org.neo4j.graphdb.index
Interface IndexImplementation

public interface IndexImplementation

A provider which can create and instantiate Indexs. An IndexImplementation is typically tied to one implementation, f.ex. lucene, http://lucene.apache.org/java.

Author:

Mattias Persson

Method Summary

boolean	configMatches(Map<String,String> storedConfig, Map<String,String> config)
Map<String,String>	fillInDefaults(Map<String,String> config) Fills in default configuration parameters for indexes provided from this index provider.
String	getDataSourceName() Returns the name of the XA data source coupled with this index provider.
Index<Node>	nodeIndex(String indexName, Map<String,String> config) Returns an Index for Nodes for the name indexName with the given config.
RelationshipIndex	relationshipIndex(String indexName, Map<String,String> config) Returns an Index for Relationships for the name indexName with the given config.

Method Detail

getDataSourceName

String getDataSourceName()

Returns the name of the XA data source coupled with this index provider.

Returns:

the name of the XA data source coupled with this index provider.

nodeIndex

Index<Node> nodeIndex(String indexName,
                      Map<String,String> config)

Returns an Index for Nodes for the name indexName with the given config. The config Map can contain any provider-implementation-specific data that can control how an index behaves.

Parameters:

indexName - the name of the index.

config - a Map of configuration parameters to use with the index. Parameters can be anything and are implementation-specific. This map represents how the configuration looks right now, they might be modified later using IndexManager.setConfiguration(Index, String, String) or IndexManager.removeConfiguration(Index, String).

Returns:

the Index corresponding to the indexName and config.

relationshipIndex

RelationshipIndex relationshipIndex(String indexName,
                                    Map<String,String> config)

Returns an Index for Relationships for the name indexName with the given config. The config Map can contain any provider-implementation-specific data that can control how an index behaves.

Parameters:

indexName - the name of the index.

config - a Map of configuration parameters to use with the index. Parameters can be anything and are implementation-specific. This map represents how the configuration looks right now, they might be modified later using IndexManager.setConfiguration(Index, String, String) or IndexManager.removeConfiguration(Index, String).

Returns:

the Index corresponding to the indexName and config. The return index is a RelationshipIndex with additional query methods for efficiently filtering hits with respect to start/end node of the relationships.

fillInDefaults

Map<String,String> fillInDefaults(Map<String,String> config)

Fills in default configuration parameters for indexes provided from this index provider.

Parameters:

config - the configuration map to complete with defaults.

Returns:

a Map filled with decent defaults for an index from this index provider.

configMatches

boolean configMatches(Map<String,String> storedConfig,
                      Map<String,String> config)