com.tinkerpop.blueprints.util

Class KeyIndexableGraphHelper

java.lang.Object

com.tinkerpop.blueprints.util.KeyIndexableGraphHelper

public class KeyIndexableGraphHelper
extends Object

Author:

Marko A. Rodriguez (http://markorodriguez.com)

Constructor Summary

Constructors

Constructor and Description
KeyIndexableGraphHelper()

Method Summary

Methods

Modifier and Type	Method and Description
static long	reIndexElements(Graph graph, Iterable<? extends Element> elements, Set<String> keys) For those graphs that do no support automatic reindexing of elements when a key is provided for indexing, this method can be used to simulate that behavior.

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyIndexableGraphHelper

public KeyIndexableGraphHelper()

Method Detail

reIndexElements

public static long reIndexElements(Graph graph,
                   Iterable<? extends Element> elements,
                   Set<String> keys)

For those graphs that do no support automatic reindexing of elements when a key is provided for indexing, this method can be used to simulate that behavior. The elements in the graph are iterated and their properties (for the provided keys) are removed and then added. Be sure that the key indices have been created prior to calling this method so that they can pick up the property mutations calls. Finally, if the graph is a TransactionalGraph, then a 1000 mutation buffer is used for each commit.

Parameters:

graph - the graph containing the provided elements

elements - the elements to index into the key indices

keys - the keys of the key indices

Returns:

the number of element properties that were indexed