DeclaredStatements can contain default implementations

[yangtools.git] / yang / yang-model-api / src / main / java / org / opendaylight / yangtools / yang / model / api / stmt / ContainerStatement.java

diff --git a/yang/yang-model-api/src/main/java/org/opendaylight/yangtools/yang/model/api/stmt/ContainerStatement.java b/yang/yang-model-api/src/main/java/org/opendaylight/yangtools/yang/model/api/stmt/ContainerStatement.java
index be68439e4e5791ff94111d56ef7a3236c0afc00e..222a49d1fc68c90392c0b2b8335ee4713dad1972 100644 (file)
--- a/yang/yang-model-api/src/main/java/org/opendaylight/yangtools/yang/model/api/stmt/ContainerStatement.java
+++ b/yang/yang-model-api/src/main/java/org/opendaylight/yangtools/yang/model/api/stmt/ContainerStatement.java
@@ -7,12 +7,16 @@
  */
 package org.opendaylight.yangtools.yang.model.api.stmt;
 
+import java.util.Optional;
 import javax.annotation.Nullable;
 import org.opendaylight.yangtools.yang.common.QName;
 
-public interface ContainerStatement extends DataDefinitionStatement, DataDefinitionContainer.WithReusableDefinitions,
-        ActionStatementContainer, ConfigStatementContainerDeclaredStatement<QName>, NotificationStatementContainer,
-        MustStatementContainer {
-
-    @Nullable PresenceStatement getPresence();
+public interface ContainerStatement extends DataDefinitionStatement,
+        DataDefinitionAwareDeclaredStatement.WithReusableDefinitions<QName>,
+        ActionStatementAwareDeclaredStatement<QName>, ConfigStatementAwareDeclaredStatement<QName>,
+        NotificationStatementAwareDeclaredStatement<QName>, MustStatementAwareDeclaredStatement<QName> {
+    default @Nullable PresenceStatement getPresence() {
+        final Optional<PresenceStatement> opt = findFirstDeclaredSubstatement(PresenceStatement.class);
+        return opt.isPresent() ? opt.get() : null;
+    }
 }