/// <summary>
/// Prepare (if needed) and execute select statement
/// Only object set returned by the select for updated statement allows
/// update and deletion of the objects.
/// </summary>
/// <param name="forUpdate">if cursor is opened in for update mode</param>
/// <returns>object set with the selected objects</returns>
///
public ObjectSet fetch(bool forUpdate)
{
int i, n;
ComBuffer buf;
if (!prepared) {
buf = new ComBuffer(Connection.CLICommand.cli_cmd_prepare_and_execute, stmtId);
n = tableDesc.nColumns;
buf.putByte(nParams);
buf.putByte(n);
int len = stmtLen;
bool addNull = false;
if (len == 0 || stmt[len-1] != 0) {
addNull = true;
len += nParams;
buf.putShort(len+1);
} else {
len += nParams;
buf.putShort(len);
}
i = 0;
Parameter p = parameters;
do {
byte ch = stmt[i++];
buf.putByte(ch);
len -= 1;
if (ch == '\0') {
if (len != 0) {
if (p.type == Connection.CLIType.cli_undefined) {
throw new CliError("Unbound parameter " + p.name);
}
buf.putByte((int)p.type);
p = p.next;
len -= 1;
}
}
} while (len != 0);
if (addNull) {
buf.putByte('\0');
}
tableDesc.writeColumnDefs(buf);
} else { // statement was already prepared
buf = new ComBuffer(Connection.CLICommand.cli_cmd_execute, stmtId);
}
this.forUpdate = forUpdate;
buf.putByte(forUpdate ? 1 : 0);
for (Parameter p = parameters; p != null; p = p.next) {
switch (p.type) {
case Connection.CLIType.cli_oid:
case Connection.CLIType.cli_int4:
buf.putInt(p.ivalue);
break;
case Connection.CLIType.cli_int1:
case Connection.CLIType.cli_bool:
buf.putByte((byte)p.ivalue);
break;
case Connection.CLIType.cli_int2:
buf.putShort((short)p.ivalue);
break;
case Connection.CLIType.cli_int8:
buf.putLong(p.lvalue);
break;
case Connection.CLIType.cli_real4:
buf.putFloat(p.fvalue);
break;
case Connection.CLIType.cli_real8:
buf.putDouble(p.dvalue);
break;
case Connection.CLIType.cli_asciiz:
buf.putAsciiz(p.svalue);
break;
}
}
prepared = true;
return new ObjectSet(this, con.sendReceive(buf));
}
internal void writeColumnValues(ComBuffer buf, Object obj)
{
int i, j, n, len;
for (i = 0, n = nColumns; i < n; i++)
{
switch (types[i])
{
case Connection.CLIType.cli_int1:
buf.putByte((byte)columns[i].GetValue(obj));
break;
case Connection.CLIType.cli_int2:
buf.putShort((short)columns[i].GetValue(obj));
break;
case Connection.CLIType.cli_int4:
buf.putInt((int)columns[i].GetValue(obj));
break;
case Connection.CLIType.cli_int8:
buf.putLong((long)columns[i].GetValue(obj));
break;
case Connection.CLIType.cli_real4:
buf.putFloat((float)columns[i].GetValue(obj));
break;
case Connection.CLIType.cli_real8:
buf.putDouble((double)columns[i].GetValue(obj));
break;
case Connection.CLIType.cli_bool:
buf.putByte((bool)columns[i].GetValue(obj) ? 1 : 0);
break;
case Connection.CLIType.cli_oid:
Reference r = (Reference)columns[i].GetValue(obj);
buf.putInt(r != null ? r.oid : 0);
break;
case Connection.CLIType.cli_rectangle:
Rectangle rect = (Rectangle)columns[i].GetValue(obj);
if (rect == null)
{
rect = new Rectangle();
}
buf.putRectangle(rect);
break;
case Connection.CLIType.cli_asciiz:
buf.putString((string)columns[i].GetValue(obj));
break;
case Connection.CLIType.cli_datetime:
buf.putInt((int)(((DateTime)columns[i].GetValue(obj)).Ticks / 1000000));
break;
case Connection.CLIType.cli_array_of_int1:
buf.putByteArray((byte[])columns[i].GetValue(obj));
break;
case Connection.CLIType.cli_array_of_int2:
{
short[] arr = (short[])columns[i].GetValue(obj);
