/// <summary>
/// Gets the location of a <see cref="NpgsqlParameter">NpgsqlParameter</see> in the collection.
/// </summary>
/// <param name="value">The value of the <see cref="NpgsqlParameter">NpgsqlParameter</see> object to find.</param>
/// <returns>The zero-based index of the <see cref="NpgsqlParameter">NpgsqlParameter</see> object in the collection.</returns>
public override int IndexOf(object value)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "IndexOf", value);
CheckType(value);
return(this.InternalList.IndexOf((NpgsqlParameter)value));
}
/// <summary>
/// Copies <see cref="NpgsqlParameter">NpgsqlParameter</see> objects from the <see cref="NpgsqlParameterCollection">NpgsqlParameterCollection</see> to the specified array.
/// </summary>
/// <param name="array">An <see cref="System.Array">Array</see> to which to copy the <see cref="NpgsqlParameter">NpgsqlParameter</see> objects in the collection.</param>
/// <param name="index">The starting index of the array.</param>
public override void CopyTo(Array array, int index)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "CopyTo", array, index);
(InternalList as ICollection).CopyTo(array, index);
IRaiseItemChangedEvents x = InternalList as IRaiseItemChangedEvents;
}
/// <summary>
/// Gets the location of the <see cref="NpgsqlParameter">NpgsqlParameter</see> in the collection with a specific parameter name.
/// </summary>
/// <param name="parameterName">The name of the <see cref="NpgsqlParameter">NpgsqlParameter</see> object to find.</param>
/// <returns>The zero-based location of the <see cref="NpgsqlParameter">NpgsqlParameter</see> in the collection.</returns>
public override int IndexOf(string parameterName)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "IndexOf", parameterName);
int retIndex;
int scanIndex;
if ((parameterName[0] == ':') || (parameterName[0] == '@'))
{
parameterName = parameterName.Remove(0, 1);
}
// Using a dictionary is much faster for 5 or more items
if (this.InternalList.Count >= 5)
{
if (this.lookup == null)
{
this.lookup = new Dictionary <string, int>();
for (scanIndex = 0; scanIndex < this.InternalList.Count; scanIndex++)
{
var item = this.InternalList[scanIndex];
// Store only the first of each distinct value
if (!this.lookup.ContainsKey(item.CleanName))
{
this.lookup.Add(item.CleanName, scanIndex);
}
}
}
// Try to access the case sensitive parameter name first
if (this.lookup.TryGetValue(parameterName, out retIndex))
{
return(retIndex);
}
// Case sensitive lookup failed, generate a case insensitive lookup
if (this.lookupIgnoreCase == null)
{
this.lookupIgnoreCase = new Dictionary <string, int>(StringComparer.InvariantCultureIgnoreCase);
for (scanIndex = 0; scanIndex < this.InternalList.Count; scanIndex++)
{
var item = this.InternalList[scanIndex];
// Store only the first of each distinct value
if (!this.lookupIgnoreCase.ContainsKey(item.CleanName))
{
this.lookupIgnoreCase.Add(item.CleanName, scanIndex);
}
}
}
// Then try to access the case insensitive parameter name
if (this.lookupIgnoreCase.TryGetValue(parameterName, out retIndex))
{
return(retIndex);
}
return(-1);
}
retIndex = -1;
// Scan until a case insensitive match is found, and save its index for possible return.
// Items that don't match loosely cannot possibly match exactly.
for (scanIndex = 0; scanIndex < this.InternalList.Count; scanIndex++)
{
var item = this.InternalList[scanIndex];
if (string.Compare(parameterName, item.CleanName, StringComparison.InvariantCultureIgnoreCase) == 0)
{
retIndex = scanIndex;
break;
}
}
// Then continue the scan until a case sensitive match is found, and return it.
// If a case insensitive match was found, it will be re-checked for an exact match.
for ( ; scanIndex < this.InternalList.Count; scanIndex++)
{
var item = this.InternalList[scanIndex];
if (item.CleanName == parameterName)
{
return(scanIndex);
}
}
// If a case insensitive match was found, it will be returned here.
return(retIndex);
}
/// <summary>
/// Removes the specified <see cref="NpgsqlParameter">NpgsqlParameter</see> from the collection.
