Package com.alibaba.graphscope.app

Interface DefaultAppBase<OID_T,VID_T,VDATA_T,EDATA_T,C extends DefaultContextBase<OID_T,VID_T,VDATA_T,EDATA_T>>

Type Parameters:

OID_T - original id type

VID_T - vertex id type

VDATA_T - vertex data type

EDATA_T - edge data type

C - context type

All Superinterfaces:

AppBase<OID_T,VID_T,VDATA_T,EDATA_T,C>

All Known Implementing Classes:

GiraphComputationAdaptor

public interface DefaultAppBase<OID_T,VID_T,VDATA_T,EDATA_T,C extends DefaultContextBase<OID_T,VID_T,VDATA_T,EDATA_T>>
extends AppBase<OID_T,VID_T,VDATA_T,EDATA_T,C>

The base interface for all sequential PIE apps which work along with IFragment and DefaultMessageManager

To define your sequential graph algorithms, you should implement this interface and provide the corresponding implementation for PEval(IFragment, DefaultContextBase, DefaultMessageManager) and IncEval(IFragment, DefaultContextBase, DefaultMessageManager)

User-defined app shall work along with user-defined context, which should be an implementation of DefaultContextBase.

For example, you can implement your app like this.

 {
         class MyContext implements DefaultContextBase<Long, Long, Long, Double> {
                 public void Init(IFragment<Long, Long, Long, Double> frag,
                                 DefaultMessageManager messageManager, StdVector<FFIByteString> args) {

                 }

                 public void Output(IFragment<Long, Long, Long, Double> frag) {

                 }
         }
         class MyApp implements DefaultAppBase<Long, Long, Long, Double, MyContext> {
                 public void PEval(IFragment<Long, Long, Long, Double> graph,
                                 DefaultContextBase context, DefaultMessageManager messageManager) {

                 }

                 public void IncEval(IFragment<Long, Long, Long, Double> graph,
                                 DefaultContextBase context, DefaultMessageManager messageManager) {

                 }
         }
 }
 

For more examples, please refer to module com.alibaba.graphscope.grape-demo

Method Summary

Modifier and Type	Method	Description
void	IncEval(IFragment<OID_T,VID_T,VDATA_T,EDATA_T> graph, DefaultContextBase<OID_T,VID_T,VDATA_T,EDATA_T> context, DefaultMessageManager messageManager)	Incremental Evaluation to implement.
void	PEval(IFragment<OID_T,VID_T,VDATA_T,EDATA_T> graph, DefaultContextBase<OID_T,VID_T,VDATA_T,EDATA_T> context, DefaultMessageManager messageManager)	Partial Evaluation to implement.

Method Detail

PEval

void PEval(IFragment<OID_T,VID_T,VDATA_T,EDATA_T> graph,
           DefaultContextBase<OID_T,VID_T,VDATA_T,EDATA_T> context,
           DefaultMessageManager messageManager)

Partial Evaluation to implement.

Parameters:

graph - fragment. The graph fragment providing accesses to graph data.

context - context. User defined context which manages data during the whole computations.

messageManager - The message manger which manages messages between fragments.

See Also:

IFragment, DefaultContextBase, DefaultMessageManager

IncEval

void IncEval(IFragment<OID_T,VID_T,VDATA_T,EDATA_T> graph,
             DefaultContextBase<OID_T,VID_T,VDATA_T,EDATA_T> context,
             DefaultMessageManager messageManager)

Incremental Evaluation to implement.

Parameters:

graph - fragment. The graph fragment providing accesses to graph data.

context - context. User defined context which manages data during the whole computations.

messageManager - The message manger which manages messages between fragments.

See Also:

IFragment, DefaultContextBase, DefaultMessageManager