diff --git a/apps/mappingmanagement/web/BUCK b/apps/mappingmanagement/web/BUCK
index 950441b..6794372 100644
--- a/apps/mappingmanagement/web/BUCK
+++ b/apps/mappingmanagement/web/BUCK
@@ -1,21 +1,21 @@
 COMPILE_DEPS = [
     '//lib:CORE_DEPS',
-    '//incubator/api:onos-incubator-api',
     '//utils/rest:onlab-rest',
     '//lib:javax.ws.rs-api',
     '//apps/mappingmanagement/api:onos-apps-mappingmanagement-api',
 ]
 
 TEST_DEPS = [
-    '//lib:TEST_ADAPTERS',
-    '//lib:jersey-test-framework-core',
-    '//lib:jersey-test-framework-jetty',
-    '//utils/osgi:onlab-osgi-tests',
+    '//lib:TEST_REST',
     '//web/api:onos-rest-tests',
-    '//incubator/api:onos-incubator-api-tests',
 ]
 
 osgi_jar_with_tests (
     deps = COMPILE_DEPS,
     test_deps = TEST_DEPS,
+    web_context = '/onos/mappingmanagement',
+    api_title = 'Mapping Management App API',
+    api_version = '1.0',
+    api_description = 'REST API for ONOS Mapping Management App',
+    api_package = 'org.onosproject.mapping.web',
 )
diff --git a/apps/mappingmanagement/web/pom.xml b/apps/mappingmanagement/web/pom.xml
index 106ef9b..bd5cc38 100644
--- a/apps/mappingmanagement/web/pom.xml
+++ b/apps/mappingmanagement/web/pom.xml
@@ -31,7 +31,7 @@
     <properties>
         <web.context>/onos/v1/mm</web.context>
         <api.version>1.0.0</api.version>
-        <api.title>ONOS LISP Mapping Management Application REST API</api.title>
+        <api.title>ONOS Mapping Management Application REST API</api.title>
         <api.description>
             APIs for interacting with the LISP Mapping Management application.
         </api.description>
@@ -78,7 +78,6 @@
             <scope>test</scope>
             <type>jar</type>
         </dependency>
-
         <dependency>
             <groupId>org.onosproject</groupId>
             <artifactId>onos-rest</artifactId>
@@ -86,12 +85,16 @@
             <classifier>tests</classifier>
             <scope>test</scope>
         </dependency>
-
         <dependency>
             <groupId>org.glassfish.jersey.test-framework</groupId>
             <artifactId>jersey-test-framework-core</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.glassfish.jersey.test-framework.providers</groupId>
+            <artifactId>jersey-test-framework-provider-jetty</artifactId>
+            <scope>test</scope>
+        </dependency>
 
     </dependencies>
     <build>
diff --git a/apps/mappingmanagement/web/src/main/java/org/onosproject/mapping/web/MappingWebResource.java b/apps/mappingmanagement/web/src/main/java/org/onosproject/mapping/web/MappingWebResource.java
deleted file mode 100644
index f1dfb4e..0000000
--- a/apps/mappingmanagement/web/src/main/java/org/onosproject/mapping/web/MappingWebResource.java
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * Copyright 2017-present 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.mapping.web;
-
-import org.onosproject.rest.AbstractWebResource;
-
-import javax.ws.rs.GET;
-import javax.ws.rs.Path;
-import javax.ws.rs.Produces;
-import javax.ws.rs.core.MediaType;
-import javax.ws.rs.core.Response;
-
-/**
- * LISP mapping REST API implementation.
- */
-@Path("mappings")
-public class MappingWebResource extends AbstractWebResource {
-
-    // FIXME: dummy method for generating swagger.json file
-    @GET
-    @Produces(MediaType.APPLICATION_JSON)
-    public Response getMappings() {
-        return null;
-    }
-}
diff --git a/apps/mappingmanagement/web/src/main/java/org/onosproject/mapping/web/MappingsWebApplication.java b/apps/mappingmanagement/web/src/main/java/org/onosproject/mapping/web/MappingsWebApplication.java
new file mode 100644
index 0000000..ec1c61a
--- /dev/null
+++ b/apps/mappingmanagement/web/src/main/java/org/onosproject/mapping/web/MappingsWebApplication.java
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2017-present 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.mapping.web;
+
+import org.onlab.rest.AbstractWebApplication;
+
+import java.util.Set;
+
+/**
+ * Mapping management REST APIs web application.
