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/*
 * Copyright (c) 2016 Couchbase, Inc.
 *
 * 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 com.couchbase.client.java.search.queries;

import com.couchbase.client.core.annotations.InterfaceAudience;
import com.couchbase.client.core.annotations.InterfaceStability;
import com.couchbase.client.java.document.json.JsonArray;
import com.couchbase.client.java.document.json.JsonObject;

/**
 * A compound FTS query that performs a logical AND between all its sub-queries (conjunction).
 *
 * @author Simon Baslé
 * @author Michael Nitschinger
 * @since 2.3.0
 */
@InterfaceStability.Experimental
@InterfaceAudience.Public
public class ConjunctionQuery extends AbstractCompoundQuery {

    public ConjunctionQuery(AbstractFtsQuery... queries) {
        super(queries);
    }

    @Override
    public ConjunctionQuery boost(double boost) {
        super.boost(boost);
        return this;
    }

    public ConjunctionQuery and(AbstractFtsQuery... queries) {
        super.addAll(queries);
        return this;
    }

    @Override
    protected void injectParams(JsonObject input) {
        if (childQueries.isEmpty()) {
            throw new IllegalArgumentException("Compound query has no child query");
        }

        JsonArray conjuncts = JsonArray.create();
        for (AbstractFtsQuery childQuery : childQueries) {
            JsonObject childJson = JsonObject.create();
            childQuery.injectParamsAndBoost(childJson);
            conjuncts.add(childJson);
        }
        input.put("conjuncts", conjuncts);
    }
}