com.querydsl.core.support

Class QueryBase<Q extends QueryBase<Q>>

java.lang.Object

com.querydsl.core.support.QueryBase<Q>

Type Parameters:

Q - concrete subtype

Direct Known Subclasses:

FetchableQueryBase

public abstract class QueryBase<Q extends QueryBase<Q>>
extends Object

QueryBase provides a stub for Query implementations

Author:

tiwe

Field Summary

Fields

Modifier and Type	Field and Description
static String	MDC_PARAMETERS
static String	MDC_QUERY
protected QueryMixin<Q>	queryMixin

Constructor Summary

Constructors

Constructor and Description
QueryBase(QueryMixin<Q> queryMixin)

Method Summary

Modifier and Type	Method and Description
Q	distinct() Set the Query to return distinct results
boolean	equals(Object o)
Q	groupBy(Expression<?>... o) Add grouping/aggregation expressions
Q	groupBy(Expression<?> e) Add a single grouping expression
int	hashCode()
Q	having(Predicate... o) Add filters for aggregation
Q	having(Predicate e) Add a single filter for aggregation
Q	limit(long limit) Defines the limit / max results for the query results
Q	offset(long offset) Defines the offset for the query results
Q	orderBy(OrderSpecifier<?>... o) Add order expressions
Q	orderBy(OrderSpecifier<?> o) Add a single order expression
Q	restrict(QueryModifiers modifiers) Defines both limit and offset of the query results, use QueryModifiers.EMPTY to apply no paging.
<P> Q	set(ParamExpression<P> param, P value) Set the given parameter to the given value
String	toString()
Q	where(Predicate... o) Add the given filter conditions
Q	where(Predicate o) Add the given filter condition

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

MDC_QUERY

public static final String MDC_QUERY

See Also:

Constant Field Values

MDC_PARAMETERS

public static final String MDC_PARAMETERS

See Also:

Constant Field Values

queryMixin

protected final QueryMixin<Q extends QueryBase<Q>> queryMixin

Constructor Detail

QueryBase

public QueryBase(QueryMixin<Q> queryMixin)

Method Detail

distinct

public Q distinct()

Set the Query to return distinct results

Returns:

the current object

groupBy

public Q groupBy(Expression<?> e)

Add a single grouping expression

Parameters:

e - group by expression

Returns:

the current object

groupBy

public Q groupBy(Expression<?>... o)

Add grouping/aggregation expressions

Parameters:

o - group by expressions

Returns:

the current object

having

public Q having(Predicate e)

Add a single filter for aggregation

Parameters:

e - having condition

Returns:

the current object

having

public Q having(Predicate... o)

Add filters for aggregation

Parameters:

o - having conditions

Returns:

the current object

orderBy

public Q orderBy(OrderSpecifier<?> o)

Add a single order expression

Parameters:

o - order

Returns:

the current object

orderBy

public Q orderBy(OrderSpecifier<?>... o)

Add order expressions

Parameters:

o - order

Returns:

the current object

where

public Q where(Predicate o)

Add the given filter condition

Skips null arguments

Parameters:

o - filter conditions to be added

Returns:

the current object

where

public Q where(Predicate... o)

Add the given filter conditions

Skips null arguments

Parameters:

o - filter conditions to be added

Returns:

the current object

limit

public Q limit(@Nonnegative
               long limit)

Defines the limit / max results for the query results

Parameters:

limit - max rows

Returns:

the current object

offset

public Q offset(long offset)

Defines the offset for the query results

Parameters:

offset - row offset

Returns:

the current object

restrict

public Q restrict(QueryModifiers modifiers)

Defines both limit and offset of the query results, use QueryModifiers.EMPTY to apply no paging.

Parameters:

modifiers - query modifiers

Returns:

the current object

set

public <P> Q set(ParamExpression<P> param,
                 P value)

Set the given parameter to the given value

Type Parameters:

P -

Parameters:

param - param

value - binding

Returns:

the current object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object