ObjectDB Database Search

generated for that field. This is primarily intended for primary key fields but ObjectDB also supports this annotation for non-key numeric persistent fields as well. Several different value generation ... number generator for every database. This number generator is used to generate automatic object IDs

: The path attribute specifies a directory in which the temporary files are generated . The $temp prefix ... in embedded mode. Specifying an inactivity timeout may solve firewall related issues. In general ... the Explorer easier. The element General logging settings are specified in the element: The path

Automatically generated values are mainly useful for primary key fields, but are supported by ... can also reference a value generator , which is defined at the class level by using one of the following annotations: More details about automatic value generation are provided at the Generated Value section of the ObjectDB Manual.

Demonstrates how to use ObjectDB as a data source of the Business Intelligence and Reporting Tools (BIRT), open source report generator.

All about General JPA Tutorials in Java/JPA database - explanations, examples, references, links and related information.

JPA Annotation Attribute in javax.persistence.GeneratedValue String generator default "" (Optional) The name of the primary key generator to use as specified in the SequenceGenerator or TableGenerator annotation. Defaults to the id generator supplied by persistence provider. Since: JPA 1.0

and Truststore Files To use SSL you have to generate at least two files: A Keystore file that functions as a unique signature of your server. This file contains general details (such as a company name ... signature. This file is generated from the Keystore file by omitting the private key

keys and automatic sequential value generation . This is a very powerful feature of ObjectDB ... generation is discussed in detail in the Generated Values section. Application Set Primary Key ... value is not generated and the application is responsible to set a primary key by initializing

displays general information about the database and the bottom sub window displays a list ... : [ General ], [Fonts] and [Views]. The [ General ] Page The [ General ] page contains the following settings

- for use when exactly one result object is expected. Query.getResultList - for general use in any ... - for general use in any other case. In addition, the Query interface defines a method for running ... , but the version of Query returns a result list of a raw type (non generic ) instead of a parameterized ( generic

how the Service is used. Usage Data  refers to data collected automatically, either generated by ... ;with news, special offers and general information about other goods, services and events ... is generally retained for a shorter period of time, except when this data is used to strengthen

specify names of managed persistable classes (see below). The property elements specify general ... classes. However, it might be useful to register classes that define generators and named queries (by annotations). Otherwise, the generators and named queries are available only when the containing

default, the recording directory is generated in the directory that contains the database file ... all the recorded operations. The resulting database file is also generated in the recording directory as .odb ... 1000 are applied, the generated result file is expected to be 1000.odb .

). The java.util.Date and java.util.Calendar types, on the other hand, are generic and can represent ... dimensional arrays). Both generic (e.g. ArrayList ) and non generic (e.g. ArrayList ) collection

file is generated in the directory of the database file, but any other alternative path ... default, a recording subdirectory is generated in the directory of the database file, but any ... are generated by running the Activator utility: $ java -cp objectdb.jar com.objectdb.Activator from

fast - much faster than any other JPA solution. General Highly optimized code (as a result of many ... .lang.BigDecimal. Auto Value Generation Modes (for primary Key fields) Database IDs - automatic

: This page explains how ObjectDB configuration works in general . The Configuration Path By default ... " ... If a configuration file is not found default values are used. General Configuration Considerations The following

to compiled object code, generated documentation, and conversions to other media types. "Work" shall ... , if provided along with the Derivative Works; or, within a display generated by the Derivative Works

The GROUP BY clause enables grouping of query results. A JPQL query with a GROUP BY clause returns properties of generated groups instead of individual objects and fields. The position of a GROUP BY ... ) that are generated by the FROM clause iteration and pass the WHERE clause filtering (if any

sections in pages that describe query structure in general , including in the context of string based JPQL ... pages that describe expressions in general , including in the context of string based JPQL queries.

language. For step by step instructions on using BIRT with ObjectDB see the  Report Generation ... ) and click Next . Entry a JPQL or a JDOQL query and click Finish . See the Report Generation

above) is the path to the new database file to be generated by the ObjectDB Doctor.

