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. The select list of the query must contain only a single item, which must be assignable to the type ... resultClass - the type of the query result Returns: the new query instance Throws: IllegalArgumentException ... or if the query result is found to not be assignable to the specified type Since: JPA 2.0 Query


>>, Bindable, PluralAttribute,V> Instances of the type MapAttribute represent persistent java.util.Map-valued attributes. Since: JPA 2.0 Class getBindableJavaType() Return the Java type of the represented object. Return the Java type of the represented object. If the bindable type

JPA Miscellaneous

This section contains miscellaneous JPA types. The PersistenceUtil and PersistenceUnitUtil interfaces provide general utility methods: The Cache interface and the CacheRetrieveMode and CacheStoreMode enum types serve in managing the EntityManagerFactory's shared (level 2) cache: Other enum types are provided for setting of various JPA operations:

Entity Management Settings

") specifies whether the Enhancer Agent should be loaded to enhance persistable types on the fly ... for entities: The ref attribute specifies the reference type for holding non dirty entities in ... for instances of serializable types that are non persistable otherwise (e.g. a user defined class

Step 5: Add a JSP Page

import="guest.*"%> type="guest.GuestDao" scope="request" />
Name: type="text" name="name" /> type="submit" value="Add" />


Storing JPA Entity Objects

of other persistable types can only be stored in the database embedded in containing entities (as ... already contains another entity of the same type with the same primary key, an EntityExistsException ... ().commit(); Instances of persistable types other than entity classes are automatically stored

Privacy Policy for ObjectDB Software Ltd

is the privacy of our visitors. This Privacy Policy document contains types of information that is collected ... , browser type, Internet Service Provider (ISP), date and time stamp, referring/exit pages, and possibly ... type and/or other information. For more general information on cookies, please read "Cookies" article

JPA Criteria API Queries

); List results = query.getResultList(); Because eventually both types of queries ... , currentDate, ...). Paths, navigation and types (get, type). Arithmetic expressions (sum, diff, prod

Step 5: Add a JSP Page

" pageEncoding="ISO-8859-1"%> <%@page import="guest.*"%> type="guest.GuestDao ... "> Name: type="text" name="name" /> type="submit" value="Add


not support this use Since: JPA 2.0 Parameter getParameter(int position, Class type) Get the parameter object corresponding to the declared positional parameter with the given position and type ... and type. This method is not required to be supported by the provider. Parameters: position

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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