Fast Object Database for Java - with JPA/JDO support

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18

Key.table

Annotation Element javax.jdo.annotations.Key String table Name of the table for the key. Returns: name of the table for the key Default value: "" Since: JDO 2.1
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Key.serialized

Annotation Element javax.jdo.annotations.Key String serialized Whether the key is to be stored serialized (into a single column of a join table). Returns: whether the key is to be stored serialized Default value: "" Since: JDO 2.1
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Key.mappedBy

Annotation Element javax.jdo.annotations.Key String mappedBy Name of a member in the value class where this key is stored. Returns: the name of a member in the value class where this key is stored Default value: "" Since: JDO 2.1
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Extension.key

Annotation Element javax.jdo.annotations.Extension String key The key for the extension (required). Returns: the key Since: JDO 2.1
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Key.generateForeignKey

Annotation Element javax.jdo.annotations.Key String generateForeignKey Generate or assume a foreign key constraint exists on the column or columns associated with this join. Specify "true" or "false". Returns: whether to generate or assume a foreign key constraint Default value: "" Since: JDO 2.1
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Key.foreignKey

Annotation Element javax.jdo.annotations.Key String foreignKey Name for a generated foreign key constraint. Returns: the name of the generated foreign key constraint Default value: "" Since: JDO 2.1
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newObjectIdInstance(pcClass, key)

Method javax.jdo.PersistenceManager Object newObjectIdInstance( Class pcClass, Object key ) This method returns an object id instance corresponding to the pcClass and key arguments. Parameters: pcClass - the Class of the persistence-capable instance key - for single-field identity, the parameter
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Key.embeddedMapping

Annotation Element javax.jdo.annotations.Key Embedded[] embeddedMapping The embedded mapping for the key. Returns: the embedded mapping for the key Default value: {} Since: JDO 2.1
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Key.embedded

Annotation Element javax.jdo.annotations.Key String embedded Whether this key is embedded. Returns: whether this key is embedded Default value: "" Since: JDO 2.1
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Key.dependent

Annotation Element javax.jdo.annotations.Key String dependent Whether the key is dependent on the owner (and will be deleted when the owner is deleted). Returns: whether the key is dependent on the owner Default value: "" Since: JDO 2.1

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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