Package edu.caltech.nanodb.relations

Class ForeignKeyColumnRefs

java.lang.Object

edu.caltech.nanodb.relations.ForeignKeyColumnRefs

public class ForeignKeyColumnRefs
extends java.lang.Object

This class represents a foreign key constraint between two tables in the database. The referencing table is not recorded in this data structure because this key will be a member of that table's schema.

Field Summary

Fields

Modifier and Type	Field	Description
private int[]	colIndexes	This is the array of column indexes in the referencing table of the foreign key.
private java.lang.String	constraintName	This is the optional name of the constraint specified in the DDL.
private ForeignKeyValueChangeOption	onDeleteOption	This is the ON DELETE behavior
private ForeignKeyValueChangeOption	onUpdateOption	This is the ON UPDATE behavior
private int[]	referencedColIndexes	These are the indexes of the columns in the referenced table.
private java.lang.String	referencedTable	This is the name of the referenced table in the foreign key.

Constructor Summary

Constructors

Constructor	Description
ForeignKeyColumnRefs(int[] colIndexes, java.lang.String referencedTable, int[] referencedColIndexes, ForeignKeyValueChangeOption onDeleteOption, ForeignKeyValueChangeOption onUpdateOption)

Method Summary

Modifier and Type	Method	Description
int	getCol(int i)
int[]	getCols()
java.lang.String	getConstraintName()
ForeignKeyValueChangeOption	getOnDeleteOption()
ForeignKeyValueChangeOption	getOnUpdateOption()
int	getRefCol(int i)
int[]	getRefCols()
java.lang.String	getRefTable()
void	setConstraintName(java.lang.String constraintName)
int	size()	Returns the number of columns in the foreign key constraint.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

constraintName

private java.lang.String constraintName

This is the optional name of the constraint specified in the DDL.

colIndexes

private int[] colIndexes

This is the array of column indexes in the referencing table of the foreign key.

referencedTable

private java.lang.String referencedTable

This is the name of the referenced table in the foreign key.

referencedColIndexes

private int[] referencedColIndexes

These are the indexes of the columns in the referenced table.

onDeleteOption

private ForeignKeyValueChangeOption onDeleteOption

This is the ON DELETE behavior

onUpdateOption

private ForeignKeyValueChangeOption onUpdateOption

This is the ON UPDATE behavior

Constructor Detail

ForeignKeyColumnRefs

public ForeignKeyColumnRefs(int[] colIndexes,
                            java.lang.String referencedTable,
                            int[] referencedColIndexes,
                            ForeignKeyValueChangeOption onDeleteOption,
                            ForeignKeyValueChangeOption onUpdateOption)

Method Detail

getConstraintName

public java.lang.String getConstraintName()

setConstraintName

public void setConstraintName(java.lang.String constraintName)

size

public int size()

Returns the number of columns in the foreign key constraint.

getCol

public int getCol(int i)

getCols

public int[] getCols()

getRefTable

public java.lang.String getRefTable()

getRefCol

public int getRefCol(int i)

getRefCols

public int[] getRefCols()

getOnDeleteOption

public ForeignKeyValueChangeOption getOnDeleteOption()

getOnUpdateOption

public ForeignKeyValueChangeOption getOnUpdateOption()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object