Mercurial > hg > blitz_stable
diff src/org/dancres/blitz/stats/InstanceCount.java @ 0:3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 21 Mar 2009 11:00:06 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/org/dancres/blitz/stats/InstanceCount.java Sat Mar 21 11:00:06 2009 +0000 @@ -0,0 +1,59 @@ +package org.dancres.blitz.stats; + +/** + <p>Tracks the number of instance of a particular type within a Blitz + instance. The instance count accounts for writes and takes but does not + account for lease expired entries because the cleanup of lease expired + entries is done lazily. Thus the instance counts should be treated as + a guide not an exact number.</p> + */ +public class InstanceCount implements Stat, StatGenerator { + private long theId = StatGenerator.UNSET_ID; + + private String theType; + private int theCount; + + public InstanceCount(String aType, int aCount) { + theType = aType; + theCount = aCount; + } + + private InstanceCount(long anId, String aType, int aCount) { + theId = anId; + theType = aType; + theCount = aCount; + } + + public void setId(long anId) { + theId = anId; + } + + public long getId() { + return theId; + } + + public synchronized Stat generate() { + InstanceCount myStat = new InstanceCount(theId, theType, theCount); + return myStat; + } + + public String getType() { + return theType; + } + + public int getCount() { + return theCount; + } + + public synchronized void wrote() { + ++theCount; + } + + public synchronized void took() { + --theCount; + } + + public String toString() { + return "Total instance of type " + theType + " is " + theCount; + } +}