/**
* Logback: the reliable, generic, fast and flexible logging framework.
* Copyright (C) 1999-2013, QOS.ch. 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.action;
import java.util.Stack;
import org.xml.sax.Attributes;
import ch.qos.logback.core.joran.spi.InterpretationContext;
import ch.qos.logback.core.joran.spi.Pattern;
import ch.qos.logback.core.joran.util.PropertySetter;
import ch.qos.logback.core.util.AggregationType;
/**
* This action is responsible for tying together a parent object with one of its
* <em>simple</em> properties specified as an element but for which there is
* no explicit rule.
*
* @author Ceki Gülcü
*/
public class NestedBasicPropertyIA extends ImplicitAction {
// We use a stack of IADataForBasicProperty objects in order to
// support nested elements which are handled by the same NestedBasicPropertyIA instance.
// We push a IADataForBasicProperty instance in the isApplicable method (if the
// action is applicable) and pop it in the end() method.
// The XML well-formedness property will guarantee that a push will eventually
// be followed by the corresponding pop.
Stack<IADataForBasicProperty> actionDataStack = new Stack<IADataForBasicProperty>();
public boolean isApplicable(Pattern pattern, Attributes attributes,
InterpretationContext ec) {
// System.out.println("in NestedSimplePropertyIA.isApplicable [" + pattern +
// "]");
String nestedElementTagName = pattern.peekLast();
// no point in attempting if there is no parent object
if (ec.isEmpty()) {
return false;
}
Object o = ec.peekObject();
PropertySetter parentBean = new PropertySetter(o);
parentBean.setContext(context);
AggregationType aggregationType = parentBean
.computeAggregationType(nestedElementTagName);
switch (aggregationType) {
case NOT_FOUND:
case AS_COMPLEX_PROPERTY:
case AS_COMPLEX_PROPERTY_COLLECTION:
return false;
case AS_BASIC_PROPERTY:
case AS_BASIC_PROPERTY_COLLECTION:
IADataForBasicProperty ad = new IADataForBasicProperty(parentBean,
aggregationType, nestedElementTagName);
actionDataStack.push(ad);
// addInfo("NestedSimplePropertyIA deemed applicable [" + pattern + "]");
return true;
default:
addError("PropertySetter.canContainComponent returned " + aggregationType);
return false;
}
}
public void begin(InterpretationContext ec, String localName,
Attributes attributes) {
// NOP
}
public void body(InterpretationContext ec, String body) {
String finalBody = ec.subst(body);
// get the action data object pushed in isApplicable() method call
IADataForBasicProperty actionData = (IADataForBasicProperty) actionDataStack.peek();
switch (actionData.aggregationType) {
case AS_BASIC_PROPERTY:
actionData.parentBean.setProperty(actionData.propertyName, finalBody);
break;
case AS_BASIC_PROPERTY_COLLECTION:
actionData.parentBean
.addBasicProperty(actionData.propertyName, finalBody);
}
}
public void end(InterpretationContext ec, String tagName) {
// pop the action data object pushed in isApplicable() method call
actionDataStack.pop();
}
}