[ATLAS-3236] Relationship traversal through DSL search queries

• Type: New Feature
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: trunk
• Component/s: atlas-core
• Assignee: Kirankumar D G
• Reporter: Kirankumar D G
• Created: 25/May/19 03:08
• Updated: 27/May/19 08:08

Description

Enhance Atlas DSL grammar to support relationship traversal.

 

Examples:

from hive_db as db where db.name="hive_db_g_test_2" hasr hive_table as tb where tb.name="hive_table_g_test_2" hasr hive_column as c where  c.name="hive_column_g_test_2" and c is realm

 

query should be transformed into gremlin query as below

g.V().has('_typeName', 'hive_db').as('db').has('Asset.name', eq("hive_db_g_test_2")).bothE().bothV().has('typeName','hive_table').as('tb').has('Asset.name', eq("hive_table_g_test_2")).bothE().bothV().has('typeName','hive_column').as('c').and(.has('Asset.name', eq("hive_column_g_test_2")),.outE('classifiedAs').has('_name', within('realm')).outV()).dedup().limit(25).toList(