ODE-990: added a message coutner to the task

git-svn-id: https://svn.apache.org/repos/asf/ode/trunk@1437341 13f79535-47bb-0310-9956-ffa450edef68

scheduler-simple/src/main/java/org/apache/ode/scheduler/simple/JobComparatorByDate.java

diff --git a/scheduler-simple/src/main/java/org/apache/ode/scheduler/simple/JobComparatorByDate.java b/scheduler-simple/src/main/java/org/apache/ode/scheduler/simple/JobComparatorByDate.java
index 83167f2..ccf32e1 100644
--- a/scheduler-simple/src/main/java/org/apache/ode/scheduler/simple/JobComparatorByDate.java
+++ b/scheduler-simple/src/main/java/org/apache/ode/scheduler/simple/JobComparatorByDate.java
@@ -32,7 +32,7 @@
         long diff = o1.schedDate - o2.schedDate;
         if (diff < 0) return -1;
         if (diff > 0) return 1;
-        return 0;
+        return o1.taskSeqNum < o2.taskSeqNum ? -1 : 1;
     }
 
 }

scheduler-simple/src/main/java/org/apache/ode/scheduler/simple/Task.java

diff --git a/scheduler-simple/src/main/java/org/apache/ode/scheduler/simple/Task.java b/scheduler-simple/src/main/java/org/apache/ode/scheduler/simple/Task.java
index 217b788..1f391ea 100644
--- a/scheduler-simple/src/main/java/org/apache/ode/scheduler/simple/Task.java
+++ b/scheduler-simple/src/main/java/org/apache/ode/scheduler/simple/Task.java
@@ -19,6 +19,8 @@
 
 package org.apache.ode.scheduler.simple;
 
+import java.util.concurrent.atomic.AtomicLong;
+
 /**
  * The thing that we schedule.
  *
@@ -28,8 +30,11 @@
 class Task {
     /** Scheduled date/time. */
     public long schedDate;
+    public long taskSeqNum;
+    private static final AtomicLong counter = new AtomicLong();
 
     Task(long schedDate) {
         this.schedDate = schedDate;
+        this.taskSeqNum = counter.incrementAndGet();
     }
 }