Making REST services from the datastores(Apache Cassandra, Apacha CouchDB and Apache Hadoop/hbase)

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1159757 13f79535-47bb-0310-9956-ffa450edef68

15 files changed, 534 insertions, 12 deletions

diff --git a/collaboration/GSoC-2011-Eranda/cassandra/pom.xml b/collaboration/GSoC-2011-Eranda/cassandra/pom.xml
index 1194cdfd26..bc74631d4e 100644
--- a/collaboration/GSoC-2011-Eranda/cassandra/pom.xml
+++ b/collaboration/GSoC-2011-Eranda/cassandra/pom.xml
@@ -22,39 +22,52 @@ under the License.
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

     <modelVersion>4.0.0</modelVersion>

     <groupId>org.apache.tuscany</groupId>

-    <artifactId>nosql-datastore</artifactId>

+    <artifactId>nosql-datastore-cassandra</artifactId>

     <version>0.0.1</version>

-

     <packaging>jar</packaging>

     <name>tuscany</name>

     <url>http://maven.apache.org</url>

     <properties>

         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

+        <cassandra.version>0.7.1</cassandra.version>

+        <hector.version>0.7.0-29</hector.version>

+        <tuscany.version>2.0-M5</tuscany.version>

     </properties>

-

     <dependencies>

         <dependency>

             <groupId>me.prettyprint</groupId>

             <artifactId>hector-core</artifactId>

-            <version>0.7.0-29</version>

+            <version>${hector.version}</version>

         </dependency>

         <dependency>

             <groupId>org.apache.cassandra</groupId>

             <artifactId>cassandra-javautils</artifactId>

-            <version>0.7.1</version>

+            <version>${cassandra.version}</version>

         </dependency>

         <dependency>

             <groupId>org.apache.cassandra</groupId>

             <artifactId>cassandra-all</artifactId>

-            <version>0.7.4</version>

+            <version>${cassandra.version}</version>

+        </dependency>

+        <dependency>

+            <groupId>org.apache.tuscany.sca</groupId>

+            <artifactId>tuscany-sca-api</artifactId>

+            <version>${tuscany.version}</version>

+            <scope>provided</scope>

+        </dependency>

+        <dependency>

+            <groupId>javax.ws.rs</groupId>

+            <artifactId>jsr311-api</artifactId>

+            <version>1.1.1</version>

+            <scope>provided</scope>

         </dependency>

         <dependency>

             <groupId>junit</groupId>

             <artifactId>junit</artifactId>

-            <version>4.8.2</version>

+            <version>4.8.1</version>

+            <scope>test</scope>

         </dependency>

     </dependencies>

-

     <build>

         <plugins>

             <plugin>

diff --git a/collaboration/GSoC-2011-Eranda/cassandra/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreService.java b/collaboration/GSoC-2011-Eranda/cassandra/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreService.java
new file mode 100644
index 0000000000..e63fb16bf5
--- /dev/null
+++ b/collaboration/GSoC-2011-Eranda/cassandra/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreService.java
@@ -0,0 +1,67 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.apache.tuscany.nosqldatastore;
+
+import org.apache.tuscany.nosqldatastore.exception.*;
+import org.oasisopen.sca.annotation.Remotable;
+
+import javax.ws.rs.*;
+
+@Remotable
+public interface DatastoreService {
+
+    @GET
+    @Path("echoTest")
+    String echoTest(@QueryParam("database") String database);
+
+    @POST
+    @Path("addEntry")
+    void addEntry(@QueryParam("database") String database,
+                  @QueryParam("group") String group,
+                  @QueryParam("key") String key,
+                  @QueryParam("value") String value) throws DuplicateEntryException, SessionException;
+
+    @POST
+    @Path("updateEntry")
+    void updateEntry(@QueryParam("database") String database,
+                     @QueryParam("group") String group,
