1 | /* | |
2 | * Copyright OpenSearch Contributors | |
3 | * SPDX-License-Identifier: Apache-2.0 | |
4 | */ | |
5 | ||
6 | package org.opensearch.sql.analysis; | |
7 | ||
8 | import lombok.RequiredArgsConstructor; | |
9 | import org.opensearch.sql.ast.AbstractNodeVisitor; | |
10 | import org.opensearch.sql.ast.expression.Alias; | |
11 | import org.opensearch.sql.ast.expression.HighlightFunction; | |
12 | import org.opensearch.sql.ast.expression.UnresolvedExpression; | |
13 | import org.opensearch.sql.expression.Expression; | |
14 | import org.opensearch.sql.planner.logical.LogicalHighlight; | |
15 | import org.opensearch.sql.planner.logical.LogicalPlan; | |
16 | ||
17 | /** | |
18 | * Analyze the highlight in the {@link AnalysisContext} to construct the {@link | |
19 | * LogicalPlan}. | |
20 | */ | |
21 | @RequiredArgsConstructor | |
22 | public class HighlightAnalyzer extends AbstractNodeVisitor<LogicalPlan, AnalysisContext> { | |
23 | private final ExpressionAnalyzer expressionAnalyzer; | |
24 | private final LogicalPlan child; | |
25 | ||
26 | public LogicalPlan analyze(UnresolvedExpression projectItem, AnalysisContext context) { | |
27 | LogicalPlan highlight = projectItem.accept(this, context); | |
28 |
2
1. analyze : negated conditional → KILLED 2. analyze : replaced return value with null for org/opensearch/sql/analysis/HighlightAnalyzer::analyze → KILLED |
return (highlight == null) ? child : highlight; |
29 | } | |
30 | ||
31 | @Override | |
32 | public LogicalPlan visitAlias(Alias node, AnalysisContext context) { | |
33 | UnresolvedExpression delegated = node.getDelegated(); | |
34 |
1
1. visitAlias : negated conditional → KILLED |
if (!(delegated instanceof HighlightFunction)) { |
35 | return null; | |
36 | } | |
37 | ||
38 | HighlightFunction unresolved = (HighlightFunction) delegated; | |
39 | Expression field = expressionAnalyzer.analyze(unresolved.getHighlightField(), context); | |
40 |
1
1. visitAlias : replaced return value with null for org/opensearch/sql/analysis/HighlightAnalyzer::visitAlias → KILLED |
return new LogicalHighlight(child, field, unresolved.getArguments()); |
41 | } | |
42 | } | |
Mutations | ||
28 |
1.1 2.2 |
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34 |
1.1 |
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40 |
1.1 |