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javax.persistence.QueryTimeoutException

the cause of this throwable or null if the cause is nonexistent or unknown. Returns the cause of this throwable or null if the cause is nonexistent or unknown. (The cause is the throwable that caused ... via one of the constructors requiring a Throwable, or that was set after creation with the initCause(Throwable
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javax.persistence.LockModeType

.persistence.EntityManager methods that take locks ( lock, find, or refresh) or to the Query.setLockMode() or TypedQuery.setLockMode() method. Lock modes can be used to specify either optimistic or ... that row and obtains the modified value, before T1 has committed or rolled back. Transaction T2
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javax.persistence.JoinColumn

a column for joining an entity association or element collection. If the JoinColumn annotation ... . If the join is for a OneToOne or ManyToOne mapping using a foreign key mapping strategy, the foreign key column is in the table of the source entity or embeddable. If the join is for a unidirectional
3

javax.persistence.OrderBy

the ordering of the elements of a collection valued association or element collection at the point when the association or collection is retrieved. The syntax of the value ordering element is an orderby_list, as follows: orderby_list::= orderby_item [,orderby_item]* orderby_item::= [property_or
0

javax.jdo.JDOReadOnlyException

in the sequence. Some virtual machines may, under some circumstances, omit one or more stack frames ... that is either generated by fillInStackTrace() when a throwable is constructed or deserialized when a throwable is read ... : NullPointerException - if stackTrace is null, or if any of the elements of stackTrace are null Since: Java 1.4
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javax.jdo.JDODetachedFieldAccessException

. Some virtual machines may, under some circumstances, omit one or more stack frames from the stack ... fillInStackTrace() when a throwable is constructed or deserialized when a throwable is read from ... - if stackTrace is null, or if any of the elements of stackTrace are null Since: Java 1.4 Throwable
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javax.jdo.JDOFatalInternalException

one or more stack frames from the stack trace. In the extreme case, a virtual machine ... that is either generated by fillInStackTrace() when a throwable is constructed or deserialized ... . Throws: NullPointerException - if stackTrace is null, or if any of the elements of stackTrace
0

javax.jdo.JDOFatalException

may, under some circumstances, omit one or more stack frames from the stack trace. In the extreme case ... is constructed or deserialized when a throwable is read from a serialization stream. Parameters: stackTrace ... on this Throwable's stack trace. Throws: NullPointerException - if stackTrace is null, or if any
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javax.jdo.JDOUserException

machines may, under some circumstances, omit one or more stack frames from the stack trace. In ... () when a throwable is constructed or deserialized when a throwable is read from a serialization stream ... will have no affect on this Throwable's stack trace. Throws: NullPointerException - if stackTrace is null, or
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javax.jdo.spi.JDOImplHelper

class. The registration will be done in the class named JDOImplHelper loaded by the same or an ancestor ... . Returns: The PersistenceCapable superclass for this class, or null if there isn't one. Since: JDO 1 ... which will own the new instance. Returns: the new instance, or null if the class is not registered

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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