openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/schema/Unique.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.openjpa.jdbc.schema;

import org.apache.openjpa.jdbc.identifier.DBIdentifier;

/**
 * Represents a unique constraint. It can also represent a partial constraint.
 *
 * @author Abe White
 * @author Pinaki Poddar
 */
public class Unique extends LocalConstraint {
    private static final long serialVersionUID = 1L;

    public Unique() {
		super();
	}

    /**
     * Construct with given name.
     *
     * @param name the name of the constraint, if any
     * @param table the table of the constraint
     * @deprecated
     */
    @Deprecated
    public Unique(String name, Table table) {
        super(name, table);
    }

    public Unique(DBIdentifier name, Table table) {
        super(name, table);
    }

    @Override
    public boolean isLogical() {
        return false;
    }

    /**
     * Set the name of the constraint. This method cannot be called if the
     * constraint already belongs to a table.
     * @deprecated
     */
    @Deprecated
    @Override
    public void setName(String name) {
        super.setName(name);
    }

    @Override
    public void setIdentifier(DBIdentifier name) {
        super.setIdentifier(name);
    }

    /**
     * Return true if the structure of this primary key matches that of
     * the given one (same table, same columns).
     */
    public boolean equalsUnique(Unique unq) {
        return equalsLocalConstraint(unq);
    }
}