Package com.github.collinalpert.java2db.queries.async

Class AsyncSingleEntityQuery<E extends BaseEntity>

java.lang.Object

com.github.collinalpert.java2db.queries.SingleEntityQuery<E>

com.github.collinalpert.java2db.queries.async.AsyncSingleEntityQuery<E>

All Implemented Interfaces:

AsyncSingleQueryable<E>, SingleQueryable<E>

public class AsyncSingleEntityQuery<E extends BaseEntity>
extends SingleEntityQuery<E>
implements AsyncSingleQueryable<E>

Author:

Collin Alpert

Field Summary

Fields inherited from class com.github.collinalpert.java2db.queries.SingleEntityQuery

aliases, mapper, tableModule, type

Constructor Summary

Constructors

Constructor	Description
AsyncSingleEntityQuery(java.lang.Class<E> type)

Method Summary

Modifier and Type	Method	Description
AsyncSingleEntityQuery<E>	orWhere(com.github.collinalpert.lambda2sql.functions.SqlPredicate<E> predicate)	Sets or appends an OR WHERE clause to the DQL statement.
<R> AsyncSingleQueryable<R>	project(com.github.collinalpert.lambda2sql.functions.SqlFunction<E,R> projection)	Selects only a single column from a table.
AsyncSingleEntityQuery<E>	where(com.github.collinalpert.lambda2sql.functions.SqlPredicate<E> predicate)	Sets or appends a WHERE clause for the DQL statement.

Methods inherited from class com.github.collinalpert.java2db.queries.SingleEntityQuery

buildWhereClause, first, getQuery, getTableName

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.github.collinalpert.java2db.queries.async.AsyncSingleQueryable

firstAsync, firstAsync

Methods inherited from interface com.github.collinalpert.java2db.queries.SingleQueryable

first, getQuery

Constructor Detail

AsyncSingleEntityQuery

public AsyncSingleEntityQuery(java.lang.Class<E> type)

Method Detail

where

public AsyncSingleEntityQuery<E> where(com.github.collinalpert.lambda2sql.functions.SqlPredicate<E> predicate)

Sets or appends a WHERE clause for the DQL statement.

Overrides:

where in class SingleEntityQuery<E extends BaseEntity>

Parameters:

predicate - The predicate describing the WHERE clause.

Returns:

This EntityQuery object, now with an (appended) WHERE clause.

orWhere

public AsyncSingleEntityQuery<E> orWhere(com.github.collinalpert.lambda2sql.functions.SqlPredicate<E> predicate)

Sets or appends an OR WHERE clause to the DQL statement.

Overrides:

orWhere in class SingleEntityQuery<E extends BaseEntity>

Parameters:

predicate - The predicate describing the OR WHERE clause.

Returns:

This EntityQuery object, now with an (appended) OR WHERE clause.

project

public <R> AsyncSingleQueryable<R> project(com.github.collinalpert.lambda2sql.functions.SqlFunction<E,R> projection)

Selects only a single column from a table. This is meant if you don't want to fetch an entire entity from the database.

Overrides:

project in class SingleEntityQuery<E extends BaseEntity>

Type Parameters:

R - The type of the column you want to retrieve.

Parameters:

projection - The column to project to.

Returns:

A queryable containing the projection.