ADSQLUnaryExpression

public class ADSQLUnaryExpression: ADSQLExpression

Defines a unary expression used in a SQL instruction such as forcing a value to be positive or negative.

  • Defines the type of unary expression.

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    Declaration

    Swift

    public enum UnaryOperation: String
  • Evaluates the given expression and returns a result based on the data in the record passed in.

    Declaration

    Swift

    @discardableResult public func evaluate(forRecord row: ADRecord? = nil) throws -> Any?

    Parameters

    row

    A ADRecord containing values to be evaluated against the expression.

    Return Value

    The result of the evaluation.

  • Encodes the expression into an Instance Dictionary for storage in a Swift Portable Object Notation (SPON) format. -Returns: The expression represented as an Instance Dictionary.

    Declaration

    Swift

    public func encode() -> ADInstanceDictionary
  • Decodes the expression from an Instance Dictionary that has been read from a Swift Portable Object Notation (SPON) stream.

    Declaration

    Swift

    public func decode(fromInstance dictionary: ADInstanceDictionary)

    Parameters

    dictionary

    A ADInstanceDictionary representing the values for the expression.