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using System;
using System.Collections.Generic;
using System.Text;
using System.Data.Common;
#if ENTITIES6
using System.Data.Entity.Core.Common;
using System.Data.Entity.Core.Metadata.Edm;
#else
using System.Data.Metadata.Edm;
#endif
using System.Xml;
using System.Data;
namespace Npgsql
{
internal class NpgsqlProviderManifest : DbXmlEnabledProviderManifest
{
public NpgsqlProviderManifest(string serverVersion)
: base(CreateXmlReaderForResource("Npgsql.NpgsqlProviderManifest.Manifest.xml"))
{
}
protected override XmlReader GetDbInformation(string informationType)
{
XmlReader xmlReader = null;
if (informationType == StoreSchemaDefinition)
{
xmlReader = CreateXmlReaderForResource("Npgsql.NpgsqlSchema.ssdl");
}
#if NET45
else if (informationType == StoreSchemaDefinitionVersion3)
{
xmlReader = CreateXmlReaderForResource("Npgsql.NpgsqlSchemaV3.ssdl");
}
#endif
else if (informationType == StoreSchemaMapping)
{
xmlReader = CreateXmlReaderForResource("Npgsql.NpgsqlSchema.msl");
}
if (xmlReader == null)
throw new ArgumentOutOfRangeException("informationType");
return xmlReader;
}
private const string MaxLengthFacet = "MaxLength";
private const string ScaleFacet = "Scale";
private const string PrecisionFacet = "Precision";
private const string FixedLengthFacet = "FixedLength";
public override TypeUsage GetEdmType(TypeUsage storeType)
{
if (storeType == null)
throw new ArgumentNullException("storeType");
string storeTypeName = storeType.EdmType.Name;
PrimitiveType primitiveType = StoreTypeNameToEdmPrimitiveType[storeTypeName];
// TODO: come up with way to determin if unicode is used
bool isUnicode = true;
Facet facet;
switch (storeTypeName)
{
case "bool":
case "int2":
case "int4":
case "int8":
case "float4":
case "float8":
case "uuid":
return TypeUsage.CreateDefaultTypeUsage(primitiveType);
case "numeric":
{
byte scale;
byte precision;
if (storeType.Facets.TryGetValue(ScaleFacet, false, out facet) &&
!facet.IsUnbounded && facet.Value != null)
{
scale = (byte)facet.Value;
if (storeType.Facets.TryGetValue(PrecisionFacet, false, out facet) &&
!facet.IsUnbounded && facet.Value != null)
{
precision = (byte)facet.Value;
return TypeUsage.CreateDecimalTypeUsage(primitiveType, precision, scale);
}
}
return TypeUsage.CreateDecimalTypeUsage(primitiveType);
}
case "bpchar":
if (storeType.Facets.TryGetValue(MaxLengthFacet, false, out facet) &&
!facet.IsUnbounded && facet.Value != null)
return TypeUsage.CreateStringTypeUsage(primitiveType, isUnicode, true, (int)facet.Value);
else
return TypeUsage.CreateStringTypeUsage(primitiveType, isUnicode, true);
case "varchar":
if (storeType.Facets.TryGetValue(MaxLengthFacet, false, out facet) &&
!facet.IsUnbounded && facet.Value != null)
return TypeUsage.CreateStringTypeUsage(primitiveType, isUnicode, false, (int)facet.Value);
else
return TypeUsage.CreateStringTypeUsage(primitiveType, isUnicode, false);
case "text":
case "xml":
return TypeUsage.CreateStringTypeUsage(primitiveType, isUnicode, false);
case "timestamp":
// TODO: make sure the arguments are correct here
if (storeType.Facets.TryGetValue(PrecisionFacet, false, out facet) &&
!facet.IsUnbounded && facet.Value != null)
{
return TypeUsage.CreateDateTimeTypeUsage(primitiveType, (byte)facet.Value);
}
else
{
return TypeUsage.CreateDateTimeTypeUsage(primitiveType, null);
}
case "date":
return TypeUsage.CreateDateTimeTypeUsage(primitiveType, 0);
case "timestamptz":
if (storeType.Facets.TryGetValue(PrecisionFacet, false, out facet) &&
!facet.IsUnbounded && facet.Value != null)
{
return TypeUsage.CreateDateTimeOffsetTypeUsage(primitiveType, (byte)facet.Value);
}
else
{
return TypeUsage.CreateDateTimeOffsetTypeUsage(primitiveType, null);
}
case "time":
case "interval":
if (storeType.Facets.TryGetValue(PrecisionFacet, false, out facet) &&
!facet.IsUnbounded && facet.Value != null)
{
return TypeUsage.CreateTimeTypeUsage(primitiveType, (byte)facet.Value);
}
else
{
return TypeUsage.CreateTimeTypeUsage(primitiveType, null);
}
case "bytea":
{
if (storeType.Facets.TryGetValue(MaxLengthFacet, false, out facet) &&
!facet.IsUnbounded && facet.Value != null)
{
return TypeUsage.CreateBinaryTypeUsage(primitiveType, false, (int)facet.Value);
}
return TypeUsage.CreateBinaryTypeUsage(primitiveType, false);
}
case "rowversion":
{
return TypeUsage.CreateBinaryTypeUsage(primitiveType, true, 8);
}
//TypeUsage.CreateBinaryTypeUsage
//TypeUsage.CreateDateTimeTypeUsage
//TypeUsage.CreateDecimalTypeUsage
//TypeUsage.CreateStringTypeUsage
}
throw new NotSupportedException("Not supported store type: " + storeTypeName);
}
public override TypeUsage GetStoreType(TypeUsage edmType)
{
if (edmType == null)
throw new ArgumentNullException("edmType");
