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/* -*- C++ -*- */
// $Id$
// ==========================================================================
//
// = LIBRARY
// orbsvcs
//
// = FILENAME
// Log_Constraint_Visitors.h
//
// = DESCRIPTION
//
//
// = AUTHOR
// Pradeep Gore <pradeep@cs.wustl.edu>
// Jeff Parsons <parsons@cs.wustl.edu>
// D A Hanvey <d.hanvey@qub.ac.uk>
//
// ==========================================================================
#ifndef LOG_CONSTRAINT_VISITORS_H
#define LOG_CONSTRAINT_VISITORS_H
#include "ace/pre.h"
#include "ace/Hash_Map_Manager.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "orbsvcs/ETCL/ETCL_Constraint_Visitor.h"
#include "orbsvcs/DsLogAdminC.h"
#include "log_export.h"
class TAO_ETCL_Constraint;
class TAO_ETCL_Literal_Constraint;
class TAO_Log_Property_Constraint;
class TAO_Log_Export TAO_Log_Constraint_Visitor
: public TAO_ETCL_Constraint_Visitor
{
public:
TAO_Log_Constraint_Visitor (DsLogAdmin::LogRecord &rec);
// Constructor.
CORBA::Boolean evaluate_constraint (TAO_ETCL_Constraint *root);
// Returns 1 if the offer satisfies the constraint
// represented by the the expression tree rooted at <root>, 0 if it
// doesn't. If an error occurs during process, the traversal
// automatically fails.
// The overridden methods.
int visit_literal (TAO_ETCL_Literal_Constraint *);
int visit_identifier (TAO_ETCL_Identifier *);
int visit_union_value (TAO_ETCL_Union_Value *);
int visit_union_pos (TAO_ETCL_Union_Pos *);
int visit_component_pos (TAO_ETCL_Component_Pos *);
int visit_component_assoc (TAO_ETCL_Component_Assoc *);
int visit_component_array (TAO_ETCL_Component_Array *);
int visit_special (TAO_ETCL_Special *);
int visit_component (TAO_ETCL_Component *);
int visit_dot (TAO_ETCL_Dot *);
int visit_eval (TAO_ETCL_Eval *);
int visit_default (TAO_ETCL_Default *);
int visit_exist (TAO_ETCL_Exist *);
int visit_unary_expr (TAO_ETCL_Unary_Expr *);
int visit_binary_expr (TAO_ETCL_Binary_Expr *);
int visit_preference (TAO_ETCL_Preference *);
private:
// Sub-methods for visit_binary_expr().
int visit_or (TAO_ETCL_Binary_Expr *);
int visit_and (TAO_ETCL_Binary_Expr *);
int visit_twiddle (TAO_ETCL_Binary_Expr *);
int visit_in (TAO_ETCL_Binary_Expr *);
int visit_binary_op (TAO_ETCL_Binary_Expr *binary_expr,
int op_type);
// These use dynamic anys look inside the ETCL component.
CORBA::Boolean sequence_does_contain (const CORBA::Any *any,
TAO_ETCL_Literal_Constraint &item);
CORBA::Boolean array_does_contain (const CORBA::Any *any,
TAO_ETCL_Literal_Constraint &item);
CORBA::Boolean struct_does_contain (const CORBA::Any *any,
TAO_ETCL_Literal_Constraint &item);
CORBA::Boolean union_does_contain (const CORBA::Any *any,
TAO_ETCL_Literal_Constraint &item);
CORBA::Boolean any_does_contain (const CORBA::Any *any,
TAO_ETCL_Literal_Constraint &item);
// Utility function to compare a TAO_ETCL_Literal_Constraint type
// and a type code.
CORBA::Boolean simple_type_match (int expr_type,
CORBA::TCKind tc_kind);
private:
ACE_Hash_Map_Manager <ACE_CString,
CORBA::Any*,
TAO_SYNCH_MUTEX>
property_lookup_;
// Used to lookup property name and values.
ACE_Unbounded_Queue <TAO_ETCL_Literal_Constraint> queue_;
// The result of a non_boolean operation.
CORBA::Any_var current_member_;
// Holder for a value found in property_lookup_ or for a
// nested type within that value.
DsLogAdmin::LogRecord &rec_;
// Local LogRecord
};
#include "ace/post.h"
#endif /* LOG_CONSTRAINT_VISITORS_H */
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