Creating new creators for multimap primitive and a name based getter for treemap primitive.

Change-Id: I981b3f1f8ee01fbdd0677c3eedc3d5024b8bcf1e
diff --git a/core/api/src/main/java/org/onosproject/store/service/ConsistentMultimapBuilder.java b/core/api/src/main/java/org/onosproject/store/service/ConsistentMultimapBuilder.java
new file mode 100644
index 0000000..1881d795
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+++ b/core/api/src/main/java/org/onosproject/store/service/ConsistentMultimapBuilder.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2016 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.service;
+
+import org.onosproject.store.primitives.DistributedPrimitiveBuilder;
+
+/**
+ * A builder class for {@code AsyncConsistentMultimap}.
+ */
+public abstract class ConsistentMultimapBuilder<K, V>
+        extends DistributedPrimitiveBuilder<ConsistentMultimapBuilder<K, V>,
+        ConsistentMultimap<K, V>> {
+
+    private boolean purgeOnUninstall = false;
+
+    public ConsistentMultimapBuilder() {
+        super(DistributedPrimitive.Type.CONSISTENT_MULTIMAP);
+    }
+
+    /**
+     * Clears multimap contents when the owning application is uninstalled.
+     *
+     * @return this builder
+     */
+    public ConsistentMultimapBuilder<K, V> withPurgeOnUninstall() {
+        purgeOnUninstall = true;
+        return this;
+    }
+
+    /**
+     * Returns if multimap entries need to be cleared when owning application
+     * is uninstalled.
+     *
+     * @return true if items are to be cleared on uninstall
+     */
+    public boolean purgeOnUninstall() {
+        return purgeOnUninstall;
+    }
+
+    /**
+     * Builds the distributed multimap based on the configuration options
+     * supplied to this builder.
+     *
+     * @return new distributed multimap
+     * @throws java.lang.RuntimeException if a mandatory parameter is missing
+     */
+    public abstract AsyncConsistentMultimap<K, V> buildMultimap();
+}