wgy8283335 commented on a change in pull request #11930:
URL: https://github.com/apache/shardingsphere/pull/11930#discussion_r711673344
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File path:
shardingsphere-infra/shardingsphere-infra-optimize/src/main/java/org/apache/shardingsphere/infra/optimize/ShardingSphereOptimizer.java
##########
@@ -49,16 +61,27 @@ public RelNode optimize(final String sql) throws
SQLParsingException {
ShardingSphereSQLParserEngine sqlParserEngine = new
ShardingSphereSQLParserEngine(DatabaseTypeRegistry.getTrunkDatabaseTypeName(context.getDatabaseType()));
SqlNode sqlNode =
SqlNodeConvertEngine.convert(sqlParserEngine.parse(sql, true));
SqlNode validNode = context.getValidator().validate(sqlNode);
+ RelDataType resultType =
context.getValidator().getValidatedNodeType(sqlNode);
RelNode logicPlan =
context.getRelConverter().convertQuery(validNode, false, true).rel;
- return optimize(logicPlan);
+ return optimize(logicPlan, resultType);
} catch (final UnsupportedOperationException ex) {
throw new ShardingSphereException(ex);
}
}
- private RelNode optimize(final RelNode logicPlan) {
+ private RelNode optimize(final RelNode logicPlan, final RelDataType
resultType) {
RelOptPlanner planner =
context.getRelConverter().getCluster().getPlanner();
- planner.setRoot(planner.changeTraits(logicPlan,
context.getRelConverter().getCluster().traitSet().replace(EnumerableConvention.INSTANCE)));
- return planner.findBestExp();
+ RelNode node = planner.changeTraits(logicPlan,
context.getRelConverter().getCluster().traitSet().replace(EnumerableConvention.INSTANCE));
+ RelRoot root = constructRoot(node, resultType);
+ FederateOptimizer optimizer = new FederateOptimizer(planner);
+ RelRoot result = optimizer.optimize(root);
+ return result.rel;
+ }
+
+ private RelRoot constructRoot(final RelNode node, final RelDataType
resultType) {
+ final RelDataType rowType = node.getRowType();
+ final List<Pair<Integer, String>> fields =
Pair.zip(ImmutableIntList.identity(rowType.getFieldCount()),
rowType.getFieldNames());
Review comment:
ok.
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