/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch 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.elasticsearch.search.facet;

import org.elasticsearch.index.fielddata.LongValues;

/**
 * Simple Facet aggregator base class for {@link LongValues}
 */
public abstract class LongFacetAggregatorBase {
    private int total;
    private int missing;

    public void onDoc(int docId, LongValues values) {
        final int numValues = values.setDocument(docId);
        int tempMissing = 1;
        for (int i = 0; i < numValues; i++) {
            tempMissing = 0;
            onValue(docId, values.nextValue());
            total++;
        }
        missing += tempMissing;
    }

    protected abstract void onValue(int docId, long next);

    public final int total() {
        return total;
    }

    public final int missing() {
        return missing;
    }
}
