[Fix] Lock activities during execution!

li.strolch.service/src/main/java/li/strolch/execution/command/ExecuteActivityCommand.java

@@ -24,6 +24,7 @@ public class ExecuteActivityCommand extends ExecutionCommand {
 
 	@Override
 	public void doCommand() {
+		tx().lock(this.activity.getRootElement());
 		this.activity.accept(this);
 	}
 

li.strolch.service/src/main/java/li/strolch/execution/command/SetActionToErrorCommand.java

@@ -35,6 +35,7 @@ public class SetActionToErrorCommand extends ExecutionCommand {
 
 	@Override
 	public void doCommand() {
+		tx().lock(this.action.getRootElement());
 		ExecutionPolicy executionPolicy = getExecutionPolicy(this.action);
 		executionPolicy.toError(this.action);
 	}

li.strolch.service/src/main/java/li/strolch/execution/command/SetActionToExecutedCommand.java

@@ -35,6 +35,7 @@ public class SetActionToExecutedCommand extends ExecutionCommand {
 
 	@Override
 	public void doCommand() {
+		tx().lock(this.action.getRootElement());
 		ExecutionPolicy executionPolicy = getExecutionPolicy(this.action);
 		executionPolicy.toExecuted(this.action);
 	}

li.strolch.service/src/main/java/li/strolch/execution/command/SetActionToStoppedCommand.java

@@ -35,6 +35,7 @@ public class SetActionToStoppedCommand extends ExecutionCommand {
 
 	@Override
 	public void doCommand() {
+		tx().lock(this.action.getRootElement());
 		ExecutionPolicy executionPolicy = getExecutionPolicy(this.action);
 		executionPolicy.toStopped(this.action);
 	}

li.strolch.service/src/main/java/li/strolch/execution/command/SetActionToWarningCommand.java

@@ -35,6 +35,7 @@ public class SetActionToWarningCommand extends ExecutionCommand {
 
 	@Override
 	public void doCommand() {
+		tx().lock(this.action.getRootElement());
 		ExecutionPolicy executionPolicy = getExecutionPolicy(this.action);
 		executionPolicy.toWarning(this.action);
 	}

li.strolch.service/src/main/java/li/strolch/execution/policy/SimpleExecution.java

@@ -8,7 +8,8 @@ import li.strolch.persistence.api.StrolchTransaction;
 
 /**
  * <p>
- * Simple Execution Policy which sets the state of the action depending on the method called.
+ * Simple Execution Policy which sets the state of the action depending on the
+ * method called.
  * </p>
  * 
  * @author Robert von Burg <eitch@eitchnet.ch>
@@ -42,7 +43,6 @@ public class SimpleExecution extends ExecutionPolicy {
 	}
 
 	protected void setActionState(Action action, State state) {
-		tx().lock(action.getRootElement());
 
 		action.setState(state);