public override object GetValue(int index)
{
SqoColumn col = columns[index];
if (col.SourceType == innerType)
{
if (col.IsFullObject)
{
return(siaqodb.LoadObjectByOID(col.SourceType, oids[currentIndex].Value));
}
else
{
return(siaqodb.LoadValue(oids[currentIndex].Value, col.SourcePropName, col.SourceType));
}
}
else
{
if (col.IsFullObject)
{
return(siaqodb.LoadObjectByOID(col.SourceType, oids[currentIndex].Key));
}
else
{
return(siaqodb.LoadValue(oids[currentIndex].Key, col.SourcePropName, col.SourceType));
}
}
}
protected override Expression VisitParameter(ParameterExpression p)
{
SqoColumn col = new SqoColumn();
col.SourcePropName = p.Name;
col.SourceType = p.Type;
col.IsFullObject = true;
this.columns.Add(col);
return(Expression.Convert(Expression.Call(this.row, miGetValue, Expression.Constant(iColumn++)), p.Type));
}
public async Task <object> GetValueAsync(int index)
{
SqoColumn col = columns[index];
if (col.IsFullObject)
{
return(await siaqodb.LoadObjectByOIDAsync(col.SourceType, oids[currentIndex]));
}
else
{
return(await siaqodb.LoadValueAsync(oids[currentIndex], col.SourcePropName, col.SourceType));
}
}
protected override Expression VisitMemberAccess(MemberExpression m)
{
if (m.Expression != null && m.Expression.NodeType == ExpressionType.Parameter)
{
#if WinRT
if (m.Member.GetMemberType() == MemberTypes.Property)
#else
if (m.Member.MemberType == System.Reflection.MemberTypes.Property)
#endif
{
if (m.Member.Name == "OID")
{
SqoColumn col = new SqoColumn();
col.SourcePropName = m.Member.Name;
col.SourceType = m.Expression.Type;
this.columns.Add(col);
return(Expression.Convert(Expression.Call(this.row, miGetValue, Expression.Constant(iColumn++)), m.Type));
}
else
{
System.Reflection.PropertyInfo pi = m.Member as System.Reflection.PropertyInfo;
#if SILVERLIGHT || CF || UNITY3D || WinRT || MONODROID
string fieldName = SilverlightPropertyResolver.GetPrivateFieldName(pi, pi.DeclaringType);
if (fieldName != null)
{
SqoColumn col = new SqoColumn();
col.SourcePropName = fieldName;
col.SourceType = m.Expression.Type;
this.columns.Add(col);
return(Expression.Convert(Expression.Call(this.row, miGetValue, Expression.Constant(iColumn++)), m.Type));
}
else
{
string fld = MetaHelper.GetBackingFieldByAttribute(m.Member);
if (fld != null)
{
SqoColumn col = new SqoColumn();
col.SourcePropName = fld;
col.SourceType = m.Expression.Type;
this.columns.Add(col);
return(Expression.Convert(Expression.Call(this.row, miGetValue, Expression.Constant(iColumn++)), m.Type));
}
else
{
throw new SiaqodbException("A Property must have UseVariable Attribute set");
}
}
#else
try
{
System.Reflection.FieldInfo fi = BackingFieldResolver.GetBackingField(pi);
if (fi != null)
{
SqoColumn col = new SqoColumn();
col.SourcePropName = fi.Name;
col.SourceType = m.Expression.Type;
this.columns.Add(col);
return(Expression.Convert(Expression.Call(this.row, miGetValue, Expression.Constant(iColumn++)), m.Type));
}
else
{
throw new SiaqodbException("A Property must have UseVariable Attribute set");
}
}
catch
{
string fld = Sqo.Utilities.MetaHelper.GetBackingFieldByAttribute(m.Member);
if (fld != null)
{
SqoColumn col = new SqoColumn();
col.SourcePropName = fld;
col.SourceType = m.Expression.Type;
this.columns.Add(col);
return(Expression.Convert(Expression.Call(this.row, miGetValue, Expression.Constant(iColumn++)), m.Type));
}
else
{
throw new SiaqodbException("A Property must have UseVariable Attribute set");
}
}
#endif
}
}
#if WinRT
else if (m.Member.GetMemberType() == MemberTypes.Field)
#else
else if (m.Member.MemberType == System.Reflection.MemberTypes.Field)
#endif
{
SqoColumn col = new SqoColumn();
col.SourcePropName = m.Member.Name;
col.SourceType = m.Expression.Type;
this.columns.Add(col);
return(Expression.Convert(Expression.Call(this.row, miGetValue, Expression.Constant(iColumn++)), m.Type));
}
else
{
throw new NotSupportedException("Not supported Member Type!");
}
}
else
{
return(base.VisitMemberAccess(m));
}
}
