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Performance enhancement for big group entry, 231623

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etsai%netscape.com 2004-03-03 15:09:59 +00:00
parent 58db1d9fd5
commit 4ffb62d146
1 changed files with 32 additions and 6 deletions
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38
directory/java-sdk/ldapsp/com/netscape/jndi/ldap/AttributesImpl.java
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@ -18,6 +18,7 @@
* Rights Reserved.
*
* Contributor(s):
* Luke (lukemz@onemodel.org)
*/
package com.netscape.jndi.ldap;
@ -189,12 +190,37 @@ class AttributesImpl implements Attributes {
}
else {
enumVals = attr.getStringValues();
}
if (enumVals != null) {
while ( enumVals.hasMoreElements() ) {
jndiAttr.add(enumVals.nextElement());
}
}
}
/* Performance enhancement for an attribute with many values.
* If number of value over threshold, use TreeSet to quickly
* eliminate value duplication. Locally extends JNDI attribute
* to pass TreeSet directly to Vector of JNDI attribute.
*/
if (attr.size() < 50 ) {
if (enumVals != null) {
while ( enumVals.hasMoreElements() ) {
jndiAttr.add(enumVals.nextElement());
}
}
}
else {
/* A local class to allow constructing a JNDI attribute
* from a TreeSet.
*/
class BigAttribute extends BasicAttribute {
public BigAttribute (String id, TreeSet val) {
super(id);
values = new Vector (val);
}
}
TreeSet valSet = new TreeSet();
if (enumVals != null) {
while ( enumVals.hasMoreElements() ) {
valSet.add(enumVals.nextElement());
}
}
jndiAttr = new BigAttribute(attr.getName(), valSet);
}
return jndiAttr;
}