org.cloudgraph.hbase.io

Interface DistributedGraphOperation

All Known Subinterfaces:

DistributedReader, DistributedWriter

All Known Implementing Classes:

DistributedGraphReader, DistributedGraphWriter

public interface DistributedGraphOperation

Encapsulates one or more graph table operation components for federation across multiple physical tables and/or physical table rows.

Since:

0.5.1

Author:

Scott Cinnamond

See Also:

GraphTableReader, GraphTableWriter, GraphTable

Method Summary

Modifier and Type	Method and Description
void	close() Closes tables and connections.
Connection	getConnection() returns the shared connection for the operation
StoreMappingContext	getMappingContext()
boolean	hasSingleRootType() Returns true if only one table operation exists with only one associated (root) type for this operation.

Method Detail

hasSingleRootType

boolean hasSingleRootType()

Returns true if only one table operation exists with only one associated (root) type for this operation.

Note: because there may be a single root type within an operational context, this does not mean there is no federation involved. A type is a metadata entity, and there may be many (data object) instances of the type within a graph operation.

Returns:

true if only one table operation exists with only one associated (root) type for this operation.

getConnection

Connection getConnection()

returns the shared connection for the operation

getMappingContext

StoreMappingContext getMappingContext()

close

void close()

Closes tables and connections.