public override void Parse(NpgsqlConnector context, NpgsqlParse parse)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "Parse");
BufferedStream stream = new BufferedStream(context.Stream);
parse.WriteToStream(stream, context.Encoding);
stream.Flush();
}
public override void Parse(NpgsqlConnector context, NpgsqlParse parse)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "Parse");
Stream stream = context.Stream;
parse.WriteToStream(stream);
//stream.Flush();
}
public override void Parse(NpgsqlConnector context, NpgsqlParse parse)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "Parse");
Stream stream = context.Stream;
parse.WriteToStream(stream);
//stream.Flush();
}
internal void Parse (NpgsqlParse parse)
{
CurrentState.Parse(this, parse);
}
public virtual void Parse(NpgsqlConnector context, NpgsqlParse parse)
{
throw new InvalidOperationException("Internal Error! " + this);
}
private void PrepareInternal()
{
if (m_Connector.BackendProtocolVersion == ProtocolVersion.Version2)
{
planName = Connector.NextPlanName();
preparedCommandText = GetCommandText(true, false);
ExecuteBlind(m_Connector, preparedCommandText);
prepared = PrepareStatus.V2Prepared;
// Tell to mediator what command is being sent.
m_Connector.Mediator.SetSqlSent(preparedCommandText, NpgsqlMediator.SQLSentType.Prepare);
}
else
{
// Use the extended query parsing...
planName = m_Connector.NextPlanName();
String portalName = "";
preparedCommandText = GetCommandText(true, true);
NpgsqlParse parse = new NpgsqlParse(planName, preparedCommandText, new Int32[] { });
NpgsqlDescribe statementDescribe = new NpgsqlDescribeStatement(planName);
IEnumerable <IServerResponseObject> responseEnum;
NpgsqlRowDescription returnRowDesc = null;
// Write Parse, Describe, and Sync messages to the wire.
m_Connector.Parse(parse);
m_Connector.Describe(statementDescribe);
m_Connector.Sync();
// Tell to mediator what command is being sent.
m_Connector.Mediator.SetSqlSent(preparedCommandText, NpgsqlMediator.SQLSentType.Parse);
// Flush and wait for response.
responseEnum = m_Connector.ProcessBackendResponsesEnum();
// Look for a NpgsqlRowDescription in the responses, discarding everything else.
foreach (IServerResponseObject response in responseEnum)
{
if (response is NpgsqlRowDescription)
{
returnRowDesc = (NpgsqlRowDescription)response;
}
else if (response is IDisposable)
{
(response as IDisposable).Dispose();
}
}
Int16[] resultFormatCodes;
if (returnRowDesc != null)
{
resultFormatCodes = new Int16[returnRowDesc.NumFields];
for (int i = 0; i < returnRowDesc.NumFields; i++)
{
NpgsqlRowDescription.FieldData returnRowDescData = returnRowDesc[i];
if (returnRowDescData.TypeInfo != null)
{
// Binary format?
// PG always defaults to text encoding. We can fix up the row description
// here based on support for binary encoding. Once this is done,
// there is no need to request another row description after Bind.
returnRowDescData.FormatCode = returnRowDescData.TypeInfo.SupportsBinaryBackendData ? FormatCode.Binary : FormatCode.Text;
resultFormatCodes[i] = (Int16)returnRowDescData.FormatCode;
}
else
{
// Text format (default).
resultFormatCodes[i] = (Int16)FormatCode.Text;
}
}
}
else
{
resultFormatCodes = new Int16[] { 0 };
}
// Save the row description for use with all future Executes.
currentRowDescription = returnRowDesc;
// The Bind and Execute message objects live through multiple Executes.
// Only Bind changes at all between Executes, which is done in BindParameters().
bind = new NpgsqlBind(portalName, planName, new Int16[Parameters.Count], null, resultFormatCodes);
execute = new NpgsqlExecute(portalName, 0);
prepared = PrepareStatus.V3Prepared;
}
}
/// <summary>
/// Creates a prepared version of the command on a PostgreSQL server.
