net.sf.farrago.fem.fennel
Interface FemWindowStreamDefClass

All Superinterfaces:

RefBaseObject, RefClass, RefFeatured

All Known Implementing Classes:

FemWindowStreamDefClass$Hib

public interface FemWindowStreamDefClass
extends RefClass

WindowStreamDef class proxy interface.

Execution object which calculates expressions over a set of windows. An output record is made up expressions drawn from the input record and the current bucket of each window.

Note that this a window stream has a superset of the functionality of the FemCalcTupleStreamDef execution object.

Note: This type should not be subclassed, implemented or directly instantiated by clients. It is generated from a MOF metamodel and implemented by Enki or MDR.

Method Summary

FemWindowStreamDef	createFemWindowStreamDef() The default factory operation used to create an instance object.
FemWindowStreamDef	createFemWindowStreamDef(String name, FemTupleDescriptor outputDesc, boolean filter, String outputProgram, FemTupleProjection inputOrderKeyList) Creates an instance object having attributes initialized by the passed values.

Methods inherited from interface javax.jmi.reflect.RefClass

refAllOfClass, refAllOfType, refCreateInstance, refCreateStruct, refCreateStruct, refGetEnum, refGetEnum

Methods inherited from interface javax.jmi.reflect.RefFeatured

refGetValue, refGetValue, refInvokeOperation, refInvokeOperation, refSetValue, refSetValue

Methods inherited from interface javax.jmi.reflect.RefBaseObject

equals, hashCode, refImmediatePackage, refMetaObject, refMofId, refOutermostPackage, refVerifyConstraints

Method Detail

createFemWindowStreamDef

FemWindowStreamDef createFemWindowStreamDef()

The default factory operation used to create an instance object.

Returns:

The created instance object.

createFemWindowStreamDef

FemWindowStreamDef createFemWindowStreamDef(String name,
                                            FemTupleDescriptor outputDesc,
                                            boolean filter,
                                            String outputProgram,
                                            FemTupleProjection inputOrderKeyList)

Creates an instance object having attributes initialized by the passed values.

Parameters:

name -

outputDesc -

filter -

If true, the output program sets a status register which determines whether to output the row.

outputProgram -

Calculator program to generate a row of output.

Input fields to the programs are the fields of the input record, followed by the fields of the current bucket of each window.

If 'filter' is true, the program sets a status register which the XO should use to determine whether to output the row.

inputOrderKeyList -

List of columns on which the input stream is sorted.

Returns:

The created instance object.