protected override DbSqlParserColumnCollection GatherTableColumns(DbSqlParserTable table)
{
OciStatementHandle stmtp = new OciStatementHandle(this._connection.ServiceContextHandle);
OciErrorHandle errorHandle = this._connection.ErrorHandle;
StringBuilder builder = new StringBuilder();
string schemaName = table.SchemaName;
string tableName = table.TableName;
DbSqlParserColumnCollection columns = new DbSqlParserColumnCollection();
builder.Append("select * from ");
if (!System.Data.Common.ADP.IsEmpty(schemaName))
{
builder.Append(schemaName);
builder.Append(".");
}
builder.Append(tableName);
string stmt = builder.ToString();
if ((TracedNativeMethods.OCIStmtPrepare(stmtp, errorHandle, stmt, OCI.SYNTAX.OCI_NTV_SYNTAX, OCI.MODE.OCI_DEFAULT, this._connection) == 0) && (TracedNativeMethods.OCIStmtExecute(this._connection.ServiceContextHandle, stmtp, errorHandle, 0, OCI.MODE.OCI_DESCRIBE_ONLY) == 0))
{
int num3;
stmtp.GetAttribute(OCI.ATTR.OCI_ATTR_PARAM_COUNT, out num3, errorHandle);
for (int i = 0; i < num3; i++)
{
string str;
OciParameterDescriptor handle = stmtp.GetDescriptor(i, errorHandle);
handle.GetAttribute(OCI.ATTR.OCI_ATTR_SQLCODE, out str, errorHandle, this._connection);
OciHandle.SafeDispose(ref handle);
str = this.QuotePrefixCharacter + str + this.QuoteSuffixCharacter;
columns.Add(null, schemaName, tableName, str, null);
}
}
OciHandle.SafeDispose(ref stmtp);
return(columns);
}
public override void Prepare()
{
IntPtr ptr;
OracleConnection.ExecutePermission.Demand();
Bid.ScopeEnter(out ptr, "<ora.OracleCommand.Prepare|API> %d#\n", this.ObjectID);
try
{
if (this.ConnectionIsClosed)
{
throw System.Data.Common.ADP.ClosedConnectionError();
}
if (System.Data.CommandType.Text == this.CommandType)
{
short num2;
OciStatementHandle statementHandle = this.GetStatementHandle();
int closeCount = this._connection.CloseCount;
string statementText = this.StatementText;
int rc = TracedNativeMethods.OCIStmtPrepare(statementHandle, this.ErrorHandle, statementText, OCI.SYNTAX.OCI_NTV_SYNTAX, OCI.MODE.OCI_DEFAULT, this.Connection);
if (rc != 0)
{
this.Connection.CheckError(this.ErrorHandle, rc);
}
statementHandle.GetAttribute(OCI.ATTR.OCI_ATTR_STMT_TYPE, out num2, this.ErrorHandle);
this._statementType = (OCI.STMT)num2;
if (OCI.STMT.OCI_STMT_SELECT == this._statementType)
{
rc = TracedNativeMethods.OCIStmtExecute(this._connection.ServiceContextHandle, statementHandle, this.ErrorHandle, 0, OCI.MODE.OCI_DESCRIBE_ONLY);
if (rc != 0)
{
this.Connection.CheckError(this.ErrorHandle, rc);
}
}
if (statementHandle != this._preparedStatementHandle)
{
OciHandle.SafeDispose(ref this._preparedStatementHandle);
}
this._preparedStatementHandle = statementHandle;
this._preparedAtCloseCount = closeCount;
}
else if (this._preparedStatementHandle != null)
{
OciHandle.SafeDispose(ref this._preparedStatementHandle);
}
}
finally
{
Bid.ScopeLeave(ref ptr);
}
}
private int ExecuteNonQueryInternal(bool needRowid, out OciRowidDescriptor rowidDescriptor)
{
OciStatementHandle statementHandle = null;
int num = -1;
try
{
try
{
ArrayList resultParameterOrdinals = new ArrayList();
statementHandle = this.GetStatementHandle();
this.Execute(statementHandle, CommandBehavior.Default, needRowid, out rowidDescriptor, out resultParameterOrdinals);
if (resultParameterOrdinals != null)
{
num = 0;
foreach (int num2 in resultParameterOrdinals)
{
OracleParameter parameter = this._parameterCollection[num2];
if (OracleType.Cursor != parameter.OracleType)
{
num += (int)parameter.Value;
}
}
return(num);
}
if (OCI.STMT.OCI_STMT_SELECT != this._statementType)
{
statementHandle.GetAttribute(OCI.ATTR.OCI_ATTR_ROW_COUNT, out num, this.ErrorHandle);
}
return(num);
}
finally
{
if (statementHandle != null)
{
this.ReleaseStatementHandle(statementHandle);
}
}
}
catch
{
throw;
}
return(num);
}
internal string Execute(OciStatementHandle statementHandle, CommandBehavior behavior, bool needRowid, out OciRowidDescriptor rowidDescriptor, out ArrayList resultParameterOrdinals)
{
if (this.ConnectionIsClosed)
{
throw System.Data.Common.ADP.ClosedConnectionError();
}
if ((this._transaction == null) && (this.Connection.Transaction != null))
