org.apache.aurora.scheduler.config.validators.NotEmptyIterable.java Source code

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Here is the source code for org.apache.aurora.scheduler.config.validators.NotEmptyIterable.java

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/**
 * 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.apache.aurora.scheduler.config.validators;

import com.beust.jcommander.IValueValidator;
import com.beust.jcommander.ParameterException;
import com.google.common.collect.Iterables;

public class NotEmptyIterable implements IValueValidator<Iterable<?>> {
    @Override
    public void validate(String name, Iterable<?> value) throws ParameterException {
        if (Iterables.isEmpty(value)) {
            throw new ParameterException(String.format("%s must not be empty", name));
        }
    }
}