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/*
* Copyright (c) 2009-2016, Data Geekery GmbH (http://www.datageekery.com)
* All rights reserved.
*
* Licensed 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.
*
* Other licenses:
* -----------------------------------------------------------------------------
* Commercial licenses for this work are available. These replace the above
* ASL 2.0 and offer limited warranties, support, maintenance, and commercial
* database integrations.
*
* For more information, please visit: http://www.jooq.org/licenses
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*/
package org.jooq;
import java.util.Collection;
import org.jooq.exception.DataAccessException;
/**
* A ForeignKey is an object referencing a {@link UniqueKey}. It
* represents a FOREIGN KEY relationship between two tables.
*
* @param The FOREIGN KEY's owner table record
* @param The referenced KEY's owner table record
* @author Lukas Eder
*/
public interface ForeignKey extends Key {
/**
* The referenced Key
*/
UniqueKey getKey();
/**
* Fetch a parent record of a given record through this foreign key
*
* This returns a parent record referenced by a given record through this
* foreign key. If no parent record was found, this returns
* null
*
* @throws DataAccessException if something went wrong executing the query
* @see TableRecord#fetchParent(ForeignKey)
*/
O fetchParent(R record) throws DataAccessException;
/**
* Fetch parent records of a given set of record through this foreign key
*
* This returns parent records referenced by any record in a given set of
* records through this foreign key.
*
* @throws DataAccessException if something went wrong executing the query
* @see TableRecord#fetchParent(ForeignKey)
*/
Result fetchParents(R... records) throws DataAccessException;
/**
* Fetch parent records of a given set of record through this foreign key
*
* This returns parent records referenced by any record in a given set of
* records through this foreign key.
*
* @throws DataAccessException if something went wrong executing the query
* @see TableRecord#fetchParent(ForeignKey)
*/
Result fetchParents(Collection records) throws DataAccessException;
/**
* Fetch child records of a given record through this foreign key
*
* This returns childs record referencing a given record through this
* foreign key
*
* @throws DataAccessException if something went wrong executing the query
* @see UpdatableRecord#fetchChild(ForeignKey)
* @see UpdatableRecord#fetchChildren(ForeignKey)
*/
Result fetchChildren(O record) throws DataAccessException;
/**
* Fetch child records of a given set of records through this foreign key
*
* This returns childs record referencing any record in a given set of
* records through this foreign key
*
* @throws DataAccessException if something went wrong executing the query
* @see UpdatableRecord#fetchChild(ForeignKey)
* @see UpdatableRecord#fetchChildren(ForeignKey)
*/
Result fetchChildren(O... records) throws DataAccessException;
/**
* Fetch child records of a given set of records through this foreign key
*
* This returns childs record referencing any record in a given set of
* records through this foreign key
*
* @throws DataAccessException if something went wrong executing the query
* @see UpdatableRecord#fetchChild(ForeignKey)
* @see UpdatableRecord#fetchChildren(ForeignKey)
*/
Result fetchChildren(Collection records) throws DataAccessException;
}