Open DBEntry using AL5 URI with legacy parameters¶

user             = getenv('USER');
db_name          = 'test';
pulse            = '1';
run              = '10';
dd_major_version = '3';
backend          = 'hdf5';
mode             = 43;

%   mode:   Low level IMAS pulse file access mode. Available options:
%
%           - 40: ``OPEN_PULSE`` (default).
%             Opens the access to the data only if the Data Entry exists,
%             returns error otherwise.
%           - 41: ``FORCE_OPEN_PULSE``.
%             Opens access to the data, creates the Data Entry if it does not
%             exist yet.
%           - 42: ``CREATE_PULSE``.
%             Creates a new empty Data Entry (returns error if Data Entry
%             already exists) and opens it at the same time.
%           - 43: ``FORCE_CREATE_PULSE``.
%             Creates an empty Data Entry (overwrites if Data Entry already
%             exists) and opens it at the same time.

uri = strcat('imas:',backend,'?user=',user,';shot=',pulse,';run=',run,';database=',db_name,';version=',dd_major_version);

% Available backends are:
%           - ascii - only for debugging purposes
%           - mdsplus
%           - hdf5
%           - memory - data is lost after entry is closed
%           - uda

ctx = imas_open(uri, mode);

% You can access IDSes in here - take a look at sample code dealing with IDSes for details

imas_close(ctx);