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Index ¶
Constants ¶
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const ( // Gt = Greater than. Gt = ">" // Gte = Greater than equals. Gte = ">=" // Eq = Equals. Eq = "=" // Neq = Not equals. Neq = "!=" // Lt = Less than. Lt = "<" // Lte = Less than equals. Lte = "<=" // In = In given set. In = "in" // Nin = Not in given set. Nin = "not in" // IsNull = Is null. IsNull = "isnull" // IsNotNull = IsNotNull. IsNotNull = "isnotnull" )
Variables ¶
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var Inverse = map[string]string{ Gt: Lte, Gte: Lt, Eq: Neq, Lt: Gte, Lte: Gt, In: Nin, Nin: In, IsNotNull: IsNull, IsNull: IsNotNull, }
Inverse is a mapping from one comparator to its inverse.
Functions ¶
This section is empty.
Types ¶
type Filter ¶
type Filter struct {
// Comparator may be a string referring to a built in or a function taking an argument matching the
// column type and returning a bool bool.
//
// IMPORTANT: For pointer and reference types you must not assume that the data passed argument
// to this function is valid after the function returns. If you plan to keep it around you need
// to take a copy of the data.
Comparator interface{}
// Column is the name to filter by
Column string
// Arg is passed as argument to built in functions.
Arg interface{}
// Inverse can be set to true to negate the filter.
Inverse bool
}
Filter represents a filter to apply to a QFrame.
Example using a built in comparator on a float column:
Filter{Comparator: ">", Column: "COL1", Arg: 1.2}
Same example as above but with a custom function:
Filter{Comparator: func(f float64) bool { return f > 1.2 }, Column: "COL1"}
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