org.jooq
Interface SelectForUpdateStep

All Superinterfaces:

Adapter, Attachable, FieldLike, FieldProvider, Query, QueryPart, ResultQuery<Record>, Select<Record>, SelectFinalStep, Serializable, TableLike<Record>

All Known Subinterfaces:

SelectConditionStep, SelectConnectByConditionStep, SelectConnectByStep, SelectFromStep, SelectGroupByStep, SelectHavingConditionStep, SelectHavingStep, SelectJoinStep, SelectLimitStep, SelectOffsetStep, SelectOnConditionStep, SelectOrderByStep, SelectSelectStep, SelectStartWithStep, SelectWhereStep

public interface SelectForUpdateStep
extends SelectFinalStep

This type is used for the Select's DSL API when selecting generic Record types.

Example:

 -- get all authors' first and last names, and the number
 -- of books they've written in German, if they have written
 -- more than five books in German in the last three years
 -- (from 2011), and sort those authors by last names
 -- limiting results to the second and third row

   SELECT T_AUTHOR.FIRST_NAME, T_AUTHOR.LAST_NAME, COUNT(*)
     FROM T_AUTHOR
     JOIN T_BOOK ON T_AUTHOR.ID = T_BOOK.AUTHOR_ID
    WHERE T_BOOK.LANGUAGE = 'DE'
      AND T_BOOK.PUBLISHED > '2008-01-01'
 GROUP BY T_AUTHOR.FIRST_NAME, T_AUTHOR.LAST_NAME
   HAVING COUNT(*) > 5
 ORDER BY T_AUTHOR.LAST_NAME ASC NULLS FIRST
    LIMIT 2
   OFFSET 1
      FOR UPDATE
       OF FIRST_NAME, LAST_NAME
       NO WAIT
 

Its equivalent in jOOQ

 create.select(TAuthor.FIRST_NAME, TAuthor.LAST_NAME, create.count())
       .from(T_AUTHOR)
       .join(T_BOOK).on(TBook.AUTHOR_ID.equal(TAuthor.ID))
       .where(TBook.LANGUAGE.equal("DE"))
       .and(TBook.PUBLISHED.greaterThan(parseDate('2008-01-01')))
       .groupBy(TAuthor.FIRST_NAME, TAuthor.LAST_NAME)
       .having(create.count().greaterThan(5))
       .orderBy(TAuthor.LAST_NAME.asc().nullsFirst())
       .limit(2)
       .offset(1)
       .forUpdate()
       .of(TAuthor.FIRST_NAME, TAuthor.LAST_NAME)
       .noWait();
 

Refer to the manual for more details

Author:

Lukas Eder

Method Summary

SelectFinalStep	forShare() Add a FOR SHARE clause to the end of the query.
SelectForUpdateOfStep	forUpdate() Add a FOR UPDATE clause to the end of the query.

Methods inherited from interface org.jooq.SelectFinalStep

getQuery

Methods inherited from interface org.jooq.Select

except, getSelect, intersect, union, unionAll

Methods inherited from interface org.jooq.ResultQuery

bind, bind, fetch, fetch, fetch, fetch, fetch, fetch, fetch, fetch, fetch, fetch, fetchAny, fetchArray, fetchArray, fetchArray, fetchArray, fetchArray, fetchArray, fetchArray, fetchArray, fetchArray, fetchArrays, fetchInto, fetchInto, fetchInto, fetchLater, fetchLater, fetchLazy, fetchLazy, fetchMany, fetchMap, fetchMap, fetchMaps, fetchOne, fetchOne, fetchOne, fetchOne, fetchOne, fetchOne, fetchOne, fetchOne, fetchOne, fetchOne, fetchOneArray, fetchOneMap, fetchResultSet, getRecordType, getResult

Methods inherited from interface org.jooq.Query

execute, getBindValues, getParam, getParams, getSQL, getSQL

Methods inherited from interface org.jooq.Attachable

attach

Methods inherited from interface org.jooq.Adapter

internalAPI

Methods inherited from interface org.jooq.TableLike

asTable, asTable

Methods inherited from interface org.jooq.FieldLike

asField, asField

Methods inherited from interface org.jooq.FieldProvider

getField, getField, getField, getFields, getIndex

Method Detail

forUpdate

SelectForUpdateOfStep forUpdate()

Add a FOR UPDATE clause to the end of the query.

Note: not all SQL dialects allow for combining a FOR UPDATE clause with LIMIT .. OFFSET, or with GROUP BY. This essentially includes SQLDialect.INGRES and SQLDialect.ORACLE. These incompatibilities are not reflected by the jOOQ API.

See Also:

see LockProvider for more details

forShare

SelectFinalStep forShare()

Add a FOR SHARE clause to the end of the query.

See Also:

see LockProvider for more details