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JDO Doc
11

javax.jdo.annotations.Value

2.1 String index The name of the index to generate. The name of the index to generate. Returns: the name of the index Default value: "" Since: JDO 2.1 String indexed Whether the value column(s) should be indexed. Whether the value column(s) should be indexed. Returns: whether the value column(s
JDO Doc
11

javax.jdo.annotations.Element

String index The name of the index to generate. The name of the index to generate. Returns: the name of the index Default value: "" Since: JDO 2.1 String indexed Whether the value column(s) should be indexed. Whether the value column(s) should be indexed. Returns: whether the value column(s
Forum
8

Unexpected exception during open the database

seems to be related to opening and closing the database for a short period, when indexes require ... {     ...     @Index     private String scopeID;     ... } if we remove the @Index annotation in ... . The automatic index update is not part of the objectdb.conf, this cannot be the reason.
Forum
8

Query becomes slower on moving from ObjectDB 1.x to ObjectDB 2.x

to get at least similar performance for this query with ObjectDB 2.x. Maybe an index is missing ... that you uploaded there is an index on field logEntryId, which is inactive. An inactive index is usually the result of adding a new index to an existing database, but it could be also some issue with the conversion
JPA Doc
7

javax.persistence.criteria.ListJoin

against Returns: predicate testing for membership Since: JPA 2.0 Expression index() Create an expression that corresponds to the index of the object in the referenced association or element collection. Create an expression that corresponds to the index of the object in the referenced association or
JDO Doc
7

javax.jdo.annotations.Discriminator

: "" Since: JDO 2.1 String indexed Whether the discriminator is indexed. Whether the discriminator is indexed. Returns: whether the discriminator is indexed Default value: "" Since: JDO 2.1
JDO Doc
7

javax.jdo.annotations.Version

: the vendor extensions Default value: {} Since: JDO 2.1 String indexed Whether the version column(s) is(are) indexed. Whether the version column(s) is(are) indexed. Returns: whether the version column(s) is(are) indexed Default value: "" Since: JDO 2.1 VersionStrategy strategy Strategy
Forum
6

Performance issues on aggregate query

associatedFileCurrentVersion;     public Date associatedFileLastModification; @Index public String classIdentifier ... >(); public String customIcon; @Index public String fileURL; @Index public String foreignUuid; @Index ... ; @Index public Date modified; @Index public String nodePath; @Index public String objectName; @Index
Forum
6

Queries are slow on a large database

needs 4 to 5 minutes to return a result. I have been adviced to use indexes ... :     
Forum
5

What role is the JDO in ObjectDB?

about JDO and JPA in ObjectDB. Thanks for your reply. I found a flaw in JPA that the @Index can not be used. These is an example in ObjectDB which used @Index, I traced it to the JDO lib. So if I want to make a index without SQL on database, then @Index is a mandatory function. Any suggestion