private string toOrderClause(Ordering clause)
{
var locator = _mapping.JsonLocator(clause.Expression);
return(clause.OrderingDirection == OrderingDirection.Asc
? locator
: locator + " desc");
}
protected override Expression VisitMember(MemberExpression expression)
{
if (expression.Type == typeof(bool))
{
var locator = _mapping.JsonLocator(expression);
var @where = new WhereFragment($"{locator} = False");
_callback(@where);
}
return(base.VisitMember(expression));
}
public void ConfigureAggregate(CommandBuilder sql, string @operator)
{
var locator = _mapping.JsonLocator(Model.SelectClause.Selector);
var field = @operator.ToFormat(locator);
sql.Append("select ");
sql.Append(field);
sql.Append(" from ");
sql.Append(_mapping.Table.QualifiedName);
sql.Append(" as d");
AppendWhere(sql);
}
/// <summary>
/// Returns a locator for the member being queried upon
/// </summary>
/// <param name="mapping"></param>
/// <param name="expression"></param>
/// <returns></returns>
protected virtual string GetLocator(IQueryableDocument mapping, MethodCallExpression expression)
{
if (!expression.Method.IsStatic && expression.Object != null && expression.Object.NodeType != ExpressionType.Constant)
{
// x.member.Equals(...)
return(mapping.JsonLocator(expression.Object));
}
if (expression.Arguments[0].NodeType == ExpressionType.Constant)
{
// string.Equals("value", x.member)
return(mapping.JsonLocator(expression.Arguments[1]));
}
// string.Equals(x.member, "value")
return(mapping.JsonLocator(expression.Arguments[0]));
}
protected override Expression VisitMember(MemberExpression expression)
{
if (expression.Type == typeof(bool))
{
var locator = _mapping.JsonLocator(expression);
var whereFragments = new List <IWhereFragment>
{
new WhereFragment($"{locator} IS NULL"),
new WhereFragment($"{locator} != ?", true)
};
var @where = new CompoundWhereFragment("or", whereFragments.ToArray());
_callback(@where);
}
return(base.VisitMember(expression));
}
public static string ToOrderClause(this Ordering clause, IQueryableDocument mapping)
{
var locator = mapping.JsonLocator(clause.Expression);
return(clause.OrderingDirection == OrderingDirection.Asc
? locator
: locator + " desc");
}
protected override Expression VisitMember(MemberExpression expression)
{
if (expression.Type == typeof(bool))
{
var locator = _mapping.JsonLocator(expression);
var where = new WhereFragment("{0} = True".ToFormat(locator), true);
_register.Peek()(where);
return(null);
}
return(base.VisitMember(expression));
}
/// <summary>
/// Returns a locator for the member being queried upon
/// </summary>
/// <param name="mapping"></param>
/// <param name="expression"></param>
/// <returns></returns>
protected virtual string GetLocator(IQueryableDocument mapping, MethodCallExpression expression)
{
if (!expression.Method.IsStatic && expression.Object != null && expression.Object.NodeType != ExpressionType.Constant)
{
// x.member.Equals(...)
return mapping.JsonLocator(expression.Object);
}
if (expression.Arguments[0].NodeType == ExpressionType.Constant)
{
// string.Equals("value", x.member)
return mapping.JsonLocator(expression.Arguments[1]);
}
// string.Equals(x.member, "value")
return mapping.JsonLocator(expression.Arguments[0]);
}
