| /* |
| * 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.OMElement; |
| import org.apache.axiom.om.OMFactory; |
| import org.apache.axiom.om.OMAbstractFactory; |
| import org.apache.axiom.om.OMNamespace; |
| import org.apache.synapse.mediators.MediatorProperty; |
| import org.apache.synapse.SynapseConstants; |
| import org.apache.synapse.SynapseException; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import javax.xml.namespace.QName; |
| import java.util.Collection; |
| |
| /** |
| * A utility class for serializing instances of MediatorProperty objects by reading |
| * through a given XML configuration |
| * |
| * <pre> |
| * <element> |
| * <property name="string" (value="literal" | expression="xpath")/>* |
| * </element> |
| * </pre> |
| */ |
| public class MediatorPropertySerializer { |
| private static final Log log = LogFactory.getLog(MediatorPropertySerializer.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 PROP_Q |
| = new QName(XMLConfigConstants.SYNAPSE_NAMESPACE, "property"); |
| |
| /** |
| * Serialize all the properties to the given paren element. For each and every |
| * property ther will be a seperate property element created inside the parent element. |
| * |
| * @param parent element to which property elements should be added |
| * @param props <code>Collection</code> of propertis |
| */ |
| public static void serializeMediatorProperties(OMElement parent, |
| Collection<MediatorProperty> props) { |
| serializeMediatorProperties(parent, props, PROP_Q); |
| } |
| |
| /** |
| * Serialize all the properties to the given paren element. For each and every |
| * property ther will be a seperate element with the given name created inside the |
| * parent element. |
| * |
| * @param parent element to which property elements should be added |
| * @param props <code>Collection</code> of propertis |
| * @param childElementName <code>QNmae</code> of the property element to be created |
| */ |
| public static void serializeMediatorProperties(OMElement parent, |
| Collection<MediatorProperty> props, |
| QName childElementName) { |
| for (MediatorProperty mp : props) { |
| serializeMediatorProperty(parent, mp, childElementName); |
| } |
| } |
| |
| /** |
| * Serialize the property to the given paren element. There will be a element created with |
| * the name property inside the parent element. |
| * |
| * @param parent element to which property elements should be added |
| * @param mp a property to be serialized |
| */ |
| public static void serializeMediatorProperty(OMElement parent, |
| MediatorProperty mp) { |
| serializeMediatorProperty(parent, mp, PROP_Q); |
| } |
| |
| /** |
| * Serialize the property to the given paren element. There will be a element created with |
| * given name inside the parent element. |
| * |
| * @param parent element to which property elements should be added |
| * @param mp a property to be serialized |
| * @param childElementName <code>QName</code> of the element to be created |
| */ |
| public static void serializeMediatorProperty(OMElement parent, |
| MediatorProperty mp, |
| QName childElementName) { |
| OMElement prop = fac.createOMElement(childElementName, parent); |
| if (mp.getName() != null) { |
| prop.addAttribute(fac.createOMAttribute("name", nullNS, mp.getName())); |
| } else { |
| String msg = "Mediator property name missing"; |
| log.error(msg); |
| throw new SynapseException(msg); |
| } |
| |
| if (mp.getValue() != null) { |
| prop.addAttribute(fac.createOMAttribute("value", nullNS, mp.getValue())); |
| |
| } else if (mp.getExpression() != null) { |
| SynapseXPathSerializer.serializeXPath(mp.getExpression(), prop, "expression"); |
| |
| } else { |
| String msg = "Mediator property must have a literal value or be an expression"; |
| log.error(msg); |
| throw new SynapseException(msg); |
| } |
| |
| if (mp.getScope() != null && !XMLConfigConstants.SCOPE_DEFAULT.equals(mp.getScope())) { |
| prop.addAttribute(fac.createOMAttribute("scope", nullNS, mp.getScope())); |
| } |
| } |
| } |