add PropertyTransferFactory to implement factory pattern

src/main/java/org/jfaster/mango/invoker/transfer/PropertyTransferFactory.java

@@ -0,0 +1,29 @@
+package org.jfaster.mango.invoker.transfer;
+
+import org.jfaster.mango.invoker.PropertyTransfer;
+import org.jfaster.mango.invoker.transfer.enums.EnumToIntegerTransfer;
+import org.jfaster.mango.invoker.transfer.enums.EnumToStringTransfer;
+import org.jfaster.mango.invoker.transfer.json.ObjectToFastjsonTransfer;
+import org.jfaster.mango.invoker.transfer.json.ObjectToGsonTransfer;
+
+public class PropertyTransferFactory {
+
+    public PropertyTransfer makeInstanceFromFactory(String type) {
+        if (type.equals("ObjectToFastjsonTransfer")) {
+            return new ObjectToFastjsonTransfer();
+        } else if (type.equals("ObjectToGsonTransfer")) {
+            return new ObjectToGsonTransfer();
+        } else if (type.equals("IntegerListToStringTransfer")) {
+            return new IntegerListToStringTransfer();
+        } else if (type.equals("LongListToStringTransfer")) {
+            return new LongListToStringTransfer();
+        } else if (type.equals("StringListToStringTransfer")) {
+            return new StringListToStringTransfer();
+        } else if (type.equals("EnumToIntegerTransfer")) {
+            return new EnumToIntegerTransfer();
+        } else if (type.equals("EnumToStringTransfer")) {
+            return new EnumToStringTransfer();
+        } else return
+                null;
+    }
+}

src/test/java/org/jfaster/mango/invoker/transfer/IntegerListToStringTransferTest.java

@@ -32,15 +32,15 @@ public class IntegerListToStringTransferTest {
 
   @Test
   public void propertyToColumn() {
-    IntegerListToStringTransfer transfer = new IntegerListToStringTransfer();
+    IntegerListToStringTransfer transfer = (IntegerListToStringTransfer) new PropertyTransferFactory().makeInstanceFromFactory("IntegerListToStringTransfer");
     assertThat(transfer.propertyToColumn(null), nullValue());
     assertThat(transfer.propertyToColumn(Lists.newArrayList()), equalTo(""));
     assertThat(transfer.propertyToColumn(Lists.newArrayList(1,2,3)), equalTo("1,2,3"));
   }
 
   @Test
   public void columnToProperty() {
-    IntegerListToStringTransfer transfer = new IntegerListToStringTransfer();
+    IntegerListToStringTransfer transfer = (IntegerListToStringTransfer) new PropertyTransferFactory().makeInstanceFromFactory("IntegerListToStringTransfer");
     assertThat(transfer.columnToProperty(null, null), nullValue());
     assertThat(transfer.columnToProperty("", null), hasSize(0));
     List<Integer> r = transfer.columnToProperty("1,2,3", null);

src/test/java/org/jfaster/mango/invoker/transfer/LongListToStringTransferTest.java

@@ -32,15 +32,15 @@ public class LongListToStringTransferTest {
 
   @Test
   public void propertyToColumn() {
-    LongListToStringTransfer transfer = new LongListToStringTransfer();
+    LongListToStringTransfer transfer = (LongListToStringTransfer) new PropertyTransferFactory().makeInstanceFromFactory("LongListToStringTransfer");
     assertThat(transfer.propertyToColumn(null), nullValue());
     assertThat(transfer.propertyToColumn(Lists.newArrayList()), equalTo(""));
     assertThat(transfer.propertyToColumn(Lists.newArrayList(1L,2L,3L)), equalTo("1,2,3"));
   }
 
