client/io.spine.client/QueryBuilder

QueryBuilder

public final class QueryBuilder extends TargetBuilder<T, B>

A builder for the Query instances.

None of the parameters set by the builder methods are required. Call build to retrieve the resulting Query instance.

Usage example:


ActorRequestFactory factory = ... ;
Query query = factory.query()
         .select(Customer.class)
         .byId(westCoastCustomerIds())
         .withMask("name", "address", "email")
         .where(eq("type", "permanent"),
                eq("discountPercent", 10),
                eq("companySize", Company.Size.SMALL))
         .orderBy("name", ASCENDING)
         .limit(20)
         .build();

Arguments for the where method can be composed using the Filters utility class.

See also

Functions

public Query build()

Generates a new Query instance with current builder configuration.

public QueryBuilder limit(int count)

Limits the number of results returned by the query.

public QueryBuilder orderBy(String column, Direction direction)

Sets the sorting order by the target column and order direction.

Inherited functions

public B byId(Array<Message> ids)

public B byId(Array<Integer> ids)

public B byId(Array<Long> ids)

public B byId(Array<String> ids)

Sets the ID predicate to the io.spine.client.

public B byId(Iterable<? extends Object> ids)

Sets the ID predicate to the targets of the request.

public String toString()

public B where(Array<CompositeFilter> predicate)

public B where(Array<Filter> predicate)

Sets the predicates for the io.spine.client.

public B withMask(Iterable<String> fieldNames)

public B withMask(Array<String> fieldNames)

Sets the entity fields to retrieve.