public void PropertyValuesEqual_checks_value_equality_for_value_types_and_reference_equality_for_reference_types()
{
Equality_tests(DbHelpers.PropertyValuesEqual);
Assert.False(DbHelpers.PropertyValuesEqual(new ExecutionStrategyKey("foo", "bar"), new ExecutionStrategyKey("foo", "bar")));
}
// <summary>
// Creates the underlying <see cref="DbConnection" /> (which may actually be an <see cref="EntityConnection" />)
// if it does not already exist.
// </summary>
private void Initialize()
{
if (UnderlyingConnection == null)
{
Debug.Assert(AppConfig != null);
string name;
if (_connectionInfo != null)
{
var connection = _connectionInfo.GetConnectionString(AppConfig);
InitializeFromConnectionStringSetting(connection);
_connectionStringOrigin = DbConnectionStringOrigin.DbContextInfo;
_connectionStringName = connection.Name;
}
// If the name or connection string is a simple name or is in the form "name=xyz" then use
// that name to try to load from the app/web config file.
else if (!DbHelpers.TryGetConnectionName(_nameOrConnectionString, out name) ||
!TryInitializeFromAppConfig(name, AppConfig))
{
// If the connection string is of the form name=, but the name was not found in the config file
// then always throw since we always interpret name= to mean find in the config file only.
if (name != null &&
DbHelpers.TreatAsConnectionString(_nameOrConnectionString))
{
throw Error.DbContext_ConnectionStringNotFound(name);
}
// If the name or connection string is a full EF connection string, then create an EntityConnection from it.
if (DbHelpers.IsFullEFConnectionString(_nameOrConnectionString))
{
UnderlyingConnection = new EntityConnection(_nameOrConnectionString);
}
else
{
if (base.ProviderName != null)
{
CreateConnectionFromProviderName(base.ProviderName);
}
else
{
// Otherwise figure out the connection factory to use (either the default,
// the one set in code, or one provided by DbContextInfo via the AppSettings property
UnderlyingConnection = DbConfiguration.DependencyResolver.GetService <IDbConnectionFactory>()
.CreateConnection(name ?? _nameOrConnectionString);
if (UnderlyingConnection == null)
{
throw Error.DbContext_ConnectionFactoryReturnedNullConnection();
}
}
}
if (name != null)
{
_connectionStringOrigin = DbConnectionStringOrigin.Convention;
_connectionStringName = name;
}
else
{
_connectionStringOrigin = DbConnectionStringOrigin.UserCode;
}
}
OnConnectionInitialized();
}
Debug.Assert(UnderlyingConnection != null, "Connection should have been initialized by some mechanism.");
}
public void KeyValuesEqual_checks_value_equality_for_value_types_and_Equals_implementation_for_reference_types()
{
Equality_tests(DbHelpers.KeyValuesEqual);
Assert.True(DbHelpers.KeyValuesEqual(new ExecutionStrategyKey("foo", "bar"), new ExecutionStrategyKey("foo", "bar")));
}
// <summary>
// Validates that the given name is a property of the declaring type (either on the CLR type or in the EDM)
// and that it is a complex or scalar property rather than a nav property and then returns metadata about
// the property.
// </summary>
// <param name="internalContext"> The internal context. </param>
// <param name="declaringType"> The type that the property is declared on. </param>
// <param name="requestedType"> The type of property requested, which may be 'object' if any type can be accepted. </param>
// <param name="propertyName"> Name of the property. </param>
// <returns> Metadata about the property, or null if the property does not exist or is a navigation property. </returns>
public static PropertyEntryMetadata ValidateNameAndGetMetadata(
InternalContext internalContext, Type declaringType, Type requestedType, string propertyName)
{
DebugCheck.NotNull(internalContext);
DebugCheck.NotNull(declaringType);
DebugCheck.NotNull(requestedType);
DebugCheck.NotEmpty(propertyName);
Type propertyType;
DbHelpers.GetPropertyTypes(declaringType).TryGetValue(propertyName, out propertyType);
var metadataWorkspace = internalContext.ObjectContext.MetadataWorkspace;
var edmType = metadataWorkspace.GetItem <StructuralType>(declaringType.FullNameWithNesting(), DataSpace.OSpace);
var isMapped = false;
var isComplex = false;
EdmMember member;
edmType.Members.TryGetValue(propertyName, false, out member);
if (member != null)
{
// If the property is in the model, then it must be a scalar or complex property, not a nav prop
