ObjectDB Database Search

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Problem to use find method on an abstract Class: AbstractMethodError is thrown

; When I use find method mentioning SentenceStatement everything works just fine but when I use ... with the 2 options for a better ease    this is the stack trace when I try to find LogicalObject ... -127.0.0.1-8080-1) JBAS014101: Failed to find SFSB instance with session ID {[-48, -118, 126, 59, 2

find() cost unreasonable time!

, why? Result: =========== find time @ 24.125000 getSons time @ 0.000000 1 : type:Nodes, sons:2 child : 2 child : 3 Iterator time @ 0.000000 find time @ 0.000000 getSons time @ 0.000000 2 : type:Nodes, sons:2 child : 4 child : 5 Iterator time @ 0.000000 find time @ 0.000000 getSons time @ 0.000000 3

Error when trying to open the Explorer (failed to find Java VM)

get this windows error: "Failed to find Java VM".   What is the problem? dreckguy Ophir Haramaty ... \bin\ [err] Failed to find Java VM.  and the windows startup error is shown By trying explorer-b ... . so after finding the jar file start everything needed it won't cause a problem but still worth reporting.  

find out if an entity is refered by other entities

Hello, it is possible to find out if a child entity is just referenced by other parent entity types. But the types of the parent entities are unknown. Is there a possibility to find out if an entity is referenced? best regards btc_es BTC EmbeddedSystems You can only find it (using a query

find() delay

(o); trans.commit();} 2, for 1 to 30 {p = em. find (typeC.class, i); print(p)} So simple a test ... is enabled. support Support L2 cache? I'm not sure. But why the second find () will output? By ... .getResultList(); // this works 3. typeC p = em. find (typeC.class, i);  // this p will be null

EM.find() is suddenly slower

We have a new performance bottleneck, if we use EM. find () on the same entity type 10.000 times in order to get 10.000 different entity instances. For use cases which call the EM. find () only 1000 ... where you can find the hotspot in the profiling. btc_es BTC EmbeddedSystems Thanks. It is unclear

EntityManager.find(entityClass,primaryKey) - JPA Method

JPA Method in jakarta.persistence.EntityManager T find (   Class  entityClass,    Object primaryKey ) Find by primary key. Search for an entity of the specified class and primary key. If the entity instance is contained in the persistence context, it is returned

EntityManager.find(entityClass,primaryKey,options) - JPA Method

JPA Method in jakarta.persistence.EntityManager T find (   Class  entityClass,    Object primaryKey,    FindOption... options ) Find an instance of the given entity class by primary key, using the specified plain. Search for an entity

EntityManager.find(entityGraph,primaryKey,options) - JPA Method

JPA Method in jakarta.persistence.EntityManager T find (    EntityGraph  entityGraph,    Object primaryKey,    FindOption... options ) Find an instance of the root entity of the given EntityGraph by primary key, using the specified plain

EntityManager.find(entityClass,primaryKey,lockMode) - JPA Method

JPA Method in jakarta.persistence.EntityManager T find (   Class  entityClass,    Object primaryKey,     LockModeType  lockMode ) Find by primary key and obtain the given lock type for the resulting entity. Search for an entity

EntityManager.find(entityClass,primaryKey,properties) - JPA Method

JPA Method in jakarta.persistence.EntityManager T find (   Class  entityClass,    Object primaryKey,    Map  properties ) Find by primary key, using the specified properties. Search for an entity of the specified class and primary key

EntityManager.find(entityClass,primaryKey,lockMode,properties) - JPA Method

JPA Method in jakarta.persistence.EntityManager T find (   Class  entityClass,    Object primaryKey,     LockModeType  lockMode,    Map  properties ) Find by primary key and lock the entity, using the specified properties

Entity can be found by find() but not by query

Hello, we create an entity in transaction A, commit and close the transaction. After that in transaction B we try to find the entity in the DB. But we get always only a result with em. find (), with a query it is not always possible to get the entity, sometimes we get the entity

What algorithm in find()

I test the time cost for find (), obtain a linear complexity with the following codes:   int iBlock = 0x10000;   for (int i = 1; i

Cannot find objectdb-jee.jar releases in the ObjectDB maven repository

Hi, I can only find objectdb.jar releases in the ObjectDB maven repository. If objectdb-jee.jar releases are there, can you let me know where they are, otherwise would it be possible to include objectdb-jee.jar for the current and future maven releases ? Thanks Andrew   andrewv Andrew Voumard

Query to find object from element of a contained collection

I have an OrderData class, containing an OrderItemData collection, i would like to find OrderData elements by OrderData.items.itemId. I cant get a proper query with MEMBER OF or IN. Does anyone have an idea on how i could formulate that as Typed or CriteriaBuilder query? Thanks.   @Entity

