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/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License
 * 2.0 and the Server Side Public License, v 1; you may not use this file except
 * in compliance with, at your election, the Elastic License 2.0 or the Server
 * Side Public License, v 1.
 */

package org.elasticsearch.search.aggregations.bucket.filter;

import org.elasticsearch.search.aggregations.Aggregator;
import org.elasticsearch.search.aggregations.AggregatorFactories;
import org.elasticsearch.search.aggregations.AggregatorFactory;
import org.elasticsearch.search.aggregations.CardinalityUpperBound;
import org.elasticsearch.search.aggregations.bucket.filter.FiltersAggregator.KeyedFilter;
import org.elasticsearch.search.aggregations.support.AggregationContext;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

public class FiltersAggregatorFactory extends AggregatorFactory {

    private final List> filters;
    private final boolean keyed;
    private final boolean otherBucket;
    private final String otherBucketKey;

    public FiltersAggregatorFactory(
        String name,
        List filters,
        boolean keyed,
        boolean otherBucket,
        String otherBucketKey,
        AggregationContext context,
        AggregatorFactory parent,
        AggregatorFactories.Builder subFactories,
        Map metadata
    ) throws IOException {
        super(name, context, parent, subFactories, metadata);
        this.keyed = keyed;
        this.otherBucket = otherBucket;
        this.otherBucketKey = otherBucketKey;
        this.filters = new ArrayList<>(filters.size());
        for (KeyedFilter f : filters) {
            this.filters.add(QueryToFilterAdapter.build(context.searcher(), f.key(), context.buildQuery(f.filter())));
        }
    }

    @Override
    public Aggregator createInternal(Aggregator parent, CardinalityUpperBound cardinality, Map metadata)
        throws IOException {
        return FiltersAggregator.build(
            name,
            factories,
            filters,
            keyed,
            otherBucket ? otherBucketKey : null,
            context,
            parent,
            cardinality,
            metadata
        );
    }
}