ExprDataSet class abstract

Corresponds to Pascal TmyParser Corresponds to Delphi's TDataSet/TField: the evaluator can register datasets, and expressions read values via Dataset.COUNT / .BOF / .EOF / .STATE / .field (FindField).

Constructors

ExprDataSet()

Properties

bof → bool

Whether the cursor is before the first record.

no setter

eof → bool

Whether the cursor is after the last record.

no setter

hashCode → int

The hash code for this object.

no setter, inherited

recordCount → int

Number of records.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

state → String

Edit state: BROWSE, EDIT, INSERT or INACTIVE.

no setter

Methods

fieldValue(String name) → dynamic

Value of field name in the current record.

fieldValueAt(int index) → dynamic

Value of the field at 0-based index in the current record.

hasField(String name) → bool

Whether the dataset has a field called name.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited