| /* |
| * 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.geode.cache.query.internal; |
| |
| import org.apache.geode.cache.query.AmbiguousNameException; |
| import org.apache.geode.cache.query.FunctionDomainException; |
| import org.apache.geode.cache.query.NameResolutionException; |
| import org.apache.geode.cache.query.QueryInvocationTargetException; |
| import org.apache.geode.cache.query.TypeMismatchException; |
| import org.apache.geode.pdx.internal.PdxString; |
| |
| /** |
| * Class Description |
| * |
| * @version $Revision: 1.1 $ |
| */ |
| |
| |
| public class CompiledLiteral extends AbstractCompiledValue { |
| Object _obj; |
| PdxString _pdxString; |
| |
| public CompiledLiteral(Object obj) { |
| _obj = obj; |
| } |
| |
| |
| @Override |
| public int getType() { |
| return LITERAL; |
| } |
| |
| |
| @Override |
| public Object evaluate(ExecutionContext context) |
| throws FunctionDomainException, TypeMismatchException { |
| return _obj; |
| } |
| |
| /** |
| * creates new PdxString from String and caches it |
| */ |
| public PdxString getSavedPdxString() { |
| if (_pdxString == null) { |
| _pdxString = new PdxString((String) _obj); |
| } |
| return _pdxString; |
| } |
| |
| @Override |
| public void generateCanonicalizedExpression(StringBuilder clauseBuffer, ExecutionContext context) |
| throws AmbiguousNameException, TypeMismatchException { |
| if (_obj == null) { |
| clauseBuffer.insert(0, "null"); |
| } else if (_obj instanceof String) { |
| clauseBuffer.insert(0, '\'').insert(0, _obj.toString()).insert(0, '\''); |
| } else { |
| clauseBuffer.insert(0, _obj.toString()); |
| } |
| } |
| |
| @Override |
| public int getSizeEstimate(ExecutionContext context) throws FunctionDomainException, |
| TypeMismatchException, NameResolutionException, QueryInvocationTargetException { |
| // The literal could be true or false only in case of Filter |
| // Evaluation. Either way it should be evaluated first, Right? |
| return 0; |
| } |
| |
| } |