Package tech.ydb.yoj.repository.ydb.yql

Class YqlLimit

java.lang.Object

tech.ydb.yoj.repository.ydb.yql.YqlLimit

All Implemented Interfaces:

YqlStatementPart<YqlLimit>

public final class YqlLimit
extends Object
implements YqlStatementPart<YqlLimit>

Represents a LIMIT ... [OFFSET ...] clause in a YQL statement.

See Also:

• top(long)
• range(long, long)
• toYql(EntitySchema)

Field Summary

Fields

Modifier and Type	Field	Description
static final YqlLimit	EMPTY

Method Summary

Modifier and Type	Method	Description
List<? extends YqlStatementPart<?>>	combine(@NonNull List<? extends YqlLimit> other)
static YqlLimit	empty()
int	getPriority()
String	getType()
String	getYqlPrefix()
boolean	isEmpty()
static YqlLimit	range(long from, long to)	Creates a limit clause to fetch rows in the half-open range [from, to).
long	size()
static YqlLimit	top(long n)	Creates a limit clause to fetch top n rows, as if by calling range(0, n).
String	toString()
<T extends tech.ydb.yoj.repository.db.Entity<T>> String	toYql(@NonNull tech.ydb.yoj.repository.db.EntitySchema<T> schema)

Methods inherited from class java.lang.Object

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

Methods inherited from interface tech.ydb.yoj.repository.ydb.yql.YqlStatementPart

toFullYql

Field Details

EMPTY

public static final YqlLimit EMPTY

Method Details

range

public static YqlLimit range(long from,
 long to)

Creates a limit clause to fetch rows in the half-open range [from, to).

Parameters:

from - first row index, counting from 0, inclusive

to - last row index, counting from 0, exclusive

Returns:

limit clause to fetch rows in range [from, to)

top

public static YqlLimit top(long n)

Creates a limit clause to fetch top n rows, as if by calling range(0, n).

Parameters:

n - number of rows to fetch

Returns:

limit clause to fetch top n rows

empty

public static YqlLimit empty()

Returns:

limit clause that fetches no rows

See Also:

• EMPTY

size

public long size()

isEmpty

public boolean isEmpty()

getPriority

public int getPriority()

Specified by:

getPriority in interface YqlStatementPart<YqlLimit>

getType

public String getType()

Specified by:

getType in interface YqlStatementPart<YqlLimit>

getYqlPrefix

public String getYqlPrefix()

Specified by:

getYqlPrefix in interface YqlStatementPart<YqlLimit>

toYql

public <T extends tech.ydb.yoj.repository.db.Entity<T>>
String toYql(@NonNull
 @NonNull tech.ydb.yoj.repository.db.EntitySchema<T> schema)

Specified by:

toYql in interface YqlStatementPart<YqlLimit>

combine

public List<? extends YqlStatementPart<?>> combine(@NonNull
 @NonNull List<? extends YqlLimit> other)

Specified by:

combine in interface YqlStatementPart<YqlLimit>

toString

public String toString()

Overrides:

toString in class Object