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Some very simple improvements regarding ArrayList

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stsypanov
2019-02-14 18:31:27 +02:00
committed by Juergen Hoeller
parent 5e0cd9fb60
commit 92053bb84e
4 changed files with 12 additions and 11 deletions
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12
spring-messaging/src/main/java/org/springframework/messaging/support/MessageHeaderAccessor.java
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@@ -20,6 +20,7 @@ import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@@ -373,12 +374,13 @@ public class MessageHeaderAccessor {
}
private List<String> getMatchingHeaderNames(String pattern, @Nullable Map<String, Object> headers) {
if (headers == null) {
return Collections.emptyList();
}
List<String> matchingHeaderNames = new ArrayList<>();
if (headers != null) {
for (String key : headers.keySet()) {
if (PatternMatchUtils.simpleMatch(pattern, key)) {
matchingHeaderNames.add(key);
}
for (String key : headers.keySet()) {
if (PatternMatchUtils.simpleMatch(pattern, key)) {
matchingHeaderNames.add(key);
}
}
return matchingHeaderNames;