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// Copyright (C) 2008-2009 Sun Microsystems, Inc.
//
// MySQL Connector/NET is licensed under the terms of the GPLv2
// <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most
// MySQL Connectors. There are special exceptions to the terms and
// conditions of the GPLv2 as it is applied to this software, see the
// FLOSS License Exception
// <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published
// by the Free Software Foundation; version 2 of the License.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
using System;
using System.IO;
using System.Reflection;
using System.Data;
using System.Xml;
using System.Data.Common;
using System.Data.Metadata.Edm;
using System.Diagnostics;
using MySql.Data.Entity.Properties;
namespace MySql.Data.MySqlClient
{
internal class MySqlProviderManifest : DbXmlEnabledProviderManifest
{
string manifestToken;
public MySqlProviderManifest(string version)
: base(GetManifest())
{
manifestToken = version;
}
private static XmlReader GetManifest()
{
return GetXmlResource("MySql.Data.Entity.Properties.ProviderManifest.xml");
}
protected override XmlReader GetDbInformation(string informationType)
{
if (informationType == DbProviderManifest.StoreSchemaDefinition)
{
return GetStoreSchemaDescription();
}
if (informationType == DbProviderManifest.StoreSchemaMapping)
{
return GetStoreSchemaMapping();
}
throw new ProviderIncompatibleException(String.Format("The provider returned null for the informationType '{0}'.", informationType));
}
private XmlReader GetStoreSchemaMapping()
{
return GetMappingResource("SchemaMapping.msl");
}
private XmlReader GetStoreSchemaDescription()
{
double version = double.Parse(manifestToken);
if (version < 5.0) throw new NotSupportedException("Your version of MySQL is not currently supported");
if (version < 5.1) return GetMappingResource("SchemaDefinition-5.0.ssdl");
if (version < 5.5) return GetMappingResource("SchemaDefinition-5.1.ssdl");
return GetMappingResource("SchemaDefinition-5.5.ssdl");
}
public override TypeUsage GetEdmType(TypeUsage storeType)
{
if (storeType == null)
{
throw new ArgumentNullException("storeType");
}
string storeTypeName = storeType.EdmType.Name.ToLowerInvariant();
if (!base.StoreTypeNameToEdmPrimitiveType.ContainsKey(storeTypeName))
{
throw new ArgumentException(String.Format("The underlying provider does not support the type '{0}'.", storeTypeName));
}
PrimitiveType edmPrimitiveType = base.StoreTypeNameToEdmPrimitiveType[storeTypeName];
return TypeUsage.CreateDefaultTypeUsage(edmPrimitiveType);
}
private const int CHAR_MAXLEN = 255;
private const int VARCHAR_MAXLEN = 65535;
private const int MEDIUMTEXT_MAXLEN = 16777215;
private const int LONGTEXT_MAXLEN = 1073741823;
private const int BINARY_MAXLEN = 255;
private const int VARBINARY_MAXLEN = 65535;
private const int MEDIUMBLOB_MAXLEN = 16777215;
private const int LONGBLOB_MAXLEN = 2147483647;
public override TypeUsage GetStoreType(TypeUsage edmType)
{
if (edmType == null)
throw new ArgumentNullException("edmType");
Debug.Assert(edmType.EdmType.BuiltInTypeKind == BuiltInTypeKind.PrimitiveType);
PrimitiveType primitiveType = edmType.EdmType as PrimitiveType;
if (primitiveType == null)
throw new ArgumentException(String.Format(Resources.TypeNotSupported, edmType));
ReadOnlyMetadataCollection<Facet> facets = edmType.Facets;
switch (primitiveType.PrimitiveTypeKind)
{
case PrimitiveTypeKind.Boolean:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["bool"]);
case PrimitiveTypeKind.Byte:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["tinyint"]);
case PrimitiveTypeKind.Int16:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["smallint"]);
case PrimitiveTypeKind.Int32:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["int"]);
case PrimitiveTypeKind.Int64:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["bigint"]);
case PrimitiveTypeKind.Guid:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["guid"]);
