Package org.infinispan.configuration.cache

Class QueryConfiguration

java.lang.Object

org.infinispan.commons.configuration.attributes.ConfigurationElement<QueryConfiguration>

org.infinispan.configuration.cache.QueryConfiguration

All Implemented Interfaces:

Matchable<QueryConfiguration>, Updatable<QueryConfiguration>

public class QueryConfiguration
extends ConfigurationElement<QueryConfiguration>

Configures query options and defaults

Field Summary

Fields

Modifier and Type	Field	Description
static final AttributeDefinition<Integer>	DEFAULT_MAX_RESULTS
static final AttributeDefinition<Integer>	HIT_COUNT_ACCURACY

Fields inherited from class org.infinispan.commons.configuration.attributes.ConfigurationElement

attributes, CHILDLESS, children, element, repeated

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	QueryConfiguration(AttributeSet attributes)

Method Summary

Modifier and Type	Method	Description
int	defaultMaxResults()	Limits the number of results returned by a query.
int	hitCountAccuracy()	Limit the required accuracy of the hit count for the indexed queries to an upper-bound.

Methods inherited from class org.infinispan.commons.configuration.attributes.ConfigurationElement

attributes, child, children, children, elementName, equals, findAttribute, hashCode, isModified, list, matches, toString, update, validateUpdate, write

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

DEFAULT_MAX_RESULTS

public static final AttributeDefinition<Integer> DEFAULT_MAX_RESULTS

HIT_COUNT_ACCURACY

public static final AttributeDefinition<Integer> HIT_COUNT_ACCURACY

Constructor Details

QueryConfiguration

protected QueryConfiguration(AttributeSet attributes)

Method Details

defaultMaxResults

public int defaultMaxResults()

Limits the number of results returned by a query. Applies to indexed, non-indexed, and hybrid queries. Setting the default-max-results significantly improves the performance of queries that don't have an explicit limit set.

hitCountAccuracy

public int hitCountAccuracy()

Limit the required accuracy of the hit count for the indexed queries to an upper-bound. Setting the hit-count-accuracy could improve the performance of queries targeting large data sets. For optimal performances set this value not much above the expected hit count. If you do not require accurate hit counts, set it to a low value.