// Copyright (C) 2018 The Android Open Source Project, 2009-2015 Elasticsearch
//
// 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.google.gerrit.elasticsearch.builders;

import java.io.IOException;

/**
 * A Query that does fuzzy matching for a specific value.
 *
 * <p>A trimmed down version of org.elasticsearch.index.query.RegexpQueryBuilder.
 */
class RegexpQueryBuilder extends QueryBuilder {

  private final String name;
  private final String regexp;

  /**
   * Constructs a new term query.
   *
   * @param name The name of the field
   * @param regexp The regular expression
   */
  RegexpQueryBuilder(String name, String regexp) {
    this.name = name;
    this.regexp = regexp;
  }

  @Override
  protected void doXContent(XContentBuilder builder) throws IOException {
    builder.startObject("regexp");
    builder.startObject(name);

    builder.field("value", regexp);
    builder.field("flags_value", 65535);

    builder.endObject();
    builder.endObject();
  }
}