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https://issues.apache.org/jira/browse/ATLAS-1082?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Madhan Neethiraj resolved ATLAS-1082.
-------------------------------------
Resolution: Abandoned
> In GET method, return type of the actual referenced entity, instead of the
> definined type
> -----------------------------------------------------------------------------------------
>
> Key: ATLAS-1082
> URL: https://issues.apache.org/jira/browse/ATLAS-1082
> Project: Atlas
> Issue Type: Improvement
> Reporter: Prasad S Madugundu
> Priority: Major
>
> If I GET an entity, the type name for the target of a reference is the
> defined type. If the actual target instance is a subclass of the defined
> type, then I would prefer to get the type of the sub-class, so that I can
> correctly process the referenced entity returned by the GET method.
> For example:
> I have a class definitions as follows:
> {noformat}
> {
> "typeName": "CommonObject",
> "definition": {
> "classTypes": [
> {
> "hierarchicalMetaTypeName":
> "org.apache.atlas.typesystem.types.ClassType",
> "typeName": "CommonObject",
> "attributeDefinitions": [
> {
> "name": "customProperties",
> "dataTypeName": "array<PropertyValue>",
> "multiplicity": "optional",
> "isComposite": true,
> "isUnique": false,
> "isIndexable": false,
> "reverseAttributeName": "fromObject"
> }
> ]
> }
> ]
> },
> }
> {
> "typeName": "PropertyValue",
> "definition": {
> "classTypes": [
> {
> "hierarchicalMetaTypeName":
> "org.apache.atlas.typesystem.types.ClassType",
> "typeName": "PropertyValue",
> "attributeDefinitions": [
> {
> "name": "definition",
> "dataTypeName": "PropertyDefinition",
> "multiplicity": "required",
> "isComposite": false,
> "isUnique": false,
> "isIndexable": false,
> "reverseAttributeName": null
> },
> ]
> }
> ]
> },
> }
> {
> "typeName": "CustomPropertyDefinition",
> "definition": {
> "classTypes": [
> {
> "superTypes": [
> "PropertyDefinition"
> ],
> "hierarchicalMetaTypeName":
> "org.apache.atlas.typesystem.types.ClassType",
> "typeName": "CustomPropertyDefinition",
> "attributeDefinitions": [
> {
> ...
> }
> ]
> }
> ]
> },
> }
> {noformat}
> If I GET an instance of subtype of CommonObject, I am getting the following :
> {noformat}
> {
> "definition": {
> "jsonClass":
> "org.apache.atlas.typesystem.json.InstanceSerialization$_Reference",
> "id": {
> "jsonClass":
> "org.apache.atlas.typesystem.json.InstanceSerialization$_Id",
> "id": "2bd5992f-2107-4863-a28e-21e5d9da2e5b",
> "version": 0,
> "typeName": "DataSet",
> "state": "ACTIVE"
> },
> "typeName": "DataSet",
> "values": {
> "customProperties": [
> {
> "jsonClass":
> "org.apache.atlas.typesystem.json.InstanceSerialization$_Reference",
> "id": {
> "jsonClass":
> "org.apache.atlas.typesystem.json.InstanceSerialization$_Id",
> "id": "c2f05c57-17be-4db3-9cf5-941b74c077eb",
> "version": 0,
> "typeName": "PropertyValue",
> "state": "ACTIVE"
> },
> "typeName": "PropertyValue",
> "values": {
> "definition": {
> "jsonClass":
> "org.apache.atlas.typesystem.json.InstanceSerialization$_Id",
> "id": "cd3cc767-fa82-4c8b-a5a7-0910f124f594",
> "version": 0,
> "typeName": "PropertyDefinition",
> "state": "ACTIVE"
> },
> },
> }
> ],
> },
> }
> }
> {noformat}
> Please note the type of cd3cc767-fa82-4c8b-a5a7-0910f124f594 in the above GET
> result is PropertyDefinition.
> But, the actual type of cd3cc767-fa82-4c8b-a5a7-0910f124f594 is
> CustomPropertyDefinition:
> {noformat}
> {
> "definition": {
> "jsonClass":
> "org.apache.atlas.typesystem.json.InstanceSerialization$_Reference",
> "id": {
> "jsonClass":
> "org.apache.atlas.typesystem.json.InstanceSerialization$_Id",
> "id": "cd3cc767-fa82-4c8b-a5a7-0910f124f594",
> "version": 0,
> "typeName": "OMAS_OMRSCustomPropertyDefinition",
> "state": "ACTIVE"
> },
> "typeName": "OMAS_OMRSCustomPropertyDefinition",
> "values": {
> },
> }
> }
> {noformat}
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