private SchemaMapping FillMapping(DataSet dataset, DataTable datatable, string srcTable, DataReaderContainer dataReader, int schemaCount, DataColumn parentChapterColumn, object parentChapterValue)
{
SchemaMapping mapping = null;
if (_hasFillErrorHandler)
{
try {
// only try-catch if a FillErrorEventHandler is registered so that
// in the default case we get the full callstack from users
mapping = FillMappingInternal(dataset, datatable, srcTable, dataReader, schemaCount, parentChapterColumn, parentChapterValue);
}
catch (Exception e) {
//
if (!ADP.IsCatchableExceptionType(e))
{
throw;
}
ADP.TraceExceptionForCapture(e);
OnFillErrorHandler(e, null, null);
}
}
else
{
mapping = FillMappingInternal(dataset, datatable, srcTable, dataReader, schemaCount, parentChapterColumn, parentChapterValue);
}
return(mapping);
}
private int FillLoadDataRow(SchemaMapping mapping)
{
int rowsAddedToDataSet = 0;
DataReaderContainer dataReader = mapping.DataReader;
if (_hasFillErrorHandler)
{
while (dataReader.Read())
{ // read remaining rows of first and subsequent resultsets
try
{
// only try-catch if a FillErrorEventHandler is registered so that
// in the default case we get the full callstack from users
mapping.LoadDataRowWithClear();
rowsAddedToDataSet++;
}
catch (Exception e) when(ADP.IsCatchableExceptionType(e))
{
ADP.TraceExceptionForCapture(e);
OnFillErrorHandler(e, mapping.DataTable, mapping.DataValues);
}
}
}
else
{
while (dataReader.Read())
{
// read remaining rows of first and subsequent resultset
mapping.LoadDataRow();
rowsAddedToDataSet++;
}
}
return(rowsAddedToDataSet);
}
internal int FillFromReader(DataSet dataset, DataTable datatable, string srcTable, DataReaderContainer dataReader, int startRecord, int maxRecords, DataColumn parentChapterColumn, object parentChapterValue)
{
int rowsAddedToDataSet = 0;
int schemaCount = 0;
do
{
AssertReaderHandleFieldCount(dataReader);
if (0 >= dataReader.FieldCount)
{
continue; // loop to next result
}
SchemaMapping mapping = FillMapping(dataset, datatable, srcTable, dataReader, schemaCount, parentChapterColumn, parentChapterValue);
schemaCount++; // don't increment if no SchemaTable ( a non-row returning result )
AssertSchemaMapping(mapping);
if (null == mapping)
{
continue; // loop to next result
}
if (null == mapping.DataValues)
{
continue; // loop to next result
}
if (null == mapping.DataTable)
{
continue; // loop to next result
}
mapping.DataTable.BeginLoadData();
try {
// startRecord and maxRecords only apply to the first resultset
if ((1 == schemaCount) && ((0 < startRecord) || (0 < maxRecords)))
{
rowsAddedToDataSet = FillLoadDataRowChunk(mapping, startRecord, maxRecords);
}
else
{
int count = FillLoadDataRow(mapping);
if (1 == schemaCount) // MDAC 71347
// only return LoadDataRow count for first resultset
// not secondary or chaptered results
{
rowsAddedToDataSet = count;
}
}
}
finally {
mapping.DataTable.EndLoadData();
}
if (null != datatable)
{
break; // do not read remaining results in single DataTable case
}
} while (FillNextResult(dataReader));
return(rowsAddedToDataSet);
}
private int FillLoadDataRow(SchemaMapping mapping)
{
int num = 0;
DataReaderContainer dataReader = mapping.DataReader;
if (!this._hasFillErrorHandler)
{
while (dataReader.Read())
{
mapping.LoadDataRow();
num++;
}
return(num);
}
while (dataReader.Read())
{
try
{
mapping.LoadDataRowWithClear();
num++;
continue;
}
catch (Exception exception)
{
if (!ADP.IsCatchableExceptionType(exception))
{
throw;
}
ADP.TraceExceptionForCapture(exception);
this.OnFillErrorHandler(exception, mapping.DataTable, mapping.DataValues);
continue;
}
}
return(num);
}
private void AssertSchemaMapping(SchemaMapping mapping)
{
#if DEBUG
if (_debugHookNonEmptySelectCommand)
{
Debug.Assert(mapping != null && mapping.DataValues != null && mapping.DataTable != null, "Debug hook specifies that non-empty results are not expected");
}
#endif
}
internal object FillSchemaFromReader(DataSet dataset, DataTable datatable, SchemaType schemaType, string srcTable, IDataReader dataReader)
{
DataTable[] dataTables = null;
int schemaCount = 0;
do
{
DataReaderContainer readerHandler = DataReaderContainer.Create(dataReader, ReturnProviderSpecificTypes);
AssertReaderHandleFieldCount(readerHandler);
if (0 >= readerHandler.FieldCount)
{
continue;
}
string tmp = null;
if (null != dataset)
{
tmp = DataAdapter.GetSourceTableName(srcTable, schemaCount);
schemaCount++; // don't increment if no SchemaTable ( a non-row returning result )
}
SchemaMapping mapping = new SchemaMapping(this, dataset, datatable, readerHandler, true, schemaType, tmp, false, null, null);
if (null != datatable)
{
// do not read remaining results in single DataTable case