+ */
+public class MappingsWebApplication extends AbstractWebApplication {
+    @Override
+    public Set<Class<?>> getClasses() {
+        return getClasses(MappingsWebResource.class);
+    }
+}
diff --git a/apps/mappingmanagement/web/src/main/java/org/onosproject/mapping/web/MappingsWebResource.java b/apps/mappingmanagement/web/src/main/java/org/onosproject/mapping/web/MappingsWebResource.java
new file mode 100644
index 0000000..5c38390
--- /dev/null
+++ b/apps/mappingmanagement/web/src/main/java/org/onosproject/mapping/web/MappingsWebResource.java
@@ -0,0 +1,135 @@
+/*
+ * Copyright 2017-present 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.mapping.web;
+
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import org.onlab.util.ItemNotFoundException;
+import org.onosproject.mapping.MappingEntry;
+import org.onosproject.mapping.MappingService;
+import org.onosproject.mapping.MappingStore.Type;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.rest.AbstractWebResource;
+
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+
+/**
+ * ONOS mapping management REST API implementation.
+ */
+@Path("mappings")
+public class MappingsWebResource extends AbstractWebResource {
+
+    private static final String DEVICE_NOT_FOUND = "Device is not found";
+    private static final String TYPE_NOT_NULL = "Mapping store type should not be null";
+    private static final String TYPE_ILLEGAL = "Mapping store type is not correct";
+    private static final String MAPPINGS = "mappings";
+
+    private static final String DB = "db";
+    private static final String CACHE = "cache";
+
+    private final MappingService mappingService = get(MappingService.class);
+    private final DeviceService deviceService = get(DeviceService.class);
+    private final ObjectNode root = mapper().createObjectNode();
+    private final ArrayNode mappingsNode = root.putArray(MAPPINGS);
+
+    /**
+     * Gets all mapping entries. Returns array of all mappings in the system.
+     *
+     * @param type mapping store type
+     * @return 200 OK with a collection of mappings
+     *
+     * @onos.rsModel MappingEntries
+     */
+    @GET
+    @Produces(MediaType.APPLICATION_JSON)
+    @Path("{type}")
+    public Response getMappings(@PathParam("type") String type) {
+
+        final Iterable<MappingEntry> mappingEntries =
+                mappingService.getAllMappingEntries(getTypeEnum(type));
+
+        if (mappingEntries == null || !mappingEntries.iterator().hasNext()) {
+            return ok(root).build();
+        }
+
+        for (final MappingEntry entry : mappingEntries) {
+            mappingsNode.add(codec(MappingEntry.class).encode(entry, this));
+        }
+        return ok(root).build();
+    }
+
+    /**
+     * Gets mapping entries of a device. Returns array of all mappings for the
+     * specified device.
+     *
+     * @param deviceId device identifier
+     * @param type mapping store type
+     * @return 200 OK with a collection of mappings of given device
+     * @onos.rsModel MappingEntries
+     */
+    @GET
+    @Produces(MediaType.APPLICATION_JSON)
+    @Path("{deviceId}/{type}")
+    public Response getMappingsByDeviceId(@PathParam("deviceId") String deviceId,
+                                          @PathParam("type") String type) {
+        Device device = deviceService.getDevice(DeviceId.deviceId(deviceId));
+
+        if (device == null) {
+            throw new ItemNotFoundException(DEVICE_NOT_FOUND);
+        }
+
+        final Iterable<MappingEntry> mappingEntries =
+                mappingService.getMappingEntries(getTypeEnum(type), device.id());
+        if (mappingEntries == null || !mappingEntries.iterator().hasNext()) {
+            return ok(root).build();
+        }
+
+        for (final MappingEntry entry : mappingEntries) {
+            mappingsNode.add(codec(MappingEntry.class).encode(entry, this));
+        }
+        return ok(root).build();
+    }
+
+    /**
+     * Returns corresponding type enumeration based on the given
+     * string formatted type.
