org.apache.gora.mongodb.filters

Class MongoFilterUtil<K,T extends PersistentBase>

java.lang.Object

org.apache.gora.mongodb.filters.MongoFilterUtil<K,T>

public class MongoFilterUtil<K,T extends PersistentBase>
extends Object

Manage creation of filtering Query using configured factories.

You can use "gora.mongodb.filter.factories" parameter to change factories implementations used.

Author:

Damien Raude-Morvan

See Also:

setFilter(com.mongodb.DBObject, org.apache.gora.filter.Filter, org.apache.gora.mongodb.store.MongoStore)

Field Summary

Fields

Modifier and Type	Field and Description
static String	MONGO_FILTER_FACTORIES_PARAMETER Configuration parameter which allow override of FilterFactory used.
static String	MONGO_FILTERS_DEFAULT_FACTORY Default implementation class for FilterFactory.

Constructor Summary

Constructors

Constructor and Description
MongoFilterUtil(org.apache.hadoop.conf.Configuration conf)

Method Summary

Methods

Modifier and Type	Method and Description
FilterFactory<K,T>	getFactory(Filter<K,T> filter)
boolean	setFilter(com.mongodb.DBObject query, Filter<K,T> filter, MongoStore<K,T> store) Set a filter on the query.

Methods inherited from class java.lang.Object

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

Field Detail

MONGO_FILTERS_DEFAULT_FACTORY

public static final String MONGO_FILTERS_DEFAULT_FACTORY

Default implementation class for FilterFactory.

See Also:

Constant Field Values

MONGO_FILTER_FACTORIES_PARAMETER

public static final String MONGO_FILTER_FACTORIES_PARAMETER

Configuration parameter which allow override of FilterFactory used.

See Also:

Constant Field Values

Constructor Detail

MongoFilterUtil

public MongoFilterUtil(org.apache.hadoop.conf.Configuration conf)
                throws GoraException

Throws:

GoraException

Method Detail

getFactory

public FilterFactory<K,T> getFactory(Filter<K,T> filter)

setFilter

public boolean setFilter(com.mongodb.DBObject query,
                Filter<K,T> filter,
                MongoStore<K,T> store)

Set a filter on the query. It translates a Gora filter to a MongoDB filter.

Parameters:

query - The Mongo Query

filter - The Gora filter.

store - The MongoStore.

Returns:

if remote filter is successfully applied.