001/**
002 * Logback: the reliable, generic, fast and flexible logging framework.
003 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
004 *
005 * This program and the accompanying materials are dual-licensed under
006 * either the terms of the Eclipse Public License v1.0 as published by
007 * the Eclipse Foundation
008 *
009 *   or (per the licensee's choosing)
010 *
011 * under the terms of the GNU Lesser General Public License version 2.1
012 * as published by the Free Software Foundation.
013 */
014package ch.qos.logback.core.joran.conditional;
015
016import ch.qos.logback.core.spi.PropertyContainer;
017import ch.qos.logback.core.util.OptionHelper;
018
019public class PropertyWrapperForScripts {
020
021    PropertyContainer local;
022    PropertyContainer context;
023
024    // this method is invoked by reflection in PropertyEvalScriptBuilder
025    public void setPropertyContainers(PropertyContainer local, PropertyContainer context) {
026        this.local = local;
027        this.context = context;
028    }
029
030    public boolean isNull(String k) {
031        String val = OptionHelper.propertyLookup(k, local, context);
032        return (val == null);
033    }
034
035    public boolean isDefined(String k) {
036        String val = OptionHelper.propertyLookup(k, local, context);
037        return (val != null);
038    }
039
040    public String p(String k) {
041        return property(k);
042    }
043
044    public String property(String k) {
045        String val = OptionHelper.propertyLookup(k, local, context);
046        if (val != null)
047            return val;
048        else
049            return "";
050    }
051}