io.cdap.wrangler.parser.NoOpDirectiveContext Maven / Gradle / Ivy
/*
* Copyright © 2017-2019 Cask Data, Inc.
*
* 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 io.cdap.wrangler.parser;
import io.cdap.wrangler.api.DirectiveContext;
/**
* This class {@link NoOpDirectiveContext} is a pass through implementation of
* {@link DirectiveContext}.
*/
public class NoOpDirectiveContext implements DirectiveContext {
/**
* Checks if the directive is aliased.
*
* @param directive to be checked for aliasing.
* @return true if the directive has an alias, false otherwise.
*/
@Override
public boolean hasAlias(String directive) {
return false;
}
/**
* Returns the root directive aliasee
* @param directive
* @return
*/
@Override
public String getAlias(String directive) {
return directive;
}
/**
* Checks if the directive is being excluded from being used.
*
* @param directive to be checked for exclusion.
* @return true if excluded, false otherwise.
*/
@Override
public boolean isExcluded(String directive) {
return false;
}
}