Fast Object Database for Java - with JPA/JDO support

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3

contains(cls, primaryKey)

Method javax.persistence.Cache boolean contains( Class cls, Object primaryKey ) Whether the cache contains data for the given entity. Parameters: cls - entity class primaryKey - primary key Returns: boolean indicating whether the entity is in the cache Since: JPA 2.0
3

IdClass.value

Annotation Element javax.persistence.IdClass Class value Primary key class Since: JPA 1.0
3

PrimaryKeyJoinColumn.columnDefinition

Annotation Element javax.persistence.PrimaryKeyJoinColumn String columnDefinition (Optional) The SQL fragment that is used when generating the DDL for the column. This should not be specified for a OneToOne primary key association. Defaults to the generated SQL to create a column of the inferred type. Default value: "" Since: JPA 1.0
3

Table.uniqueConstraints

annotations and constraints entailed by primary key mappings. Defaults to no additional constraints. Default value: {} Since: JPA 1.0
3

TemporalType injection with Calendar using JPA

object as a primary key, which has time fields which I have annotated with TemporalType.TIMESTAMP ... ,SECOND=43,MILLISECOND=31,ZONE_OFFSET=0,DST_OFFSET=3600000] ]) as a primary key (error 691) at com ... =43,MILLISECOND=31,ZONE_OFFSET=0,DST_OFFSET=3600000] ]) as a primary key at com.objectdb.o.MSG.d(MSG
3

again merger missing logs + objectdb exception

and has a wrapper key that consists of the original primary key of the object with additional ... have nested wrappers, i.e. a section key wrapper that wraps another section key wrapper that wraps the original primary key. This is an unexpected state. Unfortunately we cannot see how this could happen
3

InternalException when using MEMBER OF on a large list in a query

because of a bug in handling query results that combine large objects with long primary keys. In ... . Note that although the new build fixes the exception - storing large objects with long primary keys is not very efficient, because non embeddable keys are slower. If possible, try to avoid primary keys
3

javax.jdo.identity.ByteIdentity

pcClass, Byte key) Constructor with class and key. Constructor with class and key. Parameters: pcClass - the target class key - the key Since: JDO 1.0 ByteIdentity(Class pcClass, Byte key) Constructor with class and key. Constructor with class and key. Parameters: pcClass - the target class key
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javax.jdo.identity.IntIdentity

, int key) Constructor with class and key. Constructor with class and key. Parameters: pcClass - the class key - the key Since: JDO 1.0 IntIdentity(Class pcClass, String str) Constructor with class and key. Constructor with class and key. Parameters: pcClass - the class str - the key Since: JDO 1.0
3

javax.jdo.identity.LongIdentity

pcClass, Long key) Constructor with class and key. Constructor with class and key. Parameters: pcClass - the class key - the key Since: JDO 1.0 LongIdentity(Class pcClass, Long key) Constructor with class and key. Constructor with class and key. Parameters: pcClass - the class key - the key Since: JDO 1

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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