public static CodeExpression BuildFromCheckConstraintDefinition(string schemaName, DataTable table, string check_name, string check_definition, out bool hasError, out string errorText)
{
string select_statement = "SELECT colx = IIF((" + check_definition + "), 1, 0) FROM " + schemaName + ".[" + table.TableName + "] WHERE " + check_definition;
TSqlFragment sqlF = ScriptDomFacade.Parse(select_statement);
IIFVisitor iif_visitor = new IIFVisitor();
sqlF.Accept(iif_visitor);
if (iif_visitor.result == null)
{
throw new NotSupportedException("Expression 'IIF' could not be found:" + sqlF.AsText());
}
BooleanExpression iif_predicate = iif_visitor.result.Predicate;
//if (iif_visitor != null)
//{
// //return null; // comment out if it needed
//}
//Console.WriteLine("");
//Console.WriteLine("==== " + check_name + " ============");
//Console.WriteLine(ScriptDomFacade.GenerateScript(iif_predicate));
//Console.WriteLine("-------------------------------------------");
//Console.WriteLine("");
var databaseMetadata = new DatabaseMetadataOnTable(table);
hasError = false;
errorText = null;
return(BooleanExpressionGeneratorVisitor.TryBuildFromFragment(databaseMetadata, iif_predicate, ref hasError, ref errorText));
}
public static void LoadViewOutputColumns(ISchemaMetadataProvider schemaMetadata, string ddl, Action <OutputColumnDescriptor> collector)
{
TSqlFragment sqlF = ScriptDomFacade.Parse(ddl);
//CreateViewStatement stmt_CreateView = (CreateViewStatement)((TSqlScript)sqlF).Batches[0].Statements[0];
SelectStatement stmt_sel = (SelectStatement)((TSqlScript)sqlF).Batches[0].Statements[0];
BatchOutputColumnTypeResolver batchResolver = new BatchOutputColumnTypeResolver(schemaMetadata, stmt_sel, new BatchWithoutParameters());
StatementOutputColumnTypeResolverV2 resolver = new StatementOutputColumnTypeResolverV2(batchResolver, stmt_sel);
QuerySpecification first = TopQuerySpecification(stmt_sel.QueryExpression);
foreach (SelectElement se in first.SelectElements)
{
if (se is SelectScalarExpression scalarExpr)
{
OutputColumnDescriptor col = resolver.ResolveSelectScalarExpression(scalarExpr);
collector(col);
}
else
{
throw new NotImplementedException(se.WhatIsThis());
}
}
}
public static ProcedureMetadata ParseProcedureBody(string procedure_schema, string procedure_name, string procedure_body, Dictionary <string, ProcedureCodeParameter> procedureParameters)
{
string fullName = "[" + procedure_schema + "].[" + procedure_name + "]";
TSqlFragment sqlF = ScriptDomFacade.Parse(procedure_body);
return(new ProcedureMetadata(fullName, procedure_name, sqlF, procedureParameters));
}
public static void LoadFunctionOutputColumns(ISchemaMetadataProvider schemaMetadata, IBatchParameterMetadata parameterMetadata, string functionBodyScript, Action <OutputColumnDescriptor> collector)
{
functionBodyScript = RemoveTrailingBlockComment(functionBodyScript);
if (functionBodyScript.Trim()[0] == '(')
{
int idx = functionBodyScript.IndexOf('(');
int lastix = functionBodyScript.LastIndexOf(')');
functionBodyScript = functionBodyScript.Substring(idx + 1, lastix - idx - 2);
functionBodyScript = functionBodyScript.Trim();
}
TSqlFragment sqlF = ScriptDomFacade.Parse(functionBodyScript);
SelectStatement stmt_sel = (SelectStatement)((TSqlScript)sqlF).Batches[0].Statements[0];
BatchOutputColumnTypeResolver batchResolver = new BatchOutputColumnTypeResolver(schemaMetadata, sqlF, parameterMetadata);
StatementOutputColumnTypeResolverV2 resolver = new StatementOutputColumnTypeResolverV2(batchResolver, stmt_sel);
QuerySpecification first = TopQuerySpecification(stmt_sel.QueryExpression);
foreach (SelectElement se in first.SelectElements)
{
if (se is SelectScalarExpression scalarExpr)
{
OutputColumnDescriptor col = resolver.ResolveSelectScalarExpression(scalarExpr);
collector(col);
}
else
{
throw new NotImplementedException(se.WhatIsThis());
}
}
}