io.nosqlbench.engine.api.activityapi.planning.Sequence Maven / Gradle / Ivy

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package io.nosqlbench.engine.api.activityapi.planning;

/*
 * Copyright (c) 2022 nosqlbench
 * 
 * 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.
 */


import java.util.Arrays;
import java.util.List;
import java.util.function.Function;
import java.util.stream.Collectors;

public class Sequence implements OpSequence {
    private final SequencerType type;
    private final List elems;
    private final int[] seq;

    Sequence(SequencerType type, List elems, int[] seq) {
        this.type = type;
        this.elems = elems;
        this.seq = seq;
    }

    @Override
    public T apply(long selector) {
        int index = (int) (selector % seq.length);
        index = seq[index];
        return elems.get(index);
    }

    @Override
    public List getOps() {
        return elems;
    }

    @Override
    public int[] getSequence() {
        return seq;
    }

    public SequencerType getSequencerType() {
        return type;
    }

    @Override
    public  Sequence transform(Function func) {
        return new Sequence(type, elems.stream().map(func).collect(Collectors.toList()), seq);
    }

    @Override
    public String toString() {
        return Arrays.toString(this.seq);
    }
}