toolkit.db.api

Class JoinInfo

java.lang.Object

toolkit.db.api.JoinInfo

public class JoinInfo
extends java.lang.Object

JoinInfo wraps all information of related Joins.

Constructor Summary

Constructors

Constructor and Description
JoinInfo(ColumnInfo columnFrom, java.lang.String sOperator, ColumnInfo columnTo, int iJoinType, boolean bSQL92, boolean bSelfJoin) Constructor.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj) Compares this JoinInfo to the specified object.
ColumnInfo	getColumnFrom() Gets the FROM column's ColumnInfo.
ColumnInfo	getColumnTo() Gets the ColumnInfo of the TO column.
int	getJoinType() Gets the outer join type.
java.lang.String	getOperator() Gets the value of the OPERATOR's string.
boolean	isFullOuterJoin() Gets whether this is a full outer join table.
boolean	isLeftOuterJoin() Gets whether this is a left outer join table.
boolean	isOuterJoin() Gets whether this is an outer join table.
boolean	isRightOuterJoin() Gets whether this is a right outer join table.
boolean	isSelfJoin() Gets whether this is a self join.
boolean	isSQL92() Gets whether this join applies SQL92 standard.
java.lang.String	toString() Returns a string representing this JoinInfo's values.

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

JoinInfo

public JoinInfo(ColumnInfo columnFrom,
                java.lang.String sOperator,
                ColumnInfo columnTo,
                int iJoinType,
                boolean bSQL92,
                boolean bSelfJoin)

Constructor.

Parameters:

columnFrom - The FROM column of the join.

sOperator - The sOperator of the join condition. The valid value can be "=", ">", "<", etc.

columnTo - The TO column of the join.

iJoinType - The join type, whose values are: INNER_JOIN = 0; RIGHT_OUTER_JOIN = 1; FULL_OUTER_JOIN = 2; LEFT_OUTER_JOIN = 4; OUTER_JOIN = 7; UNION_JOIN = 8;

bSQL92 - Whether this join applies SQL92 standard.

bSelfJoin - Whether this is a self join.

Method Detail

getColumnFrom

public ColumnInfo getColumnFrom()

Gets the FROM column's ColumnInfo.

Returns:

the ColumnInfo of the FROM column.

getOperator

public java.lang.String getOperator()

Gets the value of the OPERATOR's string.

Returns:

the OPERATOR value.

getColumnTo

public ColumnInfo getColumnTo()

Gets the ColumnInfo of the TO column.

Returns:

the ColumnInfo of the TO column.

getJoinType

public int getJoinType()

Gets the outer join type.

Returns:

the type of the outer join.

isOuterJoin

public boolean isOuterJoin()

Gets whether this is an outer join table.

Returns:

true if this is an outer join table, false otherwise.

isLeftOuterJoin

public boolean isLeftOuterJoin()

Gets whether this is a left outer join table.

Returns:

true if this is a left outer join table, false otherwise.

isRightOuterJoin

public boolean isRightOuterJoin()

Gets whether this is a right outer join table.

Returns:

true if this is a right outer join table, false otherwise.

isFullOuterJoin

public boolean isFullOuterJoin()

Gets whether this is a full outer join table.

Returns:

true if this is a full outer join table, false otherwise.

isSQL92

public boolean isSQL92()

Gets whether this join applies SQL92 standard.

Returns:

true if this join applies SQL92 standard, false otherwise.

isSelfJoin

public boolean isSelfJoin()

Gets whether this is a self join.

Returns:

true if this is a self join, false otherwise.

equals

public boolean equals(java.lang.Object obj)

Compares this JoinInfo to the specified object.

Overrides:

equals in class java.lang.Object

Returns:

true if the JoinInfo are the same, false otherwise.

toString

public java.lang.String toString()

Returns a string representing this JoinInfo's values. The format is as follows:

  className@hashCode[ mappingNameOfFromColumn | operator | mappingNameOfToColumn | 
                      joinTypeString | isSQL92 | isSelfJoin ]
        

Overrides:

toString in class java.lang.Object

Returns:

a string representing of this JoinInfo.