be.SIRAPRISE.typeimplementations

Class ScalarTypeDeclaration

java.lang.Object

be.SIRAPRISE.typeimplementations.TypeDeclaration

be.SIRAPRISE.typeimplementations.ScalarTypeDeclaration

public final class ScalarTypeDeclaration
extends TypeDeclaration

A ScalarTypeDeclaration is the type declaration for attributes in a heading if that attribute is not relation- or tuple-typed. A ScalarTypeDeclaration requires only the name of the concerned scalar type.

Author:

Erwin Smout

Field Summary

Fields inherited from class be.SIRAPRISE.typeimplementations.TypeDeclaration

INT, NAME, STRING

Constructor Summary

Constructors

Constructor and Description
ScalarTypeDeclaration(NameIdentifier typeName) Creates the typedeclaration-by-name
ScalarTypeDeclaration(java.lang.String typeName) Deprecated. deprecated

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
boolean	equalsScalarTypeDeclaration(ScalarTypeDeclaration obj) Checks whether this ScalarTypeDeclaration equals the one in obj.
static TypeDeclaration	getCommonScalarSubTypeDeclaration(ScalarTypeDeclaration t1, ScalarTypeDeclaration t2) Gets a declaration object for the least specific common subtype between t1 and t2
static TypeDeclaration	getCommonScalarSuperTypeDeclaration(ScalarTypeDeclaration typeDeclaration1, ScalarTypeDeclaration typeDeclaration2) Gets A TypeDeclaration object for the type that is the most specific common supertype between the two types given
ValueBuffer	getValueBuffer(java.nio.ByteBuffer attributeValueEncoding) Gets the appropriate (i.e.
int	hashCode()
boolean	isIntervalTyped() Checks whether the declared scalar type is interval-typed.
boolean	isScalar() Checks whether the declared type is scalar
boolean	matchesExpectedTypeDeclaration(TypeDeclaration expectedTypeDeclaration) Checks whether this type declaration "matches" the given expected type declaration, i.e.
java.lang.String	toString()

Methods inherited from class be.SIRAPRISE.typeimplementations.TypeDeclaration

getCommonSubTypeDeclaration, getCommonSuperTypeDeclaration, getTypeDeclaration, getTypeDeclaration, getTypeName, getTypeNameIdentifier, isNonScalarType, isScalarType

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ScalarTypeDeclaration

public ScalarTypeDeclaration(NameIdentifier typeName)

Creates the typedeclaration-by-name

Parameters:

typeName - The type name

ScalarTypeDeclaration

@Deprecated
public ScalarTypeDeclaration(java.lang.String typeName)

Deprecated. deprecated

Creates the typedeclaration-by-name

Parameters:

typeName - The type name

Method Detail

getCommonScalarSubTypeDeclaration

public static TypeDeclaration getCommonScalarSubTypeDeclaration(ScalarTypeDeclaration t1,
                                                                ScalarTypeDeclaration t2)
                                                         throws NotFoundException

Gets a declaration object for the least specific common subtype between t1 and t2

Parameters:

t1 - type 1

t2 - type 2

Returns:

a declaration object for the least specific common subtype between t1 and t2

Throws:

NotFoundException - If no such common subtype exists

getCommonScalarSuperTypeDeclaration

public static TypeDeclaration getCommonScalarSuperTypeDeclaration(ScalarTypeDeclaration typeDeclaration1,
                                                                  ScalarTypeDeclaration typeDeclaration2)
                                                           throws NotFoundException

Gets A TypeDeclaration object for the type that is the most specific common supertype between the two types given

Parameters:

typeDeclaration1 - type 1

typeDeclaration2 - type 2

Returns:

A TypeDeclaration object for the type that is the most specific common supertype between the two types given

Throws:

NotFoundException - if nosuch common supertype exists

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

equalsScalarTypeDeclaration

public boolean equalsScalarTypeDeclaration(ScalarTypeDeclaration obj)

Checks whether this ScalarTypeDeclaration equals the one in obj. ScalarTypeDeclarations are equal if and only if the canonical forms of their type names are the same.

Parameters:

obj - A ScalarTypeDeclaration to be compared for equality with this one.

Returns:

true if this ScalarTypeDeclaration equals the one in obj

getValueBuffer

public ValueBuffer getValueBuffer(java.nio.ByteBuffer attributeValueEncoding)

Description copied from class: TypeDeclaration

Gets the appropriate (i.e. corresponding to this type declaration) ValueBuffer holding the given encoded value

Specified by:

getValueBuffer in class TypeDeclaration

Parameters:

attributeValueEncoding - an encoding of a value of this type

Returns:

the appropriate (i.e. corresponding to this type declaration) ValueBuffer holding the given encoded value

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

isIntervalTyped

public boolean isIntervalTyped()

Description copied from class: TypeDeclaration

Checks whether the declared scalar type is interval-typed. The system reserves type names ending with 'INTERVAL' for interval types.

Specified by:

isIntervalTyped in class TypeDeclaration

Returns:

true if the declared scalar type is interval-typed.

isScalar

public boolean isScalar()

Description copied from class: TypeDeclaration

Checks whether the declared type is scalar

Specified by:

isScalar in class TypeDeclaration

Returns:

true if the declared type is scalar

matchesExpectedTypeDeclaration

public boolean matchesExpectedTypeDeclaration(TypeDeclaration expectedTypeDeclaration)

Description copied from class: TypeDeclaration

Checks whether this type declaration "matches" the given expected type declaration, i.e. checks whether this type declaration is for a subtype of the expected one

Specified by:

matchesExpectedTypeDeclaration in class TypeDeclaration

Parameters:

expectedTypeDeclaration - A type declaration that is expected to be a declaration for a supertype of this one

Returns:

true if the given expected type declaration declares a supertype of the type declared by this declaration

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object