len = arr == null ? 0 : arr.Length;
buf.putInt(len);
for (j = 0; j < len; j++)
{
buf.putShort(arr[j]);
}
break;
}
case Connection.CLIType.cli_array_of_int4:
{
int[] arr = (int[])columns[i].GetValue(obj);
len = arr == null ? 0 : arr.Length;
buf.putInt(len);
for (j = 0; j < len; j++)
{
buf.putInt(arr[j]);
}
break;
}
case Connection.CLIType.cli_array_of_int8:
{
long[] arr = (long[])columns[i].GetValue(obj);
len = arr == null ? 0 : arr.Length;
buf.putInt(len);
for (j = 0; j < len; j++)
{
buf.putLong(arr[j]);
}
break;
}
case Connection.CLIType.cli_array_of_real4:
{
float[] arr = (float[])columns[i].GetValue(obj);
len = arr == null ? 0 : arr.Length;
buf.putInt(len);
for (j = 0; j < len; j++)
{
buf.putFloat(arr[j]);
}
break;
}
case Connection.CLIType.cli_array_of_real8:
{
double[] arr = (double[])columns[i].GetValue(obj);
len = arr == null ? 0 : arr.Length;
buf.putInt(len);
for (j = 0; j < len; j++)
{
buf.putDouble(arr[j]);
}
break;
}
case Connection.CLIType.cli_array_of_bool:
{
bool[] arr = (bool[])columns[i].GetValue(obj);
len = arr == null ? 0 : arr.Length;
buf.putInt(len);
for (j = 0; j < len; j++)
{
buf.putByte(arr[j] ? 1 : 0);
}
break;
}
case Connection.CLIType.cli_array_of_oid:
{
Reference[] arr = (Reference[])columns[i].GetValue(obj);
len = arr == null ? 0 : arr.Length;
buf.putInt(len);
for (j = 0; j < len; j++)
{
buf.putInt(arr[j] != null ? arr[j].oid : 0);
}
break;
}
case Connection.CLIType.cli_array_of_string:
{
string[] arr = (string[])columns[i].GetValue(obj);
len = arr == null ? 0 : arr.Length;
buf.putInt(len);
for (j = 0; j < len; j++)
{
buf.putAsciiz(arr[j]);
}
break;
}
case Connection.CLIType.cli_autoincrement:
break;
default:
throw new CliError("Unsupported type " + types[i]);
}
}
}
internal void writeColumnValues(ComBuffer buf, Object obj)
{
int i, j, n, len;
for (i = 0, n = nColumns; i < n; i++)
{
switch (types[i])
{
case Connection.CLIType.cli_int1:
buf.putByte((byte)columns[i].GetValue(obj));
break;
case Connection.CLIType.cli_int2:
buf.putShort((short)columns[i].GetValue(obj));
break;
case Connection.CLIType.cli_int4:
buf.putInt((int)columns[i].GetValue(obj));
break;
case Connection.CLIType.cli_int8:
buf.putLong((long)columns[i].GetValue(obj));
break;
case Connection.CLIType.cli_real4:
buf.putFloat((float)columns[i].GetValue(obj));
break;
case Connection.CLIType.cli_real8:
buf.putDouble((double)columns[i].GetValue(obj));
break;
case Connection.CLIType.cli_bool:
buf.putByte((bool)columns[i].GetValue(obj) ? 1 : 0);
break;
case Connection.CLIType.cli_oid:
Reference r = (Reference)columns[i].GetValue(obj);
buf.putInt(r != null ? r.oid : 0);
break;
case Connection.CLIType.cli_rectangle:
Rectangle rect = (Rectangle)columns[i].GetValue(obj);
if (rect == null)
{
rect = new Rectangle();
}
buf.putRectangle(rect);
break;
case Connection.CLIType.cli_asciiz:
buf.putString((string)columns[i].GetValue(obj));
break;
case Connection.CLIType.cli_datetime:
buf.putInt((int)(((DateTime)columns[i].GetValue(obj)).Ticks / 1000000));
break;
case Connection.CLIType.cli_array_of_int1:
buf.putByteArray((byte[])columns[i].GetValue(obj));
break;
case Connection.CLIType.cli_array_of_int2:
{
short[] arr = (short[])columns[i].GetValue(obj);
len = arr == null ? 0 : arr.Length;
buf.putInt(len);
for (j = 0; j < len; j++)
{
buf.putShort(arr[j]);
}
break;
}
case Connection.CLIType.cli_array_of_int4:
{
int[] arr = (int[])columns[i].GetValue(obj);
len = arr == null ? 0 : arr.Length;
buf.putInt(len);
for (j = 0; j < len; j++)
{
buf.putInt(arr[j]);
}
break;
}
case Connection.CLIType.cli_array_of_int8:
{
long[] arr = (long[])columns[i].GetValue(obj);
len = arr == null ? 0 : arr.Length;
buf.putInt(len);
for (j = 0; j < len; j++)
{
buf.putLong(arr[j]);
}
break;
}
case Connection.CLIType.cli_array_of_real4:
{
float[] arr = (float[])columns[i].GetValue(obj);
len = arr == null ? 0 : arr.Length;
buf.putInt(len);
for (j = 0; j < len; j++)
{
buf.putFloat(arr[j]);
}
break;
}
case Connection.CLIType.cli_array_of_real8:
{
double[] arr = (double[])columns[i].GetValue(obj);
len = arr == null ? 0 : arr.Length;
buf.putInt(len);
for (j = 0; j < len; j++)
{
buf.putDouble(arr[j]);
}
break;
}
case Connection.CLIType.cli_array_of_bool:
{
bool[] arr = (bool[])columns[i].GetValue(obj);
len = arr == null ? 0 : arr.Length;
buf.putInt(len);
for (j = 0; j < len; j++)
{
buf.putByte(arr[j] ? 1 : 0);
}
break;
}
case Connection.CLIType.cli_array_of_oid:
{
Reference[] arr = (Reference[])columns[i].GetValue(obj);
len = arr == null ? 0 : arr.Length;
buf.putInt(len);
for (j = 0; j < len; j++)
{
buf.putInt(arr[j] != null ? arr[j].oid : 0);
}
break;
}
case Connection.CLIType.cli_array_of_string:
{
string[] arr = (string[])columns[i].GetValue(obj);
len = arr == null ? 0 : arr.Length;
buf.putInt(len);
for (j = 0; j < len; j++)
{
buf.putAsciiz(arr[j]);
}
break;
}
case Connection.CLIType.cli_autoincrement:
break;
default:
throw new CliError("Unsupported type " + types[i]);
}
}
}
/// <summary>
/// Prepare (if needed) and execute select statement
/// Only object set returned by the select for updated statement allows
/// update and deletion of the objects.
/// </summary>
/// <param name="forUpdate">if cursor is opened in for update mode</param>
/// <returns>object set with the selected objects</returns>
///
public ObjectSet fetch(bool forUpdate)
{
int i, n;
ComBuffer buf;
if (!prepared)
{
buf = new ComBuffer(Connection.CLICommand.cli_cmd_prepare_and_execute, stmtId);
n = tableDesc.nColumns;
buf.putByte(nParams);
buf.putByte(n);
int len = stmtLen;
bool addNull = false;
if (len == 0 || stmt[len - 1] != 0)
{
addNull = true;
len += nParams;
buf.putShort(len + 1);
}
else
{
len += nParams;
buf.putShort(len);
}
i = 0;
Parameter p = parameters;
do
{
byte ch = stmt[i++];
buf.putByte(ch);
len -= 1;
if (ch == '\0')
{
if (len != 0)
{
if (p.type == Connection.CLIType.cli_undefined)
{
throw new CliError("Unbound parameter " + p.name);
}
buf.putByte((int)p.type);
p = p.next;
len -= 1;
}
}
} while (len != 0);
if (addNull)
{
buf.putByte('\0');
}
tableDesc.writeColumnDefs(buf);
}
else // statement was already prepared
{
buf = new ComBuffer(Connection.CLICommand.cli_cmd_execute, stmtId);
}
this.forUpdate = forUpdate;
buf.putByte(forUpdate ? 1 : 0);
for (Parameter p = parameters; p != null; p = p.next)
{
switch (p.type)
{
case Connection.CLIType.cli_oid:
case Connection.CLIType.cli_int4:
buf.putInt(p.ivalue);
break;
case Connection.CLIType.cli_int1:
case Connection.CLIType.cli_bool:
buf.putByte((byte)p.ivalue);
break;
case Connection.CLIType.cli_int2:
buf.putShort((short)p.ivalue);
break;
case Connection.CLIType.cli_int8:
buf.putLong(p.lvalue);
break;
case Connection.CLIType.cli_real4:
buf.putFloat(p.fvalue);
break;
case Connection.CLIType.cli_real8:
buf.putDouble(p.dvalue);
break;
case Connection.CLIType.cli_asciiz:
buf.putAsciiz(p.svalue);
break;
}
}
prepared = true;
return(new ObjectSet(this, con.sendReceive(buf)));
}
