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Dataset throws unguarded error #364

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gkellogg opened this issue Nov 1, 2017 · 0 comments

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gkellogg commented Nov 1, 2017

From ruby-rdf/rdf-do#4, Dataset#count can get a null value in #each_statement, which should provide more meaningful error reporting.

…/vendor/cache/ruby/2.3.0/gems/rdf-2.2.11/lib/rdf/model/dataset.rb:67:in `each_statement': undefined method `each' for nil:NilClass (NoMethodError)
    from …/vendor/cache/ruby/2.3.0/gems/rdf-2.2.11/lib/rdf/mixin/queryable.rb:172:in `first'
    from test-store.rb:24:in `<main>'

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