Refactor TransactionContext.executeModification()

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / datastore / TransactionModificationOperation.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionModificationOperation.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionModificationOperation.java
new file mode 100644 (file)
index 0000000..9f7b008
--- /dev/null
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionModificationOperation.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2020 PANTHEON.tech, s.r.o. 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.controller.cluster.datastore;
+
+import static java.util.Objects.requireNonNull;
+
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+
+/**
+ * A TransactionOperation to apply a specific modification. Subclasses provide type capture of required data, so that
+ * we instantiate AbstractModification subclasses for the bare minimum time required.
+ */
+abstract class TransactionModificationOperation extends TransactionOperation {
+    private abstract static class AbstractDataOperation extends TransactionModificationOperation {
+        private final NormalizedNode<?, ?> data;
+
+        AbstractDataOperation(final YangInstanceIdentifier path, final NormalizedNode<?, ?> data) {
+            super(path);
+            this.data = requireNonNull(data);
+        }
+
+        final NormalizedNode<?, ?> data() {
+            return data;
+        }
+    }
+
+    static final class DeleteOperation extends TransactionModificationOperation {
+        DeleteOperation(final YangInstanceIdentifier path) {
+            super(path);
+        }
+
+        @Override
+        protected void invoke(final TransactionContext transactionContext, final Boolean havePermit) {
+            transactionContext.executeDelete(path(), havePermit);
+        }
+    }
+
+    static final class MergeOperation extends AbstractDataOperation {
+        MergeOperation(final YangInstanceIdentifier path, final NormalizedNode<?, ?> data) {
+            super(path, data);
+        }
+
+        @Override
+        protected void invoke(final TransactionContext transactionContext, final Boolean havePermit) {
+            transactionContext.executeMerge(path(), data(), havePermit);
+        }
+    }
+
+    static final class WriteOperation extends AbstractDataOperation {
+        WriteOperation(final YangInstanceIdentifier path, final NormalizedNode<?, ?> data) {
+            super(path, data);
+        }
+
+        @Override
+        protected void invoke(final TransactionContext transactionContext, final Boolean havePermit) {
+            transactionContext.executeWrite(path(), data(), havePermit);
+        }
+    }
+
+    private final YangInstanceIdentifier path;
+
+    TransactionModificationOperation(final YangInstanceIdentifier path) {
+        this.path = requireNonNull(path);
+    }
+
+    final YangInstanceIdentifier path() {
+        return path;
+    }
+}