| /** |
| * 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.oodt.cas.workflow.structs; |
| |
| //JDK imports |
| import java.util.Set; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| //OODT imports |
| import org.apache.oodt.cas.metadata.Metadata; |
| import org.apache.oodt.cas.workflow.structs.exceptions.WorkflowTaskInstanceException; |
| import org.apache.oodt.cas.workflow.util.GenericWorkflowObjectFactory; |
| |
| /** |
| * |
| * This is a {@link WorkflowTaskInstance} that is able to run a |
| * {@link WorkflowConditionInstance}, identified by the provided task config |
| * property name "ConditionClassName". If the run of the |
| * {@link WorkflowConditionInstance} does not return true, then a |
| * {@link WorkflowTaskInstanceException} is thrown. Note, this exception is also |
| * thrown if there is an error with the provided ConditionClassName, or if it's |
| * not provided. |
| * |
| * If the underlying {@link WorkflowConditionInstance} returns true, then this |
| * task completes successfully, and does not throw any Exceptions. |
| * |
| * @author mattmann |
| * @version $Revision$ |
| * |
| */ |
| public class ConditionTaskInstance implements WorkflowTaskInstance { |
| |
| private static final Logger LOG = Logger |
| .getLogger(ConditionTaskInstance.class.getName()); |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.apache.oodt.cas.workflow.structs.WorkflowTaskInstance#run(org.apache |
| * .oodt.cas.metadata.Metadata, |
| * org.apache.oodt.cas.workflow.structs.WorkflowTaskConfiguration) |
| */ |
| @Override |
| public void run(Metadata metadata, WorkflowTaskConfiguration config) |
| throws WorkflowTaskInstanceException { |
| String conditionClassName = config.getProperty("ConditionClassName"); |
| if (conditionClassName == null |
| || (conditionClassName != null && conditionClassName.equals(""))) { |
| throw new WorkflowTaskInstanceException( |
| "Condition class name is null or " + "unreadable: [" |
| + conditionClassName + "]: unable to run ConditionTaskInstance!"); |
| } |
| |
| LOG.log(Level.INFO, "ConditionTaskInstance: evaluating condition: [" |
| + conditionClassName + "]"); |
| WorkflowConditionInstance cond = GenericWorkflowObjectFactory |
| .getConditionObjectFromClassName(conditionClassName); |
| WorkflowConditionConfiguration condConfig = fromWorkflowTaskConfig(config); |
| if (!cond.evaluate(metadata, condConfig)) { |
| throw new WorkflowTaskInstanceException("Condition: [" |
| + conditionClassName + "] failed!"); |
| } |
| |
| } |
| |
| private WorkflowConditionConfiguration fromWorkflowTaskConfig( |
| WorkflowTaskConfiguration config) { |
| WorkflowConditionConfiguration cfg = new WorkflowConditionConfiguration(); |
| for (String propName : (Set<String>) (Set<?>) config.getProperties() |
| .keySet()) { |
| if (!propName.equals("ConditionClassName")) { |
| cfg.addConfigProperty(propName, config.getProperty(propName)); |
| } |
| } |
| |
| return cfg; |
| } |
| |
| } |