--- /dev/null
+package org.opendaylight.controller.md.sal.common.impl.service;
+
+import java.util.Collections;
+import java.util.Map;
+import java.util.Set;
+
+import org.opendaylight.controller.md.sal.common.api.data.DataChangeEvent;
+
+public class InitialDataChangeEventImpl<P,D> implements DataChangeEvent<P, D> {
+
+ private final D originalOperationalTree;
+ private final D originalConfigurationTree;
+
+ public InitialDataChangeEventImpl(D configTree, D operTree) {
+ originalConfigurationTree = configTree;
+ originalOperationalTree = operTree;
+ }
+
+ @Override
+ public Map<P, D> getCreatedConfigurationData() {
+ return Collections.emptyMap();
+ }
+
+ @Override
+ public Map<P, D> getCreatedOperationalData() {
+ return Collections.emptyMap();
+ }
+
+ @Override
+ public Map<P, D> getOriginalConfigurationData() {
+ return Collections.emptyMap();
+ }
+ @Override
+ public Map<P, D> getOriginalOperationalData() {
+ return Collections.emptyMap();
+ }
+ @Override
+ public Set<P> getRemovedConfigurationData() {
+ return Collections.emptySet();
+ }
+ @Override
+ public Set<P> getRemovedOperationalData() {
+ return Collections.emptySet();
+ }
+ @Override
+ public Map<P, D> getUpdatedConfigurationData() {
+ return Collections.emptyMap();
+ }
+
+ @Override
+ public D getUpdatedConfigurationSubtree() {
+ return originalConfigurationTree;
+ }
+ @Override
+ public D getUpdatedOperationalSubtree() {
+ return originalOperationalTree;
+ }
+
+ @Override
+ public D getOriginalConfigurationSubtree() {
+ return originalConfigurationTree;
+ }
+
+ @Override
+ public D getOriginalOperationalSubtree() {
+ return originalOperationalTree;
+ }
+
+ @Override
+ public Map<P, D> getUpdatedOperationalData() {
+ return Collections.emptyMap();
+ }
+
+
+}