org.vizzini.database
Class JunctionData

java.lang.Object
  org.vizzini.database.JoinData
      org.vizzini.database.JunctionData

 class JunctionData
extends JoinData

Provides storage for data detailing a junction between two tables. The middle table is constructed automatically.

Since:

v0.3

Version:

v0.3

Author:

Jeffrey M. Thompson

Constructor Summary

JunctionData()

Method Summary

void	associate(IRecord record0, IRecord record1) Associate the given records by inserting a new record in the middle table.
String	constructSelectExpression(ITableData targetTableData, IRecord record, boolean forward) Construct a select expression using this join.
void	disassociate(IRecord record0, IRecord record1) Disassociate the given records by deleting the existing record in the middle table.
String	getColumnName22() Return the middle table second column name.
String	getColumnName3() Return the third table column name.
String	getLastTableName() Return the last table name.
String	getTableName3() Return the third table name.
void	inflate(Element element) Inflate this object from the given XML element.
boolean	match(String startTableName, String endTableName) Return true if the given table names match this join.
void	setColumnName22(String name) Set the middle table second column name.
void	setColumnName3(String name) Set the third column name.
void	setTableName3(String name) Set the third table name.
String	toDebugString() Return a debug string representation of this object.

Methods inherited from class org.vizzini.database.JoinData

getColumnName1, getColumnName2, getTableName1, getTableName2, setColumnName1, setColumnName2, setTableName1, setTableName2, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

JunctionData

JunctionData()

Method Detail

associate

public void associate(IRecord record0,
                      IRecord record1)
               throws SQLException

Associate the given records by inserting a new record in the middle table.

Overrides:

associate in class JoinData

Throws:

SQLException

Since:

v0.3

constructSelectExpression

public String constructSelectExpression(ITableData targetTableData,
                                        IRecord record,
                                        boolean forward)

Construct a select expression using this join.

Overrides:

constructSelectExpression in class JoinData

Since:

v0.3

disassociate

public void disassociate(IRecord record0,
                         IRecord record1)
                  throws SQLException

Disassociate the given records by deleting the existing record in the middle table.

Overrides:

disassociate in class JoinData

Throws:

SQLException

Since:

v0.3

getColumnName22

public String getColumnName22()

Return the middle table second column name.

Since:

v0.3

getColumnName3

public String getColumnName3()

Return the third table column name.

Since:

v0.3

getLastTableName

public String getLastTableName()

Return the last table name. For this class, this is the third table name.

Overrides:

getLastTableName in class JoinData

Since:

v0.3

getTableName3

public String getTableName3()

Return the third table name.

Since:

v0.3

inflate

public void inflate(Element element)

Inflate this object from the given XML element.

Overrides:

inflate in class JoinData

Since:

v0.3

match

public boolean match(String startTableName,
                     String endTableName)

Return true if the given table names match this join.

Overrides:

match in class JoinData

Since:

v0.3

setColumnName22

public void setColumnName22(String name)

Set the middle table second column name.

Since:

v0.3

setColumnName3

public void setColumnName3(String name)

Set the third column name.

Since:

v0.3

setTableName3

public void setTableName3(String name)

Set the third table name.

Since:

v0.3

toDebugString

public String toDebugString()

Return a debug string representation of this object.

Overrides:

toDebugString in class JoinData

Since:

v0.3