ObjectDB Database Search

Wondering if it's possible to add the activation code either: - in persistence.xml - or in a .env file - or system properties dmoshal David Moshal These options are not supported. However, you can embed the configuration file with the activation code as a resource, e.g. by replacing the objectdb

classloader? If one or both are possible, could you please give some examples? Thanks a lot! itsme Martin

I found the message: Error opening zip file or JAR manifest missing: /E:/projects/ObjectDB/bin/objectdb.jar Some of projects can read the DB, but others can not read or write the DB. Exception in ... more Error opening zip file or JAR manifest missing: /E:/projects/ObjectDB/bin/objectdb.jar

(for desktop version) and python or php for the web version but i want to code queries in native java ... to mariadb or mysql using native java JPA API and in some cases JPQL or must i store to an Objectdb unique ... . You cannot use to write to MySQL or MariaDB (as you cannot use PostgreSQL to write to MySQL). You can use

the persistance.xml or is something in the spring is doing something I don't understand? Or have I missed ... " is called, the object is being lazy loaded. So if the "equals" or "hashcode" method use more than the database id for generation or comparison, it all fails horribly. Have a look at the output from

); Predicate ownerIsNull = cb.isNull(root.get("owner")); Predicate ownerMatchesOrIsNull = cb. or (ownerIsNull, isOwnedByUser); The isNull predicate will only match records when NOT inside the OR predicate.  The other predicate works normally within or outside the OR . bhamilton Bruce Hamilton Your query

operand: select a from Action a where (a.state = 2 or a.state = 3) and a.type = 0 and a.transferred = 0 if the query is changed to select a from Action a where (a.state = 3 or a.state = 2) and a.type = 0 and a.transferred = 0 there are all the results for the condition a.state = 3 it seems that the or

A where another is null OR another.counter = 0 "  What I expected to get where the 2 entities I ... : SELECT FROM A WHERE another IS NULL OR another.counter = 0 is a short form of the this equivalent query: SELECT a FROM A a JOIN a.another b WHERE a.another IS NULL OR b.counter = 0 You missed

Hi, thanks very much for your helpful software. The problem is the storage of collection or ... there is no known open bug that can cause this problem (including in using or not using generics ... is we confirm that the collection or map are stored successfully by using explorer tools when the JVM

). Can you analyze the problem and tell us if its a problem of the explorer or a real problem in ... to open the Tree or Table Window for com.btc.ep.analysis.test.bl.internal.dmos ... ) available in the the classpath (either in the Explorer or using your application) in order to update

ObjectValue are just deleted from the database. If I had detailled traces of the EntityManager or ... IDs available on persist, or flush after persist to get IDs allocated. It is unclear ... relationship. If an update is not detected (e.g. due to 3 or 4) - you may try changing another (even dummy

Besides the em.remove() one by one, is there a function of "drop table" or "delete from table ... MyEntity e").executeUpdate();” works, but it can not reset id to zero! "drop table" or "delete from table" or "truncate" can clear the id counting. Any idea? gzdillon Lai Yang Resetting generated ID

.ClassFormatError: Absent Code attribute in method that is not native or abstract in class file javax ... ideas on the runtime error, or how I could reduce amount of code to map UI to a database to as ... somehow. This may exist, and I just don't get it, or whatever. And second, the idea of persisting interface

Hi, Is it ok to put list or map of embeddable objects in entity? I mean, for example : @Entity ... part of the containing entity. Since there is no separate space allocation for the collection or its elements ... happening... Is that a bug or are cascade operations not supported with Embeddable classes ? kborkowski

are redundant. Q: Is there an option or strategy to disable/skip runtime enhancement checks (to improve load time ) ?     webel Dr Darren Kelly Please provide more information about these checks, such as log messages or stack traces. support Support

I've got this DAO in my Spring App import javax.transaction.Transactional; @Repository // or @Component @Transactional public class LanguageRepository { // Injected database connection ... (); return guest; } //DELETE or UPDATE command public boolean deleteOrUpdate(String query, Map map

I am getting following error when i am trying to connect to server: [com.objectdb.o._PersistenceException: Login Error (bad username 'admin' or password)] with root cause com.objectdb.o.UserException: Login Error (bad username 'admin' or password) at com.objectdb.o.MSG.d(MSG.java:61) at com

hello , i heard its very good and new datastructure known as waterfall tree compared to btree. It could be good if you think and research some datastructure or take a look at waterfalltree Or it can be selectable by objectdb :   here what i talk about :  http://stsdb.com/stsdb-w4.0

and other files: Annotations not supported in -source1.3 (use -source 5 or higher ..) Generics not supported in -source1.3 (use -source 5 or higher ..) (Note that the version of Java I ran Maven as

.  Are there strong JPA-like libraries for Scala, or should I be considering Scala-specific persistence or using Java for the domain to take advantage of JPA / ObjectDB etc. All input greatly

- JPQL / SQL Set 2 - Java / JDO Less Than Less Than or Equal To = Equal = == Not Equal ... are always evaluated to TRUE , FALSE or NULL . When both operands are not NULL (not shown in the table) the operator is evaluated to either TRUE or FALSE , and in that case, == is equivalent to = and != is equivalent

the EntityManagerFactory 's getCriteriaBuilder method or by the  EntityManager 's getCriteriaBuilder method ... method takes a Parameter ( or a ParameterExpression ) instance as the first argument instead of a name or a position (which are used with string based JPQL parameters ). Criteria Query Structure Queries

are extracted from ( or projected out of) entity objects to form the query results. The results ... that update or delete entity objects, in which managed entity objects are needed. Managed entity ... to using select with one of the factory methods ( array , tuple or construct ) as demonstrated

these interfaces to build and run JPQL queries. The TypedQuery interface ( or alternatively the older Query ... a TypedQuery or a Query instance. Building a dynamic query using the criteria API is managed by the  ... the EntityManagerFactory 's getCriteriaBuilder method or by the  EntityManager 's

or convert objects to records/records to objects using SQL or ORM, as opposed to when using relational database systems (RDBMS), such as Oracle, DB2, SQL Server or MySQL.

