private void WriteToServer(Feeder feeder)
{
if (this.tableName.Length == 0)
{
throw new ArgumentException("The name of the destination table hasn't been specified", "DestinationTableName");
}
StringBuilder builder = new StringBuilder();
builder.Append("INSERT INTO `");
builder.Append(this.tableName.Replace("`", "``"));
builder.Append("` ");
if (mappings.Count == 0)
{
// the target table has the same number and names of the columns as in the specified input rows
builder.Append("VALUES (");
for (int i = 0; i < feeder.FieldCount; i++)
{
if (i != 0)
{
builder.Append(", ");
}
builder.Append("?");
}
builder.Append(")");
}
else
{
DataRowCollection targetColumns = null;
builder.Append(" (");
for (int i = 0; i < mappings.Count; i++)
{
NuoDbBulkLoaderColumnMapping mapping = mappings[i];
if (i != 0)
{
builder.Append(", ");
}
builder.Append("`");
if (mapping.DestinationColumn == null)
{
// we are requested to map to a target column that is identified with its ordinal number, so
// fetch the schema of the target table to find out what is its name
if (targetColumns == null)
{
// split the destination table into its different parts
string[] parts = this.tableName.Split(new char[] { '.' });
DataTable targetSchema = this.connection.GetSchema("Columns", new string[] { null, // catalog
parts.Length == 2 ? parts[0] : null, // schema
parts.Length == 2 ? parts[1] : parts[0] // table
});
targetColumns = targetSchema.Rows;
}
if (mapping.DestinationOrdinal < 0 || mapping.DestinationOrdinal > targetColumns.Count)
{
throw new IndexOutOfRangeException(String.Format("The specified ordinal of the target column ({0}) is outside the range of the column count ({1}) of table {2}",
new object[] { mapping.DestinationOrdinal, targetColumns.Count, this.tableName }));
}
string columnName = (string)(targetColumns[mapping.DestinationOrdinal]["COLUMN_NAME"]);
builder.Append(columnName.Replace("`", "``"));
}
else
{
builder.Append(mapping.DestinationColumn.Replace("`", "``"));
}
builder.Append("`");
}
builder.Append(") VALUES (");
for (int i = 0; i < mappings.Count; i++)
{
if (i != 0)
{
builder.Append(", ");
}
builder.Append("?");
}
builder.Append(")");
}
string sqlString = builder.ToString();
#if DEBUG
System.Diagnostics.Trace.WriteLine("NuoDbBulkLoader::WriteToServer: " + sqlString);
#endif
if (this.connection.State != ConnectionState.Open)
{
this.connection.Open();
}
using (NuoDbCommand command = new NuoDbCommand(sqlString, this.connection))
{
command.Prepare();
int totalSize = 0;
// do the check for out-of-range values just once
foreach (NuoDbBulkLoaderColumnMapping mapping in mappings)
{
if (mapping.SourceColumn == null && mapping.SourceOrdinal < 0 || mapping.SourceOrdinal > feeder.FieldCount)
{
throw new IndexOutOfRangeException(String.Format("The specified ordinal of the source column ({0}) is outside the range of the column count ({1})",
new object[] { mapping.SourceOrdinal, feeder.FieldCount }));
}
}
while (true)
{
EncodedDataStream dataStream = new RemEncodedStream(connection.InternalConnection.protocolVersion);
dataStream.startMessage(Protocol.ExecuteBatchPreparedStatement);
dataStream.encodeInt(command.handle);
int batchCount = 0;
for (; batchCount < this.batchSize && feeder.MoveNext(); batchCount++)
{
dataStream.encodeInt(command.Parameters.Count);
if (mappings.Count == 0)
{
for (int i = 0; i < feeder.FieldCount; i++)
{
dataStream.encodeDotNetObject(feeder[i]);
}
}
else
{
foreach (NuoDbBulkLoaderColumnMapping mapping in mappings)
{
if (mapping.SourceColumn == null)
{
dataStream.encodeDotNetObject(feeder[mapping.SourceOrdinal]);
}
else
{
dataStream.encodeDotNetObject(feeder[mapping.SourceColumn]);
}
}
}
}
// the iterator hasn't found any more data to import, let's break out
if (batchCount == 0)
{
break;
}
dataStream.encodeInt(-1);
dataStream.encodeInt(batchCount);
totalSize += batchCount;
#if DEBUG
System.Diagnostics.Trace.WriteLine("NuoDbBulkLoader::WriteToServer: sending a batch of " + batchCount + " rows");
#endif
this.connection.InternalConnection.sendAndReceive(dataStream);
bool hasErrors = false;
string errorMessage = string.Empty;
for (int i = 0; i < batchCount; i++)
{
int result = dataStream.getInt();
if (result == EXECUTE_FAILED)
{
if (this.connection.InternalConnection.protocolVersion >= Protocol.PROTOCOL_VERSION6)
{
int sqlCode = dataStream.getInt();
string message = dataStream.getString();
errorMessage = AppendError(errorMessage, message, i);
}
hasErrors = true;
}
}
if (this.connection.InternalConnection.protocolVersion >= Protocol.PROTOCOL_VERSION3)
{
long txnId = dataStream.getLong();
int nodeId = dataStream.getInt();
long commitSequence = dataStream.getLong();
this.connection.InternalConnection.setLastTransaction(txnId, nodeId, commitSequence);
}
if (handlers.Count != 0)
{
BatchProcessedEventHandler[] tmpArray = new BatchProcessedEventHandler[handlers.Count];
handlers.CopyTo(tmpArray);
BatchProcessedEventArgs args = new BatchProcessedEventArgs();
args.BatchSize = batchCount;
args.TotalSize = totalSize;
args.HasErrors = hasErrors;
foreach (BatchProcessedEventHandler h in tmpArray)
{
h.Invoke(this, args);
}
}
if (hasErrors)
{
throw new NuoDbSqlException(errorMessage, NuoDbSqlCode.FindError("BATCH_UPDATE_ERROR"));
}
}
}
}
public NuoDbBulkLoaderColumnMapping Add(NuoDbBulkLoaderColumnMapping mapping)
{
List.Add(mapping);
return mapping;
}
private void WriteToServer(DataFeeder feeder)
{
if (this.tableName.Length == 0)
{
throw new ArgumentException("The name of the destination table hasn't been specified", "DestinationTableName");
}
StringBuilder builder = new StringBuilder();
builder.Append("INSERT INTO ");
if (this.tableName.Contains("."))
