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- /*
- * Copyright 2004-2011 H2 Group.
- * Copyright 2011 James Moger.
- *
- * 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.
- */
-
- package com.iciql;
-
- import com.iciql.Iciql.IQVersion;
-
- /**
- * Interface which defines a class to handle table changes based on model
- * versions. An implementation of <i>DbUpgrader</i> must be annotated with the
- * <i>IQDatabase</i> annotation, which defines the expected database version
- * number.
- */
- public interface DbUpgrader {
-
- /**
- * Defines method interface to handle database upgrades. This method is only
- * called if your <i>DbUpgrader</i> implementation is annotated with
- * IQDatabase.
- *
- * @param db the database
- * @param fromVersion the old version
- * @param toVersion the new version
- * @return true for successful upgrade. If the upgrade is successful, the
- * version registry is automatically updated.
- */
- boolean upgradeDatabase(Db db, int fromVersion, int toVersion);
-
- /**
- * Defines method interface to handle table upgrades.
- *
- * @param db the database
- * @param schema the schema
- * @param table the table
- * @param fromVersion the old version
- * @param toVersion the new version
- * @return true for successful upgrade. If the upgrade is successful, the
- * version registry is automatically updated.
- */
- boolean upgradeTable(Db db, String schema, String table, int fromVersion, int toVersion);
-
- /**
- * The default database upgrader. It throws runtime exception instead of
- * handling upgrade requests.
- */
- @IQVersion(0)
- public static class DefaultDbUpgrader implements DbUpgrader {
-
- public boolean upgradeDatabase(Db db, int fromVersion, int toVersion) {
- throw new IciqlException("Please provide your own DbUpgrader implementation.");
- }
-
- public boolean upgradeTable(Db db, String schema, String table, int fromVersion, int toVersion) {
- throw new IciqlException("Please provide your own DbUpgrader implementation.");
- }
-
- }
-
- }
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