| /* |
| * 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.validation.impl; |
| |
| import org.apache.cocoon.forms.datatype.ValidationRule; |
| import org.apache.cocoon.forms.formmodel.ExpressionContextImpl; |
| import org.apache.cocoon.forms.formmodel.Widget; |
| import org.apache.cocoon.forms.validation.ValidationError; |
| import org.apache.cocoon.forms.validation.ValidationErrorAware; |
| import org.apache.cocoon.forms.validation.WidgetValidator; |
| |
| /** |
| * An adapter to transform a {@link org.apache.cocoon.forms.datatype.ValidationRule} into a |
| * {@link org.apache.cocoon.forms.validation.WidgetValidator}. |
| * |
| * @version $Id$ |
| */ |
| public class ValidationRuleValidator implements WidgetValidator { |
| |
| private ValidationRule rule; |
| |
| public ValidationRuleValidator(ValidationRule rule) { |
| this.rule = rule; |
| } |
| |
| public boolean validate(Widget widget) |
| { |
| if (! (widget instanceof ValidationErrorAware)) { |
| // Invalid widget type |
| throw new IllegalArgumentException("Widget '" + widget.getRequestParameterName() + "' is not ValidationErrorAware"); |
| } |
| |
| Object value = widget.getValue(); |
| if (value == null) { |
| // No value. Consider it as correct (required="true" will set an error if present) |
| return true; |
| |
| } else { |
| // Non-null value: perform validation |
| ValidationError error = this.rule.validate(value, new ExpressionContextImpl(widget)); |
| if (error != null) { |
| // Validation failed |
| ((ValidationErrorAware)widget).setValidationError(error); |
| return false; |
| } else { |
| // Validation succeeded |
| return true; |
| } |
| } |
| } |
| } |