com.exasol.sql.dql.select

Class LimitClause

java.lang.Object

com.exasol.sql.AbstractFragment

com.exasol.sql.dql.select.LimitClause

All Implemented Interfaces:

SelectFragment, Fragment

public class LimitClause
extends AbstractFragment
implements SelectFragment

This class represents the limit clause of an SQL statement. It lets you choose offset and / or count of rows to be handed back in the result.

Field Summary

Fields inherited from class com.exasol.sql.AbstractFragment

root

Constructor Summary

Constructors

Constructor and Description
LimitClause(SqlStatement root, int count) Create a new instance of a LimitClause
LimitClause(SqlStatement root, int offset, int count) Create a new instance of a LimitClause

Method Summary

Modifier and Type	Method and Description
void	accept(SelectVisitor visitor) Accept a visitor (e.g.
int	getCount() Get the maximum number of rows to be handed back
int	getOffset() Get the offset row for the limit
boolean	hasOffset() Check if the limit clause has an offset

Methods inherited from class com.exasol.sql.AbstractFragment

getRoot

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.exasol.sql.Fragment

getRoot

Constructor Detail

LimitClause

public LimitClause(SqlStatement root,
                   int count)

Create a new instance of a LimitClause

Parameters:

root - SQL statement this LIMIT clause belongs to

count - maximum number of rows to be included in the query result

LimitClause

public LimitClause(SqlStatement root,
                   int offset,
                   int count)

Create a new instance of a LimitClause

Parameters:

root - SQL statement this LIMIT clause belongs to

offset - index of the first row to be included in the query result

count - maximum number of rows to be included in the query result

Method Detail

getOffset

public int getOffset()

Get the offset row for the limit

Returns:

first row which should be handed back

getCount

public int getCount()

Get the maximum number of rows to be handed back

Returns:

maximum number of rows

hasOffset

public boolean hasOffset()

Check if the limit clause has an offset

Returns:

true if the limit clause has an offset

accept

public void accept(SelectVisitor visitor)

Description copied from interface: SelectFragment

Accept a visitor (e.g. a renderer or validator)

Specified by:

accept in interface SelectFragment

Parameters:

visitor - visitor to accept