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Requirements Windows, Linux, Unix, Mac OS, and most other OS with Java support. Java 8 or higher Tested ... Database with built in support for  JPA 2 . Java Persistence API (JPA) Most features of JPA 2 ... ). Java Data Objects (JDO) Complete JDO 2 support (passed the JDO 2 TCK). Support for JDO 3 new

Literals in JPQL, as in Java , represent constant values. JPQL supports various types of literals ... to null in Java and SQL. Since JPQL is case insensitive, NULL , null and Null are equivalent. Notice that comparison with NULL in JPQL follows the SQL rules for NULL comparison rather than the Java

Server tool is bundled in the objectdb.jar file. You can run it from the command line as follows: java ... : ObjectDB Server [version 2.8.0] Copyright (c) 2019, ObjectDB Software, All rights reserved. Usage: java ... the server, use the start command line argument: java com.objectdb.Server start The Server

(usually a persistent class) A filter, which is a boolean expression in a Java like syntax The query ... been done so already. The Result Collection The query result is represented by a java .util.Collection instance and managed like any ordinary Java collection. For example, the number of retrieved

the connection URL string. 8.1  Running an ObjectDB Server The ObjectDB server is a pure Java ... as a Java program You can run the server as a Java program from the command line, as so: java -cp /lib/odbse.jar com.objectdb.Server Or on Windows: java -cp \lib\odbse.jar com.objectdb.Server

. Aside from the requirements described above, a persistent class is like any other Java class ... , int , long , float and double . Selected classes in package java .lang : Boolean , Byte , Short , Character , Integer , Long , Float , Double , Number and String . Selected classes in package java

of a single source file, HelloWorld. java , containing a single class: 1 // A simple program that manages a list of strings in a database. 2 3 import java .util.*; 4 import javax.jdo.*; 5 import com ... statements are required: for Java collections (line 3), for JDO (line 4) and for ObjectDB extensions

ObjectDB for Java /JDO is a powerful Object Database Management System (ODBMS) written entirely in Java . It can efficiently handle a wide range of database sizes, from a few KBs to hundreds of GBs ... Compliant ObjectDB is compliant with the JDO ( Java Data Objects) standard, developed by Sun

with a transient modifier in the Java source (useful for defining fields as transient in serialization and persistent in JDO), or a field whose declared type is java .lang.Object or some interface, but holds ... a field that is persistent by default to transient, as an alternative to the Java transient modifier

databases.   9.1  Running the Explorer The Explorer is a pure Java GUI application. It is shipped as an executable jar that will run on any system with a Java 1.3 JRE or later installed ... the Explorer using the following command: java -jar c:\objectdb\lib\odbfe.jar If a database path