org.elassandra.index.TimeUUIDPartitionFunction Maven / Gradle / Ivy

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/*
 * Copyright (c) 2017 Strapdata (http://www.strapdata.com)
 * Contains some code from Elasticsearch (http://www.elastic.co)
 * 
 * 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.elassandra.index;

import org.apache.cassandra.utils.UUIDGen;

import java.util.Arrays;
import java.util.Date;
import java.util.Locale;
import java.util.UUID;

public class TimeUUIDPartitionFunction implements PartitionFunction {
    @Override
    public String format(String pattern, Object... args) {
        return String.format(Locale.ROOT, pattern,  
                Arrays.stream(args)
                    .map(x -> { return (x instanceof UUID) ? new Date(UUIDGen.unixTimestamp((UUID)x)) : x; })
                    .toArray(Object[]::new));
    }
}