public void TestDisplayAST()
{
String expression = "A -> [10] B until C -> D";
Log.Debug(".testDisplayAST parsing: " + expression);
Pair <ITree, CommonTokenStream> ast = Parse(expression);
SupportParserHelper.DisplayAST(ast.First);
}
private void AssertIsValid(string text)
{
Log.Debug(".assertIsValid Trying text=" + text);
Pair<ITree, CommonTokenStream> ast = Parse(text);
Log.Debug(".assertIsValid success, tree walking...");
SupportParserHelper.DisplayAST(ast.First);
Log.Debug(".assertIsValid done");
}
private void AssertEquivalent(String expressionOne, String expressionTwo)
{
EPLTreeWalkerListener l1 = SupportParserHelper.ParseAndWalkPattern(expressionOne);
EPLTreeWalkerListener l2 = SupportParserHelper.ParseAndWalkPattern(expressionTwo);
String t1 = toPatternText(l1);
String t2 = toPatternText(l2);
Assert.AreEqual(t1, t2);
}
public void TestParserNodeGeneration()
{
String expression = "a(m=1) -> not b() or every c() and d() where a:b (5) and timer:interval(10)";
Log.Debug(".testParserNodeGeneration parsing: " + expression);
Pair <ITree, CommonTokenStream> parsed = Parse(expression);
ITree ast = parsed.First;
SupportParserHelper.DisplayAST(ast);
}
public void TestGetPropertyNameEscaped()
{
String PROPERTY = "a\\.b\\.c";
Pair <ITree, CommonTokenStream> parsed = SupportParserHelper.ParseEventProperty(PROPERTY);
ITree propertyNameExprNode = parsed.First.GetChild(0);
ASTUtil.DumpAST(propertyNameExprNode);
String propertyName = ((IRuleNode)propertyNameExprNode).GetText();
Assert.AreEqual(PROPERTY, propertyName);
}
public void TestDisplayAST()
{
string expression = "select * from A where exp > ANY (select a from B)";
Log.Debug(".testDisplayAST parsing: " + expression);
Pair<ITree, CommonTokenStream> ast = Parse(expression);
SupportParserHelper.DisplayAST(ast.First);
Log.Debug(".testDisplayAST walking...");
EPLTreeWalkerListener listener = SupportEPLTreeWalkerFactory.MakeWalker(ast.Second);
var walker = new ParseTreeWalker(); // create standard walker
walker.Walk(listener, (IParseTree) ast.First); // initiate walk of tree with listener
}
public void TestVisibilityAnalysis()
{
var patternTests = new String[][]
{
new [] { "A", "[]" },
new [] { "A B", "[B=[A]]" },
new [] { "A B*", "[B=[A]]" },
new [] { "A B B", "[B=[A]]" },
new [] { "A B A", "[A=[B], B=[A]]" },
new [] { "A B+ C", "[B=[A], C=[A, B]]" },
new [] { "(A B)+ C", "[B=[A], C=[A, B]]" },
new [] { "D (A B)+ (G H)? C", "[A=[D], B=[A, D], C=[A, B, D, G, H], G=[A, B, D], H=[A, B, D, G]]" },
new [] { "A B | A C", "[B=[A], C=[A]]" },
new [] { "(A B*) | (A+ C)", "[B=[A], C=[A]]" },
new [] { "A (B | C) D", "[B=[A], C=[A], D=[A, B, C]]" },
new [] { "(((A))) (((B))) (( C | (D E)))", "[B=[A], C=[A, B], D=[A, B], E=[A, B, D]]" },
new [] { "(A | B) C", "[C=[A, B]]" },
new [] { "(A | B) (C | A)", "[A=[B], C=[A, B]]" },
};
for (int i = 0; i < patternTests.Length; i++)
{
String pattern = patternTests[i][0];
String expected = patternTests[i][1];
String expression = "select * from MyEvent.win:keepall() match_recognize (" +
" partition by string measures A.string as a_string pattern ( " + pattern + ") define A as (A.value = 1) )";
EPLTreeWalkerListener walker = SupportParserHelper.ParseAndWalkEPL(expression);
StatementSpecRaw raw = walker.GetStatementSpec();
RowRegexExprNode parent = raw.MatchRecognizeSpec.Pattern;
IDictionary <String, ISet <String> > visibility = EventRowRegexHelper.DetermineVisibility(parent);
// sort, for comparing
var visibilitySorted = new LinkedHashMap <String, IList <String> >();
var tagsSorted = new List <String>(visibility.Keys);
tagsSorted.Sort();
foreach (string tag in tagsSorted)
{
var sorted = new List <String>(visibility.Get(tag));
sorted.Sort();
visibilitySorted.Put(tag, sorted);
}
Assert.AreEqual(expected, visibilitySorted.Render(), "Failed in :" + pattern);
}
}
public void TestGetPropertyName()
{
String PROPERTY = "a('aa').b[1].c";
// Should parse and result in the exact same property name
Pair <ITree, CommonTokenStream> parsed = SupportParserHelper.ParseEventProperty(PROPERTY);
ITree propertyNameExprNode = parsed.First.GetChild(0);
ASTUtil.DumpAST(propertyNameExprNode);
String propertyName = ((IRuleNode)propertyNameExprNode).GetText();
Assert.AreEqual(PROPERTY, propertyName);
// Try AST with tokens separated, same property name
parsed = SupportParserHelper.ParseEventProperty("a( 'aa' ). b [ 1 ] . c");
propertyNameExprNode = parsed.First.GetChild(0);
propertyName = ((IRuleNode)propertyNameExprNode).GetText();
Assert.AreEqual(PROPERTY, propertyName);
}
public void TestVariableAnalysis()
{
var patternTests = new String[][] {
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 (int i = 0; i < patternTests.Length; i++)
{
String pattern = patternTests[i][0];
String expression = "select * from MyEvent.win:keepall() match_recognize (" +
" partition by TheString measures A.TheString as a_string pattern ( " + pattern + ") define A as (A.value = 1) )";
EPLTreeWalkerListener walker = SupportParserHelper.ParseAndWalkEPL(expression);
StatementSpecRaw raw = walker.GetStatementSpec();
RowRegexExprNode parent = raw.MatchRecognizeSpec.Pattern;
var singles = new FIFOHashSet <String>();
var multiples = new FIFOHashSet <String>();
EventRowRegexHelper.RecursiveInspectVariables(parent, false, singles, multiples);
String @out = "Failed in :" + pattern +
" result is : single " + singles.Render() +
" multiple " + multiples.Render();
Assert.AreEqual(patternTests[i][1], singles.Render(), @out);
Assert.AreEqual(patternTests[i][2], multiples.Render(), @out);
}
}
private Pair <ITree, CommonTokenStream> ParseJson(String expression)
{
return(SupportParserHelper.ParseJson(expression));
}
private static FilterStreamSpecRaw MakeSpec(String expression)
{
EPLTreeWalkerListener walker = SupportParserHelper.ParseAndWalkEPL(expression);
return((FilterStreamSpecRaw)walker.GetStatementSpec().StreamSpecs[0]);
}
private static Pair <ITree, CommonTokenStream> Parse(String expression)
{
return(SupportParserHelper.ParseEPL(expression));
}
private Pair<ITree, CommonTokenStream> Parse(string expression)
{
return SupportParserHelper.ParseEPL(expression);
}