/**
* JBoss, Home of Professional Open Source
* Copyright Red Hat, Inc., and individual contributors.
*
* 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 org.jboss.aerogear.unifiedpush.migrator;
import liquibase.database.Database;
import liquibase.exception.CustomPreconditionErrorException;
import liquibase.exception.CustomPreconditionFailedException;
import liquibase.precondition.CustomPrecondition;
import liquibase.snapshot.SnapshotGeneratorFactory;
import liquibase.structure.core.Column;
import liquibase.structure.core.UniqueConstraint;
public class UniqueConstraintExistsCheck implements CustomPrecondition {
private String tableName;
private String columnNames;
private String constraintName;
public void setTableName(String tableName) {
this.tableName = tableName;
}
public void setColumnNames(String columnNames) {
this.columnNames = columnNames;
}
public void setConstraintName(String constraintName) {
this.constraintName = constraintName;
}
@Override
public void check(Database database) throws CustomPreconditionFailedException, CustomPreconditionErrorException {
Column column = new Column(this.columnNames);
UniqueConstraint uniqueConstraint = new UniqueConstraint(this.constraintName, null, null, this.tableName, column);
boolean markFailed = false;
try {
if (!SnapshotGeneratorFactory.getInstance().has(uniqueConstraint, database)) {
markFailed = true;
}
} catch (Exception e) {
throw new CustomPreconditionErrorException("custom precondition check errored", e);
}
if (markFailed) {
throw new CustomPreconditionFailedException(this.constraintName + " doesn't exist");
}
}
}