subprojects/s4-core/src/test/java/org/apache/s4/wordcount/KeyValueKeyFinder.java

/**
 * 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.s4.wordcount;


import java.util.Arrays;
import java.util.List;

import org.apache.s4.base.KeyFinder;

public class KeyValueKeyFinder implements KeyFinder<KeyValueEvent> {

    public static final String UNIQUE_KEY = "KEY";

    @Override
    public List<String> get(final KeyValueEvent event) {
        return Arrays.asList(new String[] {UNIQUE_KEY});
    }

}