ALF-9693: Converted processes for WQS and Social publishing (Activiti)

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@29658 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/workflow/activiti/listener/ConvertDateToISO8601.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2005-2011 Alfresco Software Limited.
+ *
+ * This file is part of Alfresco
+ *
+ * Alfresco is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Alfresco is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.alfresco.repo.workflow.activiti.listener;
+
+import java.util.Date;
+
+import org.activiti.engine.delegate.DelegateExecution;
+import org.activiti.engine.delegate.ExecutionListener;
+import org.activiti.engine.delegate.Expression;
+import org.activiti.engine.delegate.VariableScope;
+import org.alfresco.util.ISO8601DateFormat;
+
+/**
+ * An {@link ExecutionListener} that converts a variable of type date to a ISO-8601 date.
+ * The variable that should be converted can be set using field "source", the output string
+ * will be written in field configured in "target".
+ *
+ * @author Frederik Heremans
+ */
+public class ConvertDateToISO8601 implements ExecutionListener
+{
+
+    protected Expression source;
+    protected Expression target;
+    
+    public void setSource(Expression source)
+    {
+        this.source = source;
+    }
+    
+    public void setTarget(Expression target)
+    {
+        this.target = target;
+    }    
+    
+    @Override
+    public void notify(DelegateExecution execution) throws Exception
+    {
+        String sourceVarName = getExpressionString(source, execution);
+        String targetVarName = getExpressionString(target, execution);
+        
+        if(sourceVarName == null || targetVarName == null) 
+        {
+            throw new IllegalArgumentException("Both fields 'source' and 'target' shoudl be set");
+        }
+        
+        Date dateToConvert = (Date) execution.getVariable(sourceVarName);
+        if(dateToConvert != null) {
+            // Convert the date to ISO-8601 format
+            String convertedDate = ISO8601DateFormat.format(dateToConvert);
+            execution.setVariable(targetVarName, convertedDate);
+        }
+    }
+    
+    protected String getExpressionString(Expression expression, VariableScope variableScope) 
+    {
+        if(expression != null) 
+        {
+            return (String) expression.getValue(variableScope);
+        }
+        return null;
+    }
+}