{
string[] parts = this.tableName.Split(new char[] { '.' });
bool first = true;
foreach (string part in parts)
{
if (first)
{
first = false;
}
else
{
builder.Append(".");
}
builder.Append("`");
builder.Append(part.Replace("`", "``"));
builder.Append("`");
}
}
else
{
builder.Append("`");
builder.Append(this.tableName.Replace("`", "``"));
builder.Append("`");
}
builder.Append(" ");
if (mappings.Count == 0)
{
// the target table has the same number and names of the columns as in the specified input rows
builder.Append("VALUES (");
for (int i = 0; i < feeder.FieldCount; i++)
{
if (i != 0)
{
builder.Append(", ");
}
builder.Append("?");
}
builder.Append(")");
}
else
{
DataRowCollection targetColumns = null;
builder.Append(" (");
for (int i = 0; i < mappings.Count; i++)
{
NuoDbBulkLoaderColumnMapping mapping = mappings[i];
if (i != 0)
{
builder.Append(", ");
}
builder.Append("`");
if (mapping.DestinationColumn == null)
{
// we are requested to map to a target column that is identified with its ordinal number, so
// fetch the schema of the target table to find out what is its name
if (targetColumns == null)
{
// split the destination table into its different parts
string[] parts = this.tableName.Split(new char[] { '.' });
DataTable targetSchema = this.connection.GetSchema("Columns", new string[] { null, // catalog
parts.Length == 2 ? parts[0] : null, // schema
parts.Length == 2 ? parts[1] : parts[0] // table
});
targetColumns = targetSchema.Rows;
}
if (mapping.DestinationOrdinal < 0 || mapping.DestinationOrdinal > targetColumns.Count)
{
throw new IndexOutOfRangeException(String.Format("The specified ordinal of the target column ({0}) is outside the range of the column count ({1}) of table {2}",
new object[] { mapping.DestinationOrdinal, targetColumns.Count, this.tableName }));
}
string columnName = (string)(targetColumns[mapping.DestinationOrdinal]["COLUMN_NAME"]);
builder.Append(columnName.Replace("`", "``"));
}
else
{
builder.Append(mapping.DestinationColumn.Replace("`", "``"));
}
builder.Append("`");
}
builder.Append(") VALUES (");
for (int i = 0; i < mappings.Count; i++)
{
if (i != 0)
{
builder.Append(", ");
}
builder.Append("?");
}
builder.Append(")");
}
string sqlString = builder.ToString();
#if DEBUG
System.Diagnostics.Trace.WriteLine("NuoDbBulkLoader::WriteToServer: " + sqlString);
#endif
if (this.connection.State != ConnectionState.Open)
{
this.connection.Open();
}
using (NuoDbCommand command = new NuoDbCommand(sqlString, this.connection))
{
if (mappings.Count > 0)
{
// do the check for out-of-range values just once
foreach (NuoDbBulkLoaderColumnMapping mapping in mappings)
{
if (mapping.SourceColumn == null && mapping.SourceOrdinal < 0 || mapping.SourceOrdinal > feeder.FieldCount)
{
throw new IndexOutOfRangeException(String.Format("The specified ordinal of the source column ({0}) is outside the range of the column count ({1})",
mapping.SourceOrdinal, feeder.FieldCount));
}
}
feeder = new FeederOrderer(feeder, mappings);
}
int batchCount = 0;
int totalSize = 0;
while ((batchCount = command.ExecuteBatch(feeder, this.batchSize)) > 0)
{
totalSize += batchCount;
#if DEBUG
System.Diagnostics.Trace.WriteLine("NuoDbBulkLoader::WriteToServer: sent a batch of " + batchCount + " rows");
#endif
if (handlers.Count != 0)
{
BatchProcessedEventHandler[] tmpArray = new BatchProcessedEventHandler[handlers.Count];
handlers.CopyTo(tmpArray);
BatchProcessedEventArgs args = new BatchProcessedEventArgs();
args.BatchSize = batchCount;
args.TotalSize = totalSize;
args.HasErrors = false;
foreach (BatchProcessedEventHandler h in tmpArray)
{
h.Invoke(this, args);
}
}
}
}
}
public NuoDbBulkLoaderColumnMapping Add(NuoDbBulkLoaderColumnMapping mapping)
{
List.Add(mapping);
return(mapping);
}