Separate out RootModificationApplyOperation

[yangtools.git] / yang / yang-data-impl / src / main / java / org / opendaylight / yangtools / yang / data / impl / schema / tree / AlwaysFailOperation.java

diff --git a/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/tree/AlwaysFailOperation.java b/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/tree/AlwaysFailOperation.java
index 5d1152caf849f6b225a924c39bfe49918ec299cc..18dae27279527613666fc1799a52fd0d292faea0 100644 (file)
--- a/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/tree/AlwaysFailOperation.java
+++ b/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/tree/AlwaysFailOperation.java
@@ -1,37 +1,46 @@
+/*
+ * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
 package org.opendaylight.yangtools.yang.data.impl.schema.tree;
 
-
-import com.google.common.base.Optional;
-import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
-import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.PathArgument;
+import java.util.Optional;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataValidationFailedException;
 import org.opendaylight.yangtools.yang.data.api.schema.tree.spi.TreeNode;
 import org.opendaylight.yangtools.yang.data.api.schema.tree.spi.Version;
 
 /**
- * An implementation of apply operation which fails to do anything,
- * consistently. An instance of this class is used by the data tree
- * if it does not have a SchemaContext attached and hence cannot
- * perform anything meaningful.
+ * An implementation of apply operation which fails to do anything, consistently. An instance of this class is used by
+ * the data tree if it does not have a SchemaContext attached and hence cannot perform anything meaningful.
  */
-final class AlwaysFailOperation implements ModificationApplyOperation {
-    @Override
-    public Optional<TreeNode> apply(final ModifiedNode modification,
-            final Optional<TreeNode> storeMeta, final Version version) {
-        throw new IllegalStateException("Schema Context is not available.");
+final class AlwaysFailOperation extends NonApplyDelegatedModificationApplyOperation {
+    static final ModificationApplyOperation INSTANCE = new AlwaysFailOperation();
+
+    private AlwaysFailOperation() {
+
     }
 
     @Override
-    public void checkApplicable(final InstanceIdentifier path,final NodeModification modification, final Optional<TreeNode> storeMetadata) {
-        throw new IllegalStateException("Schema Context is not available.");
+    ModificationApplyOperation delegate() {
+        throw ise();
     }
 
     @Override
-    public Optional<ModificationApplyOperation> getChild(final PathArgument child) {
-        throw new IllegalStateException("Schema Context is not available.");
+    Optional<TreeNode> apply(final ModifiedNode modification, final Optional<TreeNode> currentMeta,
+            final Version version) {
+        throw ise();
     }
 
     @Override
-    public void verifyStructure(final ModifiedNode modification) {
-        throw new IllegalStateException("Schema Context is not available.");
+    void checkApplicable(final ModificationPath path, final NodeModification modification,
+            final Optional<TreeNode> current, final Version version) throws DataValidationFailedException {
+        throw ise();
+    }
+
+    private static IllegalStateException ise() {
+        return new IllegalStateException("Schema Context is not available.");
     }
-}
\ No newline at end of file
+}