Bug 500: Updated data APIs with new concepts.

[controller.git] / opendaylight / md-sal / sal-common-api / src / main / java / org / opendaylight / controller / md / sal / common / api / data / DataChangeListener.java

diff --git a/opendaylight/md-sal/sal-common-api/src/main/java/org/opendaylight/controller/md/sal/common/api/data/DataChangeListener.java b/opendaylight/md-sal/sal-common-api/src/main/java/org/opendaylight/controller/md/sal/common/api/data/DataChangeListener.java
index 8787a3fe8d82de85bc7e064177501e017d041cca..669baa8d9e96a6601bfe7cbe49cb99d2ffb00233 100644 (file)
--- a/opendaylight/md-sal/sal-common-api/src/main/java/org/opendaylight/controller/md/sal/common/api/data/DataChangeListener.java
+++ b/opendaylight/md-sal/sal-common-api/src/main/java/org/opendaylight/controller/md/sal/common/api/data/DataChangeListener.java
@@ -12,6 +12,12 @@ import java.util.EventListener;
 import org.opendaylight.yangtools.concepts.Path;
 
 public interface DataChangeListener<P extends Path<P>, D> extends EventListener {
-
+    /**
+     * Note that this method may be invoked from a shared thread pool, so
+     * implementations SHOULD NOT perform CPU-intensive operations and they
+     * definitely MUST NOT invoke any potentially blocking operations.
+     *
+     * @param change Data Change Event being delivered.
+     **/
     void onDataChanged(DataChangeEvent<P, D> change);
 }