/// </summary>
public override void Prepare()
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "Prepare");
// Check the connection state.
CheckConnectionState();
// reset any responses just before getting new ones
Connector.Mediator.ResetResponses();
// Set command timeout.
m_Connector.Mediator.CommandTimeout = CommandTimeout;
if (!m_Connector.SupportsPrepare)
{
return; // Do nothing.
}
if (m_Connector.BackendProtocolVersion == ProtocolVersion.Version2)
{
using (NpgsqlCommand command = new NpgsqlCommand(GetPrepareCommandText(), m_Connector))
{
command.ExecuteBlind();
}
}
else
{
using (m_Connector.BlockNotificationThread())
{
try
{
// Use the extended query parsing...
planName = m_Connector.NextPlanName();
String portalName = m_Connector.NextPortalName();
parse = new NpgsqlParse(planName, GetParseCommandText(), new Int32[] { });
m_Connector.Parse(parse);
// We need that because Flush() doesn't cause backend to send
// ReadyForQuery on error. Without ReadyForQuery, we don't return
// from query extended processing.
// We could have used Connector.Flush() which sends us back a
// ReadyForQuery, but on postgresql server below 8.1 there is an error
// with extended query processing which hinders us from using it.
m_Connector.RequireReadyForQuery = false;
m_Connector.Flush();
// Description...
NpgsqlDescribe describe = new NpgsqlDescribe('S', planName);
m_Connector.Describe(describe);
NpgsqlRowDescription returnRowDesc = m_Connector.Sync();
Int16[] resultFormatCodes;
if (returnRowDesc != null)
{
resultFormatCodes = new Int16[returnRowDesc.NumFields];
for (int i = 0; i < returnRowDesc.NumFields; i++)
{
NpgsqlRowDescription.FieldData returnRowDescData = returnRowDesc[i];
if (returnRowDescData.TypeInfo != null && returnRowDescData.TypeInfo.NpgsqlDbType == NpgsqlDbType.Bytea)
{
// Binary format
resultFormatCodes[i] = (Int16)FormatCode.Binary;
}
else
{
// Text Format
resultFormatCodes[i] = (Int16)FormatCode.Text;
}
}
}
else
{
resultFormatCodes = new Int16[] { 0 };
}
bind = new NpgsqlBind("", planName, new Int16[Parameters.Count], null, resultFormatCodes);
}
catch (IOException e)
{
throw ClearPoolAndCreateException(e);
}
catch
{
// As per documentation:
// "[...] When an error is detected while processing any extended-query message,
// the backend issues ErrorResponse, then reads and discards messages until a
// Sync is reached, then issues ReadyForQuery and returns to normal message processing.[...]"
// So, send a sync command if we get any problems.
m_Connector.Sync();
throw;
}
}
}
}
public virtual void Parse(NpgsqlConnector context, NpgsqlParse parse)
{
throw new InvalidOperationException("Internal Error! " + this);
}
internal void Parse(NpgsqlParse parse)
{
CurrentState.Parse(this, parse);
}
/// <summary>
/// Creates a prepared version of the command on a PostgreSQL server.
/// </summary>
public void Prepare()
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "Prepare");
// Check the connection state.
CheckConnectionState();
if (! Connector.SupportsPrepare)
{
return; // Do nothing.
}
if (connector.BackendProtocolVersion == ProtocolVersion.Version2)
{
NpgsqlCommand command = new NpgsqlCommand(GetPrepareCommandText(), connector );
command.ExecuteNonQuery();
}
else
{
// Use the extended query parsing...