return(mapping.DataTable);
}
else if (null != mapping.DataTable)
{
if (null == dataTables)
{
dataTables = new DataTable[1] {
mapping.DataTable
};
}
else
{
dataTables = DataAdapter.AddDataTableToArray(dataTables, mapping.DataTable);
}
}
} while (dataReader.NextResult()); // FillSchema does not capture errors for FillError event
object value = dataTables;
if ((null == value) && (null == datatable))
{
value = Array.Empty <DataTable>();
}
return(value); // null if datatable had no results
}
private int FillLoadDataRowChunk(SchemaMapping mapping, int startRecord, int maxRecords)
{
DataReaderContainer dataReader = mapping.DataReader;
while (0 < startRecord)
{
if (!dataReader.Read())
{
// there are no more rows on first resultset
return(0);
}
--startRecord;
}
int rowsAddedToDataSet = 0;
if (0 < maxRecords)
{
while ((rowsAddedToDataSet < maxRecords) && dataReader.Read())
{
if (_hasFillErrorHandler)
{
try {
mapping.LoadDataRowWithClear();
rowsAddedToDataSet++;
}
catch (Exception e) {
//
if (!ADP.IsCatchableExceptionType(e))
{
throw;
}
ADP.TraceExceptionForCapture(e);
OnFillErrorHandler(e, mapping.DataTable, mapping.DataValues);
}
}
else
{
mapping.LoadDataRow();
rowsAddedToDataSet++;
}
}
// skip remaining rows of the first resultset
}
else
{
rowsAddedToDataSet = FillLoadDataRow(mapping);
}
return(rowsAddedToDataSet);
}
private int FillLoadDataRowChunk(SchemaMapping mapping, int startRecord, int maxRecords)
{
DataReaderContainer dataReader = mapping.DataReader;
while (0 < startRecord)
{
if (!dataReader.Read())
{
return(0);
}
startRecord--;
}
int num = 0;
if (0 >= maxRecords)
{
return(this.FillLoadDataRow(mapping));
}
while ((num < maxRecords) && dataReader.Read())
{
if (this._hasFillErrorHandler)
{
try
{
mapping.LoadDataRowWithClear();
num++;
}
catch (Exception exception)
{
if (!ADP.IsCatchableExceptionType(exception))
{
throw;
}
ADP.TraceExceptionForCapture(exception);
this.OnFillErrorHandler(exception, mapping.DataTable, mapping.DataValues);
}
}
else
{
mapping.LoadDataRow();
num++;
}
}
return(num);
}
internal object FillSchemaFromReader(DataSet dataset, DataTable datatable, SchemaType schemaType, string srcTable, IDataReader dataReader)
{
DataTable[] tables = null;
int index = 0;
do
{
DataReaderContainer container = DataReaderContainer.Create(dataReader, this.ReturnProviderSpecificTypes);
if (0 < container.FieldCount)
{
string sourceTableName = null;
if (dataset != null)
{
sourceTableName = GetSourceTableName(srcTable, index);
index++;
}
SchemaMapping mapping = new SchemaMapping(this, dataset, datatable, container, true, schemaType, sourceTableName, false, null, null);
if (datatable != null)
{
return(mapping.DataTable);
}
if (mapping.DataTable != null)
{
if (tables == null)
{
tables = new DataTable[] { mapping.DataTable };
}
else
{
tables = AddDataTableToArray(tables, mapping.DataTable);
}
}
}
}while (dataReader.NextResult());
object obj2 = tables;
if ((obj2 == null) && (datatable == null))
{
obj2 = new DataTable[0];
}
return(obj2);
}
internal int FillFromReader(DataSet dataset, DataTable datatable, string srcTable, DataReaderContainer dataReader, int startRecord, int maxRecords, DataColumn parentChapterColumn, object parentChapterValue)
{
int num2 = 0;
int schemaCount = 0;
do
{
if (0 < dataReader.FieldCount)
{
SchemaMapping mapping = this.FillMapping(dataset, datatable, srcTable, dataReader, schemaCount, parentChapterColumn, parentChapterValue);
schemaCount++;
if (((mapping != null) && (mapping.DataValues != null)) && (mapping.DataTable != null))
{
mapping.DataTable.BeginLoadData();
try
{
if ((1 == schemaCount) && ((0 < startRecord) || (0 < maxRecords)))
{
num2 = this.FillLoadDataRowChunk(mapping, startRecord, maxRecords);
}
else
{
int num3 = this.FillLoadDataRow(mapping);
if (1 == schemaCount)
{
num2 = num3;
}
}
}
finally
{
mapping.DataTable.EndLoadData();
}
if (datatable != null)
{
return(num2);
}
}
}
}while (this.FillNextResult(dataReader));
return(num2);
}
private SchemaMapping FillMapping(DataSet dataset, DataTable datatable, string srcTable, DataReaderContainer dataReader, int schemaCount, DataColumn parentChapterColumn, object parentChapterValue)
{
SchemaMapping mapping = null;
if (this._hasFillErrorHandler)
{
try
{
mapping = this.FillMappingInternal(dataset, datatable, srcTable, dataReader, schemaCount, parentChapterColumn, parentChapterValue);
}
catch (Exception exception)
{
if (!ADP.IsCatchableExceptionType(exception))
{
throw;
}
ADP.TraceExceptionForCapture(exception);
this.OnFillErrorHandler(exception, null, null);
}
return(mapping);
}
return(this.FillMappingInternal(dataset, datatable, srcTable, dataReader, schemaCount, parentChapterColumn, parentChapterValue));
}
