/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.pig.validator;
import java.io.IOException;
import org.apache.pig.classification.InterfaceAudience;
import org.apache.pig.classification.InterfaceStability;
import org.apache.pig.impl.logicalLayer.FrontendException;
/**
*
* Interface defining Pig commands and a
* {@link PigCommandFilter#validate(Command)} method to operate on it
*
*/
@InterfaceAudience.Private
@InterfaceStability.Evolving
public interface PigCommandFilter {
public enum Command {
DEFINE, DECLARE, DEFAULT, EXPLAIN, EXEC, FS, IMPORT, LS, SH, MAPREDUCE, REGISTER, SET, CAT, CD, DUMP, KILL, PWD, MV, CP, COPYTOLOCAL, COPYFROMLOCAL, MKDIR, RM, RMF, RUN, ILLUSTRATE
}
/**
* Validates a Pig command as defined by {@link Command}.
*
* @param command
* @throws IOException
*/
public void validate(Command command) throws FrontendException;
}