org.cloudgraph.hbase.graph

Interface HBaseGraphAssembler

All Superinterfaces:

org.plasma.sdo.access.DataGraphAssembler

All Known Implementing Classes:

DistributedAssembler, GraphAssembler, GraphSliceAssembler, ParallelGraphAssembler, ParallelGraphSliceAssembler

public interface HBaseGraphAssembler
extends org.plasma.sdo.access.DataGraphAssembler

Constructs a data graph starting with a given root SDO type based on a given HBase client result row the entire graph being found in the result row or potentially requiring additional scans depending on the assembler implementation.

Since every column key in HBase must be unique, and a data graph may contain any number of nodes, a column key factory is used both to persist as well as re-constitute a graph. A minimal amount of "state" information is therefore stored with each graph which maps user readable sequence numbers (which are used in column keys) to UUID values. The nodes of the resulting data graph are re-created with the original UUID values.

Since:

0.5.1

Author:

Scott Cinnamond

See Also:

StatefullColumnKeyFactory, PlasmaDataGraph, Result

Method Summary

Modifier and Type	Method and Description
void	assemble(CellValues resultRow) Re-constitutes a data graph from the given HBase client result (row).

Methods inherited from interface org.plasma.sdo.access.DataGraphAssembler

clear, getDataGraph

Method Detail

assemble

void assemble(CellValues resultRow)

Re-constitutes a data graph from the given HBase client result (row).

Parameters:

resultRow - the HBase client result (row).