1、添加metaLink 管理

2、解决arangodb中删除 属性无效问题

src/main/java/net/tccn/meta/MetaLink.java

@@ -13,7 +13,7 @@ public class MetaLink extends Doc<MetaLink> {
     public static MetaLink dao = Doc.dao(MetaLink.class);
 
     private String[] tables;
-    private Map link;
+    private Map<String, String> link;
 
     //-------------------------------------------
 
@@ -30,7 +30,7 @@ public class MetaLink extends Doc<MetaLink> {
         return link;
     }
 
-    public void setLink(Map link) {
+    public void setLink(Map<String, String> link) {
         this.link = link;
     }
 }

src/main/java/net/tccn/service/MetadataService.java

@@ -15,6 +15,7 @@ import org.redkale.net.http.RestService;
 
 import javax.annotation.Resource;
 import java.util.List;
+import java.util.Map;
 import java.util.logging.Level;
 import java.util.stream.Collectors;
 
@@ -279,6 +280,7 @@ public class MetadataService extends BaseService { //arango
     @RestMapping(name = "link_save", comment = "实体关系列表")
     public JBean linkSave(MetaLink link, @RestParam(name = "platToken") String token) {
         if (link.getKey() != null) {
+            link.find(String.format("UPDATE '%s' WITH { link:null  } IN MetaLink", link.getKey()), Map.class); //避免删除属性无效
             link.update();
         } else {
             link.save();