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objectdb database from multiple system  prateek Prateek gupta In embedded mode the database file ... database access from multiple processes.   support Support ok i got it but can you plz send ... multiple system it shows failed to connect to server       prateek Prateek gupta

Hi! I've just started to architect a new system, stateless JSON API, which is expected to have very high load and to require more servers for parallel deployments (same app across multiple servers). I am considering using ObjectDB, because of its advantages and easy usage, but I'm afraid

, so indeed, for a unique field you cannot have more than one  null value. If you need multiple null values then 

; not supporting multiple system prateek Prateek gupta

Issue with orphanRemoval and multiple EntityManagers

CriteriaQuery .where() for multiple conditions

Multiple Collection Fields not update correctly

multiple different applications access one odb file

Get multiple entities by Id

multiple LEFT JOINs do not work as expected

100% CPU when using multiple BETWEEN

Access to client/server database from multiple applications

Maven and multiple JARs

InternalError on multiple AND and JOIN Query

on more than one persistent field. It is defined by specifying multiple fields in the members attribute ... to either the class or to any persistent field in the class. Multiple @Index annotations can be wrapped ... firstName; String lastName; } Similarly, the @Uniques annotation can wrap multiple @Unique annotations. As

for the same event. However, the same method may be used for multiple callback events by marking ... annotation: @Entity @EntityListeners (MyListener.class) public class MyEntityWithListener { } Multiple ... multiple listeners) the invocation order is based on the following rules: All the external callback

the command line. Every machine requires a specific activation code, but multiple elements can be specified in the same configuration. This way the same configuration file (with multiple activation codes) can be used on multiple machines. Note: If you are using an ObjectDB OEM license

to them when a transaction is active are not propagated to the database. Multiple SELECT Expressions ... with multiple SELECT expressions, where custom result objects can provide an object oriented ... - multiselect , which takes a variable number of arguments representing multiple selections, and builds a 

name annotation element. Multiple range variables are allowed. For example, the following query ... WHERE c2 MEMBER OF c1.neighbors Multiple variables are equivalent to nested loops in a program ... is required when using multiple range variables. Iteration over about 1,000,000 database objects

that ability and require multiple tables, multiple records and join operations in order to support multiple values (even for a simple data structure such as a collection of strings). In addition

Query parameters enable the definition of reusable queries. Such queries can be executed with different parameter values to retrieve different results. Running the same query multiple times ... . Queries can include multiple parameters, and each parameter can occur multiple times in the query

that embedded objects cannot be shared by multiple entity objects. Each containing entity object ... that field ( multiple entity objects can be referenced by a collection field): @Entity class Employee

objects that are referenced by that field ( multiple entity objects can be referenced by a collection ... automatically to entity objects that are referenced by that field ( multiple entity objects

only once even if they are referenced multiple times. Referencing instances of other persistable types from multiple persistent fields  would cause data duplication in the database. Entity Classes An entity

binary operators:   + (addition), - (subtraction), * ( multiplication ) and / (division). ObjectDB ... Expression diff3 = cb. diff (1000, path); // number - expression // Multiplication (*) Expression

functionality for performing operations on a database. Many applications require multiple database ... . a pool of sockets), provides an efficient way to construct multiple EntityManager instances

should be ran using the getResultList method, as we expect to receive multiple objects in return ... contains multiple Country objects with the name 'Canada' (e.g. due to a bug

of Expression , any criteria expression  can be used as the SELECT clause content. Multiple ... multi selection results (i.e. results of a query with multiple expressions in the SELECT clause) using

variable (with or without an explicit variable name) for iteration. Multiple variables and JOIN are not ... variable name - if defined). Multiple field update expressions, separated by commas, are also allowed

- a single @Id field. Composite primary key - multiple @Id fields or a @EmbeddedId field ... parameters for efficient reuse of one query in multiple executions. Result range settings (first

. Reference to an entity object. Composite Primary Key A composite primary key consists of multiple ... has multiple primary key fields, JPA requires defining a special ID class that is attached to the entity

automatic optimistic locking to prevent concurrent changes to entity objects by multiple users. JPA 2

ObjectDB supports master-slave replication (cluster). When replication (or clustering) is used, the same database is managed on multiple machines (nodes), possibly in different geographic locations. This could help in achieving high availability, fault tolerance and prompt disaster recovery. In

: * ( multiplication ), / (division), + (addition) and - (subtraction). Comparison operators

automatically to entity objects that are referenced by that field ( multiple entity objects

", query ="SELECT c FROM Country c") public class Country { ... } Attaching multiple named queries

of SELECT queries. DELETE queries cannot include multiple variables and JOIN, and cannot include the GROUP

.class); q. where (cb. gt (c. get ("population"), p)); Multiple Restrictions The second where method

should be cascaded automatically to entity objects that are referenced by that field ( multiple entity objects

an ID class when using multiple ID fields or properties. Finally, the EntityType interface adds

reference. In JPQL, the current FROM variable (or FROM tuple when there are multiple variables

on which the server is running. Multiple IP addresses can also be specified in a comma separated list and using

dependent. Query results can also be ordered by multiple order expressions. In this case, the first

to seperate files ( Each file is binded to different disk ) How can i configure objectdb for multiple ... so you cannot split a database to multiple disks unless you split the database itself to multiple ... .g. temporary files, recovery file) to other disks. using replication with multiple servers

Hi, I'm running objectdb in server mode, config as it comes out of the box. In this case the database is being used as a queue with multiple seperate processes, each with multiple threads, writing messages. The message is split into a lightweight metadata message to allow fast searching

.currentTransaction().begin(); pm.makePersistent(person); pm.currentTransaction().commit(); Multiple objects can become persistent, either by multiple calls to makePersistent( ... ) , or by passing ... . An embedded object cannot be shared by references from multiple objects. In addition, embedded objects

can be accessed by multiple processes simultaneously. In addition, the server supports accessing ... on which the server process is running. Multiple IP addresses can also be specified in a comma ... server, which can serve either a single website or multiple websites of one or more users

.declareParameters("Date date"); Collection result = (Collection)query.execute(date); Multiple import statements ... . Multiple import statements are separated by semicolons. A semicolon at the end of the string is optional ... , Date , BigInteger and BigDecimal . Multiple order expressions can also be specified: Query query = pm

( Chapter 6 ). 5.1  javax.jdo.PersistenceManagerFactory Most applications require multiple ... transaction, a WRITE lock is obtained on that object by the PersistenceManager . Multiple READ locks

with the name X.jdo must be dedicated to a single class whose name is X . Metadata for multiple ... and cannot be shared by references from multiple objects. In addition, embedded objects of persistent classes