The JPA Metamodel API provides the ability to examine the persistent object model and retrieve details on managed classes and persistent fields and properties, similarly to the ability that Java reflection provides for general Java types. The Metamodel Interface The main interface of the JPA

a generic java.lang.Object , as long as the type of the actual value at runtime is persistable (or null

class that it takes as a first argument (using generics ). An IllegalArgumentException is thrown

.TransactionRequiredException Exception Class Overview The root of the JPA exception class subtree is: General errors

OF SUCH DAMAGES. 7. GENERAL If any provision of this Agreement is invalid or unenforceable under applicable

The following interfaces are in use in representing general expressions in criteria queries: See the Query Expressions section for more details and examples.

to be able to generate an EntityManagerFactory . But when using ObjectDB you can either define a standard

primary keys and automatic sequential value generation . This is a very powerful feature of ObjectDB that is absent from other object oriented databases.

to JPA, which generally excels in its thin and simple API. There are 9 methods for setting parameters

are more generic and efficient because they can be compiled once and then run many times with different

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:

file automatically. You can change this behavior in "Tools | Options | General ". Opening a Remote ... general information about the database and the bottom sub window displays a list of root objects ... window in "Tools | Options | General | Display"). Additional information about working with viewer

In this step we will add the JSP that generates the guestbook page output: Open the [New JSP File] dialog box by right clicking the Web Pages node (in the [Projects] window) and selecting New JSP ... Guest Book Web Application Tutorial Name: The JSP generates the guestbook page output, which contains

In this step we will add the JSP that generates the guestbook page output: Open the [New JSP File] dialog box by right clicking the WebContent node (in the [Package Explorer] window), selecting ... generates the guestbook page output, which contains a simple form for signing the guestbook, followed by

In this step we will add the JSP that generates the guestbook page output: Open the [New JSP File] dialog box by right clicking the Web Pages node (in the [Projects] window) and selecting New JSP ... Guest Book Web Application Tutorial Name: The JSP generates the guestbook page output, which contains

the [Provider and Database] step just click Finish to generate a default persistence.xml file ... JPA persistence unit (with default settings) was generated in a persistence.xml file that was added

In this step we will add the JSP that generates the guestbook page output: Open the [New JSP File] dialog box by right clicking the WebContent node (in the [Package Explorer] window), selecting ... Tutorial Name: The JSP generates the guestbook page output, which contains a simple form for signing

In this step we will add the JSP that generates the guestbook HTML output: Open the [New JSP File] dialog box by right clicking the WEB-INF node under the Web Pages node (in the [Projects] window ... content: JPA Guestbook Web Application Tutorial Name: The JSP generates the guestbook page output

entity class. In the [Provider and Database] step click Finish to generate a default persistence.xml ... JPA persistence unit (with default settings) was generated in a persistence.xml file that was added

In this step we will add the JSP that generates the guestbook HTML output: Open the [New JSP File] dialog box by right clicking WEB-INF under src/main/webapp (in the [Package Explorer] window ... Tutorial Name: The JSP generates the guestbook page output, which contains a simple form for signing

. It always includes an root element with two sub elements, and . The sub element specifies general server settings ... you have to generate at least two files: A Keystore file that functions as a unique signature of your server. This file contains general details (such as a company name), an RSA private key

) When you run the application for the first time, a new ObjectDB database file is generated in the db sub

In this step we will add code to the Main class (that was generated with the project) in order to store Point objects in the database and then retrieve them from the database. Use copy and paste to replace the content of the Main class with the following content: package tutorial; import javax

, a new ObjectDB database file is generated in the db subdirectory under the ObjectDB installation

more generic . Parameter values are provided when the query is executed so that the same query ... ). Operators Comparison operators Comparison operators ( ==, !=, , = ) generate boolean expressions ... operators ( && , || , ! ) generate complex boolean expressions out of simpler boolean expressions

databases is more important than general portability to both object and relational databases. JPA

a metadata file named either package.jdo ( generic name) or Person.jdo (name of the class). More details

connection for every web request. In general , holding a database connection open for longer than necessary