//
// System.Data.ProviderBase.AbstractDbParameter
//
// Authors:
// Konstantin Triger <kostat@mainsoft.com>
// Boris Kirzner <borisk@mainsoft.com>
//
// (C) 2005 Mainsoft Corporation (http://www.mainsoft.com)
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Data;
using System.Data.Common;
using java.sql;
namespace System.Data.ProviderBase{
public abstract class AbstractDbParameter : DbParameter, IDbDataParameter, ICloneable
{
#region Fields
byte _precision;
byte _scale;
protected DataRowVersion _sourceVersion;
private int _jdbcType;
bool _isDbTypeSet;
bool _isJdbcTypeSet;
object _convertedValue;
string _parameterName;
ParameterDirection _direction = ParameterDirection.Input;
int _size;
object _value;
bool _isNullable;
int _offset;
string _sourceColumn;
DbParameterCollection _parent = null;
#endregion // Fields
#region Constructors
[MonoTODO]
protected AbstractDbParameter ()
{
}
#endregion // Constructors
#region Properties
public override ParameterDirection Direction {
get { return _direction; }
set {
if (_direction != value) {
switch (value) {
case ParameterDirection.Input:
case ParameterDirection.Output:
case ParameterDirection.InputOutput:
case ParameterDirection.ReturnValue:
{
_direction = value;
return;
}
}
throw ExceptionHelper.InvalidParameterDirection (value);
}
}
}
public override bool IsNullable {
get { return _isNullable; }
set { _isNullable = value; }
}
public virtual int Offset {
get { return _offset; }
set { _offset = value; }
}
public override string ParameterName {
get {
if (_parameterName == null)
return String.Empty;
return _parameterName;
}
set {
if (_parameterName != value) {
_parameterName = value;
}
}
}
public override int Size {
get { return _size; }
set {
if (_size != value) {
if (value < -1)
throw ExceptionHelper.InvalidSizeValue (value);
_size = value;
}
}
}
public override string SourceColumn {
get {
if (_sourceColumn == null)
return String.Empty;
return _sourceColumn;
}
set { _sourceColumn = value; }
}
internal DbParameterCollection Parent
{
get { return _parent; }
set { _parent = value; }
}
public byte Precision
{
get { return _precision; }
set { _precision = value; }
}
public byte Scale
{
get { return _scale; }
set { _scale = value; }
}
public override DataRowVersion SourceVersion
{
get { return _sourceVersion; }
set { _sourceVersion = value; }
}
protected internal int JdbcType
{
get {
if (!IsJdbcTypeSet) {
return JdbcTypeFromProviderType();
}
return _jdbcType;
}
set {
_jdbcType = value;
IsJdbcTypeSet = true;
}
}
protected internal bool IsJdbcTypeSet
{
get {
return _isJdbcTypeSet;
}
set {
_isJdbcTypeSet = value;
}
}
protected internal bool IsDbTypeSet
{
get { return _isDbTypeSet; }
set { _isDbTypeSet = value; }
}
protected internal virtual bool IsSpecial {
get {
return false;
}
}
private bool IsFixedLength
{
get {
return ((DbType != DbType.AnsiString) && (DbType != DbType.Binary) &&
(DbType != DbType.String) && (DbType != DbType.VarNumeric));
}
}
protected internal virtual string Placeholder {
get {
return "?";
}
}
internal object ConvertedValue
{
get {
if (_convertedValue == null) {
object value = Value;
_convertedValue = ((value != null) && (value != DBNull.Value)) ? ConvertValue(value) : value;
}
return _convertedValue;
}
}
public override object Value {
get { return _value; }
set {
_convertedValue = null;
_value = value;
}
}
//DbParameter overrides
public override bool SourceColumnNullMapping {
get {
throw new NotImplementedException();
}
set {
throw new NotImplementedException();
}
}
#endregion // Properties
#region Methods
public override String ToString()
{
return ParameterName;
}
protected internal abstract void SetParameterName(ResultSet res);
protected internal abstract void SetParameterDbType(ResultSet res);
protected internal abstract void SetSpecialFeatures(ResultSet res);
public virtual object Clone()
{
AbstractDbParameter other = (AbstractDbParameter) MemberwiseClone ();
other._parent = null;
return other;
}
protected internal abstract int JdbcTypeFromProviderType();
protected internal abstract object ConvertValue(object value);
internal void SetParameterPrecisionAndScale(ResultSet res)
{
int jdbcType = res.getInt("DATA_TYPE");
if(jdbcType == java.sql.Types.DECIMAL || jdbcType == java.sql.Types.NUMERIC) {
Precision = (byte)res.getInt("PRECISION");
Scale = (byte)res.getInt("SCALE");
}
}
internal void SetParameterSize(ResultSet res)
{
Size = res.getInt("LENGTH");
}
internal void SetParameterIsNullable(ResultSet res)
{
IsNullable = (res.getInt("NULLABLE") == 1);
}
internal void Validate()
{
if (!IsFixedLength && ((Direction & ParameterDirection.Output) != 0) && (Size == 0)) {
throw ExceptionHelper.ParameterSizeNotInitialized(Offset,ParameterName,DbType.ToString(),Size);
}
}
//DbParameter overrides
public override void ResetDbType() {
throw new NotImplementedException();
}
#endregion // Methods
}
}
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