+     *
+     * @param type string formatted type
+     * @return type enumeration
+     */
+    private Type getTypeEnum(String type) {
+
+        if (type == null) {
+            throw new IllegalArgumentException(TYPE_NOT_NULL);
+        }
+
+        switch (type) {
+            case DB:
+                return Type.MAP_DATABASE;
+            case CACHE:
+                return Type.MAP_CACHE;
+            default:
+                throw new IllegalArgumentException(TYPE_ILLEGAL);
+        }
+    }
+}
diff --git a/apps/mappingmanagement/web/src/main/resources/definitions/MappingEntries.json b/apps/mappingmanagement/web/src/main/resources/definitions/MappingEntries.json
new file mode 100644
index 0000000..3395876
--- /dev/null
+++ b/apps/mappingmanagement/web/src/main/resources/definitions/MappingEntries.json
@@ -0,0 +1,143 @@
+{
+  "type": "object",
+  "title": "mappings",
+  "required": [
+    "mappings"
+  ],
+  "properties": {
+    "mappings": {
+      "type": "array",
+      "xml": {
+        "name": "mappings",
+        "wrapped": true
+      },
+      "items": {
+        "type": "object",
+        "title": "mapping",
+        "required": [
+          "id",
+          "state",
+          "deviceId",
+          "key",
+          "value"
+        ],
+        "properties": {
+          "id": {
+            "type": "string",
+            "example": "12103425214920339"
+          },
+          "state": {
+            "type": "string",
+            "example": "ADDED"
+          },
+          "deviceId": {
+            "type": "string",
+            "example": "lisp:1.2.3.4"
+          },
+          "key": {
+            "type": "object",
+            "title": "key",
+            "required": [
+              "address"
+            ],
+            "properties": {
+              "address": {
+                "type": "object",
+                "title": "address",
+                "required": [
+                  "addrType",
+                  "typeValue"
+                ],
+                "properties": {
+                  "addrType": {
+                    "type": "string",
+                    "example": "IPV4"
+                  },
+                  "typeValue": {
+                    "type": "string",
+                    "example": "1.2.3.4"
+                  }
+                }
+              }
+            }
+          },
+          "value": {
+            "type": "object",
+            "title": "value",
+            "required": [
+              "action",
+              "treatments"
+            ],
+            "properties": {
+              "action": {
+                "type": "string",
+                "example": "FORWARD"
+              },
+              "treatments": {
+                "type": "array",
+                "xml": {
+                  "name": "treatments",
+                  "wrapped": true
+                },
+                "items": {
+                  "type": "object",
+                  "title": "treatment",
+                  "required": [
+                    "address",
+                    "instructions"
+                  ],
+                  "properties": {
+                    "address": {
+                      "type": "object",
+                      "title": "address",
+                      "required": [
+                        "addrType",
+                        "typeValue"
+                      ],
+                      "properties": {
+                        "addrType": {
+                          "type": "string",
+                          "example": "IPV4"
+                        },
+                        "typeValue": {
+                          "type": "string",
+                          "example": "1.2.3.4"
+                        }
+                      }
+                    },
+                    "instructions": {
+                      "type": "array",
+                      "xml": {
+                        "name": "instructions",
+                        "wrapped": true
+                      },
+                      "items": {
