TAO_Constraint_Interpreter Class Reference

TAO_Constraint_Interpreter will, given a constraint string whose syntax and semantics comply with the trader specification for the constraint language, determine if a CosTrading::Offer meets the constraints. More...

#include <Constraint_Interpreter.h>

Inheritance diagram for TAO_Constraint_Interpreter:

[legend]Collaboration diagram for TAO_Constraint_Interpreter:

[legend]List of all members.

Public Member Functions
	TAO_Constraint_Interpreter (const CosTradingRepos::ServiceTypeRepository::TypeStruct &ts, const char *constraints ACE_ENV_ARG_DECL) throw (CosTrading::IllegalConstraint, CORBA::NO_MEMORY)
	TAO_Constraint_Interpreter (TAO_Constraint_Validator &validator, const char *constraints ACE_ENV_ARG_DECL) throw (CosTrading::IllegalConstraint, CORBA::NO_MEMORY)
	~TAO_Constraint_Interpreter (void)
	Destructor.
CORBA::Boolean	evaluate (CosTrading::Offer *offer)
CORBA::Boolean	evaluate (TAO_Constraint_Evaluator &evaluator)

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Detailed Description

TAO_Constraint_Interpreter will, given a constraint string whose syntax and semantics comply with the trader specification for the constraint language, determine if a CosTrading::Offer meets the constraints.

TAO_Constraint_Interpreter will first build an expression tree representing the constraint expression using Lex and Yacc. Then, using a TAO_Constraint_Validator, it will validate the semantic correctness of the tree. When the evaluate method is invoked with an Offer, the TAO_Constraint_Interpreter will construct an EvaluationVisitor, which will evaluate the tree and decide whether the offer meets the constraints.

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Constructor & Destructor Documentation

TAO_Constraint_Interpreter::TAO_Constraint_Interpreter (  const CosTradingRepos::ServiceTypeRepository::TypeStruct &  ts, const char *constraints  ACE_ENV_ARG_DECL )  throw (CosTrading::IllegalConstraint, CORBA::NO_MEMORY)

TAO_Constraint_Interpreter::TAO_Constraint_Interpreter (  TAO_Constraint_Validator &  validator, const char *constraints  ACE_ENV_ARG_DECL )  throw (CosTrading::IllegalConstraint, CORBA::NO_MEMORY)

This constructor builds an expression tree representing the constraint specified in <constraints>, and throws an Illegal Constraint exception if the constraint given has syntax errors or semantic errors, such as mismatched types.

TAO_Constraint_Interpreter::~TAO_Constraint_Interpreter (  void   )

Destructor.

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Member Function Documentation

CORBA::Boolean TAO_Constraint_Interpreter::evaluate (  TAO_Constraint_Evaluator &  evaluator  )

CORBA::Boolean TAO_Constraint_Interpreter::evaluate (  CosTrading::Offer *  offer  )

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The documentation for this class was generated from the following files:

• Constraint_Interpreter.h
• Constraint_Interpreter.cpp

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