| /** |
| * 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.atlas.groovy; |
| |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * Represents a literal value. |
| */ |
| public class LiteralExpression extends AbstractGroovyExpression { |
| |
| public static final LiteralExpression TRUE = new LiteralExpression(true); |
| public static final LiteralExpression FALSE = new LiteralExpression(false); |
| public static final LiteralExpression NULL = new LiteralExpression(null); |
| |
| private Object value; |
| private boolean translateToParameter = true; |
| private boolean addTypeSuffix = false; |
| |
| public LiteralExpression(Object value, boolean addTypeSuffix) { |
| this.value = value; |
| this.translateToParameter = value instanceof String; |
| this.addTypeSuffix = addTypeSuffix; |
| } |
| |
| public LiteralExpression(Object value, boolean addTypeSuffix, boolean translateToParameter) { |
| this.value = value; |
| this.translateToParameter = translateToParameter; |
| this.addTypeSuffix = addTypeSuffix; |
| } |
| |
| public LiteralExpression(Object value) { |
| this.value = value; |
| this.translateToParameter = value instanceof String; |
| } |
| |
| private String getTypeSuffix() { |
| if (!addTypeSuffix) { |
| return ""; |
| } |
| if (value.getClass() == Long.class) { |
| return "L"; |
| } |
| |
| if (value.getClass() == Float.class) { |
| return "f"; |
| } |
| |
| if (value.getClass() == Double.class) { |
| return "d"; |
| } |
| |
| return ""; |
| } |
| |
| @Override |
| public void generateGroovy(GroovyGenerationContext context) { |
| |
| if (translateToParameter) { |
| GroovyExpression result = context.addParameter(value); |
| result.generateGroovy(context); |
| return; |
| } |
| |
| if (value instanceof String) { |
| String escapedValue = getEscapedValue(); |
| context.append("'"); |
| context.append(escapedValue); |
| context.append("'"); |
| |
| } else { |
| context.append(String.valueOf(value)); |
| context.append(getTypeSuffix()); |
| } |
| |
| } |
| |
| public Object getValue() { |
| return value; |
| } |
| |
| private String getEscapedValue() { |
| String escapedValue = (String)value; |
| escapedValue = escapedValue.replaceAll(Pattern.quote("\\"), Matcher.quoteReplacement("\\\\")); |
| escapedValue = escapedValue.replaceAll(Pattern.quote("'"), Matcher.quoteReplacement("\\'")); |
| return escapedValue; |
| } |
| |
| public void setTranslateToParameter(boolean translateToParameter) { |
| this.translateToParameter = translateToParameter; |
| } |
| |
| @Override |
| public List<GroovyExpression> getChildren() { |
| return Collections.emptyList(); |
| } |
| |
| @Override |
| public GroovyExpression copy(List<GroovyExpression> newChildren) { |
| assert newChildren.size() == 0; |
| return new LiteralExpression(value, addTypeSuffix, translateToParameter); |
| } |
| } |