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[Optimization] Init map size #2539

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[Optimization] Init map size #2539

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7642585
Init map size
Oliverwqcwrw Apr 26, 2022
1a9e632
set loadfactor
Oliverwqcwrw Apr 28, 2022
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2 changes: 1 addition & 1 deletion src/main/java/org/apache/ibatis/builder/MapperBuilderAssistant.java
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Original file line number Diff line number Diff line change
Expand Up @@ -232,7 +232,7 @@ public Discriminator buildDiscriminator(
null,
null,
false);
Map<String, String> namespaceDiscriminatorMap = new HashMap<>();
Map<String, String> namespaceDiscriminatorMap = new HashMap<>(discriminatorMap.size(), 1);
for (Map.Entry<String, String> e : discriminatorMap.entrySet()) {
String resultMap = e.getValue();
resultMap = applyCurrentNamespace(resultMap, true);
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2 changes: 1 addition & 1 deletion src/main/java/org/apache/ibatis/builder/annotation/MapperAnnotationBuilder.java
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Expand Up @@ -282,7 +282,7 @@ private Discriminator applyDiscriminator(String resultMapId, Class<?> resultType
Class<? extends TypeHandler<?>> typeHandler = (Class<? extends TypeHandler<?>>)
(discriminator.typeHandler() == UnknownTypeHandler.class ? null : discriminator.typeHandler());
Case[] cases = discriminator.cases();
Map<String, String> discriminatorMap = new HashMap<>();
Map<String, String> discriminatorMap = new HashMap<>(cases.length, 1);
for (Case c : cases) {
String value = c.value();
String caseResultMapId = resultMapId + "-" + value;
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