public void TestVariableAnalysis()
{
var patternTests = new[] {
new[] { "A", "[\"A\"]", "[]" },
new[] { "A B", "[\"A\", \"B\"]", "[]" },
new[] { "A B*", "[\"A\"]", "[\"B\"]" },
new[] { "A B B", "[\"A\"]", "[\"B\"]" },
new[] { "A B A", "[\"B\"]", "[\"A\"]" },
new[] { "A B+ C", "[\"A\", \"C\"]", "[\"B\"]" },
new[] { "A B?", "[\"A\", \"B\"]", "[]" },
new[] { "(A B)* C", "[\"C\"]", "[\"A\", \"B\"]" },
new[] { "D (A B)+ (G H)? C", "[\"D\", \"G\", \"H\", \"C\"]", "[\"A\", \"B\"]" },
new[] { "A B | A C", "[\"A\", \"B\", \"C\"]", "[]" },
new[] { "(A B*) | (A+ C)", "[\"C\"]", "[\"B\", \"A\"]" },
new[] { "(A | B) | (C | A)", "[\"A\", \"B\", \"C\"]", "[]" },
};
for (var i = 0; i < patternTests.Length; i++)
{
var pattern = patternTests[i][0];
var expression = "select * from MyEvent#keepall match_recognize (" +
" partition by string measures A.string as a_string pattern ( " +
pattern +
") define A as (A.value = 1) )";
var raw = CompilerHelperSingleEPL.ParseWalk(expression, SupportStatementSpecMapEnv.Make(container));
var parent = raw.MatchRecognizeSpec.Pattern;
var singles = new LinkedHashSet <string>();
var multiples = new LinkedHashSet <string>();
RowRecogHelper.RecursiveInspectVariables(parent, false, singles, multiples);
var outText = "Failed in :" +
pattern +
" result is : single " +
singles.RenderAny() +
" multiple " +
multiples.RenderAny();
Assert.AreEqual(patternTests[i][1], singles.RenderAny(), outText);
Assert.AreEqual(patternTests[i][2], multiples.RenderAny(), outText);
}
}
