ArangoDB v3.11 is under development and not released yet.

This documentation is not final and potentially incomplete.

Indexes

Indexes can be ensured using the following annotations. For reference see the indexing documentation and specific aspects that apply to indexes on shards.

Annotation @<IndexType>Indexed

With the @<IndexType>Indexed annotations user defined indexes can be created at a collection level by annotating single fields of a class.

Possible @<IndexType>Indexed annotations are:

  • @PersistentIndexed
  • @GeoIndexed
  • @FulltextIndexed
  • @TtlIndexed

The following example creates a persistent index on the field name and a separate persistent index on the field age:

public class Person {
  @PersistentIndexed
  private String name;

  @PersistentIndexed
  private int age;
}

With the @<IndexType>Indexed annotations different indexes can be created on the same field.

The following example creates a TTL index and also a persistent index on the field name:

public class Person {
  @TtlIndexed
  @PersistentIndexed
  private String name;
}

Annotation @<IndexType>Index

If the index should include multiple fields the @<IndexType>Index annotations can be used on the type instead.

Possible @<IndexType>Index annotations are:

  • @PersistentIndex
  • @GeoIndex
  • @FulltextIndex
  • @TtlIndex

The following example creates a single persistent index on the fields name and age, note that if a field is renamed in the database with @Field, the new field name must be used in the index declaration:

@PersistentIndex(fields = {"fullname", "age"})
public class Person {
  @Field("fullname")
  private String name;

  private int age;
}

The @<IndexType>Index annotations can also be used to create an index on a nested field.

The following example creates a single persistent index on the fields name and address.country:

@PersistentIndex(fields = {"name", "address.country"})
public class Person {
  private String name;

  private Address address;
}

The @<IndexType>Index annotations and the @<IndexType>Indexed annotations can be used at the same time in one class.

The following example creates a persistent index on the fields name and age and a separate persistent index on the field age:

@PersistentIndex(fields = {"name", "age"})
public class Person {
  private String name;

  @PersistentIndexed
  private int age;
}

The @<IndexType>Index annotations can be used multiple times to create more than one index in this way.

The following example creates a persistent index on the fields name and age and a separate persistent index on the fields name and gender:

@PersistentIndex(fields = {"name", "age"})
@PersistentIndex(fields = {"name", "gender"})
public class Person {
  private String name;

  private int age;

  private Gender gender;
}