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Method javax.persistence.Query LockModeType getLockMode() Get the current lock mode for the query. Returns: lock mode Throws: IllegalStateException - if the query is found not to be a Java Persistence query language SELECT query or a Criteria API query Since: JPA 2.0


Method javax.persistence.Query int executeUpdate() Execute an update or delete statement. Returns ... Persistence query language SELECT statement or for a criteria query TransactionRequiredException - if there is no transaction QueryTimeoutException - if the statement execution exceeds the query timeout

getParameter(name, type)

Method javax.persistence.Query Parameter<T> getParameter( String name, Class<T> type ... is required to be supported for criteria queries only. Parameters: name - parameter name type - type ... not exist or is not assignable to the type IllegalStateException - if invoked on a native query or


Constructor javax.persistence.QueryTimeoutException QueryTimeoutException( Query query ) Constructs a new QueryTimeoutException exception with the specified query. Parameters: query - the query. Since: JPA 2.0

QueryTimeoutException(message, cause, query)

Constructor javax.persistence.QueryTimeoutException QueryTimeoutException( String message, Throwable cause, Query query ) Constructs a new QueryTimeoutException exception with the specified detail message, cause, and query. Parameters: message - the detail message. cause - the cause. query - the query. Since: JPA 2.0


Method javax.persistence.Query Query setFlushMode( FlushModeType flushMode ) Set the flush mode type to be used for the query execution. The flush mode type applies to the query regardless of the flush mode type in use for the entity manager. Parameters: flushMode - flush mode Returns: the same query instance Since: JPA 1.0

setHint(hintName, value)

Method javax.persistence.Query Query setHint( String hintName, Object value ) Set a query property or hint. The hints elements may be used to specify query properties and hints. Properties defined by ... for the property or hint Returns: the same query instance Throws: IllegalArgumentException - if the second


Method javax.persistence.Query Set<Parameter<?>> getParameters() Get the parameter objects corresponding to the declared parameters of the query. Returns empty set if the query has no parameters. This method is not required to be supported for native queries. Returns: set of the parameter objects


Method javax.jdo.Query void setIgnoreCache( boolean ignoreCache ) Set the ignoreCache option ... to create this Query. The ignoreCache option setting specifies whether the query should execute ... might be able to optimize the query execution by ignoring changed values in the cache. For optimistic


Method javax.jdo.Query void closeAll() Close all query results associated with this Query instance, and release all resources associated with them. The query results might have iterators open on them. Iterators associated with the query results are invalidated: they return false to hasNext() and throw NoSuchElementException to next(). Since: JDO 1.0

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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