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added ConverterContext to marr Converters.

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This commit is contained in:
kay.one
2013-09-20 23:38:27 -07:00
committed by kayone
parent d1a4c7c942
commit 08e2d60f20
15 changed files with 153 additions and 34 deletions
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13
Marr.Data/Converters/BooleanIntConverter.cs
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@@ -20,14 +20,14 @@ namespace Marr.Data.Converters
{
public class BooleanIntConverter : IConverter
{
public object FromDB(ColumnMap map, object dbValue)
public object FromDB(ConverterContext context)
{
if (dbValue == DBNull.Value)
if (context.DbValue == DBNull.Value)
{
return DBNull.Value;
}
int val = (int)dbValue;
int val = (int)context.DbValue;
if (val == 1)
{
@@ -40,7 +40,12 @@ namespace Marr.Data.Converters
throw new ConversionException(
string.Format(
"The BooleanCharConverter could not convert the value '{0}' to a boolean.",
dbValue));
context.DbValue));
}
public object FromDB(ColumnMap map, object dbValue)
{
return FromDB(new ConverterContext { ColumnMap = map, DbValue = dbValue });
}
public object ToDB(object clrValue)

13
Marr.Data/Converters/BooleanYNConverter.cs
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@@ -20,14 +20,14 @@ namespace Marr.Data.Converters
{
public class BooleanYNConverter : IConverter
{
public object FromDB(ColumnMap map, object dbValue)
public object FromDB(ConverterContext context)
{
if (dbValue == DBNull.Value)
if (context.DbValue == DBNull.Value)
{
return DBNull.Value;
}
string val = dbValue.ToString();
string val = context.DbValue.ToString();
if (val == "Y")
{
@@ -40,7 +40,12 @@ namespace Marr.Data.Converters
throw new ConversionException(
string.Format(
"The BooleanYNConverter could not convert the value '{0}' to a boolean.",
dbValue));
context.DbValue));
}
public object FromDB(ColumnMap map, object dbValue)
{
return FromDB(new ConverterContext {ColumnMap = map, DbValue = dbValue});
}
public object ToDB(object clrValue)

9
Marr.Data/Converters/CastConverter.cs
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@@ -30,10 +30,15 @@ namespace Marr.Data.Converters
get { return typeof(TDb); }
}
public object FromDB(ConverterContext context)
{
TDb val = (TDb)context.DbValue;
return val.ToType(typeof(TClr), CultureInfo.InvariantCulture);
}
public object FromDB(ColumnMap map, object dbValue)
{
TDb val = (TDb)dbValue;
return val.ToType(typeof(TClr), CultureInfo.InvariantCulture);
return FromDB(new ConverterContext { ColumnMap = map, DbValue = dbValue });
}
public object ToDB(object clrValue)

13
Marr.Data/Converters/ConverterContext.cs Normal file
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@@ -0,0 +1,13 @@
using System.Data;
using Marr.Data.Mapping;
namespace Marr.Data.Converters
{
public class ConverterContext
{
public ColumnMap ColumnMap { get; set; }
public object DbValue { get; set; }
public ColumnMapCollection MapCollection { get; set; }
public IDataRecord DataRecord { get; set; }
}
}

11
Marr.Data/Converters/EnumIntConverter.cs
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@@ -20,11 +20,16 @@ namespace Marr.Data.Converters
{
public class EnumIntConverter : IConverter
{
public object FromDB(ConverterContext context)
{
if (context.DbValue == null || context.DbValue == DBNull.Value)
return null;
return Enum.ToObject(context.ColumnMap.FieldType, (int)context.DbValue);
}
public object FromDB(ColumnMap map, object dbValue)
{
if (dbValue == null || dbValue == DBNull.Value)
return null;
return Enum.ToObject(map.FieldType, (int)dbValue);
return FromDB(new ConverterContext { ColumnMap = map, DbValue = dbValue });
}
public object ToDB(object clrValue)

11
Marr.Data/Converters/EnumStringConverter.cs
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@@ -20,11 +20,16 @@ namespace Marr.Data.Converters
{
public class EnumStringConverter : IConverter
{
public object FromDB(ConverterContext context)
{
if (context.DbValue == null || context.DbValue == DBNull.Value)
return null;
return Enum.Parse(context.ColumnMap.FieldType, (string)context.DbValue);
}
public object FromDB(ColumnMap map, object dbValue)
{
if (dbValue == null || dbValue == DBNull.Value)
return null;
return Enum.Parse(map.FieldType, (string)dbValue);
return FromDB(new ConverterContext { ColumnMap = map, DbValue = dbValue });
}
public object ToDB(object clrValue)

3
Marr.Data/Converters/IConverter.cs
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@@ -20,6 +20,9 @@ namespace Marr.Data.Converters
{
public interface IConverter
{
object FromDB(ConverterContext context);
[Obsolete("use FromDB(ConverterContext context) instead")]
object FromDB(ColumnMap map, object dbValue);
object ToDB(object clrValue);
Type DbType { get; }

11
Marr.Data/Mapping/MappingHelper.cs
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@@ -2,6 +2,7 @@
using System.Collections.Generic;
using System.Linq;
using System.Data.Common;
using Marr.Data.Converters;
namespace Marr.Data.Mapping
{
@@ -53,7 +54,15 @@ namespace Marr.Data.Mapping
// Handle conversions
if (dataMap.Converter != null)
{
dbValue = dataMap.Converter.FromDB(dataMap, dbValue);
var convertContext = new ConverterContext
{
DbValue = dbValue,
ColumnMap = dataMap,
MapCollection = mappings,
DataRecord = reader
};
dbValue = dataMap.Converter.FromDB(convertContext);
}
if (dbValue != DBNull.Value && dbValue != null)

1
Marr.Data/Marr.Data.csproj
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@@ -52,6 +52,7 @@
<Compile Include="Converters\BooleanYNConverter.cs" />
<Compile Include="Converters\CastConverter.cs" />
<Compile Include="Converters\ConversionException.cs" />
<Compile Include="Converters\ConverterContext.cs" />
<Compile Include="Converters\EnumIntConverter.cs" />
<Compile Include="Converters\EnumStringConverter.cs" />
<Compile Include="Converters\IConverter.cs" />