Finding an object by its datetime

SearchBookingByTimeStamp() { Calendar btime = Calendar.getInstance(); btime.set(2012, 10, 11, 7, 30, 00); //This time is already inserted, trying to find it /* My Query */ TypedQuery query = em.createQuery( "SELECT b FROM Booking b WHERE b.btime = :btime", Booking.class) .setParameter("btime

find repeated records by JPQL

Hi, I know a single command in MySQL can find repeated records: Select * from TTT t where id in (select id from TTT s group id having count(id)1) I dont know how to do this using JPQL, but I use query from 430,000 records and put them into hashmap, finally it cost one hour and failed: Exception in

EntityManager.find(entityClass, primaryKey) is slow when accessing non-existent IDs

* * EntityManager. find (entityClass, primaryKey) is slow when accessing * non-existent IDs. * * Select queries

Finding out the JPA provider

Do you have any preferred way of finding out whether ObjectDb is my EntityManager's JPA Provider? I know there are problems with using getDelegate ( http://weblogs.java.net/blog/ss141213/archive/2009/05/be_careful_whil.html ) but on the other hand unwrap is not very portable ( https

Find the error...JPA ENTITY HIBERNATE

Hey guys....i am searching for some days for the problem...Maybe one of you can find the error   DATABASE SHEMA: https://www.file-upload.net/download-12530779/2017-06-0214_25_00-MySQLWorkbench.png.html       Entities:   package com.example.demo; import java.io.Serializable

How find out ObjectDB version at runtime (in a web app)

How find out ObjectDB version at runtime (in a web app)

finding post-persist pre-commit objects

finding post-persist pre-commit objects

Retrieving JPA Entity Objects

object whose primary key is 1: Employee employee = em. find (Employee.class, 1); Casting of the retrieved object to Employee is not required because find is defined as returning an instance of the same ... null is returned. A similar method, getReference , can be considered the lazy version of find

Locking in JPA

operation. For example, the find method has a form that accepts a lock mode: Employee employee = em. find ... ();   properties.put("javax.persistence.lock.timeout", 2000); Employee employee = em. find

Shared (L2) Entity Cache

and primary key: em. find (MyEntity2.class, Long.valueOf(1),      Collections ... operation. For example: em. find (MyEntity2.class, Long.valueOf(1),    Collections. singletonMap

Updating JPA Entity Objects

from inside an active transaction: Employee employee = em. find (Employee.class, 1); em ... changes when using enhanced entity classes: Employee employee = em. find (Employee.class, 1); em

Setting and Tuning of JPA Queries

operations, such as find . However, query execution is much more complex. Therefore, before a query

Is ObjectDB better than competing object databases?

that during development you may find that an essential feature is missing. For example, some competing products

Deleting JPA Entity Objects

transaction, it can be deleted using the remove method: Employee employee = em. find (Employee.class, 1

Chapter 4 - JPA Queries (JPQL / Criteria)

The JPA Query Language (JPQL) can be considered as an object oriented version of SQL. Users familiar with SQL should find JPQL very easy to learn and use. This chapter explains how to use JPQL as well as how to use the JPA Criteria API, which provides an alternative way for building queries in JPA

Blocked by find

" find " method. If nothing is returned from the db the passed object is persisted to the db. I have 5 ... somewhere in the find . The thread dump looks like: Name: DEV1-WSAgent-1-Existing/3 State: RUNNABLE Total ... :1056) com.objectdb.o.OBC.aK(OBC.java:969) com.objectdb.jpa.EMImpl. find (EMImpl.java:551) - locked

Unexpected exception (Error 990) on find

.EMImpl. find (EMImpl.java:591) at com.objectdb.jpa.EMImpl. find (EMImpl.java:514) at sun.reflect ... (SharedEntityManagerCreator.java:240) at $Proxy33. find (Unknown Source) at local.jpa.mapping.xmlparsing.RepoEbene1a ... and may be relevant. The exception is thrown during find . What entity key type is used in that find

Sometimes the ObjectDB throws an internal expeption if a find() was executed

Sometimes the ObjectDB throws an internal exception if a find () was executed. It is a sporadic ... .objectdb.jpa.EMImpl. find (EMImpl.java:607) at com.objectdb.jpa.EMImpl. find (EMImpl.java:519) and com ... (UserException.java:93) at com.objectdb.o.OBC.aN(OBC.java:906) at com.objectdb.jpa.EMImpl. find (EMImpl.java

NPE when doing a find()

a em. find (User.class, 1).  Then this happens: [ObjectDB 2.2.1_02] Unexpected exception (Error ... (OBC.java:912) at com.objectdb.jpa.EMImpl. find (EMImpl.java:534) at com.objectdb.jpa.EMImpl. find

