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toString()

Method javax.jdo.identity.ObjectIdentity String toString() Return the String form of the object id. The class of the object id is written as the first part of the result so that the class can be reconstructed later. Then the toString of the key instance is appended. During construction
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equals(obj)

Method javax.jdo.identity.ObjectIdentity boolean equals( Object obj ) Determine if the other object represents the same object id. Parameters: obj - the other object Returns: true if both objects represent the same object id Since: JDO 1.0
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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 ... id instance. Returns: an instance of the object identity class Since: JDO 1.0
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equals(obj)

Method javax.jdo.identity.ByteIdentity boolean equals( Object obj ) Determine if the other object represents the same object id. Parameters: obj - the other object Returns: true if both objects represent the same object id Since: JDO 1.0
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equals(obj)

Method javax.jdo.identity.CharIdentity boolean equals( Object obj ) Determine if the other object represents the same object id. Parameters: obj - the other object Returns: true if both objects represent the same object id Since: JDO 1.0
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javax.jdo.spi.PersistenceCapable.ObjectIdFieldConsumer

javax.jdo.spi Interface PersistenceCapable.ObjectIdFieldConsumer Subinterfaces: ObjectIdFieldManager This interface is used to store fields from the Object id instance. It is used by the method ... of ObjectIdFieldManager for each field in the object id. Since: JDO 1.0 void storeBooleanField(int fieldNumber
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jdoNewObjectIdInstance(o)

Method javax.jdo.spi.PersistenceCapable Object jdoNewObjectIdInstance( Object o ) Create a new instance of the class used for JDO identity, using the key constructor of the object id class ... . If the key is the wrong class for the object id class, null is returned. For classes that use single field
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copyKeyFieldsToObjectId(pcClass, fm, oid)

field in the ObjectId. For example, an ObjectId class that has three key fields (int id, String name ... , ObjectIdFieldSupplier fm) { oid.id = fm.fetchIntField (0); oid.name = fm.fetchStringField (1); oid
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copyKeyFieldsFromObjectId(pcClass, fm, oid)

key field in the ObjectId. For example, an ObjectId class that has three key fields ( int id, String ... (PersistenceCapable oid, ObjectIdFieldConsumer fm) { fm.storeIntField (0, oid.id); fm.storeStringField (1, oid
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javax.jdo.spi.Detachable

which the StateManager can set the object id, version, BitSet of loaded fields, and BitSet of modified fields ... of the Object[] jdoDetachedState is as follows: jdoDetachedState[0]: the Object Id of the instance

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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