//planName = "NpgsqlPlan" + Connector.NextPlanIndex();
planName = Connector.NextPlanName();
String portalName = Connector.NextPortalName();
parse = new NpgsqlParse(planName, GetParseCommandText(), new Int32[] {});
Connector.Parse(parse);
Connector.Mediator.RequireReadyForQuery = false;
Connector.Flush();
// Check for errors and/or notifications and do the Right Thing.
connector.CheckErrorsAndNotifications();
bind = new NpgsqlBind("", planName, new Int16[] {0}, null, new Int16[] {0});
}
}
private void PrepareInternal()
{
// Use the extended query parsing...
planName = m_Connector.NextPlanName();
String portalName = "";
preparedCommandText = GetCommandText(true, true);
NpgsqlParse parse = new NpgsqlParse(planName, preparedCommandText, new Int32[] { });
NpgsqlDescribe statementDescribe = new NpgsqlDescribeStatement(planName);
IEnumerable<IServerResponseObject> responseEnum;
NpgsqlRowDescription returnRowDesc = null;
// Write Parse, Describe, and Sync messages to the wire.
m_Connector.Parse(parse);
m_Connector.Describe(statementDescribe);
m_Connector.Sync();
// Tell to mediator what command is being sent.
m_Connector.Mediator.SetSqlSent(preparedCommandText, NpgsqlMediator.SQLSentType.Parse);
// Flush and wait for response.
responseEnum = m_Connector.ProcessBackendResponsesEnum();
// Look for a NpgsqlRowDescription in the responses, discarding everything else.
foreach (IServerResponseObject response in responseEnum)
{
if (response is NpgsqlRowDescription)
{
returnRowDesc = (NpgsqlRowDescription)response;
}
else if (response is IDisposable)
{
(response as IDisposable).Dispose();
}
}
Int16[] resultFormatCodes;
if (returnRowDesc != null)
{
resultFormatCodes = new Int16[returnRowDesc.NumFields];
for (int i = 0; i < returnRowDesc.NumFields; i++)
{
NpgsqlRowDescription.FieldData returnRowDescData = returnRowDesc[i];
if (returnRowDescData.TypeInfo != null)
{
// Binary format?
// PG always defaults to text encoding. We can fix up the row description
// here based on support for binary encoding. Once this is done,
// there is no need to request another row description after Bind.
returnRowDescData.FormatCode = returnRowDescData.TypeInfo.SupportsBinaryBackendData ? FormatCode.Binary : FormatCode.Text;
resultFormatCodes[i] = (Int16)returnRowDescData.FormatCode;
}
else
{
// Text format (default).
resultFormatCodes[i] = (Int16)FormatCode.Text;
}
}
}
else
{
resultFormatCodes = new Int16[] { 0 };
}
// Save the row description for use with all future Executes.
currentRowDescription = returnRowDesc;
// The Bind and Execute message objects live through multiple Executes.
// Only Bind changes at all between Executes, which is done in BindParameters().
bind = new NpgsqlBind(portalName, planName, new Int16[Parameters.Count], null, resultFormatCodes);
execute = new NpgsqlExecute(portalName, 0);
prepared = PrepareStatus.Prepared;
}
public virtual void Parse(NpgsqlConnector context, NpgsqlParse parse)
{
throw new InvalidOperationException("¬нутренн¤¤ ќшибка! " + this);
}
internal void Parse(NpgsqlParse parse)
{
_log.Debug("Sending parse message");
parse.WriteToStream(Stream);
}
/// <summary>
/// Creates a prepared version of the command on a PostgreSQL server.
/// </summary>
public void Prepare()
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "Prepare");
// Check the connection state.
CheckConnectionState();
// reset any responses just before getting new ones
Connector.Mediator.ResetResponses();
// Set command timeout.
connector.Mediator.CommandTimeout = CommandTimeout;
if (! connector.SupportsPrepare)
{
return; // Do nothing.
}
if (connector.BackendProtocolVersion == ProtocolVersion.Version2)
{
NpgsqlCommand command = new NpgsqlCommand(GetPrepareCommandText(), connector );
command.ExecuteNonQuery();
}
else
{
try
{
connector.StopNotificationThread();
// Use the extended query parsing...
planName = connector.NextPlanName();
String portalName = connector.NextPortalName();
parse = new NpgsqlParse(planName, GetParseCommandText(), new Int32[] {});
connector.Parse(parse);
// We need that because Flush() doesn't cause backend to send
// ReadyForQuery on error. Without ReadyForQuery, we don't return
// from query extended processing.
