1 files changed, 90 insertions, 0 deletions
diff --git a/sandbox/sca-cloud-tutorial/cloud-google/src/main/java/org/apache/tuscany/sca/cloud/data/impl/MemcacheDocumentServiceImpl.java b/sandbox/sca-cloud-tutorial/cloud-google/src/main/java/org/apache/tuscany/sca/cloud/data/impl/MemcacheDocumentServiceImpl.java
new file mode 100644
index 0000000000..890747f4aa
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+++ b/sandbox/sca-cloud-tutorial/cloud-google/src/main/java/org/apache/tuscany/sca/cloud/data/impl/MemcacheDocumentServiceImpl.java
@@ -0,0 +1,90 @@
+/*
+ * 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.sca.cloud.data.impl;
+
+import java.util.UUID;
+
+import org.apache.tuscany.sca.cloud.data.DocumentService;
+import org.apache.tuscany.sca.data.collection.Entry;
+import org.apache.tuscany.sca.data.collection.NotFoundException;
+import org.oasisopen.sca.annotation.Init;
+import org.oasisopen.sca.annotation.Property;
+
+import com.google.appengine.api.memcache.Expiration;
+import com.google.appengine.api.memcache.MemcacheService;
+import com.google.appengine.api.memcache.MemcacheServiceFactory;
+
+public class MemcacheDocumentServiceImpl implements DocumentService<Object, Object> {
+    private MemcacheService googleMemecacheService;
+    
+    @Property(required=false)
+    protected Expiration defaultExpiration = Expiration.byDeltaSeconds(3600); // 1hr
+
+    @Init
+    public void init() {
+        googleMemecacheService = MemcacheServiceFactory.getMemcacheService();
+    }
+    
+    public Entry<Object, Object>[] getAll() {
+        throw new UnsupportedOperationException();
+    }
+
+    public Object get(Object key) throws NotFoundException {
+        Object entity = null;
+        
+        entity =  googleMemecacheService.get(key);
+        
+        if(entity == null) {
+            throw new NotFoundException("Could not find object with key '" + key.toString() + "'");
+        }
+
+        return entity;
+    }
+
+    public Object post(Object key, Object entity) {
+        if( key == null ) {
+            key = UUID.randomUUID().toString();
+        }
+        
+        googleMemecacheService.put(key, entity, defaultExpiration);
+        
+        return entity;
+    }
+
+    public void put(Object key, Object entity) throws NotFoundException {
+        if( get(key) == null) {
+            throw new NotFoundException("Could not find entity with key '" + key.toString() +"'");
+        }
+        
+        googleMemecacheService.put(key, entity, defaultExpiration);
+    }
+
+    public void delete(Object key) throws NotFoundException {
+        googleMemecacheService.delete(key);
+    }
+
+    public void delete(Object... keys) throws NotFoundException {
+        googleMemecacheService.delete(keys);
+    }
+
+    public Entry<Object, Object>[] query(String query) {
+        throw new UnsupportedOperationException();
+    }
+}