JVM - collection.query.fetch()

Retrieve a page of results for a query. This is an alternative to collection.query.stream()

import io.nitric.Nitric;
import io.nitric.resources.CollectionPermission;
// A user class to store in the profiles collection
class User {
String name;
int age;
public User(String name, int age) {
this.name = name;
this.age = age;
}
}
public class Application {
public static void main(String[] args) {
var profiles = Nitric.INSTANCE.collection("profiles", User.class).with(CollectionPermission.Read);
var profilesQuery = profiles.query();
var results = profilesQuery.fetch();
Nitric.INSTANCE.run();
}
}

Examples

Paging through results from a query

import io.nitric.Nitric;
import io.nitric.resources.CollectionPermission;
class User {
String name;
int age;
public User(String name, int age) {
this.name = name;
this.age = age;
}
}
public class Application {
public static void main(String[] args) {
var profiles = Nitric.INSTANCE.collection("profiles", User.class).with(CollectionPermission.Read);
var profileQuery = profiles.query();
var results = profileQuery.fetch();
var pagingToken = results.getPagingToken();
do {
results.getDocuments().forEach((doc) -> {
System.out.println(doc.getContent());
});
if (pagingToken.size() > 0) {
results = profileQuery.pagingFrom(pagingToken).fetch();
pagingToken = results.getPagingToken();
}
} while (results.getPagingToken().size() > 0 && results.getDocuments().size() > 0);
Nitric.INSTANCE.run();
}
}

See also

Last updated on Jan 21, 2025