| /* |
| * 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.solr.search.function; |
| |
| import java.io.IOException; |
| import java.util.Objects; |
| |
| import org.apache.lucene.queries.function.FunctionValues; |
| import org.apache.lucene.queries.function.ValueSource; |
| import org.apache.lucene.queries.function.valuesource.ComparisonBoolFunction; |
| |
| /** |
| * Compares two values for equality. |
| * It should work on not only numbers but strings and custom things. |
| * |
| * @since 7.4 |
| */ |
| public class EqualFunction extends ComparisonBoolFunction { |
| |
| public EqualFunction(ValueSource lhs, ValueSource rhs, String name) { |
| super(lhs, rhs, name); |
| } |
| |
| @Override |
| public boolean compare(int doc, FunctionValues lhs, FunctionValues rhs) throws IOException { |
| Object objL = lhs.objectVal(doc); |
| Object objR = rhs.objectVal(doc); |
| if (isNumeric(objL) && isNumeric(objR)) { |
| if (isInteger(objL) && isInteger(objR)) { |
| return Long.compare(((Number)objL).longValue(), ((Number)objR).longValue()) == 0; |
| } else { |
| return Double.compare(((Number)objL).doubleValue(), ((Number)objR).doubleValue()) == 0; |
| } |
| } else { |
| return Objects.equals(objL, objR); |
| } |
| } |
| |
| private static boolean isInteger(Object obj) { |
| return obj instanceof Integer || obj instanceof Long; |
| } |
| |
| private static boolean isNumeric(Object obj) { |
| return obj instanceof Number; |
| } |
| } |