+                     @QueryParam("key") String key,
+                     @QueryParam("value") String value) throws EntryNotFoundException, SessionException;
+
+    @POST
+    @Path("deleteEntry")
+    void deleteEntry(@QueryParam("database") String database,
+                     @QueryParam("group") String group,
+                     @QueryParam("key") String key) throws EntryNotFoundException, SessionException;
+
+    @GET
+    @Path("getEntry")
+    String getEntry(@QueryParam("database") String database,
+                    @QueryParam("group") String group,
+                    @QueryParam("key") String key) throws EntryNotFoundException, SessionException;
+
+    @DELETE
+    @Path("deleteGroup")
+    void deleteGroup(@QueryParam("database") String database,
+                     @QueryParam("group") String group) throws GroupNotFoundException, SessionException;
+
+    @DELETE
+    @Path("deleteDatabase")
+    void deleteDatabase(@QueryParam("database") String database) throws DatabaseNotFoundException, SessionException;
+}
diff --git a/collaboration/GSoC-2011-Eranda/cassandra/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreServiceImpl.java b/collaboration/GSoC-2011-Eranda/cassandra/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreServiceImpl.java
new file mode 100644
index 0000000000..6c63f74cef
--- /dev/null
+++ b/collaboration/GSoC-2011-Eranda/cassandra/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreServiceImpl.java
@@ -0,0 +1,71 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.apache.tuscany.nosqldatastore;
+
+import org.apache.tuscany.nosqldatastore.exception.*;
+import org.oasisopen.sca.annotation.Init;
+import org.oasisopen.sca.annotation.Scope;
+
+@Scope("COMPOSITE")
+public class DatastoreServiceImpl implements DatastoreService{
+
+    private Session session;
+
+    @Init
+    public void init(){
+        session = (new SessionFactory()).getCassandraSession();    
+    }
+
+    public String echoTest(String database){
+        return "Database "+database;
+    }
+
+    public void addEntry(String database, String group, String key, String value) throws DuplicateEntryException, SessionException {
+        Database db = session.getDatabase(database);
+        Group grp = db.getGroup(group);
+        grp.addEntry(key, value);
+    }
+
+    public void updateEntry(String database, String group, String key, String value) throws EntryNotFoundException, SessionException {
+        Database db = session.getDatabase(database);
+        Group grp = db.getGroup(group);
+        grp.updateEntry(key, value);
+    }
+
+    public void deleteEntry(String database, String group, String key) throws EntryNotFoundException, SessionException {
+        Database db = session.getDatabase(database);
+        Group grp = db.getGroup(group);
+        grp.deleteEntry(key);
+    }
+
+    public String getEntry(String database, String group, String key) throws EntryNotFoundException, SessionException {
+        Database db = session.getDatabase(database);
+        Group grp = db.getGroup(group);
+        return grp.getEntry(key);
+    }
+
+    public void deleteGroup(String database, String group) throws GroupNotFoundException, SessionException {
+        Database db = session.getDatabase(database);
+        db.deleteGroup(group);
+    }
+
+    public void deleteDatabase(String database) throws DatabaseNotFoundException, SessionException {
+        session.deleteDatabase(database);
+    }
+}
diff --git a/collaboration/GSoC-2011-Eranda/cassandra/src/main/resources/META-INF/sca-contribution.xml b/collaboration/GSoC-2011-Eranda/cassandra/src/main/resources/META-INF/sca-contribution.xml
new file mode 100644
index 0000000000..b9960d1bac
--- /dev/null
+++ b/collaboration/GSoC-2011-Eranda/cassandra/src/main/resources/META-INF/sca-contribution.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>

+<contribution xmlns="http://docs.oasis-open.org/ns/opencsa/sca/200912"

