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Hibernate example source code file (DefaultValueIntegerType.java)

This example Hibernate source code file (DefaultValueIntegerType.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Hibernate tags/keywords

class, hibernateexception, hibernateexception, integer, io, jdbc, logger, number, number, object, object, serializable, serializable, sessionimplementor, sql, sqlexception, usertype, util

The Hibernate DefaultValueIntegerType.java source code

package org.hibernate.test.typeparameters;

import java.io.Serializable;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import java.util.Properties;

import org.jboss.logging.Logger;

import org.hibernate.HibernateException;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.usertype.ParameterizedType;
import org.hibernate.usertype.UserType;


/**
 * @author Michi
 */
public class DefaultValueIntegerType implements UserType, ParameterizedType, Serializable {
	private static final Logger log = Logger.getLogger( DefaultValueIntegerType.class );

	private Integer defaultValue;

	public int[] sqlTypes() {
		return new int[] {Types.INTEGER};
	}

	public Class returnedClass() {
		return int.class;
	}

	public boolean equals(Object x, Object y) throws HibernateException {
		if (x==y) return true;
		if (x==null || y==null) return false;
		return x.equals(y);
	}

	public Object nullSafeGet(ResultSet rs, String[] names, SessionImplementor session, Object owner) throws HibernateException, SQLException {
		Number result = (Number) rs.getObject(names[0]);
		return result==null ? defaultValue : new Integer(result.intValue());
	}

	public void nullSafeSet(PreparedStatement st, Object value, int index, SessionImplementor session) throws HibernateException, SQLException {
		if (value == null || defaultValue.equals(value) ) {
            log.trace("binding null to parameter: " + index);
			st.setNull(index, Types.INTEGER);
		} else {
            log.trace("binding " + value + " to parameter: " + index);
			st.setInt(index, ((Integer)value).intValue());
		}
	}

	public Object deepCopy(Object value) throws HibernateException {
		return new Integer(((Integer)value).intValue());
	}

	public boolean isMutable() {
		return false;
	}

	public int hashCode(Object x) throws HibernateException {
		return x.hashCode();
	}

	public Object assemble(Serializable cached, Object owner)
	throws HibernateException {
		return cached;
	}

	public Serializable disassemble(Object value) throws HibernateException {
		return (Serializable) value;
	}

	public Object replace(Object original, Object target, Object owner)
	throws HibernateException {
		return original;
	}

	public void setParameterValues(Properties parameters) {
		this.defaultValue = Integer.valueOf((String) parameters.get("default"));
	}

}

Other Hibernate examples (source code examples)

Here is a short list of links related to this Hibernate DefaultValueIntegerType.java source code file:

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