| 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 <i>do not</i> |
| match this sub-query will <i>not</i> match the boolean query. */ |
| public boolean required = false; |
| /** If true, documents documents which <i>do</i> |
| match this sub-query will <i>not</i> match the boolean query. */ |
| public boolean prohibited = false; |
| |
| /** Constructs a BooleanClause with query <code>q</code>, required |
| <code>r</code> and prohibited <code>p</code>. */ |
| public BooleanClause(Query q, boolean r, boolean p) { |
| query = q; |
| required = r; |
| prohibited = p; |
| } |
| |
| /** Returns true iff <code>o</code> 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); |
| } |
| |
| } |