+              xmlns:datastore="http://datastore">

+   

+   <deployable composite="datastore:datastore-contribution" />

+

+</contribution>

diff --git a/collaboration/GSoC-2011-Eranda/cassandra/src/main/resources/datastore.composite b/collaboration/GSoC-2011-Eranda/cassandra/src/main/resources/datastore.composite
new file mode 100644
index 0000000000..bf67ad5eee
--- /dev/null
+++ b/collaboration/GSoC-2011-Eranda/cassandra/src/main/resources/datastore.composite
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<composite xmlns="http://docs.oasis-open.org/ns/opencsa/sca/200912"
+           xmlns:tuscany="http://tuscany.apache.org/xmlns/sca/1.1"
+           targetNamespace="http://datastore"
+           name="datastore-contribution">
+	<component name="DatastoreComponent">
+	    	<implementation.java class="org.apache.tuscany.nosqldatastore.DatastoreServiceImpl"/>
+		    <service name="DatastoreService">
+		        <interface.java interface="org.apache.tuscany.nosqldatastore.DatastoreService"/>
+                <tuscany:binding.rest uri="http://localhost:8085/DatastoreService">
+                    <tuscany:wireFormat.json/>
+	                <tuscany:operationSelector.jaxrs/>
+                </tuscany:binding.rest>
+        	</service>
+    </component>               
+</composite>
diff --git a/collaboration/GSoC-2011-Eranda/couchdb/pom.xml b/collaboration/GSoC-2011-Eranda/couchdb/pom.xml
index 32c17907ad..4e3aff6542 100644
--- a/collaboration/GSoC-2011-Eranda/couchdb/pom.xml
+++ b/collaboration/GSoC-2011-Eranda/couchdb/pom.xml
@@ -30,13 +30,27 @@ under the License.
     <url>http://maven.apache.org</url>
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <jcouchdb.version>0.10.0-1</jcouchdb.version>
+        <tuscany.version>2.0-M5</tuscany.version>
     </properties>
 
