Package com.querydsl.sql.postgresql

Class PostgreSQLQueryFactory

java.lang.Object

com.querydsl.sql.AbstractSQLQueryFactory<PostgreSQLQuery<?>>

com.querydsl.sql.postgresql.PostgreSQLQueryFactory

All Implemented Interfaces:

QueryFactory<PostgreSQLQuery<?>>, SQLCommonQueryFactory<PostgreSQLQuery<?>,SQLDeleteClause,SQLUpdateClause,SQLInsertClause,SQLMergeClause>

public class PostgreSQLQueryFactory
extends AbstractSQLQueryFactory<PostgreSQLQuery<?>>

PostgreSQL specific implementation of SQLQueryFactory

Author:

tiwe

Field Summary

Fields inherited from class com.querydsl.sql.AbstractSQLQueryFactory

configuration, connection

Constructor Summary

Constructors

Constructor	Description
PostgreSQLQueryFactory(Configuration configuration, Supplier<Connection> connection)
PostgreSQLQueryFactory(SQLTemplates templates, Supplier<Connection> connection)
PostgreSQLQueryFactory(Supplier<Connection> connection)

Method Summary

Modifier and Type	Method	Description
PostgreSQLQuery<?>	query()
PostgreSQLQuery<Tuple>	select(Expression<?>... exprs)	Create a new SQL query with the given projection
<T> PostgreSQLQuery<T>	select(Expression<T> expr)	Create a new SQL query with the given projection
PostgreSQLQuery<Tuple>	selectDistinct(Expression<?>... exprs)	Create a new SQL query with the given projection
<T> PostgreSQLQuery<T>	selectDistinct(Expression<T> expr)	Create a new SQL query with the given projection
<T> PostgreSQLQuery<T>	selectFrom(RelationalPath<T> expr)	Create a new SQL query with the given projection and source
PostgreSQLQuery<Integer>	selectOne()	Create a new SQL query with one as the projection
PostgreSQLQuery<Integer>	selectZero()	Create a new SQL query with zero as the projection

Methods inherited from class com.querydsl.sql.AbstractSQLQueryFactory

delete, from, from, from, getConfiguration, getConnection, insert, merge, update

Methods inherited from class java.lang.Object

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

Constructor Details

PostgreSQLQueryFactory

public PostgreSQLQueryFactory(Configuration configuration,
 Supplier<Connection> connection)

PostgreSQLQueryFactory

public PostgreSQLQueryFactory(Supplier<Connection> connection)

PostgreSQLQueryFactory

public PostgreSQLQueryFactory(SQLTemplates templates,
 Supplier<Connection> connection)

Method Details

query

public PostgreSQLQuery<?> query()

select

public <T> PostgreSQLQuery<T> select(Expression<T> expr)

Description copied from class: AbstractSQLQueryFactory

Create a new SQL query with the given projection

Specified by:

select in class AbstractSQLQueryFactory<PostgreSQLQuery<?>>

Type Parameters:

T - type of the projection

Parameters:

expr - projection

Returns:

select(expr)

select

public PostgreSQLQuery<Tuple> select(Expression<?>... exprs)

Description copied from class: AbstractSQLQueryFactory

Create a new SQL query with the given projection

Specified by:

select in class AbstractSQLQueryFactory<PostgreSQLQuery<?>>

Parameters:

exprs - projection

Returns:

select(exprs)

selectDistinct

public <T> PostgreSQLQuery<T> selectDistinct(Expression<T> expr)

Description copied from class: AbstractSQLQueryFactory

Create a new SQL query with the given projection

Specified by:

selectDistinct in class AbstractSQLQueryFactory<PostgreSQLQuery<?>>

Type Parameters:

T - type of the projection

Parameters:

expr - distinct projection

Returns:

select(distinct expr)

selectDistinct

public PostgreSQLQuery<Tuple> selectDistinct(Expression<?>... exprs)

Description copied from class: AbstractSQLQueryFactory

Create a new SQL query with the given projection

Specified by:

selectDistinct in class AbstractSQLQueryFactory<PostgreSQLQuery<?>>

Parameters:

exprs - distinct projection

Returns:

select(distinct exprs)

selectZero

public PostgreSQLQuery<Integer> selectZero()

Description copied from class: AbstractSQLQueryFactory

Create a new SQL query with zero as the projection

Specified by:

selectZero in class AbstractSQLQueryFactory<PostgreSQLQuery<?>>

Returns:

select(0)

selectOne

public PostgreSQLQuery<Integer> selectOne()

Description copied from class: AbstractSQLQueryFactory

Create a new SQL query with one as the projection

Specified by:

selectOne in class AbstractSQLQueryFactory<PostgreSQLQuery<?>>

Returns:

select(1)

selectFrom

public <T> PostgreSQLQuery<T> selectFrom(RelationalPath<T> expr)

Description copied from class: AbstractSQLQueryFactory

Create a new SQL query with the given projection and source

Specified by:

selectFrom in class AbstractSQLQueryFactory<PostgreSQLQuery<?>>

Type Parameters:

T - type of the projection

Parameters:

expr - query source and projection

Returns:

select(expr).from(expr)