PrimitiveType primitiveType = edmType.EdmType as PrimitiveType;
if (primitiveType == null)
throw new ArgumentException("Store does not support specified edm type");
// TODO: come up with way to determin if unicode is used
bool isUnicode = true;
Facet facet;
switch (primitiveType.PrimitiveTypeKind)
{
case PrimitiveTypeKind.Boolean:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["bool"]);
case PrimitiveTypeKind.Int16:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["int2"]);
case PrimitiveTypeKind.Int32:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["int4"]);
case PrimitiveTypeKind.Int64:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["int8"]);
case PrimitiveTypeKind.Single:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["float4"]);
case PrimitiveTypeKind.Double:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["float8"]);
case PrimitiveTypeKind.Decimal:
{
byte scale;
byte precision;
if (edmType.Facets.TryGetValue(ScaleFacet, false, out facet) &&
!facet.IsUnbounded && facet.Value != null)
{
scale = (byte)facet.Value;
if (edmType.Facets.TryGetValue(PrecisionFacet, false, out facet) &&
!facet.IsUnbounded && facet.Value != null)
{
precision = (byte)facet.Value;
return TypeUsage.CreateDecimalTypeUsage(StoreTypeNameToStorePrimitiveType["numeric"], precision, scale);
}
}
return TypeUsage.CreateDecimalTypeUsage(StoreTypeNameToStorePrimitiveType["numeric"]);
}
case PrimitiveTypeKind.String:
{
// TODO: could get character, character varying, text
if (edmType.Facets.TryGetValue(FixedLengthFacet, false, out facet) &&
!facet.IsUnbounded && facet.Value != null)
{
PrimitiveType characterPrimitive = StoreTypeNameToStorePrimitiveType["bpchar"];
if (edmType.Facets.TryGetValue(MaxLengthFacet, false, out facet) &&
!facet.IsUnbounded && facet.Value != null)
{
return TypeUsage.CreateStringTypeUsage(characterPrimitive, isUnicode, true, (int)facet.Value);
}
// this may not work well
return TypeUsage.CreateStringTypeUsage(characterPrimitive, isUnicode, true);
}
if (edmType.Facets.TryGetValue(MaxLengthFacet, false, out facet) &&
!facet.IsUnbounded && facet.Value != null)
{
return TypeUsage.CreateStringTypeUsage(StoreTypeNameToStorePrimitiveType["varchar"], isUnicode, false, (int)facet.Value);
}
// assume text since it is not fixed length and has no max length
return TypeUsage.CreateStringTypeUsage(StoreTypeNameToStorePrimitiveType["text"], isUnicode, false);
}
case PrimitiveTypeKind.DateTime:
if (edmType.Facets.TryGetValue(PrecisionFacet, false, out facet) &&
!facet.IsUnbounded && facet.Value != null)
{
return TypeUsage.CreateDateTimeTypeUsage(StoreTypeNameToStorePrimitiveType["timestamp"], (byte)facet.Value);
}
else
{
return TypeUsage.CreateDateTimeTypeUsage(StoreTypeNameToStorePrimitiveType["timestamp"], null);
}
case PrimitiveTypeKind.DateTimeOffset:
if (edmType.Facets.TryGetValue(PrecisionFacet, false, out facet) &&
!facet.IsUnbounded && facet.Value != null)
{
return TypeUsage.CreateDateTimeOffsetTypeUsage(StoreTypeNameToStorePrimitiveType["timestamptz"], (byte)facet.Value);
}
else
{
return TypeUsage.CreateDateTimeOffsetTypeUsage(StoreTypeNameToStorePrimitiveType["timestamptz"], null);
}
case PrimitiveTypeKind.Time:
if (edmType.Facets.TryGetValue(PrecisionFacet, false, out facet) &&
!facet.IsUnbounded && facet.Value != null)
{
return TypeUsage.CreateTimeTypeUsage(StoreTypeNameToStorePrimitiveType["interval"], (byte)facet.Value);
}
else
{
return TypeUsage.CreateTimeTypeUsage(StoreTypeNameToStorePrimitiveType["interval"], null);
}
case PrimitiveTypeKind.Binary:
{
if (edmType.Facets.TryGetValue(MaxLengthFacet, false, out facet) &&
!facet.IsUnbounded && facet.Value != null)
{
return TypeUsage.CreateBinaryTypeUsage(StoreTypeNameToStorePrimitiveType["bytea"], false, (int)facet.Value);
}
return TypeUsage.CreateBinaryTypeUsage(StoreTypeNameToStorePrimitiveType["bytea"], false);
}
case PrimitiveTypeKind.Guid:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["uuid"]);
case PrimitiveTypeKind.Byte:
case PrimitiveTypeKind.SByte:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["int2"]);
}
throw new NotSupportedException("Not supported edm type: " + edmType);
}
private static XmlReader CreateXmlReaderForResource(string resourceName)
{
return XmlReader.Create(System.Reflection.Assembly.GetAssembly(typeof(NpgsqlProviderManifest)).GetManifestResourceStream(resourceName));
}
public override bool SupportsEscapingLikeArgument(out char escapeCharacter)
{
escapeCharacter = '\\';
return true;
}
public override string EscapeLikeArgument(string argument)
{
return argument.Replace("\\","\\\\").Replace("%", "\\%").Replace("_", "\\_");
}
#if ENTITIES6
public override bool SupportsInExpression()
{
return true;
}
#endif
}
}