package org.hibernate.type.descriptor.java;
import java.io.Reader;
import java.io.StringReader;
import java.sql.Clob;
import org.hibernate.engine.jdbc.CharacterStream;
import org.hibernate.engine.jdbc.internal.CharacterStreamImpl;
import org.hibernate.type.descriptor.WrapperOptions;
public class StringTypeDescriptor extends AbstractTypeDescriptor<String> {
public static final StringTypeDescriptor INSTANCE = new StringTypeDescriptor();
public StringTypeDescriptor() {
super( String.class );
}
public String toString(String value) {
return value;
}
public String fromString(String string) {
return string;
}
@SuppressWarnings({ "unchecked" })
public <X> X unwrap(String value, Class<X> type, WrapperOptions options) {
if ( value == null ) {
return null;
}
if ( String.class.isAssignableFrom( type ) ) {
return (X) value;
}
if ( Reader.class.isAssignableFrom( type ) ) {
return (X) new StringReader( value );
}
if ( CharacterStream.class.isAssignableFrom( type ) ) {
return (X) new CharacterStreamImpl( value );
}
if ( Clob.class.isAssignableFrom( type ) ) {
return (X) options.getLobCreator().createClob( value );
}
if ( DataHelper.isNClob( type ) ) {
return (X) options.getLobCreator().createNClob( value );
}
throw unknownUnwrap( type );
}
public <X> String wrap(X value, WrapperOptions options) {
if ( value == null ) {
return null;
}
if ( String.class.isInstance( value ) ) {
return (String) value;
}
if ( Reader.class.isInstance( value ) ) {
return DataHelper.extractString( (Reader) value );
}
if ( Clob.class.isInstance( value ) ) {
return DataHelper.extractString( (Clob) value );
}
throw unknownWrap( value.getClass() );
}
}