private bool ReadInternal()
{
int num;
bool flag;
if (this._endOfData)
{
return false;
}
int length = this._columnInfo.Length;
NativeBuffer_RowBuffer buffer = this._buffer;
bool success = false;
bool[] flagArray = new bool[length];
SafeHandle[] handleArray = new SafeHandle[length];
RuntimeHelpers.PrepareConstrainedRegions();
try
{
if (buffer == null)
{
int rowBufferLength = (this._rowsToPrefetch > 1) ? this._rowBufferLength : 0;
buffer = new NativeBuffer_RowBuffer(this._rowBufferLength, this._rowsToPrefetch);
buffer.DangerousAddRef(ref success);
for (num = 0; num < length; num++)
{
this._columnInfo[num].Bind(this._statementHandle, buffer, this.ErrorHandle, rowBufferLength);
}
this._buffer = buffer;
}
else
{
buffer.DangerousAddRef(ref success);
}
if (buffer.MoveNext())
{
return true;
}
if (this._isLastBuffer)
{
this._endOfData = true;
return false;
}
buffer.MoveFirst();
if (1 == this._rowsToPrefetch)
{
for (num = 0; num < length; num++)
{
this._columnInfo[num].Rebind(this._connection, ref flagArray[num], ref handleArray[num]);
}
}
int rc = TracedNativeMethods.OCIStmtFetch(this._statementHandle, this.ErrorHandle, this._rowsToPrefetch, OCI.FETCH.OCI_FETCH_NEXT, OCI.MODE.OCI_DEFAULT);
int num5 = this._rowsTotal;
this._statementHandle.GetAttribute(OCI.ATTR.OCI_ATTR_ROW_COUNT, out this._rowsTotal, this.ErrorHandle);
if (rc == 0)
{
return true;
}
if (1 == rc)
{
this._connection.CheckError(this.ErrorHandle, rc);
return true;
}
if (100 == rc)
{
int num4 = this._rowsTotal - num5;
if (num4 == 0)
{
if (this._rowsTotal == 0)
{
this._hasRows = 1;
}
this._endOfData = true;
return false;
}
buffer.NumberOfRows = num4;
this._isLastBuffer = true;
return true;
}
this._endOfData = true;
this._connection.CheckError(this.ErrorHandle, rc);
flag = false;
}
finally
{
if (1 == this._rowsToPrefetch)
{
for (num = 0; num < length; num++)
{
if (flagArray[num])
{
handleArray[num].DangerousRelease();
}
}
}
if (success)
{
buffer.DangerousRelease();
}
}
return flag;
}
private bool ReadInternal()
{
int num;
bool flag;
if (this._endOfData)
{
return(false);
}
int length = this._columnInfo.Length;
NativeBuffer_RowBuffer buffer = this._buffer;
bool success = false;
bool[] flagArray = new bool[length];
SafeHandle[] handleArray = new SafeHandle[length];
RuntimeHelpers.PrepareConstrainedRegions();
try
{
if (buffer == null)
{
int rowBufferLength = (this._rowsToPrefetch > 1) ? this._rowBufferLength : 0;
buffer = new NativeBuffer_RowBuffer(this._rowBufferLength, this._rowsToPrefetch);
buffer.DangerousAddRef(ref success);
for (num = 0; num < length; num++)
{
this._columnInfo[num].Bind(this._statementHandle, buffer, this.ErrorHandle, rowBufferLength);
}
this._buffer = buffer;
}
else
{
buffer.DangerousAddRef(ref success);
}
if (buffer.MoveNext())
{
return(true);
}
if (this._isLastBuffer)
{
this._endOfData = true;
return(false);
}
buffer.MoveFirst();
if (1 == this._rowsToPrefetch)
{
for (num = 0; num < length; num++)
{
this._columnInfo[num].Rebind(this._connection, ref flagArray[num], ref handleArray[num]);
}
}
int rc = TracedNativeMethods.OCIStmtFetch(this._statementHandle, this.ErrorHandle, this._rowsToPrefetch, OCI.FETCH.OCI_FETCH_NEXT, OCI.MODE.OCI_DEFAULT);
int num5 = this._rowsTotal;
this._statementHandle.GetAttribute(OCI.ATTR.OCI_ATTR_ROW_COUNT, out this._rowsTotal, this.ErrorHandle);
if (rc == 0)
{
return(true);
}
if (1 == rc)
{
this._connection.CheckError(this.ErrorHandle, rc);
return(true);
}
if (100 == rc)
{
int num4 = this._rowsTotal - num5;
if (num4 == 0)
{
if (this._rowsTotal == 0)
{
this._hasRows = 1;
}
this._endOfData = true;
return(false);
}
