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OPEN - issue ODE-160: ExtensionActivity and ExtensionAssignOperation:…
… Runtime support http://issues.apache.org/jira/browse/ODE-160 git-svn-id: https://svn.apache.org/repos/asf/ode/trunk@582679 13f79535-47bb-0310-9956-ffa450edef68
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bpel-api/src/main/java/org/apache/ode/bpel/eapi/AbstractExtensionBundle.java
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| /* | ||
| * 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; | ||
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| import java.util.Collections; | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
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| /** | ||
| * Abstract class that bundles and registers <code><extensionActivity></code> and | ||
| * <code><extensionAssignOperation></code> implementations related to a particular namespace. | ||
| * | ||
| * @author Tammo van Lessen (University of Stuttgart) | ||
| */ | ||
| public abstract class AbstractExtensionBundle { | ||
| private Map<String, Class<? extends ExtensionOperation>> extensionsByName = new HashMap<String, Class<? extends ExtensionOperation>>(); | ||
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| /** | ||
| * Returns the extension namespace this bundle provides implementations for. | ||
| * @return | ||
| */ | ||
| public abstract String getNamespaceURI(); | ||
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| /** | ||
| * Register extension operations. | ||
| */ | ||
| public abstract void registerExtensionActivities(); | ||
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| /** | ||
| * Register an {@link ExtensionOperation} implementation as <code><extensionActivity></code>. | ||
| * | ||
| * @param localName | ||
| * @param activity | ||
| */ | ||
| protected final void registerExtensionOperation(String localName, Class<? extends ExtensionOperation> operation) { | ||
| extensionsByName.put(localName, operation); | ||
| } | ||
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| /** | ||
| * Returns a list of the local names of registered extension operations. | ||
| */ | ||
| public final Set<String> getExtensionOperationNames() { | ||
| return Collections.unmodifiableSet(extensionsByName.keySet()); | ||
| } | ||
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| public final Class<? extends ExtensionOperation> getExtensionOperationClass(String localName) { | ||
| return extensionsByName.get(localName); | ||
| } | ||
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| public final ExtensionOperation getExtensionOperationInstance(String localName) throws InstantiationException, IllegalAccessException { | ||
| return getExtensionOperationClass(localName).newInstance(); | ||
| } | ||
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| } |
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bpel-api/src/main/java/org/apache/ode/bpel/eapi/ExtensionContext.java
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| /* | ||
| * 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; | ||
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| import java.util.List; | ||
| import java.util.Map; | ||
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| import org.apache.ode.bpel.common.FaultException; | ||
| import org.apache.ode.bpel.o.OLink; | ||
| import org.apache.ode.bpel.o.OProcess; | ||
| import org.apache.ode.bpel.o.OScope; | ||
| import org.w3c.dom.Node; | ||
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| /** | ||
| * 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 { | ||
|
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| /** | ||
| * 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; | ||
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| /** | ||
| * Returns a list of links. | ||
| * | ||
| * @return an unmodifiable list of visible variables. | ||
| * @throws FaultException | ||
| */ | ||
| List<OLink> getLinks() throws FaultException; | ||
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| /** | ||
| * 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; | ||
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| /** | ||
| * 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; | ||
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| /** | ||
| * 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; | ||
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| /** | ||
| * 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; | ||
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| /** | ||
| * 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; | ||
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| /** | ||
| * 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; | ||
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| /** | ||
| * Reads the current process instance id. | ||
| * @return instance id | ||
| */ | ||
| Long getProcessId(); | ||
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| } |
39 changes: 39 additions & 0 deletions
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bpel-api/src/main/java/org/apache/ode/bpel/eapi/ExtensionOperation.java
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|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| /* | ||
| * 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; | ||
|
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| import org.apache.ode.bpel.common.FaultException; | ||
| import org.apache.ode.utils.SerializableElement; | ||
|
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| /** | ||
| * This is the basis interface for implementations of | ||
| * <code><extensionAssignOperation></code> and <code><extensionActivity></code> | ||
| * nodes. | ||
| * | ||
| * Implementations of this interface must provide a default constructor as they are created | ||
| * using reflection. | ||
| * | ||
| * @see AbstractExtensionBundle | ||
| * | ||
| * @author Tammo van Lessen (University of Stuttgart) | ||
| */ | ||
| public interface ExtensionOperation { | ||
|
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| void run(ExtensionContext context, SerializableElement element) throws FaultException; | ||
| } |
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