| /* |
| * 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.jackrabbit.oak.query.ast; |
| |
| import java.util.Locale; |
| |
| import javax.jcr.PropertyType; |
| |
| import org.apache.jackrabbit.oak.api.PropertyValue; |
| import org.apache.jackrabbit.oak.api.Type; |
| import org.apache.jackrabbit.oak.query.SQL2Parser; |
| |
| /** |
| * A literal of a certain data type, possibly "cast(..)" of a literal. |
| */ |
| public class LiteralImpl extends StaticOperandImpl { |
| |
| private final PropertyValue value; |
| private int hashCode; |
| |
| public LiteralImpl(PropertyValue value) { |
| this.value = value; |
| } |
| |
| public PropertyValue getLiteralValue() { |
| return value; |
| } |
| |
| @Override |
| boolean accept(AstVisitor v) { |
| return v.visit(this); |
| } |
| |
| private String escape() { |
| return SQL2Parser.escapeStringLiteral(value.getValue(Type.STRING)); |
| } |
| |
| @Override |
| public PropertyValue currentValue() { |
| // TODO namespace remapping? |
| return value; |
| } |
| |
| @Override |
| int getPropertyType() { |
| PropertyValue v = currentValue(); |
| return v == null ? PropertyType.UNDEFINED : v.getType().tag(); |
| } |
| |
| //------------------------------------------------------------< Object >-- |
| |
| @Override |
| public String toString() { |
| if (value.getType() == Type.STRING) { |
| return escape(); |
| } else if (value.getType() == Type.LONG) { |
| return Long.toString(value.getValue(Type.LONG)); |
| } else { |
| String type = PropertyType.nameFromValue(value.getType().tag()); |
| return "cast(" + escape() + " as " + type.toLowerCase(Locale.ENGLISH) + ')'; |
| } |
| } |
| |
| @Override |
| public boolean equals(Object that) { |
| if (this == that) { |
| return true; |
| } else if (that instanceof LiteralImpl) { |
| return value.equals(((LiteralImpl) that).value); |
| } else { |
| return false; |
| } |
| } |
| |
| @Override |
| public int hashCode() { |
| if (hashCode == 0) { |
| hashCode = value.hashCode(); |
| } |
| return hashCode; |
| } |
| |
| } |