 * hashCode + aChar;
}
return hashCode;
}
@Override
@SuppressWarnings({ "unchecked" })
public Comparator getComparator() {
return IncomparableComparator.INSTANCE;
}
@SuppressWarnings({ "unchecked" })
public X unwrap(char[] value, Class type, WrapperOptions options) {
if ( value == null ) {
return null;
}
if ( char[].class.isAssignableFrom( type ) ) {
return (X) value;
}
if ( String.class.isAssignableFrom( type ) ) {
return (X) new String( value );
}
if ( Clob.class.isAssignableFrom( type ) ) {
return (X) options.getLobCreator().createClob( new String( value ) );
}
if ( Reader.class.isAssignableFrom( type ) ) {
return (X) new StringReader( new String( value ) );
}
if ( CharacterStream.class.isAssignableFrom( type ) ) {
return (X) new CharacterStreamImpl( new String( value ) );
}
throw unknownUnwrap( type );
}
public char[] wrap(X value, WrapperOptions options) {
if ( value == null ) {
return null;
}
if ( char[].class.isInstance( value ) ) {
return (char[]) value;
}
if ( String.class.isInstance( value ) ) {
return ( (String) value ).toCharArray();
}
if ( Clob.class.isInstance( value ) ) {
return DataHelper.extractString( ( (Clob) value ) ).toCharArray();
}
if ( Reader.class.isInstance( value ) ) {
return DataHelper.extractString( ( (Reader) value ) ).toCharArray();
}
throw unknownWrap( value.getClass() );
}
}