Package ru.curs.celesta.score

Class Index

java.lang.Object

ru.curs.celesta.score.NamedElement

ru.curs.celesta.score.GrainElement

ru.curs.celesta.score.Index

All Implemented Interfaces:

HasColumns

public class Index
extends GrainElement
implements HasColumns

Table index. Celesta permits only creation of simple indices without UNIQUE restriction.

Field Summary

Fields inherited from class ru.curs.celesta.score.NamedElement

MAX_IDENTIFIER_LENGTH

Constructor Summary

Constructors

Constructor	Description
Index(BasicTable t, String name, String[] columns)

Method Summary

Modifier and Type	Method	Description
void	delete()	Deletes the index.
int	getColumnIndex(String name)	Column index in the list of columns.
Map<String,Column<?>>	getColumns()	Returns columns of the index.
BasicTable	getTable()	Returns table of the index.
boolean	isUnique()	If the index is unique.
void	setUnique(boolean unique)	Sets the "unique" property for the index.

Methods inherited from class ru.curs.celesta.score.GrainElement

getGrain, getGrainPart

Methods inherited from class ru.curs.celesta.score.NamedElement

equals, getCelestaDoc, getName, getQuotedName, getQuotedNameIfNeeded, hashCode, limitName, limitName, setCelestaDoc

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Index

public Index(BasicTable t,
 String name,
 String[] columns)
      throws ParseException

Throws:

ParseException

Method Details

getTable

public BasicTable getTable()

Returns table of the index.

getColumns

public Map<String,Column<?>> getColumns()

Returns columns of the index.

Specified by:

getColumns in interface HasColumns

delete

public void delete()
            throws ParseException

Deletes the index.

Throws:

ParseException - when trying to change the system grain

getColumnIndex

public int getColumnIndex(String name)

Description copied from interface: HasColumns

Column index in the list of columns.

Specified by:

getColumnIndex in interface HasColumns

Parameters:

name - column name.

isUnique

public boolean isUnique()

If the index is unique.

setUnique

public void setUnique(boolean unique)
               throws ParseException

Sets the "unique" property for the index.

Parameters:

unique - uniqueness value

Throws:

ParseException