com.hazelcast.config

Class MapIndexConfig

java.lang.Object

com.hazelcast.config.MapIndexConfig

Direct Known Subclasses:

MapIndexConfigReadOnly

public class MapIndexConfig
extends Object

Contains the configuration for an index in a map. This class should be used in combination with the MapConfig. The reason to create an map index is to speed up searches for particular map entries.

Constructor Summary

Constructors

Constructor and Description
MapIndexConfig() Creates a MapIndexConfig without an attribute and with ordered set to false.
MapIndexConfig(MapIndexConfig config)
MapIndexConfig(String attribute, boolean ordered) Creates a MapIndexConfig with the given attribute and ordered setting.

Method Summary

Methods

Modifier and Type	Method and Description
MapIndexConfigReadOnly	getAsReadOnly()
String	getAttribute() Gets the attribute that is going to be indexed.
boolean	isOrdered() Checks if the index should be ordered.
MapIndexConfig	setAttribute(String attribute) Sets the attribute that is going to be indexed.
MapIndexConfig	setOrdered(boolean ordered) Configures the index to be ordered or not ordered.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

MapIndexConfig

public MapIndexConfig()

Creates a MapIndexConfig without an attribute and with ordered set to false.

MapIndexConfig

public MapIndexConfig(String attribute,
              boolean ordered)

Creates a MapIndexConfig with the given attribute and ordered setting.

Parameters:

attribute - the attribute that is going to be indexed.

ordered - true if the index is ordered.

See Also:

setOrdered(boolean), setAttribute(String)

MapIndexConfig

public MapIndexConfig(MapIndexConfig config)

Method Detail

getAsReadOnly

public MapIndexConfigReadOnly getAsReadOnly()

getAttribute

public String getAttribute()

Gets the attribute that is going to be indexed. If no attribute is set, null is returned.

Returns:

the attribute to be indexed.

See Also:

setAttribute(String)

setAttribute

public MapIndexConfig setAttribute(String attribute)

Sets the attribute that is going to be indexed.

Parameters:

attribute - the attribute that is going to be indexed.

Returns:

the updated MapIndexConfig.

Throws:

IllegalArgumentException - if attribute is null or an empty string.

isOrdered

public boolean isOrdered()

Checks if the index should be ordered.

Returns:

true if ordered, false otherwise.

See Also:

setOrdered(boolean)

setOrdered

public MapIndexConfig setOrdered(boolean ordered)

Configures the index to be ordered or not ordered. Some indices can be ordered, such as age. Sometimes you want to look for all people with an age equal or greater than X. In other cases an ordered index doesn't make sense, such as a phone number for a person.

Parameters:

ordered - if the index should be an ordered index.

Returns:

the updated MapIndexConfig.

toString

public String toString()

Overrides:

toString in class Object