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/*
* 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.meta;
import java.io.Serializable;
import java.sql.SQLException;
import org.apache.openjpa.jdbc.kernel.JDBCStore;
import org.apache.openjpa.jdbc.sql.RowManager;
import org.apache.openjpa.kernel.OpenJPAStateManager;
import org.apache.openjpa.util.MetaDataException;
/**
* Interface implemented by all mapping strategies.
*
* @author Abe White
* @since 0.4.0
*/
public interface Strategy
extends Serializable {
/**
* Return the alias of this strategy. For custom strategies, return the
* full class name.
*/
String getAlias();
/**
* Map the owning mapping using this strategy.
*
* @param adapt if true, use the owning mapping's raw mapping info
* to set its ORM data; if false, ORM data will already be set
* @throws MetaDataException if unable to map
*/
void map(boolean adapt);
/**
* Perform caching and other initialization operations. This method is
* called after {@link #map}, and after all related components have been
* mapped as well.
*/
void initialize();
/**
* Set values for the mapping into the proper rows. For class mappings,
* this method will be called only after the corresponding method has
* been called for all fields of this mapping.
*/
void insert(OpenJPAStateManager sm, JDBCStore store, RowManager rm)
throws SQLException;
/**
* Set values for the mapping into the proper rows.
*
* @see #insert
*/
void update(OpenJPAStateManager sm, JDBCStore store, RowManager rm)
throws SQLException;
/**
* Set the where values appropriately to delete the proper instance,
* and set all relations on non-secondary tables as updates. This allows
* foreign key analysis.
*
* @see #insert
*/
void delete(OpenJPAStateManager sm, JDBCStore store, RowManager rm)
throws SQLException;
/**
* Return {@link Boolean#FALSE} if this mapping does not customize the
* insert process, {@link Boolean#TRUE} if it does, or null if it does
* customize the insert, but also relies on the standard insert method
* being called. Implement the {@link #customInsert} method
* to implement the custom insertion behavior.
*/
Boolean isCustomInsert(OpenJPAStateManager sm, JDBCStore store);
/**
* Return {@link Boolean#FALSE} if this mapping does not customize the
* update process, {@link Boolean#TRUE} if it does, or null if it does
* customize the update, but also relies on the standard update method
* being called. Implement the {@link #customUpdate} method
* to override the default update behavior.
*/
Boolean isCustomUpdate(OpenJPAStateManager sm, JDBCStore store);
/**
* Return {@link Boolean#FALSE} if this mapping does not customize the
* delete process, {@link Boolean#TRUE} if it does, or null if it does
* customize the delete, but also relies on the standard delete method
* being called. Implement the {@link #customDelete} method
* to override the default deletion behavior.
*/
Boolean isCustomDelete(OpenJPAStateManager sm, JDBCStore store);
/**
* Override this method to customize flushing this mapping. For classes,
* this method must also flush all fields. For fields, this method
* is called after the owning object is inserted, so if this field is in
* a row with other fields, that row will already exist.
*/
void customInsert(OpenJPAStateManager sm, JDBCStore store)
throws SQLException;
/**
* Override this method to customize flushing this mapping. For classes,
* this method must also flush all fields.
*/
void customUpdate(OpenJPAStateManager sm, JDBCStore store)
throws SQLException;
/**
* Override this method to customize flushing this mapping. For classes,
* this method must also flush all fields. For fields, this method
* will be called after the owning object is deleted.
*/
void customDelete(OpenJPAStateManager sm, JDBCStore store)
throws SQLException;
}
