Dear Fadi,
Thank you for your question. For deleting connectors with the command DELETE_CONNECTOR you need the id of the connector (1) or the source-object-id and the target-object-id (2). Below you can find an example for the both scenarios.
1) Delete connectors with relation-id
1ON_EVENT "AfterEditAttributeValue" {
2SET id_ModelId: (modelid)
3SET id_InstId: (instid)
4SET id_AttrId: (attrid)
5
6CC "Core" GET_CLASS_ID classname:"A"
7CC "Core" GET_ATTR_ID classid: (classid) attrname:"Table"
8SET nTableAttrId: (attrid)
9
10#Trigger Event if attribute "Table" is editted
11 IF (nTableAttrId=id_AttrId) {
12 CC "Core" GET_OBJ_NAME objid: (id_InstId)
13 SET sObjName: (objname)
14
15#Query the relation ids of the outgoing "RelatedTo"-relations from the current instance
16 CC "AQL" EVAL_AQL_EXPRESSION expr: ("{\"" + sObjName + "\"} -> <\"RelatedTo\">" ) modelid: (id_ModelId)
17 SET s_RelationIds: (objids)
18
19#Delete "RelatedTo"-relations which are outgoing from the current object
20 FOR i in: (s_RelationIds) {
21 CC "Core" DELETE_CONNECTOR modelid: (id_ModelId) objid: (VAL i)
22 }
23 }
24}
2) Delete Connectors with from-object-id and to-object-id
1ON_EVENT "AfterEditAttributeValue" {
2SET id_ModelId: (modelid)
3SET id_InstId: (instid)
4SET id_AttrId: (attrid)
5
6CC "Core" GET_CLASS_ID classname:"A"
7CC "Core" GET_ATTR_ID classid: (classid) attrname:"Table"
8SET nTableAttrId: (attrid)
9
10#Trigger Event if attribute "Table" is editted
11 IF (nTableAttrId=id_AttrId) {
12 CC "Core" GET_CLASS_ID relation classname:"RelatedTo"
13 SET nRelatedToClassId: (classid)
14 CC "Core" GET_OBJ_NAME objid: (id_InstId)
15 SET sObjName: (objname)
16
17#Query the target objects of the current instance
18 CC "AQL" EVAL_AQL_EXPRESSION expr: ("{\"" + sObjName + "\"} -> \"RelatedTo\"" ) modelid: (id_ModelId)
19 SET s_RelationIds: (objids)
20
21#Delete "RelatedTo"-relations which are outgoing from the current object
22 FOR i in: (s_RelationIds) {
23 CC "Core" DELETE_CONNECTOR modelid: (id_ModelId) fromobjid: (id_InstId) toobjid: (VAL i) classid: (nRelatedToClassId)}
24 }
25 }
26}
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