internal IColumnSourceMetadata TryGetTableVariable(string variableName)
{
if (cache_table_variables.TryGetValue(variableName, out TableVariableMetadata source_metadata))
{
return(source_metadata);
}
TableVariableDeclarionVisitor vstor = new TableVariableDeclarionVisitor(variableName);
BodyFragment.Accept(vstor);
if (vstor.variableDefinition != null)
{
source_metadata = new TableVariableMetadata(vstor.variableDefinition);
cache_table_variables.Add(variableName, source_metadata);
return(source_metadata);
}
if (vstor.VariableDataType != null)
{
IColumnSourceMetadata udt_metadata = SchemaMetadata.TryGetUserDefinedTableTypeMetadata(vstor.VariableDataType.Name.SchemaIdentifier.Dequote(), vstor.VariableDataType.Name.BaseIdentifier.Dequote());
return(udt_metadata);
}
var prm = parameters.TryGetParameterType(vstor.VariableName);
if (prm != null && prm.IsUserDefinedTableType)
{
IColumnSourceMetadata udt = SchemaMetadata.TryGetUserDefinedTableTypeMetadata(prm.UserDefinedTableTypeSchema, prm.UserDefinedTableTypeName);
if (udt != null)
{
return(udt);
}
}
//BodyFragment.Accept(new DumpFragmentVisitor(true));
throw new NotImplementedException(variableName);
}
internal override bool TryResolveSourceColumnType(BatchOutputColumnTypeResolver batchResolver, string sourceColumnName, out SourceColumnType columnDbType)
{
if (string.IsNullOrEmpty(sourceColumnName))
{
throw new ArgumentNullException(nameof(sourceColumnName));
}
if (resolved_table == null)
{
resolved_table = batchResolver.SchemaMetadata.TryGetColumnSourceMetadata(SchemaName, TableName);
if (resolved_table == null)
{
// table not exists???
throw new NotImplementedException(Key + "." + sourceColumnName);
}
}
ColumnTypeMetadata sourceColumnType = resolved_table.TryGetColumnTypeByName(sourceColumnName);
if (sourceColumnType != null)
{
columnDbType = new SourceColumnType(this, sourceColumnName, sourceColumnType.ColumnDbType, sourceColumnType.AllowNull);
return(true);
}
else
{
//throw new NotImplementedException(Key + "." + sourceColumnName + " Table: [" + SchemaName + "].[" + TableName + "]");
columnDbType = null;// DbType.Object; // column 'personid' without alias => source traversion
return(false);
}
}
//private QueryColumnBase override_TryResolveSelectedColumn(BatchOutputColumnTypeResolver batchResolver, string outputColumnName, string sourceColumnName)
//{
// if (resolved_source_metadata == null)
// {
// resolved_source_metadata = batchResolver.TryGetTableVariable(VarTableRef.Variable.Name);
// if (resolved_source_metadata == null)
// {
// throw new NotImplementedException(VarTableRef.WhatIsThis());
// }
// }
// return base.AddResolveOutputdColumn(new QueryColumnE(this, outputColumnName, sourceColumnName, columnDbType.Value));
//}
internal override bool TryResolveSourceColumnType(BatchOutputColumnTypeResolver batchResolver, string sourceColumnName, out SourceColumnType columnType)
{
if (resolved_source_metadata == null)
{
resolved_source_metadata = batchResolver.TryGetTableVariable(VarTableRef.Variable.Name);
if (resolved_source_metadata == null)
{
throw new NotImplementedException(VarTableRef.WhatIsThis());
}
}
ColumnTypeMetadata columnDbType = resolved_source_metadata.TryGetColumnTypeByName(sourceColumnName);
if (columnDbType != null)
{
columnType = new SourceColumnType(this, sourceColumnName, columnDbType.ColumnDbType, columnDbType.AllowNull);
return(true);
}
columnType = null;// DbType.Object;
return(false);
}
//internal QueryColumnBase override_TryResolveSelectedColumn(BatchOutputColumnTypeResolver batchResolver, string outputColumnName, string sourceColumnName)
//{
// if (resolved_source_metadata == null)
// {
// resolved_source_metadata = batchResolver.SchemaMetadata.TryGetFunctionTableMetadata(SchemaName, FunctionName);
// if (resolved_source_metadata == null)
// {
// throw new NotImplementedException(SchemaName + "." + FunctionName + " => " + outputColumnName);
// }
// }
// DbType? columnDbType = resolved_source_metadata.TryGetColumnTypeByName(sourceColumnName);
// if (columnDbType == null)
// {
// return null;
// }
// string outputColumnNameSafe = outputColumnName ?? sourceColumnName;
// return base.AddResolveOutputdColumn(new QueryColumnE(this, outputColumnNameSafe, sourceColumnName, columnDbType.Value));
//}
internal override bool TryResolveSourceColumnType(BatchOutputColumnTypeResolver batchResolver, string sourceColumnName, out SourceColumnType columnType)
{
if (resolved_source_metadata == null)
{
resolved_source_metadata = batchResolver.SchemaMetadata.TryGetFunctionTableMetadata(SchemaName, FunctionName);
if (resolved_source_metadata == null)
{
throw new NotImplementedException(SchemaName + "." + FunctionName + " : " + sourceColumnName);
}
}
ColumnTypeMetadata columnDbType = resolved_source_metadata.TryGetColumnTypeByName(sourceColumnName);
if (columnDbType != null)
{
columnType = new SourceColumnType(this, sourceColumnName, columnDbType.ColumnDbType, columnDbType.AllowNull);
return(true);
}
columnType = null; // DbType.Object;
return(false);
}
