be.SIRAPRISE.typeimplementations

Class ScalarOperatorGenerator

java.lang.Object

be.SIRAPRISE.typeimplementations.ScalarOperatorGenerator

All Implemented Interfaces:

OperatorGenerator

Direct Known Subclasses:

CONTAINSR, CONTAINSRUSING, CONTAINST, CONTAINSTUSING

public abstract class ScalarOperatorGenerator
extends java.lang.Object
implements OperatorGenerator

Author:

Erwin

Constructor Summary

Constructors

Constructor and Description
ScalarOperatorGenerator()

Method Summary

Modifier and Type	Method and Description
java.lang.String	getInvocationName() The default implementation returns the name() in the OperatorGeneratorCharacteristics annotation associated with the operator generator.
java.util.List<OperatorGeneratorArgumentType>	getOperatorGeneratorSignature() Gets the "generator signature" of the operator generator.
abstract OperatorImplementation_V0105	getOperatorImplementationNI(java.util.List<NameIdentifier> argTypeNames) Gets an operator implementation object for the operator with the invocation name that this factory corresponds to, and the given arguments specification

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface be.SIRAPRISE.typeimplementations.OperatorGenerator

getOperatorImplementation

Constructor Detail

ScalarOperatorGenerator

public ScalarOperatorGenerator()

Method Detail

getInvocationName

public java.lang.String getInvocationName()

The default implementation returns the name() in the OperatorGeneratorCharacteristics annotation associated with the operator generator. Absent such an annotation, returns the simple class name.

Specified by:

getInvocationName in interface OperatorGenerator

Returns:

the invocation name of the operator generator

See Also:

OperatorGenerator.getInvocationName()

getOperatorGeneratorSignature

public java.util.List<OperatorGeneratorArgumentType> getOperatorGeneratorSignature()

Description copied from interface: OperatorGenerator

Gets the "generator signature" of the operator generator. Note that this signature is distinct from the signature of the concerned operator. E.g. the UNIONUSING operator has a signature saying it takes TWO arguments (two relations), but the operator generator signature has a signature saying it takes THREE, the third being an argument that is processed only by the generator, and its effects being entirely incorporated into the operator implementation object returned.

Specified by:

getOperatorGeneratorSignature in interface OperatorGenerator

Returns:

the "generator signature" of the operator generator.

getOperatorImplementationNI

public abstract OperatorImplementation_V0105 getOperatorImplementationNI(java.util.List<NameIdentifier> argTypeNames)
                                                                  throws NotFoundException

Gets an operator implementation object for the operator with the invocation name that this factory corresponds to, and the given arguments specification

Parameters:

argTypeNames - The particular signature of a "generic" operator (with the invocation name that this factory corresponds to) for which an implementation object is to be returned

Returns:

an operator implementation object for the operator with the invocation name that this factory corresponds to, and the given arguments specification

Throws:

NotFoundException - If the given signature does not match the characteristics of the generated operator (e.g. only a single argument for an LE operator), or any other condition exists that prevents the operator from being generated (e.g. LE with two arguments indicating an unordered type)