/*
* 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.flink.graph.drivers.parameter;
import org.apache.flink.client.program.ProgramParametrizationException;
import org.apache.flink.util.Preconditions;
import javax.annotation.Nullable;
/**
* Utility methods for parsing command-line arguments.
*/
public class Util {
private Util() {}
// ------------------------------------------------------------------------
// Boolean Condition Checking (Argument)
// ------------------------------------------------------------------------
/**
* Checks the given boolean condition, and throws an {@code ProgramParametrizationException} if
* the condition is not met (evaluates to {@code false}). The exception will have the
* given error message.
*
* @param condition The condition to check
* @param errorMessage The message for the {@code ProgramParametrizationException} that is thrown if the check fails.
*
* @throws ProgramParametrizationException Thrown, if the condition is violated.
*
* @see Preconditions#checkNotNull(Object, String)
*/
public static void checkParameter(boolean condition, @Nullable Object errorMessage) {
if (!condition) {
throw new ProgramParametrizationException(String.valueOf(errorMessage));
}
}
}