Merge pull request #491 from lepdou/commit

apollo-adminservice/src/main/java/com/ctrip/framework/apollo/adminservice/controller/ItemController.java

@@ -90,6 +90,7 @@ public class ItemController {
     builder.updateItem(beforeUpdateItem, entity);
     itemDTO = BeanUtils.transfrom(ItemDTO.class, entity);
 
+    if (builder.hasContent()) {
       Commit commit = new Commit();
       commit.setAppId(appId);
       commit.setClusterName(clusterName);
@@ -98,6 +99,7 @@ public class ItemController {
       commit.setDataChangeCreatedBy(itemDTO.getDataChangeLastModifiedBy());
       commit.setDataChangeLastModifiedBy(itemDTO.getDataChangeLastModifiedBy());
       commitService.save(commit);
+    }
 
     return itemDTO;
   }

apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/entity/Commit.java

@@ -7,6 +7,7 @@ import org.hibernate.annotations.Where;
 
 import javax.persistence.Column;
 import javax.persistence.Entity;
+import javax.persistence.Lob;
 import javax.persistence.Table;
 
 @Entity
@@ -15,7 +16,8 @@ import javax.persistence.Table;
 @Where(clause = "isDeleted = 0")
 public class Commit extends BaseEntity {
 
-  @Column(name = "ChangeSets", length = 4048, nullable = false)
+  @Lob
+  @Column(name = "ChangeSets", nullable = false)
   private String changeSets;
 
   @Column(name = "AppId", nullable = false)