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Revise LinkedCaseInsensitiveMap's lazy key/value/entry collections 

Closes gh-22926
This commit is contained in:
Juergen Hoeller 2019-05-08 17:52:28 +02:00 committed by Sam Brannen
parent 60976e4116
commit c8f20815ef
1 changed files with 10 additions and 8 deletions
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18
spring-core/src/main/java/org/springframework/util/LinkedCaseInsensitiveMap.java
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@ -56,13 +56,13 @@ public class LinkedCaseInsensitiveMap<V> implements Map<String, V>, Serializable
private final Locale locale;
@Nullable
private transient Set<String> keySet;
private transient volatile Set<String> keySet;
@Nullable
private transient Collection<V> values;
private transient volatile Collection<V> values;
@Nullable
private transient Set<Entry<String, V>> entrySet;
private transient volatile Set<Entry<String, V>> entrySet;
/**
@ -465,7 +465,7 @@ public class LinkedCaseInsensitiveMap<V> implements Map<String, V>, Serializable
}
private class EntryIterator {
private abstract class EntryIterator<T> implements Iterator<T> {
private final Iterator<Entry<String, V>> delegate;
@ -476,16 +476,18 @@ public class LinkedCaseInsensitiveMap<V> implements Map<String, V>, Serializable
this.delegate = targetMap.entrySet().iterator();
}
public Entry<String, V> nextEntry() {
protected Entry<String, V> nextEntry() {
Entry<String, V> entry = this.delegate.next();
this.last = entry;
return entry;
}
@Override
public boolean hasNext() {
return this.delegate.hasNext();
}
@Override
public void remove() {
this.delegate.remove();
if (this.last != null) {
@ -496,7 +498,7 @@ public class LinkedCaseInsensitiveMap<V> implements Map<String, V>, Serializable
}
private class KeySetIterator extends EntryIterator implements Iterator<String> {
private class KeySetIterator extends EntryIterator<String> {
@Override
public String next() {
@ -505,7 +507,7 @@ public class LinkedCaseInsensitiveMap<V> implements Map<String, V>, Serializable
}
private class ValuesIterator extends EntryIterator implements Iterator<V> {
private class ValuesIterator extends EntryIterator<V> {
@Override
public V next() {
@ -514,7 +516,7 @@ public class LinkedCaseInsensitiveMap<V> implements Map<String, V>, Serializable
}
private class EntrySetIterator extends EntryIterator implements Iterator<Entry<String, V>> {
private class EntrySetIterator extends EntryIterator<Entry<String, V>> {
@Override
public Entry<String, V> next() {