| /* |
| * 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. |
| */ |
| package org.apache.lucene.search; |
| |
| import java.io.IOException; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Objects; |
| |
| /** |
| * A Basic abstract query that all IndriQueries can extend to implement toString, equals, |
| * getClauses, and iterator. |
| */ |
| public abstract class IndriQuery extends Query implements Iterable<BooleanClause> { |
| |
| private List<BooleanClause> clauses; |
| |
| public IndriQuery(List<BooleanClause> clauses) { |
| this.clauses = clauses; |
| } |
| |
| @Override |
| public abstract Weight createWeight(IndexSearcher searcher, ScoreMode scoreMode, float boost) |
| throws IOException; |
| |
| @Override |
| public String toString(String field) { |
| StringBuilder buffer = new StringBuilder(); |
| |
| int i = 0; |
| for (BooleanClause c : this) { |
| buffer.append(c.getOccur().toString()); |
| |
| Query subQuery = c.getQuery(); |
| if (subQuery instanceof BooleanQuery) { // wrap sub-bools in parens |
| buffer.append("("); |
| buffer.append(subQuery.toString(field)); |
| buffer.append(")"); |
| } else { |
| buffer.append(subQuery.toString(field)); |
| } |
| |
| if (i != clauses.size() - 1) { |
| buffer.append(" "); |
| } |
| i += 1; |
| } |
| |
| return buffer.toString(); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| return sameClassAs(o) && equalsTo(getClass().cast(o)); |
| } |
| |
| @Override |
| public void visit(QueryVisitor visitor) { |
| visitor.visitLeaf(this); |
| } |
| |
| private boolean equalsTo(IndriQuery other) { |
| return clauses.equals(other.clauses); |
| } |
| |
| @Override |
| public int hashCode() { |
| int hashCode = Objects.hash(clauses); |
| if (hashCode == 0) { |
| hashCode = 1; |
| } |
| return hashCode; |
| } |
| |
| @Override |
| public Iterator<BooleanClause> iterator() { |
| return clauses.iterator(); |
| } |
| |
| public List<BooleanClause> getClauses() { |
| return this.clauses; |
| } |
| } |