com.hazelcast.query.impl

Class AttributeIndexRegistry

java.lang.Object

com.hazelcast.query.impl.AttributeIndexRegistry

public class AttributeIndexRegistry
extends Object

Maintains a registry of single-attribute indexes.

The main purpose of this class is to maintain decorators around ordered composite indexes to allow transparent querying on their first components.

Constructor Summary

Constructors

Constructor and Description
AttributeIndexRegistry()

Method Summary

Modifier and Type	Method and Description
void	clear() Clears this registry by unregistering all previously registered indexes.
InternalIndex	match(String attribute, QueryContext.IndexMatchHint matchHint) Matches an index for the given attribute and match hint.
void	register(InternalIndex index) Registers the given index in this registry.

Methods inherited from class java.lang.Object

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

Constructor Detail

AttributeIndexRegistry

public AttributeIndexRegistry()

Method Detail

register

public void register(InternalIndex index)

Registers the given index in this registry.

This method expects external thread access synchronization applied, so there is no more than one writer at any given time.

Parameters:

index - the index to register.

See Also:

Indexes.addOrGetIndex(java.lang.String, boolean)

match

public InternalIndex match(String attribute,
                           QueryContext.IndexMatchHint matchHint)

Matches an index for the given attribute and match hint.

Parameters:

attribute - the attribute to match an index for.

matchHint - the match hint; QueryContext.IndexMatchHint.EXACT_NAME is not supported by this method.

Returns:

the matched index or null if nothing matched.

See Also:

QueryContext.IndexMatchHint

clear

public void clear()

Clears this registry by unregistering all previously registered indexes.