/// </summary>
/// <param name="oValue">The <see cref="NpgsqlParameter">NpgsqlParameter</see> to remove from the collection.</param>
public override void Remove(object oValue)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "Remove", oValue);
CheckType(oValue);
Remove(oValue as NpgsqlParameter);
}
/// <summary>
/// Sends the <see cref="NpgsqlCommand.CommandText">CommandText</see> to
/// the <see cref="NpgsqlConnection">Connection</see> and builds a
/// <see cref="NpgsqlDataReader">NpgsqlDataReader</see>.
/// </summary>
/// <returns>A <see cref="NpgsqlDataReader">NpgsqlDataReader</see> object.</returns>
public new NpgsqlDataReader ExecuteReader()
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "ExecuteReader");
return(ExecuteReader(CommandBehavior.Default));
}
/// <summary>
/// Gets a value indicating whether a <see cref="NpgsqlParameter">NpgsqlParameter</see> with the specified parameter name exists in the collection.
/// </summary>
/// <param name="parameterName">The name of the <see cref="NpgsqlParameter">NpgsqlParameter</see> object to find.</param>
/// <returns><b>true</b> if the collection contains the parameter; otherwise, <b>false</b>.</returns>
public override bool Contains(string parameterName)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "Contains", parameterName);
return(IndexOf(parameterName) != -1);
}
/// <summary>
/// Adds a <see cref="NpgsqlParameter">NpgsqlParameter</see> to the <see cref="NpgsqlParameterCollection">NpgsqlParameterCollection</see> given the parameter name and the data type.
/// </summary>
/// <param name="parameterName">The name of the parameter.</param>
/// <param name="parameterType">One of the DbType values.</param>
/// <returns>The index of the new <see cref="NpgsqlParameter">NpgsqlParameter</see> object.</returns>
public NpgsqlParameter Add(string parameterName, NpgsqlDbType parameterType)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "Add", parameterName, parameterType);
return(this.Add(new NpgsqlParameter(parameterName, parameterType)));
}
/// <summary>
/// Process this.commandText, trimming each distinct command and substituting paramater
/// tokens.
/// </summary>
/// <param name="prepare"></param>
/// <returns>UTF8 encoded command ready to be sent to the backend.</returns>
private byte[] GetCommandText(bool prepare)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "GetCommandText");
MemoryStream commandBuilder = new MemoryStream();
if (commandType == CommandType.TableDirect)
{
foreach (var table in commandText.Split(';'))
{
if (table.Trim().Length == 0)
{
continue;
}
commandBuilder
.WriteString("SELECT * FROM ")
.WriteString(table)
.WriteString(";");
}
}
else if (commandType == CommandType.StoredProcedure)
{
if (!prepare && !functionChecksDone)
{
functionNeedsColumnListDefinition = Parameters.Count != 0 && CheckFunctionNeedsColumnDefinitionList();
functionChecksDone = true;
}
commandBuilder.WriteString("SELECT * FROM ");
if (commandText.TrimEnd().EndsWith(")"))
{
if (!AppendCommandReplacingParameterValues(commandBuilder, commandText, prepare, false))
{
throw new NpgsqlException("Multiple queries not supported for stored procedures");
}
}
else
{
commandBuilder
.WriteString(commandText)
.WriteBytes((byte)ASCIIBytes.ParenLeft);
if (prepare)
{
AppendParameterPlaceHolders(commandBuilder);
}
else
{
AppendParameterValues(commandBuilder);
}
commandBuilder.WriteBytes((byte)ASCIIBytes.ParenRight);
}
if (!prepare && functionNeedsColumnListDefinition)
{
AddFunctionColumnListSupport(commandBuilder);
}
}
else
{
if (!AppendCommandReplacingParameterValues(commandBuilder, commandText, prepare, !prepare))
{
throw new NpgsqlException("Multiple queries not supported for prepared statements");
}
}
return(commandBuilder.ToArray());
}
/// <summary>
/// Creates and returns a <see cref="System.Data.Common.DbCommand">DbCommand</see>
/// object associated with the <see cref="System.Data.Common.DbConnection">IDbConnection</see>.
