| /* |
| * 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; |
| |
| import org.apache.avalon.framework.thread.ThreadSafe; |
| 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.logger.AbstractLogEnabled; |
| import org.apache.avalon.framework.service.ServiceException; |
| import org.apache.avalon.framework.service.Serviceable; |
| import org.apache.avalon.framework.service.ServiceManager; |
| import org.apache.avalon.framework.activity.Initializable; |
| import org.apache.avalon.framework.activity.Disposable; |
| import org.apache.avalon.framework.CascadingException; |
| import org.apache.cocoon.woody.util.DomHelper; |
| import org.apache.cocoon.woody.util.SimpleServiceSelector; |
| import org.apache.cocoon.woody.datatype.convertor.Convertor; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Implementation of the {@link DatatypeManager} component. |
| * |
| * <p>It supports an extensible number of datatype and validation rule implementations |
| * by delegating the creation of them to {@link DatatypeBuilder}s and {@link ValidationRuleBuilder}s. |
| * Currently the list of datatype and validationrule builders is hardcoded, but this will |
| * become externally configurable in the future. |
| * |
| * @version $Id: DefaultDatatypeManager.java,v 1.8 2004/03/05 13:02:28 bdelacretaz Exp $ |
| * |
| */ |
| public class DefaultDatatypeManager extends AbstractLogEnabled implements DatatypeManager, ThreadSafe, Serviceable, |
| Configurable, Initializable, Disposable { |
| private SimpleServiceSelector typeBuilderSelector; |
| private SimpleServiceSelector validationRuleBuilderSelector; |
| private ServiceManager serviceManager; |
| private Configuration configuration; |
| |
| public void configure(Configuration configuration) throws ConfigurationException { |
| this.configuration = configuration; |
| } |
| |
| public void service(ServiceManager serviceManager) throws ServiceException { |
| this.serviceManager = serviceManager; |
| } |
| |
| public void initialize() throws Exception { |
| typeBuilderSelector = new SimpleServiceSelector("datatype", DatatypeBuilder.class); |
| typeBuilderSelector.service(serviceManager); |
| typeBuilderSelector.configure(configuration.getChild("datatypes")); |
| |
| validationRuleBuilderSelector = new SimpleServiceSelector("validation-rule", ValidationRuleBuilder.class); |
| validationRuleBuilderSelector.service(serviceManager); |
| validationRuleBuilderSelector.configure(configuration.getChild("validation-rules")); |
| |
| configuration = null; |
| } |
| |
| public Datatype createDatatype(Element datatypeElement, boolean arrayType) throws Exception { |
| String typeName = DomHelper.getAttribute(datatypeElement, "base"); |
| DatatypeBuilder builder = null; |
| try { |
| builder = (DatatypeBuilder)typeBuilderSelector.select(typeName); |
| } catch (ServiceException e) { |
| throw new CascadingException("Unknown datatype '" + typeName + "' specified at " + DomHelper.getLocation(datatypeElement), e); |
| } |
| return builder.build(datatypeElement, arrayType, this); |
| } |
| |
| public ValidationRule createValidationRule(Element validationRuleElement) throws Exception { |
| String name = validationRuleElement.getLocalName(); |
| ValidationRuleBuilder builder = null; |
| try { |
| builder = (ValidationRuleBuilder)validationRuleBuilderSelector.select(name); |
| } catch (ServiceException e) { |
| throw new CascadingException("Unknown validation rule \"" + name + "\" specified at " + DomHelper.getLocation(validationRuleElement), e); |
| } |
| return builder.build(validationRuleElement); |
| } |
| |
| public Convertor createConvertor(String dataTypeName, Element convertorElement) throws Exception { |
| DatatypeBuilder datatypeBulder = (DatatypeBuilder)typeBuilderSelector.select(dataTypeName); |
| return datatypeBulder.buildConvertor(convertorElement); |
| } |
| |
| public void dispose() { |
| typeBuilderSelector.dispose(); |
| validationRuleBuilderSelector.dispose(); |
| } |
| } |