/// <summary>
/// Renders the clause in textual representation.
/// </summary>
/// <param name="writer">to output to</param>
public void ToEPL(TextWriter writer)
{
string delimiter;
writer.Write(" match_recognize (");
if (PartitionExpressions.Count > 0)
{
delimiter = "";
writer.Write(" partition by ");
foreach (Expression part in PartitionExpressions)
{
writer.Write(delimiter);
part.ToEPL(writer, ExpressionPrecedenceEnum.MINIMUM);
delimiter = ", ";
}
}
delimiter = "";
writer.Write(" measures ");
foreach (SelectClauseExpression part in Measures)
{
writer.Write(delimiter);
part.ToEPLElement(writer);
delimiter = ", ";
}
if (IsAll)
{
writer.Write(" all matches");
}
if (SkipClause != MatchRecognizeSkipClause.PAST_LAST_ROW)
{
writer.Write(" after match skip " + SkipClause.GetText());
}
writer.Write(" pattern (");
Pattern.WriteEPL(writer);
writer.Write(")");
if ((IntervalClause != null) && (IntervalClause.Expression != null))
{
writer.Write(" interval ");
IntervalClause.Expression.ToEPL(writer, ExpressionPrecedenceEnum.MINIMUM);
if (IntervalClause.IsOrTerminated)
{
writer.Write(" or terminated");
}
}
delimiter = "";
if (!Defines.IsEmpty())
{
writer.Write(" define ");
foreach (MatchRecognizeDefine def in Defines)
{
writer.Write(delimiter);
writer.Write(def.Name);
writer.Write(" as ");
def.Expression.ToEPL(writer, ExpressionPrecedenceEnum.MINIMUM);
delimiter = ", ";
}
}
writer.Write(")");
}