AQL query for blood pressure from the AQL documentation

Georg Fette georg.fette at uni-wuerzburg.de
Mon Apr 29 17:49:58 EDT 2019


Hello,
I have a problem with the interpretation of an AQL query from the AQL 
documentation. In section 6.3 the path to the value of the systolic 
blood pressure is
/data[at0001]/events[at0006]/data[at0003]/items[at0004]/value/value
The first part until
/data[at0001]/events[at0006]/data[at0003]/items[at0004]/value
denotes a DV_QUANTITY.
Where is the additional field 'value' of the type DV_QUANTITY defined ?
The class itself defines the fields 'magnitude', 'precision', 'units', 
'normal_range' and 'other_reference_ranges'. Its parent class DV_AMOUNT 
defines 'accurany_is_percent' and 'accuracy'. The next parent 
DV_QUANTIFIED defines 'magnitude_status' and again 'accuracy'. The next 
parent DV_ORDERED defines 'normal_status', 'normal_range' and again 
'other_reference_ranges'. The two parents of DV_ORDERED are DATA_VALUE 
and Ordered, both define no fields.
Has this field access to be 'magnitude' instead of 'value' or am I 
missing something ?
Greetings
Georg

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