org.liquibase.groovy.delegate.ArgumentDelegate.groovy Maven / Gradle / Ivy
/*
* Copyright 2011-2015 Tim Berglund and Steven C. Saliman
*
* 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.liquibase.groovy.delegate
import liquibase.exception.ChangeLogParseException
/**
* This class processes the {@code arg} closure that can be present in an
* {@code executeCommand} change. The arguments that are processed by this
* closure will not be expanded for databaseChangeLog property substitution.
* That is up to the caller.
*
* @author Steven C. Saliman
*/
class ArgumentDelegate {
def args = []
def changeSetId = '' // used for error messages
def changeName = '' // used for error messages
/**
* Process an argument where the argument is simply a string. This is not
* how the Liquibase XML works, but it is really nice shorthand.
* @param value the argument to add
*/
def arg(String value) {
args << value
}
/**
* Process an argument where the argument is in the {@code value} entry of
* the given map. This is consistent with how Liquibase XML works.
* @param valueMap the map containing the argument.
*/
def arg(Map valueMap) {
// we want a helpful message if the value map has anything other than a
// "value" key.
valueMap.each { key, value ->
if ( key == "value") {
args << valueMap.value
} else {
throw new ChangeLogParseException("ChangeSet '${changeSetId}': '${key}' is not a valid argument atrribute of ${changeName} changes")
}
}
}
/**
* Groovy calls methodMissing when it can't find a matching method to call.
* We use it to tell the user which changeSet had the invalid element.
* @param name the name of the method Groovy wanted to call.
* @param args the original arguments to that method.
*/
def methodMissing(String name, args) {
throw new ChangeLogParseException("ChangeSet '${changeSetId}': '${name}' is not a valid child element of ${changeName} changes")
}
}