+                        "type": "object",
+                        "title": "instruction",
+                        "required": [
+                          "instType",
+                          "value"
+                        ],
+                        "properties": {
+                          "instType": {
+                            "type": "string",
+                            "example": "WEIGHT"
+                          },
+                          "value": {
+                            "type": "int32",
+                            "format": "int32",
+                            "example": 1
+                          }
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/apps/mappingmanagement/web/src/main/webapp/WEB-INF/web.xml b/apps/mappingmanagement/web/src/main/webapp/WEB-INF/web.xml
index 680c725..6b3a65c 100644
--- a/apps/mappingmanagement/web/src/main/webapp/WEB-INF/web.xml
+++ b/apps/mappingmanagement/web/src/main/webapp/WEB-INF/web.xml
@@ -18,21 +18,40 @@
          xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
          xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
          id="ONOS" version="2.5">
-    <display-name>LISP Mapping REST API v1.0</display-name>
+    <display-name>Mapping Management REST API v1.0</display-name>
+
+    <security-constraint>
+        <web-resource-collection>
+            <web-resource-name>Secured</web-resource-name>
+            <url-pattern>/*</url-pattern>
+        </web-resource-collection>
+        <auth-constraint>
+            <role-name>admin</role-name>
+        </auth-constraint>
+    </security-constraint>
+
+    <security-role>
+        <role-name>admin</role-name>
+    </security-role>
+
+    <login-config>
+        <auth-method>BASIC</auth-method>
+        <realm-name>karaf</realm-name>
+    </login-config>
 
     <servlet>
         <servlet-name>JAX-RS Service</servlet-name>
         <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
         <init-param>
-            <param-name>jersey.config.server.provider.classnames</param-name>
-            <param-value>
-                org.onosproject.mapping.web.MappingWebResource</param-value>
+            <param-name>javax.ws.rs.Application</param-name>
+            <param-value>org.onosproject.mapping.web.MappingsWebApplication</param-value>
         </init-param>
-        <load-on-startup>10</load-on-startup>
+        <load-on-startup>1</load-on-startup>
     </servlet>
 
     <servlet-mapping>
         <servlet-name>JAX-RS Service</servlet-name>
         <url-pattern>/*</url-pattern>
     </servlet-mapping>
+
 </web-app>
diff --git a/apps/mappingmanagement/web/src/test/java/org/onosproject/mapping/web/MappingsWebResourceTest.java b/apps/mappingmanagement/web/src/test/java/org/onosproject/mapping/web/MappingsWebResourceTest.java
new file mode 100644
index 0000000..79290d3
--- /dev/null
+++ b/apps/mappingmanagement/web/src/test/java/org/onosproject/mapping/web/MappingsWebResourceTest.java
@@ -0,0 +1,487 @@
+/*
+ * Copyright 2017-present 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.mapping.web;
+
+import com.eclipsesource.json.Json;
+import com.eclipsesource.json.JsonArray;
+import com.eclipsesource.json.JsonObject;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Maps;
+import com.google.common.collect.Sets;
+import org.glassfish.jersey.server.ResourceConfig;
+import org.hamcrest.Description;
+import org.hamcrest.TypeSafeMatcher;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.onlab.osgi.ServiceDirectory;
+import org.onlab.osgi.TestServiceDirectory;
+import org.onlab.packet.IpPrefix;
+import org.onlab.rest.BaseResource;
+import org.onosproject.codec.CodecService;
+import org.onosproject.codec.impl.CodecManager;
+import org.onosproject.mapping.DefaultMappingKey;
+import org.onosproject.mapping.DefaultMappingTreatment;
+import org.onosproject.mapping.DefaultMappingValue;
+import org.onosproject.mapping.MappingEntry;
+import org.onosproject.mapping.MappingId;
+import org.onosproject.mapping.MappingKey;
+import org.onosproject.mapping.MappingService;
