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https://issues.apache.org/jira/browse/BEAM-4449?focusedWorklogId=109096&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-109096
]
ASF GitHub Bot logged work on BEAM-4449:
----------------------------------------
Author: ASF GitHub Bot
Created on: 05/Jun/18 14:54
Start Date: 05/Jun/18 14:54
Worklog Time Spent: 10m
Work Description: kennknowles commented on a change in pull request
#5544: [BEAM-4449] Replace project and filter with calc
URL: https://github.com/apache/beam/pull/5544#discussion_r193103018
##########
File path:
sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/interpreter/BeamSqlFnExecutor.java
##########
@@ -123,24 +126,29 @@
* evaluated against the {@link Row}.
*/
public class BeamSqlFnExecutor implements BeamSqlExpressionExecutor {
- protected List<BeamSqlExpression> exps;
-
- public BeamSqlFnExecutor(BeamRelNode relNode) {
- this.exps = new ArrayList<>();
- if (relNode instanceof BeamFilterRel) {
- BeamFilterRel filterNode = (BeamFilterRel) relNode;
- RexNode condition = filterNode.getCondition();
- exps.add(buildExpression(condition));
- } else if (relNode instanceof BeamProjectRel) {
- BeamProjectRel projectNode = (BeamProjectRel) relNode;
- List<RexNode> projects = projectNode.getProjects();
- for (RexNode rexNode : projects) {
- exps.add(buildExpression(rexNode));
- }
- } else {
- throw new UnsupportedOperationException(
- String.format("%s is not supported yet!",
relNode.getClass().toString()));
- }
+ private List<BeamSqlExpression> exprs;
+ private BeamSqlExpression condition;
+ private List<BeamSqlExpression> projects;
+
+ public BeamSqlFnExecutor(RexProgram program) {
+ this.exprs =
+ program
+ .getExprList()
+ .stream()
+ .map(BeamSqlFnExecutor::buildExpression)
+ .collect(Collectors.toList());
+
+ this.condition =
Review comment:
Yes, done.
And that is exactly right. A Calc runs a RexProgram, which is a list of
projections plus a filter combined into one thing, because it is easier to
optimize than project and filter.
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Issue Time Tracking
-------------------
Worklog Id: (was: 109096)
Time Spent: 1h 50m (was: 1h 40m)
> Use Calc instead of Project and Filter separately
> -------------------------------------------------
>
> Key: BEAM-4449
> URL: https://issues.apache.org/jira/browse/BEAM-4449
> Project: Beam
> Issue Type: Improvement
> Components: dsl-sql
> Reporter: Kenneth Knowles
> Assignee: Kenneth Knowles
> Priority: Major
> Time Spent: 1h 50m
> Remaining Estimate: 0h
>
> Calcite has a combined Calc operator that is amenable to more optimization,
> and also means less code to manage as we adjust how the operators/expressions
> are implemented.
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