gudusoft.gsqlparser.dlineage.routine

Class ArgumentTypeKey

Object

gudusoft.gsqlparser.dlineage.routine.ArgumentTypeKey

public final class ArgumentTypeKey
extends Object

The declared type of one routine parameter, as a definition discriminator: two declarations of one routine name whose parameter types differ are different routines (overloads).

A type the parser recognizes is its EDataType, whatever its spelling, with the standard synonyms folded (INT, INTEGER and INT4 are one type), and without modifiers: the vendors that overload by type do not tell overloads apart by length, precision, format or character set (PostgreSQL ignores typmods in a function's identity; Teradata says such attributes do not make a function unique). Only attributes that change the type itself are kept: an anchoring %TYPE or %ROWTYPE, and WITH TIME ZONE. A named type (a user-defined type, or an anchored reference) is its name path, each component keyed by the analysis IdentifierService, so a quoted "T" and an unquoted t stay apart where the vendor keeps them apart. An array or list type carries its element type. A type with no structure the parser exposes is its text as written, compared exactly, as before.

It never decides whether an actual argument is compatible with a formal parameter.

Field Summary

Fields

Modifier and Type	Field and Description
static ArgumentTypeKey	EMPTY A parameter the parser gave no data type.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
int	hashCode()
static ArgumentTypeKey	of(TTypeName type, EDbVendor vendor, IdentifierService service)
String	toString()

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

EMPTY

public static final ArgumentTypeKey EMPTY

A parameter the parser gave no data type.

Method Detail

of

public static ArgumentTypeKey of(TTypeName type,
                                 EDbVendor vendor,
                                 IdentifierService service)

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object