Module io.ebean.querybean

Package io.ebean.typequery

Interface TQAssocMany<T,R,QB>

Type Parameters:

T - The entity bean type

R - The root query bean type

public interface TQAssocMany<T,R,QB>

Expressions for Query Bean ToMany relationships.

Method Summary

Modifier and Type	Method	Description
R	filterMany(io.ebean.ExpressionList<T> filter)	Filter the beans fetched for this relationship.
R	filterMany(Consumer<QB> filter)	Filter the beans fetched for this relationship.
R	filterManyRaw(String rawExpressions, Object... params)	Add filter expressions for the many path.
R	isEmpty()	Is empty for a collection property.
R	isNotEmpty()	Is not empty for a collection property.

Method Details

filterMany

R filterMany(Consumer<QB> filter)

Filter the beans fetched for this relationship.

Parameters:

filter - The filter to apply

filterMany

R filterMany(io.ebean.ExpressionList<T> filter)

Filter the beans fetched for this relationship.

filterManyRaw

R filterManyRaw(String rawExpressions,
 Object... params)

Add filter expressions for the many path. The expressions can include SQL functions if desired and the property names are translated to column names.

The expressions can contain placeholders for bind values using ? or ?1 style.

     new QCustomer()
       .name.startsWith("Shrek")
       .contacts.filterManyRaw("status = ? and firstName like ?", Contact.Status.NEW, "Rob%")
       .findList();

 

Parameters:

rawExpressions - The raw expressions which can include ? and ?1 style bind parameter placeholders

params - The parameter values to bind

isEmpty

R isEmpty()

Is empty for a collection property.

This effectively adds a not exists sub-query on the collection property.

This expression only works on OneToMany and ManyToMany properties.

isNotEmpty

R isNotEmpty()

Is not empty for a collection property.

This effectively adds an exists sub-query on the collection property.

This expression only works on OneToMany and ManyToMany properties.