liquibase.ext.hibernate.diff.UnexpectedIndexChangeGenerator Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of liquibase-hibernate5 Show documentation

Liquibase extension for hibernate 5 integration including generating changesets based on changed hibernate mapping files

The newest version!

package liquibase.ext.hibernate.diff;

/*
 * #%L
 * Liquibase Hibernate 5 Integration
 * %%
 * Copyright (C) 2016 Liquibase.org
 * %%
 * 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.
 * #L%
 */

import liquibase.change.Change;
import liquibase.database.Database;
import liquibase.diff.output.DiffOutputControl;
import liquibase.diff.output.changelog.ChangeGeneratorChain;
import liquibase.ext.hibernate.database.HibernateDatabase;
import liquibase.structure.DatabaseObject;
import liquibase.structure.core.Index;

/**
 * Indexes tend to be added in the database that don't correspond to what is in Hibernate, so we suppress all dropIndex changes
 * based on indexes defined in the database but not in hibernate.
 */
public class UnexpectedIndexChangeGenerator extends liquibase.diff.output.changelog.core.UnexpectedIndexChangeGenerator {

    @Override
    public int getPriority(Class objectType, Database database) {
        if (Index.class.isAssignableFrom(objectType)) {
            return PRIORITY_ADDITIONAL;
        }
        return PRIORITY_NONE;
    }

    @Override
    public Change[] fixUnexpected(DatabaseObject unexpectedObject, DiffOutputControl control, Database referenceDatabase, Database comparisonDatabase, ChangeGeneratorChain chain) {
        if (referenceDatabase instanceof HibernateDatabase || comparisonDatabase instanceof HibernateDatabase) {
            return null;
        } else {
            return super.fixUnexpected(unexpectedObject, control, referenceDatabase, comparisonDatabase, chain);
        }
    }
}