com.bonevich.erj.model
Class Attribute

java.lang.Object
  |
  +--com.bonevich.erj.model.ModelElement
        |
        +--com.bonevich.erj.model.Attribute

All Implemented Interfaces:

ErjConstants

public final class Attribute

extends ModelElement

A class that represents an attribute of a relation (i.e. a column in a table). Attributes must have a type (which may be a predefined DataType or a user-defined Domain, both of which implement the AttributeType typing interface) and a constraint (NULL or NOTNULL as defined by AttributeConstraint). Attributes also may optionally have a default value and a set of associated keys.

Author:

Jeffrey D. Bonevich

See Also:

Relation, AttributeType, AttributeConstraint, KeyConstraint

Field Summary

static java.lang.String

NEW_ATTRIBUTE_STR

Fields inherited from class com.bonevich.erj.model.ModelElement

_description, _dyn_description, _dyn_identifier, _dyn_name, _identifier, _name

Fields inherited from interface com.bonevich.erj.ErjConstants

EDITOR_COLOR, EDITOR_FONT, EMPTY_STR, ICON_AK, ICON_DOMAIN, ICON_FK, ICON_FOREIGNKEY, ICON_NOTNULL, ICON_NULL, ICON_PK, ICON_RELATION, ICON_SCHEMA, ICON_SPLASH, INITIAL_FRAME_SIZE, LABEL_COLOR, LABEL_FILL, LABEL_FONT, LABEL_FONT_ITALIC, LABEL_FONT_SIZE, LABEL_FONTMETRICS, STATUSBAR_COLOR, STATUSBAR_FONT, STATUSBAR_FONT_ITALIC, STATUSBAR_MOD_FILL, SUBLABEL_FILL

Constructor Summary

	Attribute() Default constructor needed for diagram loading.
	Attribute(Relation relation) Create a new attribute for a given Relation.
protected	Attribute(Relation relation, Attribute that)

Method Summary

void	accept(ModelElementVisitor visitor)
void	addKey(KeyConstraint key)
void	dispose() Delete all keys of which this attribute is a member.
boolean	equals(java.lang.Object rhs)
AttributeConstraint	getConstraint()
DefaultValue	getDefaultValue()
java.util.Iterator	getKeyIterator()
Relation	getRelation()
AttributeType	getType()
boolean	isForeignKey()
boolean	isPrimaryKey()
boolean	isUniqueKey()
void	removeKey(KeyConstraint key)
void	setConstraint(AttributeConstraint constraint)
void	setDefaultValue(DefaultValue value)
void	setType(AttributeType type)

Methods inherited from class com.bonevich.erj.model.ModelElement

getDescription, getIdentifier, getName, getOclReferenceId, isNameInitialized, setDescription, setIdentifier, setName, toString

Methods inherited from class java.lang.Object

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

Field Detail

NEW_ATTRIBUTE_STR

public static final java.lang.String NEW_ATTRIBUTE_STR

See Also:

Constant Field Values

Constructor Detail

Attribute

public Attribute(Relation relation)

Create a new attribute for a given Relation. You should use Relation.createAttribute()

Attribute

protected Attribute(Relation relation,
                    Attribute that)

Attribute

public Attribute()

Default constructor needed for diagram loading.

Method Detail

getType

public AttributeType getType()

setType

public void setType(AttributeType type)

getDefaultValue

public DefaultValue getDefaultValue()

setDefaultValue

public void setDefaultValue(DefaultValue value)

setConstraint

public void setConstraint(AttributeConstraint constraint)

getConstraint

public AttributeConstraint getConstraint()

getRelation

public Relation getRelation()

addKey

public void addKey(KeyConstraint key)

removeKey

public void removeKey(KeyConstraint key)

getKeyIterator

public java.util.Iterator getKeyIterator()

isPrimaryKey

public boolean isPrimaryKey()

isUniqueKey

public boolean isUniqueKey()

isForeignKey

public boolean isForeignKey()

dispose

public void dispose()

Delete all keys of which this attribute is a member.

Specified by:

dispose in class ModelElement

equals

public boolean equals(java.lang.Object rhs)

Overrides:

equals in class ModelElement

accept

public void accept(ModelElementVisitor visitor)

Specified by:

accept in class ModelElement