// We could have used Connector.Flush() which sends us back a
// ReadyForQuery, but on postgresql server below 8.1 there is an error
// with extended query processing which hinders us from using it.
connector.Mediator.RequireReadyForQuery = false;
connector.Flush();
// Check for errors and/or notifications and do the Right Thing.
connector.CheckErrorsAndNotifications();
// Description...
NpgsqlDescribe describe = new NpgsqlDescribe('S', planName);
connector.Describe(describe);
connector.Sync();
Npgsql.NpgsqlRowDescription returnRowDesc = connector.Mediator.LastRowDescription;
Int16[] resultFormatCodes;
if (returnRowDesc != null)
{
resultFormatCodes = new Int16[returnRowDesc.NumFields];
for (int i=0; i < returnRowDesc.NumFields; i++)
{
Npgsql.NpgsqlRowDescriptionFieldData returnRowDescData = returnRowDesc[i];
if (returnRowDescData.type_info != null && returnRowDescData.type_info.NpgsqlDbType == NpgsqlTypes.NpgsqlDbType.Bytea)
{
// Binary format
resultFormatCodes[i] = (Int16)FormatCode.Binary;
}
else
// Text Format
resultFormatCodes[i] = (Int16)FormatCode.Text;
}
}
else
resultFormatCodes = new Int16[]{0};
bind = new NpgsqlBind("", planName, new Int16[Parameters.Count], null, resultFormatCodes);
}
catch (IOException e)
{
ClearPoolAndThrowException(e);
}
catch
{
// See ExecuteCommand method for a discussion of this.
connector.Sync();
throw;
}
finally
{
connector.ResumeNotificationThread();
}
}
}
private void PrepareInternal()
{
if (m_Connector.BackendProtocolVersion == ProtocolVersion.Version2)
{
using (NpgsqlCommand command = new NpgsqlCommand(GetPrepareCommandText(), m_Connector))
{
command.ExecuteBlind();
prepared = PrepareStatus.V2Prepared;
}
}
else
{
// Use the extended query parsing...
planName = m_Connector.NextPlanName();
String portalName = "";
NpgsqlParse parse = new NpgsqlParse(planName, GetParseCommandText(), new Int32[] { });
NpgsqlDescribe statementDescribe = new NpgsqlDescribeStatement(planName);
IEnumerable<IServerResponseObject> responseEnum;
NpgsqlRowDescription returnRowDesc = null;
// Write Parse, Describe, and Sync messages to the wire.
m_Connector.Parse(parse);
m_Connector.Describe(statementDescribe);
m_Connector.Sync();
// Flush and wait for response.
responseEnum = m_Connector.ProcessBackendResponsesEnum();
// Look for a NpgsqlRowDescription in the responses, discarding everything else.
foreach (IServerResponseObject response in responseEnum)
{
if (response is NpgsqlRowDescription)
{
returnRowDesc = (NpgsqlRowDescription)response;
}
else if (response is IDisposable)
{
(response as IDisposable).Dispose();
}
}
Int16[] resultFormatCodes;
if (returnRowDesc != null)
{
resultFormatCodes = new Int16[returnRowDesc.NumFields];
for (int i = 0; i < returnRowDesc.NumFields; i++)
{
NpgsqlRowDescription.FieldData returnRowDescData = returnRowDesc[i];
if (returnRowDescData.TypeInfo != null)
{
// Binary format?
resultFormatCodes[i] = returnRowDescData.TypeInfo.SupportsBinaryBackendData ? (Int16)FormatCode.Binary : (Int16)FormatCode.Text;
}
else
{
// Text Format
resultFormatCodes[i] = (Int16)FormatCode.Text;
}
}
}
else
{
resultFormatCodes = new Int16[] { 0 };
}
// The Bind and Execute message objects live through multiple Executes.
// Only Bind changes at all between Executes, which is done in BindParameters().
bind = new NpgsqlBind(portalName, planName, new Int16[Parameters.Count], null, resultFormatCodes);
execute = new NpgsqlExecute(portalName, 0);
prepared = PrepareStatus.V3Prepared;
}
}
