zabetak commented on a change in pull request #1869: [CALCITE-3868] Remove
redundant ruleSet and ruleNames in VolcanoPlanner
URL: https://github.com/apache/calcite/pull/1869#discussion_r398410186
##########
File path:
core/src/main/java/org/apache/calcite/plan/AbstractRelOptPlanner.java
##########
@@ -44,18 +44,13 @@
* Abstract base for implementations of the {@link RelOptPlanner} interface.
*/
public abstract class AbstractRelOptPlanner implements RelOptPlanner {
- //~ Static fields/initializers ---------------------------------------------
-
- /** Regular expression for integer. */
- private static final Pattern INTEGER_PATTERN = Pattern.compile("[0-9]+");
-
//~ Instance fields --------------------------------------------------------
/**
* Maps rule description to rule, just to ensure that rules' descriptions
* are unique.
*/
- private final Map<String, RelOptRule> mapDescToRule = new HashMap<>();
+ protected final Map<String, RelOptRule> mapDescToRule = new HashMap<>();
Review comment:
I think that in most cases the number of rules is not very big so I was
thinking that copying vs. `mapDescToRule.values()` is not going to have
significant performance overhead in the planning phase, thus, I tend to prefer
better encapsulation. Having that said, I do not have any concrete measures to
support my claims (just instinct that could be wrong) :)
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