/**
* CloudGraph Community Edition (CE) License
*
* This is a community release of CloudGraph, a dual-license suite of
* Service Data Object (SDO) 2.1 services designed for relational and
* big-table style "cloud" databases, such as HBase and others.
* This particular copy of the software is released under the
* version 2 of the GNU General Public License. CloudGraph was developed by
* TerraMeta Software, Inc.
*
* Copyright (c) 2013, TerraMeta Software, Inc. All rights reserved.
*
* General License information can be found below.
*
* This distribution may include materials developed by third
* parties. For license and attribution notices for these
* materials, please refer to the documentation that accompanies
* this distribution (see the "Licenses for Third-Party Components"
* appendix) or view the online documentation at
* <http://cloudgraph.org/licenses/>.
*/
package org.cloudgraph.hbase.io;
import org.cloudgraph.state.StateMarshalingContext;
/**
* Encapsulates one or more
* graph table operation components for federation across
* multiple physical tables and/or physical table rows.
* @see org.cloudgraph.hbase.io.GraphTableReader
* @see org.cloudgraph.hbase.io.GraphTableWriter
* @see org.cloudgraph.state.GraphTable
* @author Scott Cinnamond
* @since 0.5.1
*/
public interface DistributedOperation {
/**
* Returns true if only one table operation exists
* with only one associated (root) type for this
* operation.
* <p>
* 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.
* </p>
* @return true if only one table operation exists
* with only one associated (root) type for this
* operation.
*/
public boolean hasSingleRootType();
/**
* Returns the marshalling context for this operation.
* @return the marshalling context for this operation
*/
public StateMarshalingContext getMarshallingContext();
}