Graph Indices Helpers - datablend/blueprints GitHub Wiki

A “helper class” in Blueprints is provided in the com.tinkerpop.blueprints.pgm.util package. Helper classes provide (usually) static methods that yield high-level support for manipulating various Blueprints objects. Of particular interest to this page of documentation, there are a collection of helper classes for handling indices.

AutomaticIndexHelper provides high-level methods for adding, removing, and reindexing elements in an AutomaticIndex. Here is an example.

graph = TinkerGraphFactory.createTinkerGraph();
indexKeys = new HashSet<String>();
indexKeys.add("name");
index = graph.createAutomaticIndex("test-idx", Vertex.class, indexKeys);
index.get("name","marko"); // returns an empty iterator
index = AutomaticIndexHelper.reIndexElements(graph, index, graph.getVertices()); // reindex all the vertices in the graph
index.get("name","marko"); // returns an iterator with v[1] in it