Hi, I want to parse an Sql query and transform it to an optimized relational plan (not convert it to physical !!) using calcite rules based on my database schema and metadata. Right now, the only helpful example I have found for my purpose is taken from https://github.com/milinda/samza-sql/blob/master/samza-sql-planner/src/main/java/org/apache/samza/sql/planner/QueryPlanner.java , in which a simple Planner is used for parsing and validating Sql and a HepPlanner is used for searching for an optimized plan based on imported rules.
Is there any way to use in my case the VolcanoPlanner? The only examples I have seen so far from the test classes suggest that it should be used for converting relational expressions to physical ones. How can I make the Volcano Planner "see" my SchemaPlus schema ,when I can only define RelOptSchema? Can someone provide me with a complete example of using Volcano Planner and adding rules, such as FilterProjectTransposeRule.INSTANCE? Thanks in advance, George