can also be enabled or disabled using a persistence unit property:         ... explicitly. For example: @Cacheable // or @Cacheable(true) @Entity public class ... when the database might be updated by other applications ( or using other EntityManagerFactory instances

Requirements Windows, Linux, Unix, Mac OS, and most other OS with Java support. Java 8 or higher Tested ... API - any user with some experience with Hibernate, TopLink, EclipseLink, OpenJPA, JPOX or ... - a single @Id field. Composite primary key - multiple @Id fields or a @EmbeddedId field

is "true" or "false" ) specifies if the user is a superuser. A superuser is authorized to manage ... ;          Every element may contain one or more subelements ... is still allowed to view the directory content (using the Explorer) but cannot open database files or modify

method takes a variable number of  Order instances as arguments ( or a list of Order ... , which adds order direction - either ascending (ASC) or descending (DESC). The CriteriaBuilder 's asc and desc methods (which are demonstrated above) take an expression and return an ascending or descending Order instance (respectively).

The following code doesn't respect the logical " or " correctly. Instead of returns all 2 datasets it returns only this one, which matches the first predicate in the or . BUT: this happens only, if the field for the " or " is the first one defined as @Id. public class OrTest {     

. ORS .Z9()" because " " is null at com.objectdb.o.MSG.a(MSG.java:77) at com.objectdb.jpa.EMImpl.commit ... :833) Caused by: java.lang.NullPointerException: Cannot invoke "com.objectdb.o. ORS .Z9 ... : (No such file or directory) at java.base/java.io.RandomAccessFile.open0(Native Method) at java.base

, [NOT] MEMBER [OF] and the [NOT] LIKE operator. Logical operators : AND, OR , NOT. In addition, JPA ... ( equal , notEqual , gt , ge , lt , le , between , isNull , ...) Logical expressions ( and , or , not , isTrue ).

ObjectDB requires Java 8 or later. As a pure Java application, ObjectDB should be able to run on any platform that supports the Java Standard Edition. Either the Java Development Kit (JDK) or the Java Runtime Environment (JRE) can be used. A version of ObjectDB for .NET is currently under development.

. JPQL keywords, for example, can appear in queries either in upper case (e.g. SELECT) or in lower ... declares one or more query variables (also known as identification variables). Query variables

, which is always a positive number or zero. For example: ABS(-5) is evaluated to 5 ABS(10.7) is evaluated ... must be a criteria numeric expression. The other operand may be either another numeric expression or a simple

to exactly one entity class or mapped superclass - usually to the most relevant entity class ... queries. Notice that named queries may be attached to any entity class or mapped superclass

ObjectDB is distributed as a zip file. Just download and extract the ObjectDB distribution zip file. No need to run any install or setup program. You can uninstall ObjectDB by deleting the ObjectDB directory. ObjectDB does not modify the registry or any other system file.

of a relational database is mandatory (e.g. as a result of a customer request or when a new application ... performance and use a JPA ORM provider (Hibernate, TopLink, EclipseLink or DataNucleus) to access relational

) and selecting New Entity Class ... ( or New Other... Persistence Entity Class and clicking Next ). Enter ... clicking and selecting Edit or by double click and then moving to the Source or XML tab in

NetBeans - using JPA, ObjectDB, Tomcat ( or GlassFish) and Maven. The demo web application ... the following software: Java JDK 6.0 ( or above). NetBeans (Java or All bundle). The tutorial

Eclipse - using ObjectDB, JPA, Tomcat ( or GlassFish) and Maven. The demo web application manages ... the following software: Java JDK 6.0 ( or above). Eclipse IDE for Java EE Developers. m2eclipse

The  JPA Web Application tutorial provides step by step instructions on how to build a simple Java/JPA database driven web application (for Tomcat / Jetty) in  Eclipse or   NetBeans ... and install ObjectDB or a Java web server - Maven will download the ObjectDB jar and the Jetty

Project . Run the project: Select Run Run Main Project... ( or F6 ). Choose or define the server and click

a ServletContextListener to perform initialization and cleanup operations: The database will be opened ( or ... . The database will be closed when the web application stops ( or when the web server shuts down), by

. For this tutorial, besides the Java JDK (8 or above) and the Eclipse IDE (either Eclipse IDE for Java EE Developers or Eclipse IDE for Java Developers), you only need to download and extract the ObjectDB

you will need the following software: Java JDK (6.0 or above). NetBeans - Java or All bundle The last version

(session beans) it requires a full Java EE 6 application server, such as GlassFish 3.0.1 or JBoss AS 6. If you need a web application that can run on a simple servlet container (such as Tomcat or Jetty

and click  Open Project . Run the project: Select  Run Run Main Project... ( or   F6 ). Choose or define the server and click  OK . If  a browser is not opened - open it at http://localhost:8080/Guestbook/.

// Create or open a database and begin a transaction: 12 PersistenceManager pm = 13 Utilities ... a metadata file named either package.jdo (generic name) or Person.jdo (name of the class). More details ... iteration is reached it is recommended to use closeAll() (line 44) or close( ... ) to release resources

The following types can be used to implement external listener classes for JDO lifecycle events: Listener objects can be bound to one or more persistence capable classes by invoking the addInstanceLifecycleListner method either at the PersistenceManagerFactory level or the PersistenceManager level.