+import org.onosproject.mapping.MappingTreatment;
+import org.onosproject.mapping.MappingValue;
+import org.onosproject.mapping.actions.MappingAction;
+import org.onosproject.mapping.actions.MappingActions;
+import org.onosproject.mapping.addresses.MappingAddress;
+import org.onosproject.mapping.addresses.MappingAddresses;
+import org.onosproject.mapping.codec.MappingActionCodec;
+import org.onosproject.mapping.codec.MappingAddressCodec;
+import org.onosproject.mapping.codec.MappingEntryCodec;
+import org.onosproject.mapping.codec.MappingInstructionCodec;
+import org.onosproject.mapping.codec.MappingKeyCodec;
+import org.onosproject.mapping.codec.MappingTreatmentCodec;
+import org.onosproject.mapping.codec.MappingValueCodec;
+import org.onosproject.mapping.instructions.MappingInstruction;
+import org.onosproject.net.DefaultDevice;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.rest.resources.ResourceTest;
+
+import javax.ws.rs.client.WebTarget;
+import java.util.Map;
+import java.util.Set;
+
+import static org.easymock.EasyMock.anyObject;
+import static org.easymock.EasyMock.createMock;
+import static org.easymock.EasyMock.expect;
+import static org.easymock.EasyMock.replay;
+import static org.easymock.EasyMock.verify;
+import static org.hamcrest.Matchers.hasSize;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.notNullValue;
+import static org.junit.Assert.assertThat;
+import static org.onosproject.mapping.MappingStore.Type.MAP_DATABASE;
+import static org.onosproject.mapping.instructions.MappingInstructions.multicastPriority;
+import static org.onosproject.mapping.instructions.MappingInstructions.multicastWeight;
+import static org.onosproject.mapping.instructions.MappingInstructions.unicastPriority;
+import static org.onosproject.mapping.instructions.MappingInstructions.unicastWeight;
+
+/**
+ * Unit tests for Mappings REST APIs.
+ */
+public class MappingsWebResourceTest extends ResourceTest {
+
+    private static final String IPV4_STRING_1 = "1.2.3.4";
+    private static final String IPV4_STRING_2 = "5.6.7.8";
+    private static final String PORT_STRING = "32";
+    private static final IpPrefix IPV4_PREFIX_1 =
+            IpPrefix.valueOf(IPV4_STRING_1 + "/" + PORT_STRING);
+    private static final IpPrefix IPV4_PREFIX_2 =
+            IpPrefix.valueOf(IPV4_STRING_2 + "/" + PORT_STRING);
+
+    private static final int UNICAST_WEIGHT = 1;
+    private static final int UNICAST_PRIORITY = 1;
+    private static final int MULTICAST_WEIGHT = 2;
+    private static final int MULTICAST_PRIORITY = 2;
+
+    private static final int DIFF_VALUE = 99;
+
+    private static final String ID = "id";
+
+    private static final String PREFIX = "mappings";
+
+    private final MappingService mockMappingService = createMock(MappingService.class);
+
+    private final Map<DeviceId, Set<MappingEntry>> mappings = Maps.newHashMap();
+
+    private final DeviceService mockDeviceService = createMock(DeviceService.class);
+    private final DeviceId deviceId1 = DeviceId.deviceId("1");
+    private final DeviceId deviceId2 = DeviceId.deviceId("2");
+    private final Device device1 = new DefaultDevice(null, deviceId1, Device.Type.ROUTER,
+            "", "", "", "", null);
+    private final Device device2 = new DefaultDevice(null, deviceId2, Device.Type.ROUTER,
+            "", "", "", "", null);
+
+    private final MockMappingEntry mapping1 = new MockMappingEntry(deviceId1, 1);
+    private final MockMappingEntry mapping2 = new MockMappingEntry(deviceId1, 2);
+
+    private final MockMappingEntry mapping3 = new MockMappingEntry(deviceId2, 3);
+    private final MockMappingEntry mapping4 = new MockMappingEntry(deviceId2, 4);
+
+    private final Set<MappingEntry> mappingEntries = ImmutableSet.of(mapping1, mapping2, mapping3, mapping4);
+
+    /**
+     * Constructs a mappings web resource test instance.
+     */
+    public MappingsWebResourceTest() {
+        super(ResourceConfig.forApplicationClass(MappingsWebApplication.class));
+    }
+
+    /**
+     * Mock class for a mapping entry.
