fix #16 add get by Class

Author: gkorland

src/main/java/com/redislabs/modules/rejson/JReJSON.java

@@ -186,8 +186,21 @@ public <T> T get(String key) {
      * @param key the key name
      * @param paths optional one ore more paths in the object
      * @return the requested object
+     * @deprecated use {@link #get(String, Class, Path...)} instead
      */
+    @Deprecated
     public <T> T get(String key, Path... paths) {
+      return (T)this.get(key, Object.class, paths);
+    }
+    
+    /**
+     * Gets an object
+     * @param key the key name
+     * @param clazz 
+     * @param paths optional one ore more paths in the object
+     * @return the requested object
+     */
+    public <T> T get(String key, Class<T> clazz, Path... paths) {
         byte[][] args = new byte[1 + paths.length][];
         int i=0;
         args[i] = SafeEncoder.encode(key);
@@ -201,7 +214,7 @@ public <T> T get(String key, Path... paths) {
         	rep = conn.getClient().getBulkReply();
     	}
     	assertReplyNotError(rep);
-    	return (T)gson.fromJson(rep, Object.class);
+    	return gson.fromJson(rep, clazz);
     }
 
     /**

src/test/java/com/redislabs/modules/rejson/StaticClientTest.java

@@ -35,6 +35,8 @@
 
 import static junit.framework.TestCase.*;
 
+import java.util.HashMap;
+
 public class StaticClientTest {
 
     /* A simple class that represents an object in real life */
@@ -55,6 +57,18 @@ public FooBarObject() {
             this.foo = "bar";
         }
     }
+    
+    private static class HM {
+      public HashMap<String, String> v = new HashMap<>();
+    
+      public void set(String k, String v) {
+        this.v.put(k, v);
+      }
+      
+      public String get(String k) {
+        return this.v.get(k);
+      }
+    }
 
     private Gson g;
     private String host="localhost";
@@ -155,6 +169,22 @@ public void getMultiplePathsShouldSucceed() throws Exception {
         assertTrue(expected.equals(reJSON.get("obj", new Path("bTrue"), new Path("str"))));
 
     }
+        
+    /**
+     * https://github.com/RedisJSON/JRedisJSON/issues/16
+     */
+    @Test
+    public void objectGeneration() throws Exception {
+        jedis.flushDB();
+
+        HM articleMapOne = new HM();
+        articleMapOne.set("ar01", "Intro to Map");
+        articleMapOne.set("ar02", "Some article");
+        reJSON.set("key", articleMapOne);
+        HM dest = reJSON.<HM>get("key", HM.class, Path.ROOT_PATH);
+        assertEquals("Intro to Map", dest.get("ar01"));
+        assertEquals("Some article", dest.get("ar02"));
+    }
 
     @Test(expected = Exception.class)
     public void getException() throws Exception {