{
throw System.Data.Common.ADP.TransactionRequired();
}
if (((this._transaction != null) && (this._transaction.Connection != null)) && (this.Connection != this._transaction.Connection))
{
throw System.Data.Common.ADP.TransactionConnectionMismatch();
}
rowidDescriptor = null;
this.Connection.RollbackDeadTransaction();
int rc = 0;
NativeBuffer parameterBuffer = null;
bool success = false;
bool[] flagArray = null;
SafeHandle[] handleArray = null;
OracleParameterBinding[] bindingArray = null;
string stmt = null;
resultParameterOrdinals = null;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
int num8;
short num13;
if (this._preparedStatementHandle != statementHandle)
{
stmt = this.StatementText;
rc = TracedNativeMethods.OCIStmtPrepare(statementHandle, this.ErrorHandle, stmt, OCI.SYNTAX.OCI_NTV_SYNTAX, OCI.MODE.OCI_DEFAULT, this.Connection);
if (rc != 0)
{
this.Connection.CheckError(this.ErrorHandle, rc);
}
}
statementHandle.GetAttribute(OCI.ATTR.OCI_ATTR_STMT_TYPE, out num13, this.ErrorHandle);
this._statementType = (OCI.STMT)num13;
if (OCI.STMT.OCI_STMT_SELECT != this._statementType)
{
num8 = 1;
}
else
{
num8 = 0;
if (CommandBehavior.SingleRow != behavior)
{
statementHandle.SetAttribute(OCI.ATTR.OCI_ATTR_PREFETCH_ROWS, 0, this.ErrorHandle);
statementHandle.SetAttribute(OCI.ATTR.OCI_ATTR_PREFETCH_MEMORY, 0, this.ErrorHandle);
}
}
OCI.MODE mode = OCI.MODE.OCI_DEFAULT;
if (num8 == 0)
{
if (IsBehavior(behavior, CommandBehavior.SchemaOnly))
{
mode |= OCI.MODE.OCI_DESCRIBE_ONLY;
}
}
else if (this._connection.TransactionState == TransactionState.AutoCommit)
{
mode |= OCI.MODE.OCI_COMMIT_ON_SUCCESS;
}
else if (TransactionState.GlobalStarted != this._connection.TransactionState)
{
this._connection.TransactionState = TransactionState.LocalStarted;
}
if ((((mode & OCI.MODE.OCI_DESCRIBE_ONLY) == OCI.MODE.OCI_DEFAULT) && (this._parameterCollection != null)) && (this._parameterCollection.Count > 0))
{
int offset = 0;
int count = this._parameterCollection.Count;
flagArray = new bool[count];
handleArray = new SafeHandle[count];
bindingArray = new OracleParameterBinding[count];
for (int i = 0; i < count; i++)
{
bindingArray[i] = new OracleParameterBinding(this, this._parameterCollection[i]);
bindingArray[i].PrepareForBind(this._connection, ref offset);
if ((OracleType.Cursor == this._parameterCollection[i].OracleType) || (0 < this._parameterCollection[i].CommandSetResult))
{
if (resultParameterOrdinals == null)
{
resultParameterOrdinals = new ArrayList();
}
resultParameterOrdinals.Add(i);
}
}
parameterBuffer = new NativeBuffer_ParameterBuffer(offset);
parameterBuffer.DangerousAddRef(ref success);
for (int j = 0; j < count; j++)
{
bindingArray[j].Bind(statementHandle, parameterBuffer, this._connection, ref flagArray[j], ref handleArray[j]);
}
}
rc = TracedNativeMethods.OCIStmtExecute(this.ServiceContextHandle, statementHandle, this.ErrorHandle, num8, mode);
if (rc != 0)
{
this.Connection.CheckError(this.ErrorHandle, rc);
}
if (bindingArray != null)
{
int length = bindingArray.Length;
for (int k = 0; k < length; k++)
{
bindingArray[k].PostExecute(parameterBuffer, this._connection);
bindingArray[k].Dispose();
bindingArray[k] = null;
}
bindingArray = null;
}
if (!needRowid || ((mode & OCI.MODE.OCI_DESCRIBE_ONLY) != OCI.MODE.OCI_DEFAULT))
{
return(stmt);
}
switch (this._statementType)
{
case OCI.STMT.OCI_STMT_UPDATE:
case OCI.STMT.OCI_STMT_DELETE:
case OCI.STMT.OCI_STMT_INSERT:
rowidDescriptor = statementHandle.GetRowid(this.EnvironmentHandle, this.ErrorHandle);
return(stmt);
}
rowidDescriptor = null;
}
finally
{
if (success)
{
parameterBuffer.DangerousRelease();
}
if (parameterBuffer != null)
{
parameterBuffer.Dispose();
parameterBuffer = null;
}
if (bindingArray != null)
{
int num10 = bindingArray.Length;
for (int m = 0; m < num10; m++)
{
if (bindingArray[m] != null)
{
bindingArray[m].Dispose();
bindingArray[m] = null;
}
}
bindingArray = null;
}
if ((flagArray != null) && (handleArray != null))
{
int num9 = flagArray.Length;
for (int n = 0; n < num9; n++)
{
if (flagArray[n])
{
handleArray[n].DangerousRelease();
}
}
}
}
return(stmt);
}