+     */
+    private static class MockMappingEntry implements MappingEntry {
+        final short UNIQUE_SHORT = 2;
+        final DeviceId deviceId;
+        MappingKey key;
+        MappingValue value;
+        final long baseValue;
+
+        MockMappingEntry(DeviceId deviceId, long id) {
+            this.deviceId = deviceId;
+            this.baseValue = id * 100;
+        }
+
+        @Override
+        public MappingId id() {
+            final long id = baseValue + 11;
+            return MappingId.valueOf(id);
+        }
+
+        @Override
+        public short appId() {
+            return UNIQUE_SHORT;
+        }
+
+        @Override
+        public DeviceId deviceId() {
+            return deviceId;
+        }
+
+        @Override
+        public MappingKey key() {
+            return key;
+        }
+
+        @Override
+        public MappingValue value() {
+            return value;
+        }
+
+        @Override
+        public MappingEntryState state() {
+            return MappingEntryState.ADDED;
+        }
+    }
+
+    /**
+     * Populates some mappings used as testing data.
+     */
+    private void setupMockMappings() {
+        MappingAddress address1 = MappingAddresses.ipv4MappingAddress(IPV4_PREFIX_1);
+        MappingAddress address2 = MappingAddresses.ipv4MappingAddress(IPV4_PREFIX_2);
+
+        MappingInstruction unicastWeight1 = unicastWeight(UNICAST_WEIGHT);
+        MappingInstruction unicastPriority1 = unicastPriority(UNICAST_PRIORITY);
+        MappingInstruction multicastWeight1 = multicastWeight(MULTICAST_WEIGHT);
+        MappingInstruction multicastPriority1 = multicastPriority(MULTICAST_PRIORITY);
+
+        MappingInstruction unicastWeight2 = unicastWeight(UNICAST_WEIGHT + DIFF_VALUE);
+        MappingInstruction unicastPriority2 = unicastPriority(UNICAST_PRIORITY + DIFF_VALUE);
+        MappingInstruction multicastWeight2 = multicastWeight(MULTICAST_WEIGHT + DIFF_VALUE);
+        MappingInstruction multicastPriority2 = multicastPriority(MULTICAST_PRIORITY + DIFF_VALUE);
+
+        MappingKey key1 = DefaultMappingKey.builder()
+                .withAddress(address1)
+                .build();
+
+        MappingTreatment treatment1 = DefaultMappingTreatment.builder()
+                .add(unicastWeight1)
+                .add(unicastPriority1)
+                .add(multicastWeight1)
+                .add(multicastPriority1)
+                .withAddress(address1)
+                .build();
+
+        MappingAction action1 = MappingActions.noAction();
+
+        MappingValue value1 = DefaultMappingValue.builder()
+                .add(treatment1)
+                .withAction(action1)
+                .build();
+
+        MappingKey key2 = DefaultMappingKey.builder()
+                .withAddress(address2)
+                .build();
+
+        MappingTreatment treatment2 = DefaultMappingTreatment.builder()
+                .add(unicastWeight2)
+                .add(unicastPriority2)
+                .add(multicastWeight2)
+                .add(multicastPriority2)
+                .withAddress(address2)
+                .build();
+
+        MappingAction action2 = MappingActions.forward();
+
+        MappingValue value2 = DefaultMappingValue.builder()
+                .add(treatment2)
+                .withAction(action2)
+                .build();
+
+        mapping1.key = key1;
+        mapping2.key = key2;
+        mapping3.key = key1;
+        mapping4.key = key2;
+
+        mapping1.value = value1;
+        mapping2.value = value2;
+        mapping3.value = value1;
+        mapping4.value = value2;
+
+        final Set<MappingEntry> mappings1 = Sets.newHashSet();
+        mappings1.add(mapping1);
+        mappings1.add(mapping2);
+
+        final Set<MappingEntry> mappings2 = Sets.newHashSet();
+        mappings2.add(mapping3);
+        mappings2.add(mapping4);
+
+        mappings.put(deviceId1, mappings1);
+        mappings.put(deviceId2, mappings2);
+    }
+
+    /**
+     * Sets up the global values for all the tests.
