| /* |
| * Copyright 1999-2004 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.cocoon.woody.datatype.typeimpl; |
| |
| import org.apache.avalon.framework.configuration.Configurable; |
| import org.apache.avalon.framework.configuration.Configuration; |
| import org.apache.avalon.framework.configuration.ConfigurationException; |
| import org.apache.avalon.framework.service.ServiceException; |
| import org.apache.avalon.framework.service.ServiceManager; |
| import org.apache.avalon.framework.service.Serviceable; |
| import org.apache.cocoon.woody.Constants; |
| import org.apache.cocoon.woody.datatype.DatatypeBuilder; |
| import org.apache.cocoon.woody.datatype.DatatypeManager; |
| import org.apache.cocoon.woody.datatype.ValidationRule; |
| import org.apache.cocoon.woody.datatype.convertor.Convertor; |
| import org.apache.cocoon.woody.datatype.convertor.ConvertorBuilder; |
| import org.apache.cocoon.woody.util.DomHelper; |
| import org.apache.cocoon.woody.util.SimpleServiceSelector; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Abstract base class for datatype builders, most concrete datatype builders |
| * will derive from this class. |
| * @version $Id: AbstractDatatypeBuilder.java,v 1.11 2004/03/05 13:02:29 bdelacretaz Exp $ |
| */ |
| public abstract class AbstractDatatypeBuilder implements DatatypeBuilder, Serviceable, Configurable { |
| protected ServiceManager serviceManager; |
| private SimpleServiceSelector convertorBuilders; |
| private String defaultConvertorHint; |
| private Convertor plainConvertor; |
| |
| public void service(ServiceManager serviceManager) throws ServiceException { |
| this.serviceManager = serviceManager; |
| } |
| |
| public void configure(Configuration configuration) throws ConfigurationException { |
| convertorBuilders = new SimpleServiceSelector("convertor", ConvertorBuilder.class); |
| Configuration convertorsConf = configuration.getChild("convertors"); |
| convertorBuilders.configure(convertorsConf); |
| defaultConvertorHint = convertorsConf.getAttribute("default"); |
| |
| String plainConvertorHint = convertorsConf.getAttribute("plain"); |
| ConvertorBuilder plainConvertorBuilder; |
| try { |
| plainConvertorBuilder = (ConvertorBuilder)convertorBuilders.select(plainConvertorHint); |
| } catch (ServiceException e) { |
| throw new ConfigurationException("Convertor defined in plain attribute unavailable.", e); |
| } |
| |
| try { |
| plainConvertor = plainConvertorBuilder.build(null); |
| } catch (Exception e) { |
| throw new ConfigurationException("Error create plain convertor.", e); |
| } |
| } |
| |
| public void buildConvertor(Element datatypeEl, AbstractDatatype datatype) throws Exception { |
| Element convertorEl = DomHelper.getChildElement(datatypeEl, Constants.WD_NS, "convertor", false); |
| Convertor convertor = buildConvertor(convertorEl); |
| datatype.setConvertor(convertor); |
| } |
| |
| public Convertor buildConvertor(Element convertorEl) throws Exception { |
| String type = null; |
| // convertor configuration is allowed to be null, so check that it is not null |
| if (convertorEl != null) |
| type = convertorEl.getAttribute("type"); |
| if (type == null || type.equals("")) |
| type = defaultConvertorHint; |
| ConvertorBuilder convertorBuilder = (ConvertorBuilder)convertorBuilders.select(type); |
| return convertorBuilder.build(convertorEl); |
| } |
| |
| public Convertor getPlainConvertor() { |
| return plainConvertor; |
| } |
| |
| protected void buildValidationRules(Element datatypeElement, AbstractDatatype datatype, DatatypeManager datatypeManager) throws Exception { |
| Element validationElement = DomHelper.getChildElement(datatypeElement, Constants.WD_NS, "validation"); |
| if (validationElement != null) { |
| Element[] validationElements = DomHelper.getChildElements(validationElement, Constants.WD_NS); |
| for (int i = 0; i < validationElements.length; i++) { |
| ValidationRule rule = datatypeManager.createValidationRule(validationElements[i]); |
| if (rule.supportsType(datatype.getTypeClass(), datatype.isArrayType())) { |
| datatype.addValidationRule(rule); |
| } else { |
| throw new Exception("Validation rule \"" + validationElements[i].getLocalName() + "\" cannot be used with strings, error at " + DomHelper.getLocation(validationElements[i])); |
| } |
| } |
| } |
| } |
| } |