/*
 * 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;

import org.apache.lucene.search.Query;
import org.elasticsearch.TransportVersion;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.index.query.AbstractQueryBuilder;
import org.elasticsearch.index.query.SearchExecutionContext;
import org.elasticsearch.search.DummyQueryParserPlugin.DummyQuery;
import org.elasticsearch.xcontent.XContentBuilder;
import org.elasticsearch.xcontent.XContentParser;

import java.io.IOException;

public class DummyQueryBuilder extends AbstractQueryBuilder<DummyQueryBuilder> {
    public static final String NAME = "dummy";

    public DummyQueryBuilder() {}

    public DummyQueryBuilder(StreamInput in) throws IOException {
        super(in);
    }

    @Override
    protected void doWriteTo(StreamOutput out) throws IOException {
        // only the superclass has state
    }

    @Override
    protected void doXContent(XContentBuilder builder, Params params) throws IOException {
        builder.startObject(NAME).endObject();
    }

    public static DummyQueryBuilder fromXContent(XContentParser parser) throws IOException {
        XContentParser.Token token = parser.nextToken();
        assert token == XContentParser.Token.END_OBJECT;
        return new DummyQueryBuilder();
    }

    @Override
    protected Query doToQuery(SearchExecutionContext context) throws IOException {
        return new DummyQuery();
    }

    @Override
    protected int doHashCode() {
        return 0;
    }

    @Override
    protected boolean doEquals(DummyQueryBuilder other) {
        return true;
    }

    @Override
    public String getWriteableName() {
        return NAME;
    }

    @Override
    public TransportVersion getMinimalSupportedVersion() {
        return TransportVersion.ZERO;
    }
}