+     */
+    @Before
+    public void setUpTest() {
+
+        // Register the services needed for the test
+        final CodecManager codecService = new CodecManager();
+        codecService.activate();
+        codecService.registerCodec(MappingEntry.class, new MappingEntryCodec());
+        codecService.registerCodec(MappingAddress.class, new MappingAddressCodec());
+        codecService.registerCodec(MappingInstruction.class, new MappingInstructionCodec());
+        codecService.registerCodec(MappingAction.class, new MappingActionCodec());
+        codecService.registerCodec(MappingTreatment.class, new MappingTreatmentCodec());
+        codecService.registerCodec(MappingKey.class, new MappingKeyCodec());
+        codecService.registerCodec(MappingValue.class, new MappingValueCodec());
+        ServiceDirectory testDirectory =
+                new TestServiceDirectory()
+                        .add(MappingService.class, mockMappingService)
+                        .add(DeviceService.class, mockDeviceService)
+                        .add(CodecService.class, codecService);
+
+        BaseResource.setServiceDirectory(testDirectory);
+    }
+
+    /**
+     * Cleans up and verifies the mocks.
+     */
+    @After
+    public void tearDownTest() {
+        verify(mockMappingService);
+    }
+
+    public static class MappingEntryJsonArrayMatcher extends TypeSafeMatcher<JsonArray> {
+
+        private final MappingEntry mapping;
+        private String reason = "";
+
+        MappingEntryJsonArrayMatcher(MappingEntry mappingValue) {
+            mapping = mappingValue;
+        }
+
+        @Override
+        protected boolean matchesSafely(JsonArray json) {
+
+            boolean mappingFound = false;
+
+            for (int jsonMappingIndex = 0; jsonMappingIndex < json.size();
+                 jsonMappingIndex++) {
+
+                final JsonObject jsonMapping = json.get(jsonMappingIndex).asObject();
+
+                final String mappingId = Long.toString(mapping.id().value());
+                final String jsonMappingId = jsonMapping.get(ID).asString();
+                if (jsonMappingId.equals(mappingId)) {
+                    mappingFound = true;
+                    assertThat(jsonMapping, matchesMapping(mapping));
+                }
+            }
+
+            if (!mappingFound) {
+                reason = "Mapping with id " + mapping.id().toString() + " not found";
+                return false;
+            } else {
+                return true;
+            }
+        }
+
+        @Override
+        public void describeTo(Description description) {
+            description.appendText(reason);
+        }
+    }
+
+    /**
+     * Hamcrest matcher for mapping entry.
+     */
+    public static final class MappingEntryJsonMatcher
+            extends TypeSafeMatcher<JsonObject> {
+
+        private final MappingEntry mappingEntry;
+        private String reason = "";
+
+        /**
+         * A default constructor.
+         *
+         * @param mappingEntry mapping entry
+         */
+        private MappingEntryJsonMatcher(MappingEntry mappingEntry) {
+            this.mappingEntry = mappingEntry;
+        }
+
+        @Override
+        protected boolean matchesSafely(JsonObject jsonObject) {
+            // check mapping id
+            final String jsonId = jsonObject.get("id").asString();
+            final String mappingId = Long.toString(mappingEntry.id().value());
+
+            if (!jsonId.equals(mappingId)) {
+                reason = "id " + mappingEntry.id().toString();
+                return false;
+            }
+
+            // check device id
+            final String jsonDeviceId = jsonObject.get("deviceId").asString();
+            final String deviceId = mappingEntry.deviceId().toString();
+            if (!jsonDeviceId.equals(deviceId)) {
+                reason = "deviceId " + mappingEntry.deviceId();
+                return false;
+            }
+
+            // check state
+            final String jsonState = jsonObject.get("state").asString();
+            final String state = mappingEntry.state().name();
+            if (!jsonState.equals(state)) {
+                reason = "state " + mappingEntry.state().name();
+                return false;
+            }
+
+            return true;
+        }
+
+        @Override
+        public void describeTo(Description description) {
+            description.appendText(reason);
+        }
+    }
+
+    /**
+     * Factory to allocate a mapping matcher.
