logback-android/src/main/java/ch/qos/logback/core/joran/action/AppenderAction.java
@SuppressWarnings("unchecked")
  public void begin(InterpretationContext ec, String localName,
      Attributes attributes) throws ActionException {
    // We are just beginning, reset variables
    appender = null;
    inError = false;

    String className = attributes.getValue(CLASS_ATTRIBUTE);
    if (OptionHelper.isEmpty(className)) {
      addError("Missing class name for appender. Near [" + localName
          + "] line " + getLineNumber(ec));
      inError = true;
      return;
    }

    try {
      addInfo("About to instantiate appender of type [" + className + "]");
      warnDeprecated(className);

      appender = (Appender<E>) OptionHelper.instantiateByClassName(className,
          ch.qos.logback.core.Appender.class, context);

      appender.setContext(context);

      String appenderName = ec.subst(attributes.getValue(NAME_ATTRIBUTE));

      if (OptionHelper.isEmpty(appenderName)) {
        addWarn("No appender name given for appender of type " + className
            + "].");
      } else {
        appender.setName(appenderName);
        addInfo("Naming appender as [" + appenderName + "]");
      }

      // The execution context contains a bag which contains the appenders
      // created thus far.
      HashMap<String, Appender<E>> appenderBag = (HashMap<String, Appender<E>>) ec.getObjectMap().get(
          ActionConst.APPENDER_BAG);

      // add the appender just created to the appender bag.
      appenderBag.put(appenderName, appender);

      ec.pushObject(appender);
    } catch (Exception oops) {
      inError = true;
      addError("Could not create an Appender of type [" + className + "].",
          oops);
      throw new ActionException(oops);
    }
  }
@SuppressWarnings("unchecked")
  public void begin(InterpretationContext ec, String localName,
      Attributes attributes) throws ActionException {
    // We are just beginning, reset variables
    appender = null;
    inError = false;

    String className = attributes.getValue(CLASS_ATTRIBUTE);
    if (OptionHelper.isEmpty(className)) {
      addError("Missing class name for appender. Near [" + localName
          + "] line " + getLineNumber(ec));
      inError = true;
      return;
    }

    try {
      addInfo("About to instantiate appender of type [" + className + "]");
      warnDeprecated(className);

      appender = (Appender<E>) OptionHelper.instantiateByClassName(className,
          ch.qos.logback.core.Appender.class, context);

      appender.setContext(context);

      String appenderName = ec.subst(attributes.getValue(NAME_ATTRIBUTE));

      if (OptionHelper.isEmpty(appenderName)) {
        addWarn("No appender name given for appender of type " + className
            + "].");
      } else {
        appender.setName(appenderName);
        addInfo("Naming appender as [" + appenderName + "]");
      }

      // The execution context contains a bag which contains the appenders
      // created thus far.
      HashMap<String, Appender<E>> appenderBag = (HashMap<String, Appender<E>>) ec.getObjectMap().get(
          ActionConst.APPENDER_BAG);

      // add the appender just created to the appender bag.
      appenderBag.put(appenderName, appender);

      ec.pushObject(appender);
    } catch (Exception oops) {
      inError = true;
      addError("Could not create an Appender of type [" + className + "].",
          oops);
      throw new ActionException(oops);
    }
  }
@ SuppressWarnings ( "unchecked" ) public void begin ( InterpretationContext ec , String localName , Attributes attributes ) throws ActionException { // We are just beginning, reset variables appender = null ; inError = false ; String className = attributes . getValue ( CLASS_ATTRIBUTE ) ; if ( OptionHelper . isEmpty ( className ) ) { addError ( "Missing class name for appender. Near [" + localName + "] line " + getLineNumber ( ec ) ) ; inError = true ; return ; } try { addInfo ( "About to instantiate appender of type [" + className + "]" ) ; warnDeprecated ( className ) ; appender = ( Appender < E > ) OptionHelper . instantiateByClassName ( className , ch . qos . logback . core . Appender . class , context ) ; appender . setContext ( context ) ; String appenderName = ec . subst ( attributes . getValue ( NAME_ATTRIBUTE ) ) ; if ( OptionHelper . isEmpty ( appenderName ) ) { addWarn ( "No appender name given for appender of type " + className + "]." ) ; } else { appender . setName ( appenderName ) ; addInfo ( "Naming appender as [" + appenderName + "]" ) ; } // The execution context contains a bag which contains the appenders // created thus far. HashMap < String , Appender < E > > appenderBag = ( HashMap < String , Appender < E > > ) ec . getObjectMap ( ) . get ( ActionConst . APPENDER_BAG ) ; // add the appender just created to the appender bag. appenderBag . put ( appenderName , appender ) ; ec . pushObject ( appender ) ; } catch ( Exception oops ) { inError = true ; addError ( "Could not create an Appender of type [" + className + "]." , oops ) ; throw new ActionException ( oops ) ; } }
Instantiates an appender of the given class and sets its name.

The appender thus generated is placed in the {@link InterpretationContext}'s
appender bag.
Instantiates an appender of the given class and sets its name .