Package net.ontopia.persistence.query.sql

Class SQLJoin

java.lang.Object

net.ontopia.persistence.query.sql.SQLJoin

All Implemented Interfaces:

SQLExpressionIF

public class SQLJoin
extends Object
implements SQLExpressionIF

INTERNAL: SQL expression: join. Represents a join between two tables. A join is a query that combines rows from two or more tables, views, or materialized views ("snapshots").

Cross joins, left outer joins and right outer joins are supported.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	CROSS
protected int	jointype
protected SQLColumns	left
static final int	LEFT_OUTER
protected SQLColumns	right
static final int	RIGHT_OUTER

Fields inherited from interface net.ontopia.persistence.query.sql.SQLExpressionIF

AND, EQUALS, EXISTS, FALSE, IN, IS_NULL, JOIN, LIKE, NOT, NOT_EQUALS, OR, SET_OPERATION, VALUE_EXPRESSION, VERBATIM

Constructor Summary

Constructors

Constructor	Description
SQLJoin()
SQLJoin(SQLColumns left, SQLColumns right)
SQLJoin(SQLColumns left, SQLColumns right, int jointype)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
int	getJoinType()
SQLColumns	getLeft()
SQLColumns	getRight()
int	getType()	INTERNAL: Returns the expression type.
int	hashCode()
void	setJoinType(int jointype)
void	setLeft(SQLColumns left)
void	setRight(SQLColumns right)
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

CROSS

public static final int CROSS

See Also:

• Constant Field Values

LEFT_OUTER

public static final int LEFT_OUTER

See Also:

• Constant Field Values

RIGHT_OUTER

public static final int RIGHT_OUTER

See Also:

• Constant Field Values

jointype

protected int jointype

left

protected SQLColumns left

right

protected SQLColumns right

Constructor Details

SQLJoin

public SQLJoin()

SQLJoin

public SQLJoin(SQLColumns left,
 SQLColumns right)

SQLJoin

public SQLJoin(SQLColumns left,
 SQLColumns right,
 int jointype)

Method Details

getType

public int getType()

Description copied from interface: SQLExpressionIF

INTERNAL: Returns the expression type. The type is represented by one of the constants in the SQLExpressionIF interface.

Specified by:

getType in interface SQLExpressionIF

getJoinType

public int getJoinType()

setJoinType

public void setJoinType(int jointype)

getLeft

public SQLColumns getLeft()

setLeft

public void setLeft(SQLColumns left)

getRight

public SQLColumns getRight()

setRight

public void setRight(SQLColumns right)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object