     <dependencies>
         <dependency>
             <groupId>com.google.code.jcouchdb</groupId>
             <artifactId>jcouchdb</artifactId>
-            <version>0.10.0-1</version>
+            <version>${jcouchdb.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.tuscany.sca</groupId>
+            <artifactId>tuscany-sca-api</artifactId>
+            <version>${tuscany.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>javax.ws.rs</groupId>
+            <artifactId>jsr311-api</artifactId>
+            <version>1.1.1</version>
+            <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>junit</groupId>
diff --git a/collaboration/GSoC-2011-Eranda/couchdb/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreService.java b/collaboration/GSoC-2011-Eranda/couchdb/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreService.java
new file mode 100644
index 0000000000..e63fb16bf5
--- /dev/null
+++ b/collaboration/GSoC-2011-Eranda/couchdb/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreService.java
@@ -0,0 +1,67 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.apache.tuscany.nosqldatastore;
+
+import org.apache.tuscany.nosqldatastore.exception.*;
+import org.oasisopen.sca.annotation.Remotable;
+
+import javax.ws.rs.*;
+
+@Remotable
+public interface DatastoreService {
+
+    @GET
+    @Path("echoTest")
+    String echoTest(@QueryParam("database") String database);
+
+    @POST
+    @Path("addEntry")
+    void addEntry(@QueryParam("database") String database,
+                  @QueryParam("group") String group,
+                  @QueryParam("key") String key,
+                  @QueryParam("value") String value) throws DuplicateEntryException, SessionException;
+
+    @POST
+    @Path("updateEntry")
+    void updateEntry(@QueryParam("database") String database,
+                     @QueryParam("group") String group,
+                     @QueryParam("key") String key,
+                     @QueryParam("value") String value) throws EntryNotFoundException, SessionException;
+
+    @POST
+    @Path("deleteEntry")
+    void deleteEntry(@QueryParam("database") String database,
+                     @QueryParam("group") String group,
+                     @QueryParam("key") String key) throws EntryNotFoundException, SessionException;
+
+    @GET
+    @Path("getEntry")
+    String getEntry(@QueryParam("database") String database,
+                    @QueryParam("group") String group,
+                    @QueryParam("key") String key) throws EntryNotFoundException, SessionException;
+
+    @DELETE
+    @Path("deleteGroup")
+    void deleteGroup(@QueryParam("database") String database,
+                     @QueryParam("group") String group) throws GroupNotFoundException, SessionException;
+
+    @DELETE
+    @Path("deleteDatabase")
+    void deleteDatabase(@QueryParam("database") String database) throws DatabaseNotFoundException, SessionException;
+}
diff --git a/collaboration/GSoC-2011-Eranda/couchdb/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreServiceImpl.java b/collaboration/GSoC-2011-Eranda/couchdb/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreServiceImpl.java
new file mode 100644
index 0000000000..a153f0ce0f
--- /dev/null
+++ b/collaboration/GSoC-2011-Eranda/couchdb/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreServiceImpl.java
@@ -0,0 +1,71 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.apache.tuscany.nosqldatastore;
+
+import org.apache.tuscany.nosqldatastore.exception.*;
+import org.oasisopen.sca.annotation.Init;
+import org.oasisopen.sca.annotation.Scope;
+
+@Scope("COMPOSITE")
+public class DatastoreServiceImpl implements DatastoreService{
+
+    private Session session;
+
+    @Init
+    public void init(){
+        session = (new SessionFactory()).getCouchDBSession();    
+    }
+
+    public String echoTest(String database){
+        return "Database "+database;
+    }
+
+    public void addEntry(String database, String group, String key, String value) throws DuplicateEntryException, SessionException {
+        Database db = session.getDatabase(database);
+        Group grp = db.getGroup(group);
+        grp.addEntry(key, value);
+    }
+
+    public void updateEntry(String database, String group, String key, String value) throws EntryNotFoundException, SessionException {
+        Database db = session.getDatabase(database);
+        Group grp = db.getGroup(group);
+        grp.updateEntry(key, value);
+    }
+
+    public void deleteEntry(String database, String group, String key) throws EntryNotFoundException, SessionException {
+        Database db = session.getDatabase(database);
+        Group grp = db.getGroup(group);
+        grp.deleteEntry(key);
+    }
+
+    public String getEntry(String database, String group, String key) throws EntryNotFoundException, SessionException {
+        Database db = session.getDatabase(database);
+        Group grp = db.getGroup(group);
+        return grp.getEntry(key);
+    }
+
+    public void deleteGroup(String database, String group) throws GroupNotFoundException, SessionException {
+        Database db = session.getDatabase(database);
+        db.deleteGroup(group);
+    }
+
+    public void deleteDatabase(String database) throws DatabaseNotFoundException, SessionException {
+        session.deleteDatabase(database);
+    }
+}
diff --git a/collaboration/GSoC-2011-Eranda/couchdb/src/main/resources/META-INF/sca-contribution.xml b/collaboration/GSoC-2011-Eranda/couchdb/src/main/resources/META-INF/sca-contribution.xml
new file mode 100644
index 0000000000..b9960d1bac
--- /dev/null
+++ b/collaboration/GSoC-2011-Eranda/couchdb/src/main/resources/META-INF/sca-contribution.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>

+<contribution xmlns="http://docs.oasis-open.org/ns/opencsa/sca/200912"

