Hibernate example source code file (Datatype.java)

This example Hibernate source code file (Datatype.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, class, datatype, datatype, override, override, string, string

The Hibernate Datatype.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2010 by Red Hat Inc and/or its affiliates or by
 * third-party contributors as indicated by either @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.metamodel.relational;

/**
 * Models a JDBC {@link java.sql.Types DATATYPE}
 *
 * @todo Do we somehow link this in with {@link org.hibernate.internal.util.jdbc.TypeInfo} ?
 *
 * @author Steve Ebersole
 */
public class Datatype {
	private final int typeCode;
	private final String typeName;
	private final Class javaType;
	private final int hashCode;

	public Datatype(int typeCode, String typeName, Class javaType) {
		this.typeCode = typeCode;
		this.typeName = typeName;
		this.javaType = javaType;
		this.hashCode = generateHashCode();
	}

    private int generateHashCode() {
        int result = typeCode;
        if ( typeName != null ) {
            result = 31 * result + typeName.hashCode();
        }
        if ( javaType != null ) {
            result = 31 * result + javaType.hashCode();
        }
        return result;
    }

    public int getTypeCode() {
		return typeCode;
	}

	public String getTypeName() {
		return typeName;
	}

	public Class getJavaType() {
		return javaType;
	}

	@Override
	public boolean equals(Object o) {
		if ( this == o ) {
			return true;
		}
		if ( o == null || getClass() != o.getClass() ) {
			return false;
		}

		Datatype datatype = (Datatype) o;

		return typeCode == datatype.typeCode
				&& javaType.equals( datatype.javaType )
				&& typeName.equals( datatype.typeName );

	}

	@Override
	public int hashCode() {
		return hashCode;
	}

	@Override
	public String toString() {
		return super.toString() + "[code=" + typeCode + ", name=" + typeName + ", javaClass=" + javaType.getName() + "]";
	}
}