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[HER-1762] H3 performance tuning

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* KeyedProperties.java
    avoid allocation hotspot shown by profiling (creating iterator for empty collection)
This commit is contained in:
gojomo
2010-06-18 02:37:42 +00:00
parent e83a6eceed
commit 4875135dc9
1 changed files with 9 additions and 7 deletions
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commons/src/main/java/org/archive/spring/KeyedProperties.java
+9 -7
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@@ -56,13 +56,15 @@ public class KeyedProperties extends ConcurrentHashMap<String,Object> {
* @return discovered override, or local value
*/
public Object get(String key) {
for(OverlayContext ocontext: threadOverrides.get()) {
for(String name: ocontext.getOverlayNames()) {
Map<String,Object> m = ocontext.getOverlayMap(name);
for(String ok : getOverrideKeys(key)) {
Object val = m.get(ok);
if(val!=null) {
return val;
if(!threadOverrides.get().isEmpty()) {
for(OverlayContext ocontext: threadOverrides.get()) {
for(String name: ocontext.getOverlayNames()) {
Map<String,Object> m = ocontext.getOverlayMap(name);
for(String ok : getOverrideKeys(key)) {
Object val = m.get(ok);
if(val!=null) {
return val;
}
}
}
}