wrapperbinarytype.java

一个Java持久层类库

//$Id: $
package org.hibernate.type;

import org.hibernate.HibernateException;

/**
 * @author Emmanuel Bernard
 */
public class WrapperBinaryType extends AbstractBynaryType {
	protected Object toExternalFormat(byte[] bytes) {
		if (bytes == null) return null;
		int length = bytes.length;
		Byte[] result = new Byte[length];
		for ( int index = 0; index < length ; index++ ) {
			result[index] = new Byte( bytes[index] );
		}
		return result;
	}

	protected byte[] toInternalFormat(Object val) {
		if (val == null) return null;
		Byte[] bytes = (Byte[]) val;
		int length = bytes.length;
		byte[] result = new byte[length];
		for ( int i = 0; i < length ; i++ ) {
			if (bytes[i] == null)
				throw new HibernateException("Unable to store an Byte[] when one of its element is null");
			result[i] = bytes[i].byteValue();
		}
		return result;
	}

	public Class getReturnedClass() {
		return Byte[].class;
	}

	public String getName() {
		//TODO find a decent name before documenting
		return "wrapper-binary";
	}
}