case PrimitiveTypeKind.Double:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["double"]);
case PrimitiveTypeKind.Single:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["float"]);
case PrimitiveTypeKind.Decimal:
{
byte precision = 10;
byte scale = 0;
Facet facet;
if (edmType.Facets.TryGetValue("Precision", false, out facet))
{
if (!facet.IsUnbounded && facet.Value != null)
precision = (byte)facet.Value;
}
if (edmType.Facets.TryGetValue("Scale", false, out facet))
{
if (!facet.IsUnbounded && facet.Value != null)
scale = (byte)facet.Value;
}
return TypeUsage.CreateDecimalTypeUsage(StoreTypeNameToStorePrimitiveType["decimal"], precision, scale);
}
case PrimitiveTypeKind.Binary:
{
bool isFixedLength = null != facets["FixedLength"].Value && (bool)facets["FixedLength"].Value;
Facet f = facets["MaxLength"];
bool isMaxLength = f.IsUnbounded || null == f.Value || (int)f.Value > MEDIUMBLOB_MAXLEN;
int maxLength = !isMaxLength ? (int)f.Value : LONGBLOB_MAXLEN;
string typeName = String.Empty;
if (isFixedLength)
{
if (maxLength < CHAR_MAXLEN) typeName = "tinyblob";
else if (maxLength < MEDIUMBLOB_MAXLEN) typeName = "blob";
else if (maxLength < LONGTEXT_MAXLEN) typeName = "mediumblob";
else typeName = "longblob";
}
else
{
typeName = isMaxLength || maxLength > BINARY_MAXLEN ? "varbinary" : "binary";
maxLength = isMaxLength ? VARBINARY_MAXLEN : maxLength;
}
return TypeUsage.CreateBinaryTypeUsage(StoreTypeNameToStorePrimitiveType[typeName], isFixedLength, maxLength);
}
case PrimitiveTypeKind.String:
{
bool isUnicode = null == facets["Unicode"].Value || (bool)facets["Unicode"].Value;
bool isFixedLength = null != facets["FixedLength"].Value && (bool)facets["FixedLength"].Value;
Facet f = facets["MaxLength"];
// maxlen is true if facet value is unbounded, the value is bigger than the limited string sizes *or* the facet
// value is null. this is needed since functions still have maxlength facet value as null
bool isMaxLength = f.IsUnbounded || null == f.Value || (int)f.Value > MEDIUMTEXT_MAXLEN;
int maxLength = !isMaxLength ? (int)f.Value : LONGTEXT_MAXLEN;
string typeName = String.Empty;
if (isFixedLength)
{
if (maxLength < CHAR_MAXLEN) typeName = "char";
else if (maxLength < LONGTEXT_MAXLEN) typeName = "mediumtext";
else typeName = "longtext";
}
else
{
typeName = isMaxLength || maxLength > CHAR_MAXLEN ? "varchar" : "char";
maxLength = isMaxLength ? VARCHAR_MAXLEN : maxLength;
}
if (typeName.EndsWith("char") && isUnicode)
typeName = "n" + typeName;
return TypeUsage.CreateStringTypeUsage(StoreTypeNameToStorePrimitiveType[typeName], isUnicode, isFixedLength, maxLength);
}
case PrimitiveTypeKind.DateTimeOffset:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["timestamp"]);
case PrimitiveTypeKind.DateTime:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["datetime"]);
case PrimitiveTypeKind.Time:
return TypeUsage.CreateDefaultTypeUsage(StoreTypeNameToStorePrimitiveType["time"]);
default:
throw new NotSupportedException(String.Format(Resources.NoStoreTypeForEdmType, edmType, primitiveType.PrimitiveTypeKind));
}
}
private static XmlReader GetXmlResource(string resourceName)
{
Assembly executingAssembly = Assembly.GetExecutingAssembly();
Stream stream = executingAssembly.GetManifestResourceStream(resourceName);
return XmlReader.Create(stream);
}
private static XmlReader GetMappingResource(string resourceBaseName)
{
string rez = GetResourceAsString(
String.Format("MySql.Data.Entity.Properties.{0}", resourceBaseName));
StringReader sr = new StringReader(rez);
return XmlReader.Create(sr);
}
private static string GetResourceAsString(string resourceName)
{
Assembly executingAssembly = Assembly.GetExecutingAssembly();
Stream s = executingAssembly.GetManifestResourceStream(resourceName);
StreamReader sr = new StreamReader(s);
string resourceAsString = sr.ReadToEnd();
sr.Close();
s.Close();
return resourceAsString;
}
}
}
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