org.grails.plugins.databasemigration.command.DbmUpdateCountSqlCommand.groovy Maven / Gradle / Ivy

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/*
 * Copyright 2015 original authors
 *
 * 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.grails.plugins.databasemigration.command

import grails.dev.commands.ApplicationCommand
import groovy.transform.CompileStatic
import liquibase.Liquibase
import org.grails.plugins.databasemigration.DatabaseMigrationException

@CompileStatic
class DbmUpdateCountSqlCommand implements ApplicationCommand, ApplicationContextDatabaseMigrationCommand {

    final String description = 'Writes the SQL that will partially update a database to STDOUT or a file'

    @Override
    void handle() {
        def number = args[0]
        if (!number) {
            throw new DatabaseMigrationException("The $name command requires a change set number argument")
        }
        if (!number.isNumber()) {
            throw new DatabaseMigrationException("The change set number argument '$number' isn't a number")
        }

        def filename = args[1]
        withLiquibase { Liquibase liquibase ->
            withFileOrSystemOutWriter(filename) { Writer writer ->
                liquibase.update(number.toInteger(), contexts, writer)
            }
        }
    }
}