| // Copyright 2004 The Apache Software Foundation |
| // |
| // Licensed 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.tapestry.parse; |
| |
| import org.apache.tapestry.Tapestry; |
| import org.apache.tapestry.util.IPropertyHolder; |
| import org.apache.tapestry.util.xml.DocumentParseException; |
| import org.xml.sax.Attributes; |
| |
| /** |
| * Handles the <property> element in Tapestry specifications, which is |
| * designed to hold meta-data about specifications. |
| * Expects the top object on the stack to be a {@link org.apache.tapestry.util.IPropertyHolder}. |
| * |
| * @author Howard Lewis Ship |
| * @version $Id$ |
| * @since 3.0 |
| * |
| **/ |
| |
| public class SetMetaPropertyRule extends AbstractSpecificationRule |
| { |
| private String _name; |
| private String _value; |
| |
| public void begin(String namespace, String name, Attributes attributes) throws Exception |
| { |
| _name = getValue(attributes, "name"); |
| |
| // First, get the value from the attribute, if present |
| |
| _value = getValue(attributes, "value"); |
| |
| } |
| |
| public void body(String namespace, String name, String text) throws Exception |
| { |
| if (Tapestry.isBlank(text)) |
| return; |
| |
| if (_value != null) |
| { |
| throw new DocumentParseException( |
| Tapestry.format("SpecificationParser.no-attribute-and-body", "value", name), |
| getResourceLocation()); |
| } |
| |
| _value = text.trim(); |
| } |
| |
| public void end(String namespace, String name) throws Exception |
| { |
| if (_value == null) |
| throw new DocumentParseException( |
| Tapestry.format("SpecificationParser.required-extended-attribute", name, "value"), |
| getResourceLocation()); |
| |
| IPropertyHolder holder = (IPropertyHolder) digester.peek(); |
| |
| holder.setProperty(_name, _value); |
| |
| _name = null; |
| _value = null; |
| } |
| |
| } |