/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.cocoon.forms.formmodel.algorithms;
import java.util.Iterator;
import org.apache.cocoon.forms.formmodel.CalculatedFieldAlgorithm;
import org.apache.cocoon.forms.util.DomHelper;
import org.outerj.expression.Expression;
import org.w3c.dom.Element;
/**
* Builds a {@link org.apache.cocoon.forms.formmodel.algorithms.RepeatedFormula}
* algorithm.
* <p>
* The syntax is as follows :
* <code>
* <fd:value type="repeatedformula" [inital-result="..."] eval="..." [triggers="..."]/>
* </code>
* </p>
* @version $Id: RepeatedFormulaBuilder.java 449149 2006-09-23 03:58:05Z crossley $
*/
public class RepeatedFormulaBuilder extends SimpleFormulaBuilder {
public CalculatedFieldAlgorithm build(Element algorithmElement) throws Exception {
RepeatedFormula ret = new RepeatedFormula();
String formula = DomHelper.getAttribute(algorithmElement, "eval");
setupExpression(formula,ret);
// Remove formulaResult and formulaCurrent fom the list of triggers
Iterator iter = ret.getTriggerWidgets();
while (iter.hasNext()) {
String wdg = (String) iter.next();
if (wdg.equals("formulaResult") || wdg.equals("formulaCurrent")) {
iter.remove();
}
}
// Set the repeat-on attribute and add it to the list of triggers
String repeatOn = DomHelper.getAttribute(algorithmElement, "repeat-on");
ret.setRepeatOn(repeatOn);
ret.addTrigger(repeatOn);
String initialResult = DomHelper.getAttribute(algorithmElement, "initial-result");
Expression expression = setupExpression(initialResult);
ret.setInitialResult(expression);
super.setup(algorithmElement, ret);
return ret;
}
}