Teamcenter ITK API :BOM Creation with variant condition

Understnading the BOM creation APIs

 //Create BOM


//Creates a new BOMView
PS_create_bom_view( NULLTAG, "", "", parent_item,&bv );
ifail = AOM_save( bv );
ifail = AOM_save( parent_item );
ifail = AOM_unlock( parent_item );


//Creates an initial working revision of a BOMView, with no occurrences.
ifail = PS_create_bvr( bv, "", "", false, parent_rev,&(parent->bvr) );
ifail = AOM_save( parent->bvr );
ifail = AOM_save( parent_rev );
ifail = AOM_unlock( parent_rev );


//Creates a number of occurrences linking the specified parent BOMView Revision and the child Item
ifail = PS_create_occurrences( parent->bvr, item, NULLTAG,line->no_of_occs, &occs );

//Sets the quantity attribute of an occurrence. A negative quantity means "quantity undefined."
ifail = PS_set_occurrence_qty( parent->bvr, occs[i], qty );

//Sets the sequence number of an occurrence.
PS_set_seq_no( parent->bvr, occs[i],line->seq_no );

ifail = PS_set_occurrence_name( parent->bvr, occs[i],line->occ_name );

//Adds the specified Item or Item Revision as a substitute child for the specified occurrence
ifail = PS_add_substitute( parent->bvr, occs[i],item, NULLTAG );

//We have done creating BOM //But may required to add variant condition on occurrence

//First Create option to define/add variant condition on occurrence 

//Creates a new classic (legacy) option
BOM_new_option( rev,line->options.ids[opt],"",BOM_option_mode_enum,&option,&option_rev,&ve,&veb)
AOM_save(ve)

//Add values to created option
BOM_add_option_rev_value( option_rev,line->options.ids[opt],&thrown_away_index );
if (ITK_ok != AOM_save(option_rev)|| ITK_ok != AOM_save(option)
 || ITK_ok != POM_save_required( rev, &save_required )
 || ( save_required && ( ITK_ok != AOM_save(rev) ) ) )

//Adding variant condition on occurrence

//Creates a new empty clause list. This is used to create a new variant condition
BOM_variant_new_clause_list( window, &clause_list )

 

//Appends a new clause onto the end of a clause list.
//How this clause is related to its predecessor.
//Must be either BOM_variant_operator_and or BOM_variant_operator_or.
BOM_variant_clause_append ( clause_list,BOM_variant_operator_and,option,
( ( option_eq_s[0] == '=' )? BOM_variant_operator_is_equal: BOM_variant_operator_not_equal ),
option_val_s )

// Create a condition from the clause_list expression
if (ITK_ok != BOM_variant_join_clause_list ( clause_list, &cond_ve )//Creates a new condition Variant Expression from the clause list
|| ITK_ok != BOM_variant_expr_load_if ( cond_ve, &loadif_ve )// Creates a "load if" type Variant Expression which can be attached to a BOM Line (or Occurrence) to control variant configuration of an assembly.
|| ITK_ok != BOM_new_variant_e_block ( &veb )//Returns a newly-created variant expression block
|| ITK_ok != BOM_set_variant_e_block ( veb, 1, &loadif_ve )//Overwrites a variant expression block with new data.
|| ITK_ok != PS_set_variant_data( parent->bvr, occs[i], veb )//Sets the variant condition for the occurrence to the specified variant expression block
|| ITK_ok != AOM_save ( loadif_ve )
|| ITK_ok != AOM_save ( veb )
)

//Deletes a clause list.
ifail = BOM_variant_delete_clause_list ( clause_list );

// Get the occurrences from BOM

//This function will return the tags of all bom views related to the Item.
ITEM_list_bom_views( parent_item, &bv_count, &bvs);

//This function will return the tags of all BOMView revisions for the Item Revision
ITEM_rev_list_bom_view_revs( parent_rev, &bvr_count, &bvrs);

//Lists all of the occurrences of the specified BOMViewRevision.
ifail = PS_list_occurrences_of_bvr( parent->bvr,&n_occs, &occs );

//Deletes the occurrence from its parent BOMView Revision.
ifail = PS_delete_occurrence( parent->bvr, occs[i] );

ifail = AOM_save( parent->bvr );
ifail = AOM_unlock( parent -> bvr );