%GETPROXYIDS Extract the Proxy IDs underlying a cell array of 
% arrow.array.Array or arrow.tabular.RecordBatch instances.

% Licensed to the Apache Software Foundation (ASF) under one or more
% contributor license agreements.  See the NOTICE file distributed with
% this work for additional information regarding copyright ownership.
% The ASF licenses this file to you under the Apache License, Version
% 2.0 (the "License"); you may not use this file except in compliance
% with the License.  You may obtain a copy of the License at
%
%   http://www.apache.org/licenses/LICENSE-2.0
%
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% distributed under the License is distributed on an "AS IS" BASIS,
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
% implied.  See the License for the specific language governing
% permissions and limitations under the License.
function proxyIDs = getProxyIDs(objects)
    proxyIDs = zeros(1, numel(objects), "uint64");

    % Extract the Proxy.ID from each object
    for ii = 1:numel(objects)
        proxyIDs(ii) = objects{ii}.Proxy.ID;
    end
end

