internal SqlMember Member(SqlExpression expr, MemberInfo member)
{
Type clrType = TypeSystem.GetMemberType(member);
MetaType metaType = this.model.GetMetaType(member.DeclaringType);
MetaDataMember metaDataMember = metaType.GetDataMember(member);
if (metaType != null && metaDataMember != null)
{
return(new SqlMember(clrType, this.Default(metaDataMember), expr, member));
}
return(new SqlMember(clrType, this.Default(clrType), expr, member));
}
private static bool GetKeyFromPredicate(MetaType type, Dictionary <MetaDataMember, object> keys, Expression mex, Expression vex)
{
MemberExpression memex = mex as MemberExpression;
if (memex == null || memex.Expression == null ||
memex.Expression.NodeType != ExpressionType.Parameter || memex.Expression.Type != type.Type)
{
return(false);
}
if (!type.Type.IsAssignableFrom(memex.Member.ReflectedType) && !memex.Member.ReflectedType.IsAssignableFrom(type.Type))
{
return(false);
}
MetaDataMember mm = type.GetDataMember(memex.Member);
if (!mm.IsPrimaryKey)
{
return(false);
}
if (keys.ContainsKey(mm))
{
return(false);
}
ConstantExpression cex = vex as ConstantExpression;
if (cex != null)
{
keys.Add(mm, cex.Value);
return(true);
}
InvocationExpression ie = vex as InvocationExpression;
if (ie != null && ie.Arguments != null && ie.Arguments.Count == 0)
{
ConstantExpression ce = ie.Expression as ConstantExpression;
if (ce != null)
{
keys.Add(mm, ((Delegate)ce.Value).DynamicInvoke(new object[] {}));
return(true);
}
}
return(false);
}
private static bool GetKeyFromPredicate(MetaType type, Dictionary <MetaDataMember, object> keys, Expression mex, Expression vex)
{
var memberExpression = mex as MemberExpression;
if (memberExpression == null || memberExpression.Expression == null || memberExpression.Expression.NodeType != ExpressionType.Parameter || memberExpression.Expression.Type != type.Type)
{
return(false);
}
if (!type.Type.IsAssignableFrom(memberExpression.Member.ReflectedType) && !memberExpression.Member.ReflectedType.IsAssignableFrom(type.Type))
{
return(false);
}
var dataMember = type.GetDataMember(memberExpression.Member);
if (!dataMember.IsPrimaryKey)
{
return(false);
}
if (keys.ContainsKey(dataMember))
{
return(false);
}
var constantExpression = vex as ConstantExpression;
if (constantExpression != null)
{
keys.Add(dataMember, constantExpression.Value);
return(true);
}
var invocationExpression = vex as InvocationExpression;
if (invocationExpression != null && invocationExpression.Arguments != null && invocationExpression.Arguments.Count == 0)
{
var constantExpression2 = invocationExpression.Expression as ConstantExpression;
if (constantExpression2 != null)
{
keys.Add(dataMember, ((Delegate)constantExpression2.Value).DynamicInvoke());
return(true);
}
}
return(false);
}
private static MetaDataMember GetDataMember(MetaType dataType, MemberInfo member)
{
MetaDataMember dataMember;
try
{
dataMember = dataType.GetDataMember(member);
}
catch (InvalidOperationException)
{
throw new UnmappedItemException("Cannot resolve member: " + member.DeclaringType.FullName + "." + member.Name + " is not a mapped member");
}
if (dataMember == null)
{
throw new UnmappedItemException("Cannot resolve member: " + member.DeclaringType.FullName + "." + member.Name + " is not a mapped member");
}
return(dataMember);
}
private static bool GetKeyFromPredicate(MetaType type, IDictionary <MetaDataMember, object> keys, Expression mex, Expression vex)
{
var expression = mex as MemberExpression;
if ((((expression != null) && (expression.Expression != null)) && ((expression.Expression.NodeType == ExpressionType.Parameter) && (expression.Expression.Type == type.Type))) && (type.Type.IsAssignableFrom(expression.Member.ReflectedType) || expression.Member.ReflectedType.IsAssignableFrom(type.Type)))
{
MetaDataMember dataMember = type.GetDataMember(expression.Member);
if (!dataMember.IsPrimaryKey)
{
return(false);
}
if (keys.ContainsKey(dataMember))
{
return(false);
}
var expression2 = vex as ConstantExpression;
if (expression2 != null)
{
keys.Add(dataMember, expression2.Value);
return(true);
}
}
return(false);
}
public override MetaDataMember GetDataMember(System.Reflection.MemberInfo member)
{
return(_orgtype.GetDataMember(member));
}
