| /* |
| * 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.synapse.config.xml; |
| |
| import org.apache.axiom.om.OMAbstractFactory; |
| import org.apache.axiom.om.OMElement; |
| import org.apache.axiom.om.OMFactory; |
| import org.apache.axiom.om.OMNamespace; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.synapse.SynapseConstants; |
| import org.apache.synapse.SynapseException; |
| import org.apache.synapse.mediators.TemplateParameter; |
| |
| import javax.xml.namespace.QName; |
| import java.util.Collection; |
| |
| /** |
| * A utility class for serializing instances of TemplateParameter objects by reading |
| * through a given XML configuration |
| * |
| * <pre> |
| * <element> |
| * <parameter name="p1" [default="value|expression"] [optional=(true|false)]/>* |
| * </element> |
| * </pre> |
| */ |
| public class TemplateParameterSerializer { |
| private static final Log log = LogFactory.getLog(TemplateParameterSerializer.class); |
| |
| protected static final OMFactory fac = OMAbstractFactory.getOMFactory(); |
| protected static final OMNamespace synNS = SynapseConstants.SYNAPSE_OMNAMESPACE; |
| protected static final OMNamespace nullNS |
| = fac.createOMNamespace(XMLConfigConstants.NULL_NAMESPACE, ""); |
| |
| protected static final QName PARAMETER_Q |
| = new QName(XMLConfigConstants.SYNAPSE_NAMESPACE, "parameter"); |
| |
| /** |
| * Serialize all the parameters to the given parent element. For each and every |
| * parameter there will be a separate parameter element created inside the parent element. |
| * |
| * @param parent element to which parameter elements should be added |
| * @param params the list of TemplateParameter objects |
| */ |
| public static void serializeTemplateParameters(OMElement parent, |
| Collection<TemplateParameter> params) { |
| serializeTemplateParameters(parent, params, PARAMETER_Q); |
| } |
| |
| /** |
| * Serialize all the parameters to the given parent element. For each and every |
| * parameter there will be a separate parameter element created inside the parent element. |
| * |
| * @param parent element to which parameter elements should be added |
| * @param params the list of TemplateParameter objects |
| * @param childElementName of the parameter element to be created |
| */ |
| public static void serializeTemplateParameters(OMElement parent, |
| Collection<TemplateParameter> params, |
| QName childElementName) { |
| for (TemplateParameter tp : params) { |
| serializeTemplateParameter(parent,tp, childElementName); |
| } |
| } |
| |
| /** |
| * Serialize the parameter to the given parent element. There will be a element created with |
| * given configuration inside the parent element. |
| * |
| * @param parent element to which parameter elements should be added |
| * @param tp a property to be serialized |
| * @param childElementName of the parameter element to be created |
| */ |
| public static void serializeTemplateParameter(OMElement parent, |
| TemplateParameter tp, |
| QName childElementName) { |
| OMElement param = fac.createOMElement(childElementName, parent); |
| if (tp.getName() != null) { |
| param.addAttribute(fac.createOMAttribute("name", nullNS, tp.getName())); |
| } else { |
| String msg = "Template parameter name missing"; |
| log.error(msg); |
| throw new SynapseException(msg); |
| } |
| |
| if (tp.getDefaultValue() != null) { |
| new ValueSerializer().serializeValue(tp.getDefaultValue(), "default", param); |
| |
| if (tp.isOptional()) { |
| param.addAttribute(fac.createOMAttribute("optional", nullNS, "true")); |
| } |
| } |
| } |
| } |