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Diffstat (limited to 'TAO/orbsvcs/orbsvcs/Log/Log_Constraint_Visitors.h')
| -rw-r--r-- | TAO/orbsvcs/orbsvcs/Log/Log_Constraint_Visitors.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/TAO/orbsvcs/orbsvcs/Log/Log_Constraint_Visitors.h b/TAO/orbsvcs/orbsvcs/Log/Log_Constraint_Visitors.h new file mode 100644 index 00000000000..f9067132c3b --- /dev/null +++ b/TAO/orbsvcs/orbsvcs/Log/Log_Constraint_Visitors.h @@ -0,0 +1,130 @@ +// -*- C++ -*- + +//============================================================================= +/** + * @file Log_Constraint_Visitors.h + * + * $Id$ + * + * @author Pradeep Gore <pradeep@cs.wustl.edu> + * @author Jeff Parsons <parsons@cs.wustl.edu> + * @author D A Hanvey <d.hanvey@qub.ac.uk> + */ +//============================================================================= + + +#ifndef TAO_LOG_CONSTRAINT_VISITORS_H +#define TAO_LOG_CONSTRAINT_VISITORS_H + +#include /**/ "ace/pre.h" + +#include "ace/Hash_Map_Manager.h" +#include "ace/Unbounded_Queue.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 "ace/Null_Mutex.h" + +#include "orbsvcs/Log/log_serv_export.h" + +TAO_BEGIN_VERSIONED_NAMESPACE_DECL + +class TAO_ETCL_Constraint; +class TAO_ETCL_Literal_Constraint; +class TAO_Log_Property_Constraint; + +/** + * @class TAO_Log_Constraint_Visitor + * + * @brief "ETCL" Visitor for the Log queries. + */ +class TAO_Log_Serv_Export TAO_Log_Constraint_Visitor : + public TAO_ETCL_Constraint_Visitor +{ +public: + + /// Constructor. + TAO_Log_Constraint_Visitor (const DsLogAdmin::LogRecord &rec); + + /** + * 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. + */ + CORBA::Boolean evaluate_constraint (TAO_ETCL_Constraint *root); + + // = 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: + /// Size of property_lookup_ hash map. + /// TODO: define inline once VC6 support is deprecated. + static const size_t property_lookup_size_; + + typedef ACE_Hash_Map_Manager <ACE_CString, + CORBA::Any, + ACE_Null_Mutex> HASH_MAP; + + typedef HASH_MAP::ENTRY HASH_ENTRY; + + /// Used to lookup property name and values. + HASH_MAP property_lookup_; + + /// The result of a non_boolean operation. + ACE_Unbounded_Queue<TAO_ETCL_Literal_Constraint> queue_; + + /// Holder for a value found in property_lookup_ or for a + /// nested type within that value. + CORBA::Any_var current_member_; +}; + +TAO_END_VERSIONED_NAMESPACE_DECL + +#include /**/ "ace/post.h" +#endif /* TAO_LOG_CONSTRAINT_VISITORS_H */ |