Add string attributes to self-containd objects.
- Add common super class to *Event classes, which handles attributes.
- Add string attributes to *Event classes (ONOS-1564)
- Populate string attributes.
Picked random attribute obtained from OF, just to initially populate attrs.
Attributes to be used for each elements should be revisited later.
- *Impl class to use/reference self-contained objects
prep-work for snapshot in mind.
- unified equals implementations
- Add unfrozen Copy constructor.
- Add freeze check to fixed attributes.
- Remove get*Impl which was not really adding value.
Change-Id: I10f9538f87d133a22237bd8ab97b8de421d3930b
diff --git a/src/main/java/net/onrc/onos/core/topology/TopologyObject.java b/src/main/java/net/onrc/onos/core/topology/TopologyObject.java
index cdf51bd..661f081 100644
--- a/src/main/java/net/onrc/onos/core/topology/TopologyObject.java
+++ b/src/main/java/net/onrc/onos/core/topology/TopologyObject.java
@@ -1,5 +1,7 @@
package net.onrc.onos.core.topology;
+import org.apache.commons.lang.Validate;
+
/**
@@ -18,6 +20,7 @@
* @param topology Topology instance this object belongs to
*/
protected TopologyObject(Topology topology) {
+ Validate.notNull(topology);
this.topology = topology;
}