   @Test
   public void columnToProperty() {
-    LongListToStringTransfer transfer = new LongListToStringTransfer();
+    LongListToStringTransfer transfer = (LongListToStringTransfer) new PropertyTransferFactory().makeInstanceFromFactory("LongListToStringTransfer");
     assertThat(transfer.columnToProperty(null, null), nullValue());
     assertThat(transfer.columnToProperty("", null), hasSize(0));
     List<Long> r = transfer.columnToProperty("1,2,3", null);

src/test/java/org/jfaster/mango/invoker/transfer/StringListToStringTransferTest.java

@@ -32,15 +32,15 @@ public class StringListToStringTransferTest {
 
   @Test
   public void propertyToColumn() {
-    StringListToStringTransfer transfer = new StringListToStringTransfer();
+    StringListToStringTransfer transfer = (StringListToStringTransfer) new PropertyTransferFactory().makeInstanceFromFactory("StringListToStringTransfer");
     assertThat(transfer.propertyToColumn(null), nullValue());
     assertThat(transfer.propertyToColumn(Lists.newArrayList()), equalTo(""));
     assertThat(transfer.propertyToColumn(Lists.newArrayList("1", "2", "3")), equalTo("1,2,3"));
   }
 
   @Test
   public void columnToProperty() {
-    StringListToStringTransfer transfer = new StringListToStringTransfer();
+    StringListToStringTransfer transfer = (StringListToStringTransfer) new PropertyTransferFactory().makeInstanceFromFactory("StringListToStringTransfer");
     assertThat(transfer.columnToProperty(null, null), nullValue());
     assertThat(transfer.columnToProperty("", null), hasSize(0));
     List<String> r = transfer.columnToProperty("1,2,3", null);

src/test/java/org/jfaster/mango/invoker/transfer/enums/EnumToIntegerTransferTest.java

@@ -16,6 +16,7 @@
 
 package org.jfaster.mango.invoker.transfer.enums;
 
+import org.jfaster.mango.invoker.transfer.PropertyTransferFactory;
 import org.junit.Test;
 
 import static org.hamcrest.CoreMatchers.equalTo;
@@ -29,7 +30,7 @@ public class EnumToIntegerTransferTest {
 
   @Test
   public void propertyToColumn() {
-    EnumToIntegerTransfer transfer = new EnumToIntegerTransfer();
+    EnumToIntegerTransfer transfer = (EnumToIntegerTransfer) new PropertyTransferFactory().makeInstanceFromFactory("EnumToIntegerTransfer");
     assertThat(transfer.propertyToColumn(null), nullValue());
     assertThat(transfer.propertyToColumn(E.X), equalTo(0));
     assertThat(transfer.propertyToColumn(E.Y), equalTo(1));
@@ -38,7 +39,7 @@ public void propertyToColumn() {
 
   @Test
   public void columnToProperty() {
-    EnumToIntegerTransfer transfer = new EnumToIntegerTransfer();
+    EnumToIntegerTransfer transfer = (EnumToIntegerTransfer) new PropertyTransferFactory().makeInstanceFromFactory("EnumToIntegerTransfer");
     assertThat(transfer.columnToProperty(null, E.class), nullValue());
     assertThat(transfer.columnToProperty(0, E.class), equalTo(E.X));
     assertThat(transfer.columnToProperty(1, E.class), equalTo(E.Y));

src/test/java/org/jfaster/mango/invoker/transfer/enums/EnumToStringTransferTest.java

@@ -16,6 +16,7 @@
 
 package org.jfaster.mango.invoker.transfer.enums;
 
+import org.jfaster.mango.invoker.transfer.PropertyTransferFactory;
 import org.junit.Test;
 
 import static org.hamcrest.CoreMatchers.equalTo;
@@ -29,7 +30,7 @@ public class EnumToStringTransferTest {
 
   @Test
   public void propertyToColumn() {
-    EnumToStringTransfer transfer = new EnumToStringTransfer();
+    EnumToStringTransfer transfer = (EnumToStringTransfer) new PropertyTransferFactory().makeInstanceFromFactory("EnumToStringTransfer");
     assertThat(transfer.propertyToColumn(null), nullValue());
     assertThat(transfer.propertyToColumn(E.X), equalTo("X"));
     assertThat(transfer.propertyToColumn(E.Y), equalTo("Y"));
@@ -38,7 +39,7 @@ public void propertyToColumn() {
 
