001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.geronimo.system.configuration.condition; 018 019 import java.util.Map; 020 import java.util.Properties; 021 022 import org.apache.commons.jexl.context.HashMapContext; 023 import org.apache.commons.logging.Log; 024 import org.apache.commons.logging.LogFactory; 025 026 /** 027 * Basic parser utility functions. 028 * 029 * @version $Rev: 706640 $ $Date: 2008-10-21 14:44:05 +0000 (Tue, 21 Oct 2008) $ 030 */ 031 public class ParserUtils { 032 033 public static void addDefaultVariables(Map vars) { 034 vars.put("java", new JavaVariable()); 035 vars.put("os", new OsVariable()); 036 037 // Install properties (to allow getProperty(x,y) to be used for defaults 038 Properties props = new Properties(); 039 props.putAll(System.getProperties()); 040 vars.put("props", props); 041 } 042 043 public static class DebugHashMapContext extends HashMapContext { 044 private static final Log LOG = LogFactory.getLog(DebugHashMapContext.class); 045 public Object get(Object o) { 046 Object r = super.get(o); 047 LOG.debug("Get property: " + o + " " + r); 048 return r; 049 } 050 } 051 }