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## org.neo4j.graphdb.index
Class IndexImplementation

    java.lang.Object
      org.neo4j.graphdb.index.IndexImplementation

    public abstract class IndexImplementation

extends Object

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

Author:
  Mattias Persson

Constructor Summary
`IndexImplementation()`

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

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### IndexImplementation

    public IndexImplementation()

Method Detail

### getDataSourceName

    public abstract 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

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

  Returns an `Index` for `Node`s 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

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

  Returns an `Index` for `Relationship`s 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

    public abstract 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

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

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Copyright © 2011 The Neo4j Graph Database Project. All Rights Reserved.