InternalException during EntityManager.find()

.onObjectDBError(OBC.java:1566) ~[na:na] at com.objectdb.jpa.EMImpl. find (EMImpl.java:607) ~[na:na] at com.objectdb.jpa.EMImpl. find (EMImpl.java:519) ~[na:na] at com.btc.ep.expression.dal.internal.repositories ... ) ~[na:na] at com.objectdb.o.OBC.aN(OBC.java:987) ~[na:na] at com.objectdb.jpa.EMImpl. find (EMImpl

InterfaceRef jakarta.persistence.EntityManager

is not an entity Since: JPA 2.0 T find (Class  entityClass, Object primaryKey) Find ... if the second argument is not a valid type for that entity's primary key or is null Since: JPA 1.0 T find (Class  entityClass, Object primaryKey, FindOption... options) Find

Step 7: Run the Spring Web App

) in Tomcat: Find the Tomcat server in the [Services window] under Servers. Right click the server node

InterfaceRef jakarta.persistence.FindOption

JPA Interface FindOption An option influencing the behavior of EntityManager. find . Built-in options control plain, plain, and plain. This interface may be implemented by custom provider-specific ... PessimisticLockScope CacheRetrieveMode CacheStoreMode Timeout EntityManager. find EntityManager. find Since: JPA 3.2

ClassRef jakarta.persistence.OptimisticLockException

. See Also: EntityManager. find EntityManager. find EntityManager.lock EntityManager.lock Since: JPA 1.0 Public Constructors

InterfaceRef jakarta.persistence.criteria.CriteriaBuilder

for finding the greatest of the values (strings, dates, etc). Parameters: x - expression representing ... ;x) Create an aggregate expression for finding the least of the values (strings, dates

ArrayIndexOutOfBoundException

(OBC.java:1081) at com.objectdb.o.OBC.aM(OBC.java:999) at com.objectdb.jpa.EMImpl. find (EMImpl.java:591) at com.objectdb.jpa.EMImpl. find (EMImpl.java:514) at com.ysoft.cache.objectdb.ObjectCacheDB ... , it wouldn't be easy to find and fix it. If you can share your test so we will be able

EnumRef jakarta.persistence.LockModeType

locks ( lock() , find () , or refresh() ), or to Query.setLockMode or TypedQuery.setLockMode

EnumRef jakarta.persistence.CacheRetrieveMode

JPA Enum CacheRetrieveMode java.lang.Object ∟  java.lang.Enum ∟  jakarta.persistence.CacheRetrieveMode Implemented Interfaces: FindOption Specifies how the EntityManager interacts with the second-level cache when data is read from the database via the EntityManager. find methods

CriteriaBuilder.least(x) - JPA Method

JPA Method in jakarta.persistence.criteria.CriteriaBuilder Expression least (    Expression  x ) Create an aggregate expression for finding the least of the values (strings, dates, etc). Parameters: x - expression representing input value to least operation Return: least expression Since: JPA 2.0

CriteriaBuilder.greatest(x) - JPA Method

JPA Method in jakarta.persistence.criteria.CriteriaBuilder Expression greatest (    Expression  x ) Create an aggregate expression for finding the greatest of the values (strings, dates, etc). Parameters: x - expression representing input value to greatest operation Return: greatest expression Since: JPA 2.0

InterfaceRef jakarta.persistence.EntityGraph

EntityManagerFactory.addNamedEntityGraph EntityManager. find Since: JPA 2.1 Public Methods

stress test -> com.objectdb.o.InternalException: null

.objectdb.o.OBC.aN(OBC.java:976) at com.objectdb.jpa.EMImpl. find (EMImpl.java:616) at com.objectdb.jpa.EMImpl. find (EMImpl.java:536) at org.apache.openejb.persistence.JtaEntityManager. find (JtaEntityManager.java:168) at com.fitbird.control.p2.WorkoutPlanC. find (WorkoutPlanC.java:56) at sun.reflect

Page cache File handling produced an java.io.IOException: Negative seek offset

we get following exception when we execute a find () in a scenario, we can not readjust ... _541100773067300498\pages11.dat' (error 117)     at com.objectdb.jpa.EMImpl. find (EMImpl.java:630)     at com.objectdb.jpa.EMImpl. find (EMImpl.java:545)     at com.btc

Inverse OneToMany Mapping and EmbeddedId

.hibernate.jpa.boot.internal.PersistenceXmlParser - HHH000318: Could not find any META-INF/persistence ... types of an EmbeddedId.   benchmark (huge time scaled sensor data set): v 2.9.0_04 (fast) find _1_N_1Y() PT19.06S -0.81G/0.68G find _1_N_1Y() PT24.17S -0.13G/0.73G find _1_A_1Y() PT37.456S -0.62G/0.49G