/*
 * Licensed to ElasticSearch and Shay Banon 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.index.query;

import org.elasticsearch.common.xcontent.XContentBuilder;

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

/**
 *
 */
public class SpanNearQueryBuilder extends BaseQueryBuilder implements SpanQueryBuilder, BoostableQueryBuilder<SpanNearQueryBuilder> {

    private ArrayList<SpanQueryBuilder> clauses = new ArrayList<SpanQueryBuilder>();

    private int slop = -1;

    private Boolean inOrder;

    private Boolean collectPayloads;

    private float boost = -1;

    private String queryName;

    public SpanNearQueryBuilder clause(SpanQueryBuilder clause) {
        clauses.add(clause);
        return this;
    }

    public SpanNearQueryBuilder slop(int slop) {
        this.slop = slop;
        return this;
    }

    public SpanNearQueryBuilder inOrder(boolean inOrder) {
        this.inOrder = inOrder;
        return this;
    }

    public SpanNearQueryBuilder collectPayloads(boolean collectPayloads) {
        this.collectPayloads = collectPayloads;
        return this;
    }

    public SpanNearQueryBuilder boost(float boost) {
        this.boost = boost;
        return this;
    }

    /**
     * Sets the query name for the filter that can be used when searching for matched_filters per hit.
     */
    public SpanNearQueryBuilder queryName(String queryName) {
        this.queryName = queryName;
        return this;
    }

    @Override
    protected void doXContent(XContentBuilder builder, Params params) throws IOException {
        if (clauses.isEmpty()) {
            throw new QueryBuilderException("Must have at least one clause when building a spanNear query");
        }
        if (slop == -1) {
            throw new QueryBuilderException("Must set the slop when building a spanNear query");
        }
        builder.startObject(SpanNearQueryParser.NAME);
        builder.startArray("clauses");
        for (SpanQueryBuilder clause : clauses) {
            clause.toXContent(builder, params);
        }
        builder.endArray();
        builder.field("slop", slop);
        if (inOrder != null) {
            builder.field("in_order", inOrder);
        }
        if (collectPayloads != null) {
            builder.field("collect_payloads", collectPayloads);
        }
        if (boost != -1) {
            builder.field("boost", boost);
        }
        if (queryName != null) {
            builder.field("_name", queryName);
        }
        builder.endObject();
    }
}

@@ -1204,19 +1204,23 @@
 ate 
-i
+I
 nt
+eger
  slop = 
 -1;%0A
@@ -1215,18 +1215,20 @@
  slop = 
--1
+null
 ;%0A%0A    p
@@ -2479,18 +2479,20 @@
 slop == 
--1
+null
 ) %7B%0A    
@@ -2858,16 +2858,27 @@
 p%22, slop
+.intValue()
 );%0A     

Allow slop = -1 in span queries