/*
* 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.woody.datatype.validationruleimpl;
import org.apache.cocoon.woody.datatype.ValidationRule;
import org.apache.cocoon.woody.util.DomHelper;
import org.outerj.expression.Expression;
import org.w3c.dom.Element;
/**
* Builds {@link LengthValidationRule}s.
*
* @version $Id: LengthValidationRuleBuilder.java 433543 2006-08-22 06:22:54Z crossley $
*/
public class LengthValidationRuleBuilder extends AbstractValidationRuleBuilder {
public ValidationRule build(Element validationRuleElement) throws Exception {
LengthValidationRule rule = new LengthValidationRule();
String exactExprString = validationRuleElement.getAttribute("exact");
String minExprString = validationRuleElement.getAttribute("min");
String maxExprString = validationRuleElement.getAttribute("max");
if (exactExprString.length() > 0) {
Expression expression = parseExpression(exactExprString, validationRuleElement, "exact");
rule.setExactExpr(expression);
} else if (minExprString.length() > 0 && maxExprString.length() > 0) {
Expression expression = parseExpression(minExprString, validationRuleElement, "min");
rule.setMinExpr(expression);
expression = parseExpression(maxExprString, validationRuleElement, "max");
rule.setMaxExpr(expression);
} else if (minExprString.length() > 0) {
Expression expression = parseExpression(minExprString, validationRuleElement, "min");
rule.setMinExpr(expression);
} else if (maxExprString.length() > 0) {
Expression expression = parseExpression(maxExprString, validationRuleElement, "max");
rule.setMaxExpr(expression);
} else {
throw new Exception("length validation rule requires a min and/or max, or exact attribute at " + DomHelper.getLocation(validationRuleElement));
}
buildFailMessage(validationRuleElement, rule);
return rule;
}
}