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Logback: the reliable, generic, fast and flexible logging framework. Copyright (C) 1999-2011, All rights reserved. This program and the accompanying materials are dual-licensed under either the terms of the Eclipse Public License v1.0 as published by the Eclipse Foundation or (per the licensee's choosing) under the terms of the GNU Lesser General Public License version 2.1 as published by the Free Software Foundation.
package ch.qos.logback.core.joran.conditional;
public class PropertyWrapperForScripts {
  // this method is invoked by reflection in PropertyEvalScriptBuilder
  public void setPropertyContainers(PropertyContainer localPropertyContainer context) {
    this. = local;
    this. = context;
  public boolean isNull(String k) {
    String val = OptionHelper.propertyLookup(k);
    return (val == null);
  public boolean isDefined(String k) {
    String val = OptionHelper.propertyLookup(k);
    return (val != null);
  public String p(String k) {
    return property(k);
  public String property(String k) {
    String val = OptionHelper.propertyLookup(k);
    if(val != null)
      return val;
      return "";
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