alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

What this is

This file 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.

Other links

The source code

package org.apache.lucene.search;

/**
 * Copyright 2004 The Apache Software Foundation
 *
 * 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.
 */

/** A clause in a BooleanQuery. */
public class BooleanClause implements java.io.Serializable {
  /** The query whose matching documents are combined by the boolean query. */
  public Query query;
  /** If true, documents documents which do not
    match this sub-query will not match the boolean query. */
  public boolean required = false;
  /** If true, documents documents which do
    match this sub-query will not match the boolean query. */
  public boolean prohibited = false;
  
  /** Constructs a BooleanClause with query q, required
    r and prohibited p. */ 
  public BooleanClause(Query q, boolean r, boolean p) {
    query = q;
    required = r;
    prohibited = p;
  }

  /** Returns true iff o is equal to this. */
  public boolean equals(Object o) {
    if (!(o instanceof BooleanClause))
      return false;
    BooleanClause other = (BooleanClause)o;
    return this.query.equals(other.query)
      && (this.required == other.required)
      && (this.prohibited == other.prohibited);
  }

  /** Returns a hash code value for this object.*/
  public int hashCode() {
    return query.hashCode() ^ (this.required?1:0) ^ (this.prohibited?2:0);
  }

}
... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2024 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.