+              xmlns:datastore="http://datastore">

+   

+   <deployable composite="datastore:datastore-contribution" />

+

+</contribution>

diff --git a/collaboration/GSoC-2011-Eranda/couchdb/src/main/resources/datastore.composite b/collaboration/GSoC-2011-Eranda/couchdb/src/main/resources/datastore.composite
new file mode 100644
index 0000000000..bf67ad5eee
--- /dev/null
+++ b/collaboration/GSoC-2011-Eranda/couchdb/src/main/resources/datastore.composite
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<composite xmlns="http://docs.oasis-open.org/ns/opencsa/sca/200912"
+           xmlns:tuscany="http://tuscany.apache.org/xmlns/sca/1.1"
+           targetNamespace="http://datastore"
+           name="datastore-contribution">
+	<component name="DatastoreComponent">
+	    	<implementation.java class="org.apache.tuscany.nosqldatastore.DatastoreServiceImpl"/>
+		    <service name="DatastoreService">
+		        <interface.java interface="org.apache.tuscany.nosqldatastore.DatastoreService"/>
+                <tuscany:binding.rest uri="http://localhost:8085/DatastoreService">
+                    <tuscany:wireFormat.json/>
+	                <tuscany:operationSelector.jaxrs/>
+                </tuscany:binding.rest>
+        	</service>
+    </component>               
+</composite>
diff --git a/collaboration/GSoC-2011-Eranda/hbase/pom.xml b/collaboration/GSoC-2011-Eranda/hbase/pom.xml
index a726ce23fb..518ccf7114 100644
--- a/collaboration/GSoC-2011-Eranda/hbase/pom.xml
+++ b/collaboration/GSoC-2011-Eranda/hbase/pom.xml
@@ -30,21 +30,33 @@ under the License.
     <url>http://maven.apache.org</url>
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <hbase.version>0.90.3</hbase.version>
+        <tuscany.version>2.0-M5</tuscany.version>
     </properties>
-
     <dependencies>
         <dependency>
             <groupId>org.apache.hbase</groupId>
             <artifactId>hbase</artifactId>
-            <version>0.90.3</version>
+            <version>${hbase.version}</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
             <version>4.8.2</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.tuscany.sca</groupId>
+            <artifactId>tuscany-sca-api</artifactId>
+            <version>${tuscany.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>javax.ws.rs</groupId>
+            <artifactId>jsr311-api</artifactId>
+            <version>1.1.1</version>
+            <scope>provided</scope>
+        </dependency>
     </dependencies>
-
     <build>
         <plugins>
             <plugin>
diff --git a/collaboration/GSoC-2011-Eranda/hbase/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreService.java b/collaboration/GSoC-2011-Eranda/hbase/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreService.java
new file mode 100644
index 0000000000..e63fb16bf5
--- /dev/null
+++ b/collaboration/GSoC-2011-Eranda/hbase/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreService.java
@@ -0,0 +1,67 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.apache.tuscany.nosqldatastore;
+
+import org.apache.tuscany.nosqldatastore.exception.*;
+import org.oasisopen.sca.annotation.Remotable;
+
+import javax.ws.rs.*;
+
+@Remotable
+public interface DatastoreService {
+
+    @GET
+    @Path("echoTest")
+    String echoTest(@QueryParam("database") String database);
+
+    @POST
+    @Path("addEntry")
+    void addEntry(@QueryParam("database") String database,
+                  @QueryParam("group") String group,
+                  @QueryParam("key") String key,
+                  @QueryParam("value") String value) throws DuplicateEntryException, SessionException;
+
+    @POST
+    @Path("updateEntry")
+    void updateEntry(@QueryParam("database") String database,
+                     @QueryParam("group") String group,
+                     @QueryParam("key") String key,
+                     @QueryParam("value") String value) throws EntryNotFoundException, SessionException;
+
+    @POST
+    @Path("deleteEntry")
+    void deleteEntry(@QueryParam("database") String database,
+                     @QueryParam("group") String group,
+                     @QueryParam("key") String key) throws EntryNotFoundException, SessionException;
+
+    @GET
+    @Path("getEntry")
+    String getEntry(@QueryParam("database") String database,
+                    @QueryParam("group") String group,
+                    @QueryParam("key") String key) throws EntryNotFoundException, SessionException;
+
+    @DELETE
+    @Path("deleteGroup")
+    void deleteGroup(@QueryParam("database") String database,
+                     @QueryParam("group") String group) throws GroupNotFoundException, SessionException;
+
+    @DELETE
+    @Path("deleteDatabase")
+    void deleteDatabase(@QueryParam("database") String database) throws DatabaseNotFoundException, SessionException;
+}
diff --git a/collaboration/GSoC-2011-Eranda/hbase/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreServiceImpl.java b/collaboration/GSoC-2011-Eranda/hbase/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreServiceImpl.java
new file mode 100644
index 0000000000..7049129046
--- /dev/null
+++ b/collaboration/GSoC-2011-Eranda/hbase/src/main/java/org/apache/tuscany/nosqldatastore/DatastoreServiceImpl.java
@@ -0,0 +1,71 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.apache.tuscany.nosqldatastore;
+
+import org.apache.tuscany.nosqldatastore.exception.*;
+import org.oasisopen.sca.annotation.Init;
+import org.oasisopen.sca.annotation.Scope;
+
+@Scope("COMPOSITE")
+public class DatastoreServiceImpl implements DatastoreService{
+
+    private Session session;
+
+    @Init
+    public void init(){
+        session = (new SessionFactory()).getHBaseSession();    
+    }
+
+    public String echoTest(String database){
+        return "Database "+database;
+    }
+
+    public void addEntry(String database, String group, String key, String value) throws DuplicateEntryException, SessionException {
+        Database db = session.getDatabase(database);
+        Group grp = db.getGroup(group);
+        grp.addEntry(key, value);
+    }
+
+    public void updateEntry(String database, String group, String key, String value) throws EntryNotFoundException, SessionException {
+        Database db = session.getDatabase(database);
+        Group grp = db.getGroup(group);
+        grp.updateEntry(key, value);
+    }
+
+    public void deleteEntry(String database, String group, String key) throws EntryNotFoundException, SessionException {
+        Database db = session.getDatabase(database);
+        Group grp = db.getGroup(group);
+        grp.deleteEntry(key);
+    }
+
+    public String getEntry(String database, String group, String key) throws EntryNotFoundException, SessionException {
+        Database db = session.getDatabase(database);
+        Group grp = db.getGroup(group);
+        return grp.getEntry(key);
+    }
+
+    public void deleteGroup(String database, String group) throws GroupNotFoundException, SessionException {
+        Database db = session.getDatabase(database);
+        db.deleteGroup(group);
+    }
+
+    public void deleteDatabase(String database) throws DatabaseNotFoundException, SessionException {
+        session.deleteDatabase(database);
+    }
+}
diff --git a/collaboration/GSoC-2011-Eranda/hbase/src/main/resources/META-INF/sca-contribution.xml b/collaboration/GSoC-2011-Eranda/hbase/src/main/resources/META-INF/sca-contribution.xml
new file mode 100644
index 0000000000..b9960d1bac
--- /dev/null
+++ b/collaboration/GSoC-2011-Eranda/hbase/src/main/resources/META-INF/sca-contribution.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>

