| /* |
| * 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.OMAttribute; |
| import org.apache.axiom.om.OMElement; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.synapse.SynapseException; |
| import org.apache.synapse.mediators.MediatorProperty; |
| import org.jaxen.JaxenException; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| /** |
| * A utility class capable of creating instances of MediatorProperty objects by reading |
| * through a given XML configuration |
| * |
| * <pre> |
| * <element> |
| * <property name="string" (value="literal" | expression="xpath")/>* |
| * </element> |
| * </pre> |
| */ |
| public class MediatorPropertyFactory { |
| |
| private static final Log log = LogFactory.getLog(MediatorPropertyFactory.class); |
| |
| public static List<MediatorProperty> getMediatorProperties(OMElement elem) { |
| |
| List<MediatorProperty> propertyList = new ArrayList<MediatorProperty>(); |
| |
| Iterator iter = elem.getChildrenWithName(MediatorProperty.PROPERTY_Q); |
| |
| while (iter.hasNext()) { |
| |
| OMElement propEle = (OMElement) iter.next(); |
| OMAttribute attName = propEle.getAttribute(MediatorProperty.ATT_NAME_Q); |
| OMAttribute attValue = propEle.getAttribute(MediatorProperty.ATT_VALUE_Q); |
| OMAttribute attExpr = propEle.getAttribute(MediatorProperty.ATT_EXPR_Q); |
| OMAttribute attScope = propEle.getAttribute(MediatorProperty.ATT_SCOPE_Q); |
| |
| MediatorProperty prop = new MediatorProperty(); |
| |
| if (attName == null || attName.getAttributeValue() == null || |
| attName.getAttributeValue().trim().length() == 0) { |
| String msg = "Entry name is a required attribute for a Log property"; |
| log.error(msg); |
| throw new SynapseException(msg); |
| } else { |
| prop.setName(attName.getAttributeValue()); |
| } |
| |
| // if a value is specified, use it, else look for an expression |
| if (attValue != null) { |
| |
| if (attValue.getAttributeValue() == null || |
| attValue.getAttributeValue().trim().length() == 0) { |
| |
| String msg = "Entry attribute value (if specified) " + |
| "is required for a Log property"; |
| log.error(msg); |
| throw new SynapseException(msg); |
| |
| } else { |
| prop.setValue(attValue.getAttributeValue()); |
| } |
| |
| } else if (attExpr != null) { |
| |
| if (attExpr.getAttributeValue() == null || |
| attExpr.getAttributeValue().trim().length() == 0) { |
| |
| String msg = "Entry attribute expression (if specified) " + |
| "is required for a mediator property"; |
| log.error(msg); |
| throw new SynapseException(msg); |
| |
| } else { |
| try { |
| prop.setExpression(SynapseXPathFactory.getSynapseXPath( |
| propEle, MediatorProperty.ATT_EXPR_Q)); |
| |
| } catch (JaxenException e) { |
| String msg = "Invalid XPapth expression : " + attExpr.getAttributeValue(); |
| log.error(msg); |
| throw new SynapseException(msg, e); |
| } |
| } |
| |
| } else { |
| String msg = "Entry attribute value OR expression must " + |
| "be specified for a mediator property"; |
| log.error(msg); |
| throw new SynapseException(msg); |
| } |
| |
| if (attScope != null) { |
| String valueStr = attScope.getAttributeValue(); |
| if (!XMLConfigConstants.SCOPE_AXIS2.equals(valueStr) && |
| !XMLConfigConstants.SCOPE_TRANSPORT.equals(valueStr) && |
| !XMLConfigConstants.SCOPE_DEFAULT.equals(valueStr) && |
| !XMLConfigConstants.SCOPE_CLIENT.equals(valueStr)) { |
| String msg = "Only '" + XMLConfigConstants.SCOPE_AXIS2 + "' or '" + |
| XMLConfigConstants.SCOPE_TRANSPORT + "' or '" + |
| XMLConfigConstants.SCOPE_CLIENT + |
| "' values are allowed for attribute scope for a property" + |
| ", Unsupported scope " + valueStr; |
| log.error(msg); |
| throw new SynapseException(msg); |
| } |
| prop.setScope(valueStr); |
| } |
| |
| propertyList.add(prop); |
| } |
| |
| return propertyList; |
| } |
| } |