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18 package org.apache.shardingsphere.sql.parser.sql.common.segment.generic.table;
19
20 import lombok.Getter;
21 import lombok.RequiredArgsConstructor;
22 import lombok.Setter;
23 import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.expr.subquery.SubquerySegment;
24 import org.apache.shardingsphere.sql.parser.sql.common.segment.generic.AliasSegment;
25 import org.apache.shardingsphere.sql.parser.sql.common.segment.generic.PivotSegment;
26 import org.apache.shardingsphere.sql.parser.sql.common.value.identifier.IdentifierValue;
27
28 import java.util.Optional;
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32
33 @RequiredArgsConstructor
34 @Getter
35 public final class SubqueryTableSegment implements TableSegment {
36
37 private final int startIndex;
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39 private final int stopIndex;
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41 private final SubquerySegment subquery;
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43 @Setter
44 private AliasSegment alias;
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46 @Setter
47 private PivotSegment pivot;
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49 @Override
50 public Optional<String> getAliasName() {
51 return null == alias ? Optional.empty() : Optional.ofNullable(alias.getIdentifier().getValue());
52 }
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54 @Override
55 public Optional<IdentifierValue> getAlias() {
56 return Optional.ofNullable(alias).map(AliasSegment::getIdentifier);
57 }
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64 public Optional<PivotSegment> getPivot() {
65 return Optional.ofNullable(pivot);
66 }
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68 @Override
69 public int getStartIndex() {
70 return startIndex;
71 }
72
73 @Override
74 public int getStopIndex() {
75 return null == alias ? stopIndex : alias.getStopIndex();
76 }
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83 public Optional<AliasSegment> getAliasSegment() {
84 return Optional.ofNullable(alias);
85 }
86 }