+     *
+     * @param mapping mapping object we are looking for
+     * @return matcher
+     */
+    private static MappingEntryJsonMatcher matchesMapping(MappingEntry mapping) {
+        return new MappingEntryJsonMatcher(mapping);
+    }
+
+    /**
+     * Factory to allocate a mapping array matcher.
+     *
+     * @param mapping mapping object we are looking for
+     * @return matcher
+     */
+    private static MappingEntryJsonArrayMatcher hasMapping(MappingEntry mapping) {
+        return new MappingEntryJsonArrayMatcher(mapping);
+    }
+
+    /**
+     * Tests the result of the rest api GET when there are no mappings.
+     */
+    @Test
+    public void testMappingsEmptyArray() {
+        expect(mockMappingService.getAllMappingEntries(anyObject()))
+                .andReturn(null).anyTimes();
+        replay(mockMappingService);
+        final WebTarget wt = target();
+        final String response = wt.path(PREFIX + "/db").request().get(String.class);
+        assertThat(response, is("{\"mappings\":[]}"));
+    }
+
+    /**
+     * Tests the result of the rest api GET when there are active mappings.
+     */
+    @Test
+    public void testMappingsPopulateArray() {
+        setupMockMappings();
+        expect(mockMappingService.getAllMappingEntries(anyObject()))
+                .andReturn(mappingEntries).once();
+        replay(mockMappingService);
+        final WebTarget wt = target();
+        final String response = wt.path(PREFIX + "/db").request().get(String.class);
+        final JsonObject result = Json.parse(response).asObject();
+        assertThat(result, notNullValue());
+
+        assertThat(result.names(), hasSize(1));
+        assertThat(result.names().get(0), is("mappings"));
+        final JsonArray jsonMappings = result.get("mappings").asArray();
+        assertThat(jsonMappings, notNullValue());
+        assertThat(jsonMappings, hasMapping(mapping1));
+        assertThat(jsonMappings, hasMapping(mapping2));
+        assertThat(jsonMappings, hasMapping(mapping3));
+        assertThat(jsonMappings, hasMapping(mapping4));
+    }
+
+    /**
+     * Tests the result of the rest api GET with a device ID when there are
+     * no mappings.
+     */
+    @Test
+    public void testMappingsByDevIdEmptyArray() {
+        expect(mockDeviceService.getDevice(deviceId1)).andReturn(device1);
+        expect(mockMappingService.getMappingEntries(MAP_DATABASE, deviceId1))
+                .andReturn(null).anyTimes();
+        replay(mockDeviceService);
+        replay(mockMappingService);
+
+        final WebTarget wt = target();
+        final String response = wt.path(PREFIX + "/" + deviceId1 + "/db")
+                .request().get(String.class);
+        assertThat(response, is("{\"mappings\":[]}"));
+    }
+
+    /**
+     * Tests the result of the rest api GET with a device ID when there are
+     * active mappings.
+     */
+    @Test
+    public void testMappingsByDevIdPopulateArray() {
+        setupMockMappings();
+        expect(mockDeviceService.getDevice(deviceId2)).andReturn(device2);
+        expect(mockMappingService.getMappingEntries(MAP_DATABASE, deviceId2))
+                .andReturn(mappings.get(deviceId2)).once();
+        replay(mockDeviceService);
+        replay(mockMappingService);
+
+        final WebTarget wt = target();
+        final String response = wt.path(PREFIX + "/" + deviceId2 + "/db")
+                .request().get(String.class);
+
+        final JsonObject result = Json.parse(response).asObject();
+        assertThat(result, notNullValue());
+
+        assertThat(result.names(), hasSize(1));
+        assertThat(result.names().get(0), is("mappings"));
+        final JsonArray jsonMappings = result.get("mappings").asArray();
+        assertThat(jsonMappings, notNullValue());
+        assertThat(jsonMappings, hasMapping(mapping3));
+        assertThat(jsonMappings, hasMapping(mapping4));
+    }
+}