Package org.eclipse.persistence.internal.expressions

Class TableAliasLookup

java.lang.Object

org.eclipse.persistence.internal.expressions.TableAliasLookup

All Implemented Interfaces:

Serializable

public class TableAliasLookup
extends Object
implements Serializable

INTERNAL: Represents the aliased tables an ObjectExpression will be translated to, along with any of its derived TableExpressions. For bug 2778339 / CR 2456, this Lookup also represents identity. Two expressions with the same Lookup will be translated to the same table(s).

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	haveBeenAddedToStatement
protected DatabaseTable[]	keys
protected int	lastUsed
protected DatabaseTable[]	values

Constructor Summary

Constructors

Constructor	Description
TableAliasLookup()	TableAliasLookup constructor comment.
TableAliasLookup(int initialSize)	TableAliasLookup constructor comment.

Method Summary

Modifier and Type	Method	Description
void	addToMap(Map<DatabaseTable,DatabaseTable> map)
DatabaseTable	get(DatabaseTable key)
boolean	haveBeenAddedToStatement()	INTERNAL: Answers if the aliases have already been added to a statement.
boolean	isEmpty()	isEmpty method comment.
DatabaseTable	keyAtValue(DatabaseTable value)
DatabaseTable[]	keys()
DatabaseTable	put(DatabaseTable key, DatabaseTable value)	put method comment.
void	setHaveBeenAddedToStatement(boolean value)	INTERNAL: Called when aliases are added to a statement.
int	size()	size method comment.
String	toString()
DatabaseTable[]	values()

Methods inherited from class java.lang.Object

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

Field Detail

keys

protected DatabaseTable[] keys

values

protected DatabaseTable[] values

lastUsed

protected int lastUsed

haveBeenAddedToStatement

protected boolean haveBeenAddedToStatement

Constructor Detail

TableAliasLookup

public TableAliasLookup()

TableAliasLookup constructor comment.

TableAliasLookup

public TableAliasLookup(int initialSize)

TableAliasLookup constructor comment.

Method Detail

addToMap

public void addToMap(Map<DatabaseTable,DatabaseTable> map)

get

public DatabaseTable get(DatabaseTable key)

haveBeenAddedToStatement

public boolean haveBeenAddedToStatement()

INTERNAL: Answers if the aliases have already been added to a statement. This insures that a subselect will not re-add aliases already in a parent FROM clause. For CR#4223

isEmpty

public boolean isEmpty()

isEmpty method comment.

keyAtValue

public DatabaseTable keyAtValue(DatabaseTable value)

keys

public DatabaseTable[] keys()

put

public DatabaseTable put(DatabaseTable key,
                         DatabaseTable value)

put method comment.

setHaveBeenAddedToStatement

public void setHaveBeenAddedToStatement(boolean value)

INTERNAL: Called when aliases are added to a statement. This insures that a subselect will not re-add aliases already in a parent FROM clause. For CR#4223

size

public int size()

size method comment.

toString

public String toString()

Overrides:

toString in class Object

values

public DatabaseTable[] values()