| // *************************************************************************************************************************** |
| // * 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.juneau.examples.core.svl; |
| |
| import org.apache.juneau.svl.*; |
| |
| /** |
| * TODO. |
| * |
| * <ul class='seealso'> |
| * <li class='extlink'>{@source} |
| * </ul> |
| */ |
| public class SvlExample { |
| |
| /** |
| * Main method. |
| * |
| * @param args Unused. |
| */ |
| public static void main(String[] args) { |
| |
| VarResolver vr = VarResolver.DEFAULT; |
| |
| // $E{key[,default]} for getting environment variables |
| System.out.println(vr.resolve("JAVA_HOME=$E{JAVA_HOME, not defined}")); |
| |
| // $S{key[,default]} for getting system properties (uses System.getProperty() ) |
| System.out.println(vr.resolve("os.name=$S{os.name, not defined}")); |
| |
| // $IF{key[,default]} general if or if-else condition |
| // $NE{arg} will return true if not empty |
| System.out.println(vr.resolve("TEST_VAR is $IF{$NE{$E{TEST_VAR}}, not empty, empty}")); |
| |
| // $SW{arg,pattern1:then1[,pattern2:then2...]} switch-case |
| System.out.println(vr.resolve("$SW{Carrot, *Ap*:Fruit, *Car*:Veg, *:N/A}")); |
| |
| // $PR{arg,pattern,replace} pattern replace |
| System.out.println(vr.resolve("Java version=$PR{$S{java.version}, (_([0-9]+)), \\ build=\\$2}")); |
| |
| // $UC{arg} uppercase $LC{arg} lowecase |
| System.out.println(vr.resolve("$LC{JAVA_HOME} $UC{$E{JAVA_HOME}}")); |
| |
| // $LN{arg[,delimiter]} length var example |
| System.out.println(vr.resolve("parts = $LN{$S{os.version},.}, charcount = $LN{$S{os.version}}")); |
| |
| // $ST{arg,start[,end]} substring var example |
| System.out.println(vr.resolve("version = $ST{$S{java.version}, 0, 3}")); |
| |
| // $PE{arg,start[,end]} pattern extractor var example |
| System.out.println(vr.resolve("update = $PE{$S{java.version},_([0-9]+),1}")); |
| |
| /* |
| * See all supported variable types at, |
| * http://juneau.apache.org/site/apidocs-8.0.0/overview-summary.html#juneau-marshall.SimpleVariableLanguage |
| * NOTE - juneau-marshall.SimpleVariableLanguage supports nested variables well |
| * */ |
| } |
| |
| } |