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

Class AsyncEntityQuery<E extends BaseEntity>

java.lang.Object

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

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

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

All Implemented Interfaces:

AsyncQueryable<E>, AsyncSingleQueryable<E>, Queryable<E>, SingleQueryable<E>

public class AsyncEntityQuery<E extends BaseEntity>
extends EntityQuery<E>
implements AsyncQueryable<E>

Author:

Collin Alpert

Field Summary

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

orderType

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

aliases, mapper, tableModule, type

Constructor Summary

Constructors

Constructor	Description
AsyncEntityQuery(java.lang.Class<E> type)	Constructor for creating a DQL statement for a given entity.

Method Summary

Modifier and Type	Method	Description
AsyncEntityQuery<E>	limit(int limit)	Limits the result of the rows returned to a maximum of the passed integer.
AsyncEntityQuery<E>	limit(int limit, int offset)	Limits the result of the rows returned to a maximum of the passed integer with an offset.
AsyncEntityQuery<E>	orderBy(OrderTypes orderType, com.github.collinalpert.lambda2sql.functions.SqlFunction<E,?> function)	Sets an ORDER BY clauses for the DQL statement with a sorting order option.
AsyncEntityQuery<E>	orderBy(OrderTypes orderType, com.github.collinalpert.lambda2sql.functions.SqlFunction<E,?>[] functions)	Sets multiple ORDER BY clauses for the DQL statement with a sorting order option.
AsyncEntityQuery<E>	orderBy(OrderTypes orderType, java.util.List<com.github.collinalpert.lambda2sql.functions.SqlFunction<E,?>> functions)	Sets multiple ORDER BY clauses for the DQL statement with a sorting order option.
AsyncEntityQuery<E>	orderBy(com.github.collinalpert.lambda2sql.functions.SqlFunction<E,?> function)	Sets an ORDER BY clauses for the DQL statement.
AsyncEntityQuery<E>	orderBy(com.github.collinalpert.lambda2sql.functions.SqlFunction<E,?>[] functions)	Sets multiple ORDER BY clauses for the DQL statement.
AsyncEntityQuery<E>	orderBy(java.util.List<com.github.collinalpert.lambda2sql.functions.SqlFunction<E,?>> functions)	Sets multiple ORDER BY clauses for the DQL statement.
AsyncEntityQuery<E>	orWhere(com.github.collinalpert.lambda2sql.functions.SqlPredicate<E> predicate)	Sets or appends an OR WHERE clause to the DQL statement.
<R> AsyncQueryable<R>	project(com.github.collinalpert.lambda2sql.functions.SqlFunction<E,R> projection)	Selects only a single column from a table.
AsyncEntityQuery<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.EntityQuery

toArray, toList, toStream

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.AsyncQueryable

toArrayAsync, toArrayAsync, toListAsync, toListAsync, toStreamAsync, toStreamAsync

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

firstAsync, firstAsync

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

toArray, toList, toStream

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

first, getQuery

Constructor Detail

AsyncEntityQuery

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

Constructor for creating a DQL statement for a given entity. This constructor should not be used directly, but through the DQL methods defined in the BaseService.

Parameters:

type - The entity to query.

Method Detail

where

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

Sets or appends a WHERE clause for the DQL statement.

Overrides:

where in class EntityQuery<E extends BaseEntity>

Parameters:

predicate - The predicate describing the WHERE clause.

Returns:

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

orWhere

public AsyncEntityQuery<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 EntityQuery<E extends BaseEntity>

Parameters:

predicate - The predicate describing the OR WHERE clause.

Returns:

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

orderBy

public AsyncEntityQuery<E> orderBy(com.github.collinalpert.lambda2sql.functions.SqlFunction<E,?> function)

Sets an ORDER BY clauses for the DQL statement.

Overrides:

orderBy in class EntityQuery<E extends BaseEntity>

Parameters:

function - The column to order by..

Returns:

This EntityQuery object, now with a ORDER BY clause.

orderBy

public AsyncEntityQuery<E> orderBy(com.github.collinalpert.lambda2sql.functions.SqlFunction<E,?>[] functions)

Sets multiple ORDER BY clauses for the DQL statement. The resulting ORDER BY statement will coalesce the passed columns.

Overrides:

orderBy in class EntityQuery<E extends BaseEntity>

Parameters:

functions - The columns to order by in a coalescing manner.

Returns:

This EntityQuery object, now with a coalesced ORDER BY clause.

orderBy

public AsyncEntityQuery<E> orderBy(java.util.List<com.github.collinalpert.lambda2sql.functions.SqlFunction<E,?>> functions)

Sets multiple ORDER BY clauses for the DQL statement. The resulting ORDER BY statement will coalesce the passed columns.

Overrides:

orderBy in class EntityQuery<E extends BaseEntity>

Parameters:

functions - The columns to order by in a coalescing manner.

Returns:

This EntityQuery object, now with a coalesced ORDER BY clause.

orderBy

public AsyncEntityQuery<E> orderBy(OrderTypes orderType,
                                   com.github.collinalpert.lambda2sql.functions.SqlFunction<E,?> function)

Sets an ORDER BY clauses for the DQL statement with a sorting order option.

Overrides:

orderBy in class EntityQuery<E extends BaseEntity>

Parameters:

orderType - The direction to order by. Can be either ascending or descending.

function - The column to order by.

Returns:

This EntityQuery object, now with a ORDER BY clause.

orderBy

public AsyncEntityQuery<E> orderBy(OrderTypes orderType,
                                   com.github.collinalpert.lambda2sql.functions.SqlFunction<E,?>[] functions)

Sets multiple ORDER BY clauses for the DQL statement with a sorting order option. The resulting ORDER BY statement will coalesce the passed columns.

Overrides:

orderBy in class EntityQuery<E extends BaseEntity>

Parameters:

orderType - The direction to order by. Can be either ascending or descending.

functions - The columns to order by in a coalescing manner.

Returns:

This EntityQuery object, now with a coalesced ORDER BY clause.

orderBy

public AsyncEntityQuery<E> orderBy(OrderTypes orderType,
                                   java.util.List<com.github.collinalpert.lambda2sql.functions.SqlFunction<E,?>> functions)

Sets multiple ORDER BY clauses for the DQL statement with a sorting order option. The resulting ORDER BY statement will coalesce the passed columns.

Overrides:

orderBy in class EntityQuery<E extends BaseEntity>

Parameters:

orderType - The direction to order by. Can be either ascending or descending.

functions - The columns to order by in a coalescing manner.

Returns:

This EntityQuery object, now with a coalesced ORDER BY clause.

limit

public AsyncEntityQuery<E> limit(int limit,
                                 int offset)

Limits the result of the rows returned to a maximum of the passed integer with an offset. For example, the call .limit(10, 5) would return the rows 6-15.

Overrides:

limit in class EntityQuery<E extends BaseEntity>

Parameters:

limit - The maximum of rows to be returned.

offset - The offset of the limit.

Returns:

This EntityQuery object, now with a LIMIT with an OFFSET.

limit

public AsyncEntityQuery<E> limit(int limit)

Limits the result of the rows returned to a maximum of the passed integer.

Overrides:

limit in class EntityQuery<E extends BaseEntity>

Parameters:

limit - The maximum of rows to be returned.

Returns:

This EntityQuery object, now with a LIMIT.

project

public <R> AsyncQueryable<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 EntityQuery<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.