Workaround for MVEL issue

jbpm-human-task/src/main/java/org/jbpm/task/service/TaskService.java

@@ -20,6 +20,7 @@
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.Reader;
+import java.io.Serializable;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -64,8 +65,8 @@
 import org.jbpm.task.query.DeadlineSummary;
 import org.jbpm.task.query.TaskSummary;
 import org.mvel2.MVEL;
+import org.mvel2.ParserConfiguration;
 import org.mvel2.ParserContext;
-import org.mvel2.compiler.ExpressionCompiler;
 
 public class TaskService {
     EntityManagerFactory emf;
@@ -269,16 +270,17 @@ public static Map<String, Class> getInputs() {
 
     public Object eval(String str,
                        Map vars) {
-        ExpressionCompiler compiler = new ExpressionCompiler(str.trim());
-
-        ParserContext context = new ParserContext();
-        context.addPackageImport("org.jbpm.task");
-        context.addPackageImport("org.jbpm.task.service");
-        context.addPackageImport("org.jbpm.task.query");
-        context.addPackageImport("java.util");
-
-        return MVEL.executeExpression(compiler.compile(context),
-                vars);
+    	ParserConfiguration pconf = new ParserConfiguration();
+    	pconf.addPackageImport("org.jbpm.task");
+    	pconf.addPackageImport("org.jbpm.task.service");
+    	pconf.addPackageImport("org.jbpm.task.query");
+    	pconf.addPackageImport("java.util");
+    	for(String entry : getInputs().keySet()){
+    		pconf.addImport(entry, getInputs().get(entry));
+        }
+    	ParserContext context = new ParserContext(pconf);
+        Serializable s = MVEL.compileExpression(str.trim(), context);
+        return MVEL.executeExpression(s, vars);
     }
 
     public static class ScheduledTaskDeadline

pom.xml

@@ -63,7 +63,7 @@
         <updatePolicy>never</updatePolicy>
       </releases>
       <snapshots>
-        <enabled>false</enabled>
+        <enabled>true</enabled>
       </snapshots>
     </repository>
     <repository>