+<contribution xmlns="http://docs.oasis-open.org/ns/opencsa/sca/200912"

+              xmlns:datastore="http://datastore">

+   

+   <deployable composite="datastore:datastore-contribution" />

+

+</contribution>

diff --git a/collaboration/GSoC-2011-Eranda/hbase/src/main/resources/datastore.composite b/collaboration/GSoC-2011-Eranda/hbase/src/main/resources/datastore.composite
new file mode 100644
index 0000000000..bf67ad5eee
--- /dev/null
+++ b/collaboration/GSoC-2011-Eranda/hbase/src/main/resources/datastore.composite
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<composite xmlns="http://docs.oasis-open.org/ns/opencsa/sca/200912"
+           xmlns:tuscany="http://tuscany.apache.org/xmlns/sca/1.1"
+           targetNamespace="http://datastore"
+           name="datastore-contribution">
+	<component name="DatastoreComponent">
+	    	<implementation.java class="org.apache.tuscany.nosqldatastore.DatastoreServiceImpl"/>
+		    <service name="DatastoreService">
+		        <interface.java interface="org.apache.tuscany.nosqldatastore.DatastoreService"/>
+                <tuscany:binding.rest uri="http://localhost:8085/DatastoreService">
+                    <tuscany:wireFormat.json/>
+	                <tuscany:operationSelector.jaxrs/>
+                </tuscany:binding.rest>
+        	</service>
+    </component>               
+</composite>