Refactor change: Moved all distributed primitive implementation classes into onos-core-primitives bundle

Change-Id: Icd5dbd4133cb2f21bd403bcd598e6012813e6bfd
diff --git a/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/DefaultTransactionContextBuilder.java b/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/DefaultTransactionContextBuilder.java
new file mode 100644
index 0000000..36b2831
--- /dev/null
+++ b/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/DefaultTransactionContextBuilder.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.store.primitives.impl;
+
+import org.onosproject.store.service.TransactionContext;
+import org.onosproject.store.service.TransactionContextBuilder;
+
+/**
+ * The default implementation of a transaction context builder. This builder
+ * generates a {@link DefaultTransactionContext}.
+ */
+public class DefaultTransactionContextBuilder implements TransactionContextBuilder {
+
+    private boolean partitionsEnabled = true;
+    private final DatabaseManager manager;
+    private final long transactionId;
+
+    public DefaultTransactionContextBuilder(DatabaseManager manager, long transactionId) {
+        this.manager = manager;
+        this.transactionId = transactionId;
+    }
+
+    @Override
+    public TransactionContextBuilder withPartitionsDisabled() {
+        partitionsEnabled = false;
+        return this;
+    }
+
+    @Override
+    public TransactionContext build() {
+        return new DefaultTransactionContext(
+                transactionId,
+                partitionsEnabled ? manager.partitionedDatabase : manager.inMemoryDatabase,
+                () -> partitionsEnabled ? manager.consistentMapBuilder()
+                                        : manager.consistentMapBuilder().withPartitionsDisabled());
+    }
+}