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[Calcite Engine] Push down project and filter operator into index scan #3327
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Merged
LantaoJin
merged 4 commits into
opensearch-project:feature/calcite-engine
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qianheng-aws:feature/calcite-engine-push-down
Feb 21, 2025
+1,501
−104
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71 changes: 71 additions & 0 deletions
71
...in/java/org/opensearch/sql/opensearch/planner/physical/OpenSearchFilterIndexScanRule.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| /* | ||
| * Copyright OpenSearch Contributors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
| package org.opensearch.sql.opensearch.planner.physical; | ||
|
|
||
| import org.apache.calcite.plan.RelOptRuleCall; | ||
| import org.apache.calcite.plan.RelOptTable; | ||
| import org.apache.calcite.plan.RelRule; | ||
| import org.apache.calcite.rel.core.Filter; | ||
| import org.immutables.value.Value; | ||
| import org.opensearch.sql.opensearch.storage.OpenSearchIndex; | ||
| import org.opensearch.sql.opensearch.storage.scan.CalciteOpenSearchIndexScan; | ||
|
|
||
| /** Planner rule that push a {@link Filter} down to {@link CalciteOpenSearchIndexScan} */ | ||
| @Value.Enclosing | ||
| public class OpenSearchFilterIndexScanRule extends RelRule<OpenSearchFilterIndexScanRule.Config> { | ||
|
|
||
| /** Creates a OpenSearchFilterIndexScanRule. */ | ||
| protected OpenSearchFilterIndexScanRule(Config config) { | ||
| super(config); | ||
| } | ||
|
|
||
| protected static boolean test(CalciteOpenSearchIndexScan scan) { | ||
| final RelOptTable table = scan.getTable(); | ||
| return table.unwrap(OpenSearchIndex.class) != null; | ||
| } | ||
|
|
||
| @Override | ||
| public void onMatch(RelOptRuleCall call) { | ||
| if (call.rels.length == 2) { | ||
| // the ordinary variant | ||
| final Filter filter = call.rel(0); | ||
| final CalciteOpenSearchIndexScan scan = call.rel(1); | ||
| apply(call, filter, scan); | ||
| } else { | ||
| throw new AssertionError( | ||
| String.format( | ||
| "The length of rels should be %s but got %s", | ||
| this.operands.size(), call.rels.length)); | ||
| } | ||
| } | ||
|
|
||
| protected void apply(RelOptRuleCall call, Filter filter, CalciteOpenSearchIndexScan scan) { | ||
| if (scan.pushDownFilter(filter)) { | ||
| call.transformTo(scan); | ||
| } | ||
| } | ||
|
|
||
| /** Rule configuration. */ | ||
| @Value.Immutable | ||
| public interface Config extends RelRule.Config { | ||
| /** Config that matches Filter on CalciteOpenSearchIndexScan. */ | ||
| Config DEFAULT = | ||
| ImmutableOpenSearchFilterIndexScanRule.Config.builder() | ||
| .build() | ||
| .withOperandSupplier( | ||
| b0 -> | ||
| b0.operand(Filter.class) | ||
| .oneInput( | ||
| b1 -> | ||
| b1.operand(CalciteOpenSearchIndexScan.class) | ||
| .predicate(OpenSearchFilterIndexScanRule::test) | ||
| .noInputs())); | ||
|
|
||
| @Override | ||
| default OpenSearchFilterIndexScanRule toRule() { | ||
| return new OpenSearchFilterIndexScanRule(this); | ||
| } | ||
| } | ||
| } | ||
23 changes: 23 additions & 0 deletions
23
...ch/src/main/java/org/opensearch/sql/opensearch/planner/physical/OpenSearchIndexRules.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| /* | ||
| * Copyright OpenSearch Contributors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
|
||
| package org.opensearch.sql.opensearch.planner.physical; | ||
|
|
||
| import com.google.common.collect.ImmutableList; | ||
| import java.util.List; | ||
| import org.apache.calcite.plan.RelOptRule; | ||
|
|
||
| public class OpenSearchIndexRules { | ||
| private static final OpenSearchProjectIndexScanRule PROJECT_INDEX_SCAN = | ||
| OpenSearchProjectIndexScanRule.Config.DEFAULT.toRule(); | ||
| private static final OpenSearchFilterIndexScanRule FILTER_INDEX_SCAN = | ||
| OpenSearchFilterIndexScanRule.Config.DEFAULT.toRule(); | ||
|
|
||
| public static final List<RelOptRule> OPEN_SEARCH_INDEX_SCAN_RULES = | ||
| ImmutableList.of(PROJECT_INDEX_SCAN, FILTER_INDEX_SCAN); | ||
|
|
||
| // prevent instantiation | ||
| private OpenSearchIndexRules() {} | ||
| } |
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