[CALCITE-2100] Ability not to use DriverManager to run only the planner

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.15.0
• Component/s: core
• Assignee: Unassigned
• Reporter: Enrico Olivelli
• Created: 19/Dec/17 13:49
• Updated: 22/Feb/19 01:20

Description

At this point:

org.apache.calcite.tools.Frameworks.withPrepare(Frameworks.java:156)
  at org.apache.calcite.tools.Frameworks.withPlanner(Frameworks.java:111)
  at org.apache.calcite.prepare.PlannerImpl.ready(PlannerImpl.java:145)
  at org.apache.calcite.prepare.PlannerImpl.parse(PlannerImpl.java:175)

we are going to use DriverManager to get a connection to "jdbc:calcite:", this is not very efficient and in some cases it can lead to errors if the o.a.c.jdbc.Driver has not been loaded.

It would be great to be able to skip this step and be able to use the Planner