TAO_Trader_Constraint_Evaluator Class Reference

#include <Trader_Constraint_Visitors.h>

Inheritance diagram for TAO_Trader_Constraint_Evaluator:

[legend]Collaboration diagram for TAO_Trader_Constraint_Evaluator:

[legend]List of all members.

Public Member Functions
	TAO_Trader_Constraint_Evaluator (CosTrading::Offer *offer, CORBA::Boolean supports_dynamic_properties=1)
	Constructor.
virtual int	visit_property (TAO_Property_Constraint *literal)
	Copy the value of the property into the result container.
Private Attributes
TAO_Property_Evaluator	prop_eval_

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Detailed Description

Definition at line 45 of file Trader_Constraint_Visitors.h.

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Constructor & Destructor Documentation

TAO_BEGIN_VERSIONED_NAMESPACE_DECL TAO_Trader_Constraint_Evaluator::TAO_Trader_Constraint_Evaluator	(	CosTrading::Offer *	offer,
		CORBA::Boolean	supports_dynamic_properties = 1
	)

Constructor.

Definition at line 8 of file Trader_Constraint_Visitors.cpp.

References ACE_Hash_Map_Manager_Ex< EXT_ID, INT_ID, HASH_KEY, COMPARE_KEYS, ACE_LOCK >::close(), ACE_Hash_Map_Manager_Ex< EXT_ID, INT_ID, HASH_KEY, COMPARE_KEYS, ACE_LOCK >::open(), CosTrading::Offer::properties, and TAO_Constraint_Evaluator::props_.

  : prop_eval_ (*offer, supports_dp)
{
  this->props_.close ();
  this->props_.open ();
  int length = offer->properties.length ();

  // Create a map of property names to their values.
  for (int i = 0; i < length; i++)
    {
      CORBA::String_var name = (const char*) offer->properties[i].name;
      this->props_.bind (name, i);
    }
}

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Member Function Documentation

int TAO_Trader_Constraint_Evaluator::visit_property

(

TAO_Property_Constraint *

literal

)

[virtual]

Copy the value of the property into the result container.

Reimplemented from TAO_Constraint_Evaluator.

Definition at line 26 of file Trader_Constraint_Visitors.cpp.

References TAO_Property_Constraint::name(), prop_eval_, TAO_Property_Evaluator::property_value(), and TAO_Constraint_Evaluator::queue_.

{
  int return_value = -1, prop_index = 0;
  // Handle case where property is not, in fact, mapped to a value
  CORBA::String_var prop_name ((const char*) literal->name ());

  if (this->props_.find (prop_name, prop_index) == 0)
    {

      CORBA::Any *value = 0;
      // Retrieve the value of the property from the Property_Evaluator
      try
        {
          value = this->prop_eval_.property_value (prop_index);
        }
      catch (const CORBA::Exception&)
        {
          return -1;
        }

      if (value != 0)
        {
          this->queue_.enqueue_head (TAO_Literal_Constraint (value));
          return_value = 0;
        }
    }

  return return_value;
}

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Member Data Documentation

TAO_Property_Evaluator TAO_Trader_Constraint_Evaluator::prop_eval_ [private]

Utility with which to evaluate the properties of an offer, be they dyanmic or static.

Definition at line 57 of file Trader_Constraint_Visitors.h.

Referenced by visit_property().

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

• Trader_Constraint_Visitors.h
• Trader_Constraint_Visitors.cpp

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