ru.curs.celesta.score

Class AbstractView

java.lang.Object

ru.curs.celesta.score.NamedElement

ru.curs.celesta.score.GrainElement

ru.curs.celesta.score.DataGrainElement

ru.curs.celesta.score.AbstractView

All Implemented Interfaces:

HasColumns

Direct Known Subclasses:

MaterializedView, View

public abstract class AbstractView
extends DataGrainElement

Base class for all view data elements.

Since:

2017-06-08

Author:

ioann

Field Summary

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

MAX_IDENTIFIER_LENGTH

Constructor Summary

Constructors

Constructor and Description
AbstractView(GrainPart grainPart, String name)

Method Summary

Modifier and Type	Method and Description
Map<String,Expr>	getAggregateColumns()
int	getColumnIndex(String name) Returns column index by column name.
Column<?>	getColumnRef(String colName) Returns column reference by column name.
abstract Map<String,? extends ColumnMeta<?>>	getColumns() Returns a map of columns of the view.
Map<String,TableRef>	getTables()
void	selectScript(PrintWriter bw, SQLGenerator gen) Writes SELECT script to the stream.

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

delete

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, setCelestaDoc

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractView

public AbstractView(GrainPart grainPart,
                    String name)
             throws ParseException

Throws:

ParseException

Method Detail

selectScript

public void selectScript(PrintWriter bw,
                         SQLGenerator gen)
                  throws IOException

Writes SELECT script to the stream.

Parameters:

bw - output stream

gen - SQL generator (visitor)

Throws:

IOException - if writing to stream fails

getColumns

public abstract Map<String,? extends ColumnMeta<?>> getColumns()

Returns a map of columns of the view.

Returns:

getTables

public Map<String,TableRef> getTables()

getColumnIndex

public int getColumnIndex(String name)

Returns column index by column name.

Parameters:

name - column name.

getAggregateColumns

public Map<String,Expr> getAggregateColumns()

getColumnRef

public Column<?> getColumnRef(String colName)

Returns column reference by column name.

Parameters:

colName - Column name.

Returns: