Lucene example source code file (QuotedFieldQueryNode.java)

This example Lucene source code file (QuotedFieldQueryNode.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Lucene tags/keywords

charsequence, charsequence, clonenotsupportedexception, clonenotsupportedexception, fieldquerynode, override, override, quotedfieldquerynode, quotedfieldquerynode, string

The Lucene QuotedFieldQueryNode.java source code

package org.apache.lucene.queryParser.core.nodes;

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.
 */

import org.apache.lucene.queryParser.core.parser.EscapeQuerySyntax;

/**
 * A {@link QuotedFieldQueryNode} represents phrase query. Example:
 * "life is great"
 */
public class QuotedFieldQueryNode extends FieldQueryNode {

  private static final long serialVersionUID = -6675157780051428987L;

  /**
   * @param field
   *          - field name
   * @param text
   *          - value
   * @param begin
   *          - position in the query string
   * @param end
   *          - position in the query string
   */
  public QuotedFieldQueryNode(CharSequence field, CharSequence text, int begin,
      int end) {
    super(field, text, begin, end);
  }

  @Override
  public CharSequence toQueryString(EscapeQuerySyntax escaper) {
    if (isDefaultField(this.field)) {
      return "\"" + getTermEscapeQuoted(escaper) + "\"";
    } else {
      return this.field + ":" + "\"" + getTermEscapeQuoted(escaper) + "\"";
    }
  }

  @Override
  public String toString() {
    return "<quotedfield start='" + this.begin + "' end='" + this.end
        + "' field='" + this.field + "' term='" + this.text + "'/>";
  }

  @Override
  public QuotedFieldQueryNode cloneTree() throws CloneNotSupportedException {
    QuotedFieldQueryNode clone = (QuotedFieldQueryNode) super.cloneTree();
    // nothing to do here
    return clone;
  }

}