   @Test
   public void columnToProperty() {
-    EnumToStringTransfer transfer = new EnumToStringTransfer();
+    EnumToStringTransfer transfer = (EnumToStringTransfer) new PropertyTransferFactory().makeInstanceFromFactory("EnumToStringTransfer");
     assertThat(transfer.columnToProperty(null, E.class), nullValue());
     assertThat(transfer.columnToProperty("X", E.class), equalTo(E.X));
     assertThat(transfer.columnToProperty("Y", E.class), equalTo(E.Y));

src/test/java/org/jfaster/mango/invoker/transfer/json/ObjectToFastjsonTransferTest.java

@@ -18,6 +18,7 @@
 
 import com.alibaba.fastjson.JSON;
 import com.google.common.collect.Lists;
+import org.jfaster.mango.invoker.transfer.PropertyTransferFactory;
 import org.jfaster.mango.util.reflect.TypeToken;
 import org.junit.Test;
 
@@ -35,15 +36,15 @@ public class ObjectToFastjsonTransferTest {
 
   @Test
   public void propertyToColumn() {
-    ObjectToFastjsonTransfer transfer = new ObjectToFastjsonTransfer();
+    ObjectToFastjsonTransfer transfer = (ObjectToFastjsonTransfer) new PropertyTransferFactory().makeInstanceFromFactory("ObjectToFastjsonTransfer");
     assertThat(transfer.propertyToColumn(null), nullValue());
     List<Integer> list = Lists.newArrayList(1, 2, 3);
     assertThat(transfer.propertyToColumn(list), equalTo(JSON.toJSONString(list)));
   }
 
   @Test
   public void columnToProperty() {
-    ObjectToFastjsonTransfer transfer = new ObjectToFastjsonTransfer();
+    ObjectToFastjsonTransfer transfer = (ObjectToFastjsonTransfer) new PropertyTransferFactory().makeInstanceFromFactory("ObjectToFastjsonTransfer");
     List<Integer> list = Lists.newArrayList(1, 2, 3);
     Type listType = new TypeToken<List<Integer>>(){}.getType();
     assertThat(transfer.columnToProperty(null, listType), nullValue());

src/test/java/org/jfaster/mango/invoker/transfer/json/ObjectToGsonTransferTest.java

@@ -18,6 +18,7 @@
 
 import com.google.common.collect.Lists;
 import com.google.gson.Gson;
+import org.jfaster.mango.invoker.transfer.PropertyTransferFactory;
 import org.jfaster.mango.util.reflect.TypeToken;
 import org.junit.Test;
 
@@ -35,15 +36,15 @@ public class ObjectToGsonTransferTest {
 
   @Test
   public void propertyToColumn() {
-    ObjectToGsonTransfer transfer = new ObjectToGsonTransfer();
+    ObjectToGsonTransfer transfer = (ObjectToGsonTransfer) new PropertyTransferFactory().makeInstanceFromFactory("ObjectToGsonTransfer");
     assertThat(transfer.propertyToColumn(null), nullValue());
     List<Integer> list = Lists.newArrayList(1, 2, 3);
     assertThat(transfer.propertyToColumn(list), equalTo(new Gson().toJson(list)));
   }
 
   @Test
   public void columnToProperty() {
-    ObjectToGsonTransfer transfer = new ObjectToGsonTransfer();
+    ObjectToGsonTransfer transfer = (ObjectToGsonTransfer) new PropertyTransferFactory().makeInstanceFromFactory("ObjectToGsonTransfer");
     List<Integer> list = Lists.newArrayList(1, 2, 3);
     Type listType = new TypeToken<List<Integer>>(){}.getType();
     assertThat(transfer.columnToProperty(null, listType), nullValue());