/// </summary>
/// <returns>A <see cref="System.Data.Common.DbCommand">DbCommand</see> object.</returns>
protected override DbCommand CreateDbCommand()
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "CreateDbCommand");
return(CreateCommand());
}
/// <summary>
/// Adds a <see cref="NpgsqlParameter">NpgsqlParameter</see> to the <see cref="NpgsqlParameterCollection">NpgsqlParameterCollection</see> given the specified parameter name and value.
/// </summary>
/// <param name="parameterName">The name of the <see cref="NpgsqlParameter">NpgsqlParameter</see>.</param>
/// <param name="value">The Value of the <see cref="NpgsqlParameter">NpgsqlParameter</see> to add to the collection.</param>
/// <returns>The paramater that was added.</returns>
public NpgsqlParameter AddWithValue(string parameterName, object value)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "AddWithValue", parameterName, value);
return(this.Add(new NpgsqlParameter(parameterName, value)));
}
/// <summary>
/// Begins a database transaction.
/// </summary>
/// <returns>A <see cref="NpgsqlTransaction">NpgsqlTransaction</see>
/// object representing the new transaction.</returns>
/// <remarks>
/// Currently there's no support for nested transactions.
/// </remarks>
public new NpgsqlTransaction BeginTransaction()
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "BeginTransaction");
return(this.BeginTransaction(IsolationLevel.ReadCommitted));
}
/// <summary>
/// Begins a database transaction with the specified isolation level.
/// </summary>
/// <param name="isolationLevel">The <see cref="System.Data.IsolationLevel">isolation level</see> under which the transaction should run.</param>
/// <returns>An <see cref="System.Data.Common.DbTransaction">DbTransaction</see>
/// object representing the new transaction.</returns>
/// <remarks>
/// Currently the IsolationLevel ReadCommitted and Serializable are supported by the PostgreSQL backend.
/// There's no support for nested transactions.
/// </remarks>
protected override DbTransaction BeginDbTransaction(IsolationLevel isolationLevel)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "BeginDbTransaction", isolationLevel);
return(BeginTransaction(isolationLevel));
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="selectCommand"></param>
public NpgsqlDataAdapter(NpgsqlCommand selectCommand)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, CLASSNAME);
SelectCommand = selectCommand;
}
/// <summary>
/// Returns an enumerator that can iterate through the collection.
/// </summary>
/// <returns>An <see cref="System.Collections.IEnumerator">IEnumerator</see> that can be used to iterate through the collection.</returns>
public override IEnumerator GetEnumerator()
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "GetEnumerator");
return(this.InternalList.GetEnumerator());
}
/// <summary>
/// Adds a <see cref="NpgsqlParameter">NpgsqlParameter</see> to the <see cref="NpgsqlParameterCollection">NpgsqlParameterCollection</see> with the parameter name, the data type, the column length, and the source column name.
/// </summary>
/// <param name="parameterName">The name of the parameter.</param>
/// <param name="parameterType">One of the DbType values.</param>
/// <param name="size">The length of the column.</param>
/// <param name="sourceColumn">The name of the source column.</param>
/// <returns>The index of the new <see cref="NpgsqlParameter">NpgsqlParameter</see> object.</returns>
public NpgsqlParameter Add(string parameterName, NpgsqlDbType parameterType, int size, string sourceColumn)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "Add", parameterName, parameterType, size, sourceColumn);
return(this.Add(new NpgsqlParameter(parameterName, parameterType, size, sourceColumn)));
}
/// <summary>
/// Initializes a new instance of the NpgsqlParameterCollection class.
/// </summary>
internal NpgsqlParameterCollection()
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, CLASSNAME);
InvalidateHashLookups();
}
/// <summary>
/// Removes the specified <see cref="NpgsqlParameter">NpgsqlParameter</see> from the collection using the parameter name.
/// </summary>
/// <param name="parameterName">The name of the <see cref="NpgsqlParameter">NpgsqlParameter</see> object to retrieve.</param>
public override void RemoveAt(string parameterName)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "RemoveAt", parameterName);
RemoveAt(this.IndexOf(parameterName));
}
internal static void LogStringWritten(string theString)
{
NpgsqlEventLog.LogMsg("Log_StringWritten", LogLevel.Debug, theString);
}
public NpgsqlPasswordPacket(byte[] password)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, CLASSNAME);
this.password = password;
}