buffer.NumberOfRows = num4;
this._isLastBuffer = true;
return(true);
}
this._endOfData = true;
this._connection.CheckError(this.ErrorHandle, rc);
flag = false;
}
finally
{
if (1 == this._rowsToPrefetch)
{
for (num = 0; num < length; num++)
{
if (flagArray[num])
{
handleArray[num].DangerousRelease();
}
}
}
if (success)
{
buffer.DangerousRelease();
}
}
return(flag);
}
private object ExecuteScalarInternal(bool needCLStype, bool needRowid, out OciRowidDescriptor rowidDescriptor)
{
OciStatementHandle statementHandle = null;
object oracleValue = null;
int rc = 0;
try
{
statementHandle = this.GetStatementHandle();
ArrayList resultParameterOrdinals = new ArrayList();
this.Execute(statementHandle, CommandBehavior.Default, needRowid, out rowidDescriptor, out resultParameterOrdinals);
if (OCI.STMT.OCI_STMT_SELECT != this._statementType)
{
return oracleValue;
}
OracleColumn column = new OracleColumn(statementHandle, 0, this.ErrorHandle, this._connection);
int offset = 0;
bool success = false;
bool mustRelease = false;
SafeHandle handleToBind = null;
column.Describe(ref offset, this._connection, this.ErrorHandle);
NativeBuffer_RowBuffer buffer = new NativeBuffer_RowBuffer(offset, 1);
RuntimeHelpers.PrepareConstrainedRegions();
try
{
buffer.DangerousAddRef(ref success);
column.Bind(statementHandle, buffer, this.ErrorHandle, 0);
column.Rebind(this._connection, ref mustRelease, ref handleToBind);
rc = TracedNativeMethods.OCIStmtFetch(statementHandle, this.ErrorHandle, 1, OCI.FETCH.OCI_FETCH_NEXT, OCI.MODE.OCI_DEFAULT);
if (100 != rc)
{
if (rc != 0)
{
this.Connection.CheckError(this.ErrorHandle, rc);
}
if (needCLStype)
{
oracleValue = column.GetValue(buffer);
}
else
{
oracleValue = column.GetOracleValue(buffer);
}
}
}
finally
{
if (mustRelease)
{
handleToBind.DangerousRelease();
}
if (success)
{
buffer.DangerousRelease();
}
}
GC.KeepAlive(column);
}
finally
{
if (statementHandle != null)
{
this.ReleaseStatementHandle(statementHandle);
}
}
return oracleValue;
}
private object ExecuteScalarInternal(bool needCLStype, bool needRowid, out OciRowidDescriptor rowidDescriptor)
{
OciStatementHandle statementHandle = null;
object oracleValue = null;
int rc = 0;
try
{
statementHandle = this.GetStatementHandle();
ArrayList resultParameterOrdinals = new ArrayList();
this.Execute(statementHandle, CommandBehavior.Default, needRowid, out rowidDescriptor, out resultParameterOrdinals);
if (OCI.STMT.OCI_STMT_SELECT != this._statementType)
{
return(oracleValue);
}
OracleColumn column = new OracleColumn(statementHandle, 0, this.ErrorHandle, this._connection);
int offset = 0;
bool success = false;
bool mustRelease = false;
SafeHandle handleToBind = null;
column.Describe(ref offset, this._connection, this.ErrorHandle);
NativeBuffer_RowBuffer buffer = new NativeBuffer_RowBuffer(offset, 1);
RuntimeHelpers.PrepareConstrainedRegions();
try
{
buffer.DangerousAddRef(ref success);
column.Bind(statementHandle, buffer, this.ErrorHandle, 0);
column.Rebind(this._connection, ref mustRelease, ref handleToBind);
rc = TracedNativeMethods.OCIStmtFetch(statementHandle, this.ErrorHandle, 1, OCI.FETCH.OCI_FETCH_NEXT, OCI.MODE.OCI_DEFAULT);
if (100 != rc)
{
if (rc != 0)
{
this.Connection.CheckError(this.ErrorHandle, rc);
}
if (needCLStype)
{
oracleValue = column.GetValue(buffer);
}
else
{
oracleValue = column.GetOracleValue(buffer);
}
}
}
finally
{
if (mustRelease)
{
handleToBind.DangerousRelease();
}
if (success)
{
buffer.DangerousRelease();
}
}
GC.KeepAlive(column);
}
finally
{
if (statementHandle != null)
{
this.ReleaseStatementHandle(statementHandle);
}
}
return(oracleValue);
}
