SCHEMA PWB_schema;

(* Defined Data Types *)
TYPE board_side = ENUMERATION OF ( top , bottom );
END_TYPE;


(* Entity Definitions *)

ENTITY physical_entity
  ABSTRACT SUPERTYPE OF ( ONEOF( physical_object , physical_feature )  );
	description : STRING;
	total_length : positive_length_measure;
	total_width : positive_length_measure;
	total_diagonal : positive_length_measure;
	total_height : positive_length_measure;
	total_thickness : positive_length_measure;
	photos : image;
	primary_structural_material : solid_material;	
	analysis_problems : LIST[0:?] OF analysis_problem;

(* NOTE: Some of the subtypes of physical_entity will have a list of
   supported analysis models. This list must be consistent with the
   analysis models defined for each physical_entity in the 
   analysis_models_schema. For now, we are implementing this as
   a comment in the definition of the subtype *)

END_ENTITY;


ENTITY physical_object
  ABSTRACT SUPERTYPE OF( part  )
  SUBTYPE OF ( physical_entity );
END_ENTITY;


ENTITY physical_feature
  ABSTRACT SUPERTYPE OF( ONEOF( pwb_feature , component_occurrence ) )
  SUBTYPE OF ( physical_entity );
	(* All the subtypes of physical_feature must have an
           attribute that links them to a subtype of physical_entity.
           For instance, pwb_feature should have an attribute called
           "associated_pwb" of type "pwb", which is a physical_entity *)
END_ENTITY;


ENTITY pwb_feature
  SUPERTYPE OF ( ONEOF( pwb_passage , pwb_layer ) )
  SUBTYPE OF ( physical_feature );
	associated_pwb : pwb;  
END_ENTITY; 


ENTITY part
  ABSTRACT SUPERTYPE OF( ONEOF ( unimaterial_part , multimaterial_part , assembly ) )
  SUBTYPE OF ( physical_object );
	part_number : id;
	cost : money;
END_ENTITY;


ENTITY unimaterial_part
  SUBTYPE OF ( part );
END_ENTITY;


ENTITY multimaterial_part
  ABSTRACT SUPERTYPE OF( ONEOF ( electrical_component , pwb ) )
  SUBTYPE OF ( part );
END_ENTITY;


ENTITY pwb
  SUBTYPE OF( multimaterial_part );
	layers : LIST [1:?] OF pwb_layer;
	specific_coefficient_of_thermal_bending : REAL;
	core_material : solid_material;
	core_thickness : positive_length_measure;
	multi_stratum_features : SET [1:?] OF pwb_passage;
  (* SUPPORTED_ANALYSIS_MODELS : pwb_thermal_bending_model 
                                 pwb_plane_strain_warpage_model *)
END_ENTITY;


ENTITY pwb_passage
  ABSTRACT SUPERTYPE OF ( plated_through_passage )
  SUBTYPE OF( pwb_feature );
	passage_location : location;
	from_layer : pwb_layer;
	to_layer : pwb_layer;
	hole_diameter : positive_length_measure;
	hole_height : positive_length_measure;
	aspect_ratio : positive_real;
  WHERE
	wr1 : hole_height = SELF\pwb_feature.associated_object.total_thickness;
	wr2 : aspect_ratio = hole_height/hole_diameter;
END_ENTITY;


ENTITY plated_through_passage
  ABSTRACT SUPERTYPE OF( ONEOF ( plated_through_hole , pwb_via ) )
  SUBTYPE OF( pwb_passage );
	land_radius : positive_length_measure;
	plating_material : solid_material;		
	plating_thickness : positive_length_measure;	
	land_thickness : positive_length_measure;
	outer_corner_radius : positive_length_measure;
	inner_corner_radius : positive_length_measure;
  WHERE
	wr1 : hole_height = SELF\pwb_passage.associated_object.total_thickness;
  (* SUUPORTED ANALYSIS MODELS : plated_through_passage_deformation_model *)

END_ENTITY;


ENTITY plated_through_hole
  SUBTYPE OF( plated_through_passage );
  (* SUPPORTED_ANALYSIS_MODELS : plated_through_hole_axisymmetric_model *)
END_ENTITY;


ENTITY pwb_via
  SUBTYPE OF( plated_through_passage );
END_ENTITY;


ENTITY pwb_layer
  SUBTYPE OF( pwb_feature );
	name : STRING;
	thickness : positive_length_measure;
	material : solid_material;
END_ENTITY;


END_SCHEMA (*PWB *);


(* ********************************************************
Version : 960705
	author: A. Scholand	(gt0540b@prism.gatech.edu)
	guidelines: v0.1
	changes: updated to guidelines

Version : 1.0
Developed by: Diego R. Tamburini (gt1423b@cad.gatech.edu)
              Russell S. Peak (peak@cad.gatech.edu)
              
              Engineering Information Systems Laboratory
              Georgia Institute of Technology
              Atlanta, GA

Date: June 3, 1996
********************************************************* *)