com.inductiveautomation.ignition.common.sqltags.history.cache

Class CachePolicy

java.lang.Object

com.inductiveautomation.ignition.common.sqltags.history.cache.CachePolicy

public class CachePolicy
extends java.lang.Object

These are the settings for the cache.

Constructor Summary

Constructors

Constructor and Description
CachePolicy()

Method Summary

Modifier and Type	Method and Description
boolean	areWindowsCompatible(double windowA, double windowB) Calculates the percentage difference between the windows and sees if it's acceptable according to the set threshold (default 10%).
long	getBucketSortFrequency() Returns the time, in milliseconds, between potential sorts of the cache buckets.
double	getCompatibleWindowThreashold() Returns the % diff that window sizes are allowed to be off in order to match.
long	getMaxCacheSizeBytes() The maximum size of the cache, in bytes.
void	setBucketSortFrequency(long bucketSortFrequency)
void	setCompatibleWindowThreashold(double compatibleWindowThreashold)
void	setMaxCacheSizeBytes(long value)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CachePolicy

public CachePolicy()

Method Detail

getCompatibleWindowThreashold

public double getCompatibleWindowThreashold()

Returns the % diff that window sizes are allowed to be off in order to match.

setCompatibleWindowThreashold

public void setCompatibleWindowThreashold(double compatibleWindowThreashold)

areWindowsCompatible

public boolean areWindowsCompatible(double windowA,
                                    double windowB)

Calculates the percentage difference between the windows and sees if it's acceptable according to the set threshold (default 10%). Also returns true if both window sizes are 0.

getBucketSortFrequency

public long getBucketSortFrequency()

Returns the time, in milliseconds, between potential sorts of the cache buckets. Frequent sorting can help improve the accuracy of the relevancy scores during ejection, but will take more processing time.

setBucketSortFrequency

public void setBucketSortFrequency(long bucketSortFrequency)

getMaxCacheSizeBytes

public long getMaxCacheSizeBytes()

The maximum size of the cache, in bytes.

setMaxCacheSizeBytes

public void setMaxCacheSizeBytes(long value)