var edmProperty = member as EdmProperty;
if (edmProperty == null)
{
return(null);
}
if (propertyType == null)
{
var asPrimitive = edmProperty.TypeUsage.EdmType as PrimitiveType;
if (asPrimitive != null)
{
propertyType = asPrimitive.ClrEquivalentType;
}
else
{
Debug.Assert(
edmProperty.TypeUsage.EdmType is StructuralType, "Expected a structural type if property type is not primitive.");
var objectItemCollection =
(ObjectItemCollection)metadataWorkspace.GetItemCollection(DataSpace.OSpace);
propertyType = objectItemCollection.GetClrType((StructuralType)edmProperty.TypeUsage.EdmType);
}
}
isMapped = true;
isComplex = edmProperty.TypeUsage.EdmType.BuiltInTypeKind == BuiltInTypeKind.ComplexType;
}
else
{
// If the prop is not in the model, then it must have a getter or a setter
var propertyGetters = DbHelpers.GetPropertyGetters(declaringType);
var propertySetters = DbHelpers.GetPropertySetters(declaringType);
if (!(propertyGetters.ContainsKey(propertyName) || propertySetters.ContainsKey(propertyName)))
{
return(null);
}
Debug.Assert(propertyType != null, "If the property has a getter or setter, then it must exist and have a type.");
}
if (!requestedType.IsAssignableFrom(propertyType))
{
throw Error.DbEntityEntry_WrongGenericForProp(
propertyName, declaringType.Name, requestedType.Name, propertyType.Name);
}
return(new PropertyEntryMetadata(declaringType, propertyType, propertyName, isMapped, isComplex));
}
public static string GetPropertyPath(InternalMemberEntry property)
{
return(string.Join(".", DbHelpers.GetPropertyPathSegments(property).Reverse <string>()));
}
public static bool TryParsePath(Expression expression, out string path)
{
path = (string)null;
Expression expression1 = expression.RemoveConvert();
MemberExpression memberExpression = expression1 as MemberExpression;
MethodCallExpression methodCallExpression = expression1 as MethodCallExpression;
if (memberExpression != null)
{
string name = memberExpression.Member.Name;
string path1;
if (!DbHelpers.TryParsePath(memberExpression.Expression, out path1))
{
return(false);
}
path = path1 == null ? name : path1 + "." + name;
}
else if (methodCallExpression != null)
{
string path1;
if (methodCallExpression.Method.Name == "Select" && methodCallExpression.Arguments.Count == 2 && (DbHelpers.TryParsePath(methodCallExpression.Arguments[0], out path1) && path1 != null))
{
LambdaExpression lambdaExpression = methodCallExpression.Arguments[1] as LambdaExpression;
string path2;
if (lambdaExpression != null && DbHelpers.TryParsePath(lambdaExpression.Body, out path2) && path2 != null)
{
path = path1 + "." + path2;
return(true);
}
}
return(false);
}
return(true);
}
private ObjectQuery <DbDataRecord> GetDatabaseValuesQuery()
{
StringBuilder queryBuilder = new StringBuilder();
queryBuilder.Append("SELECT ");
this.AppendEntitySqlRow(queryBuilder, "X", this.OriginalValues);
string str1 = string.Format((IFormatProvider)CultureInfo.InvariantCulture, "{0}.{1}", (object)DbHelpers.QuoteIdentifier(this._stateEntry.EntitySet.EntityContainer.Name), (object)DbHelpers.QuoteIdentifier(this._stateEntry.EntitySet.Name));
string str2 = string.Format((IFormatProvider)CultureInfo.InvariantCulture, "{0}.{1}", (object)DbHelpers.QuoteIdentifier(this.EntityType.NestingNamespace()), (object)DbHelpers.QuoteIdentifier(this.EntityType.Name));
queryBuilder.AppendFormat((IFormatProvider)CultureInfo.InvariantCulture, " FROM (SELECT VALUE TREAT (Y AS {0}) FROM {1} AS Y) AS X WHERE ", (object)str2, (object)str1);
EntityKeyMember[] entityKeyValues = this._stateEntry.EntityKey.EntityKeyValues;
ObjectParameter[] objectParameterArray = new ObjectParameter[entityKeyValues.Length];
for (int index = 0; index < entityKeyValues.Length; ++index)
{
if (index > 0)
{
queryBuilder.Append(" AND ");
}
string name = string.Format((IFormatProvider)CultureInfo.InvariantCulture, "p{0}", (object)index.ToString((IFormatProvider)CultureInfo.InvariantCulture));
queryBuilder.AppendFormat((IFormatProvider)CultureInfo.InvariantCulture, "X.{0} = @{1}", (object)DbHelpers.QuoteIdentifier(entityKeyValues[index].Key), (object)name);
objectParameterArray[index] = new ObjectParameter(name, entityKeyValues[index].Value);
}
return(this._internalContext.ObjectContext.CreateQuery <DbDataRecord>(queryBuilder.ToString(), objectParameterArray));
}
