| /* |
| * 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.ode.bpel.eapi; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.ode.bpel.common.FaultException; |
| import org.apache.ode.bpel.obj.OLink; |
| import org.apache.ode.bpel.obj.OProcess; |
| import org.apache.ode.bpel.obj.OScope; |
| import org.w3c.dom.Node; |
| |
| |
| /** |
| * Context for executing extension activities or extension assign operations. |
| * Implementations of the {@link ExtensionOperation} class use this interface to access BPEL |
| * variables, property sets and link status. |
| * |
| * @author Tammo van Lessen (University of Stuttgart) |
| */ |
| public interface ExtensionContext { |
| |
| /** |
| * Returns a list of variables visible in the current scope. |
| * |
| * @return an unmodifiable list of visible variables. |
| * @throws FaultException |
| */ |
| Map<String, OScope.Variable> getVisibleVariables() throws FaultException; |
| |
| /** |
| * Returns a list of links. |
| * |
| * @return an unmodifiable list of visible variables. |
| * @throws FaultException |
| */ |
| List<OLink> getLinks() throws FaultException; |
| |
| /** |
| * Read the value of a BPEL variable. |
| * |
| * @param variable |
| * variable to read |
| * @param part |
| * the part (or <code>null</code>) |
| * @return the value of the variable, wrapped in a <code>Node</code> |
| */ |
| Node readVariable(OScope.Variable variable) throws FaultException; |
| |
| /** |
| * Read the value of a BPEL variable. |
| * |
| * @param variableName |
| * variable to read |
| * @param part |
| * the part (or <code>null</code>) |
| * @return the value of the variable, wrapped in a <code>Node</code> |
| */ |
| Node readVariable(String variableName) throws FaultException; |
| |
| /** |
| * Write the value into a BPEL variable. |
| * |
| * @param variable |
| * variable to write |
| * @param value |
| * the value to be stored into the variable |
| * @return the value of the variable, wrapped in a <code>Node</code> |
| */ |
| void writeVariable(OScope.Variable variable, Node value) throws FaultException; |
| |
| /** |
| * Write the value into a BPEL variable. |
| * |
| * @param variableName |
| * variable to write |
| * @param value |
| * the value to be stored into the variable |
| * @return the value of the variable, wrapped in a <code>Node</code> |
| */ |
| void writeVariable(String variableName, Node value) throws FaultException; |
| |
| /** |
| * Read the value of a BPEL property. |
| * |
| * @param variable |
| * variable containing property |
| * @param property |
| * property to read |
| * @return value of the property |
| */ |
| String readMessageProperty(OScope.Variable variable, OProcess.OProperty property) |
| throws FaultException; |
| |
| /** |
| * Obtain the status of a control link. |
| * |
| * @param olink |
| * link to check |
| * @return <code>true</code> if the link is active, <code>false</code> |
| * otherwise. |
| */ |
| boolean isLinkActive(OLink olink) throws FaultException; |
| |
| /** |
| * Reads the current process instance id. |
| * @return instance id |
| */ |
| Long getProcessId(); |
| |
| } |