ObjectDB Database Search

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no query result

at all in the query, and according to that plan there is no result : Query plan 1/2 description ... all the Action (a) instances. [Step 2] Retrieve fields in Action (a) instances. [Step 3] Filter the results of step 2 retaining only results that satisfy: (a.transferred=0). [Step 4] Filter the results of step

Query only works correctly when debug printing results

on pc) the query results are only fully read back when debug printing the result contents before ... part commented out, the result doesnt contain all the data. The field requirementList is read back as null ... RequirementLevelEntity l", RequirementLevelEntity.class); List results = query.getResultList(); //Start of debug

java.lang.ClassCastException in query results

the "for (Stadium result : results )" line TypedQuery query = em.createQuery( "SELECT Name, Capacity, City FROM Stadium s", Stadium.class); List results = query.getResultList(); for (Stadium result : results ) { System.out.println("Name: " + result .Name + ", Capacity: " + result .Capacity + ", City: " + result

Query results are not up to date for entities, not primitives

Santos This could be the result of getting query results from the cache. There is no difference between ... that updates by queries bypass the cache and may result in not being seen by queries : "Updating ... results , if: You are using a new EntityManager (i.e. with no old cache), and The 2nd level data

Empty query results after JAR creation

-Jar xyz.jar", I get either empty results or on some cases a "NoResultException" which appears ... return any results any more. What do I wrong? Do I need any additional configuration to deploy ObjectDB ... Hansen Empty results or  NoResultException may be caused by accessing an empty database. In

Query with FETCH JOIN returns multiple results instead of one.

with two services, it's returned twice (both results contain the same instance). I believe that such query should return only one result , with fetched service sub-elements, shouldn't it? I am almost sure (but I did not bother to check, sorry!) that JPA+Hibernate would return only one result . Am I wrong

LEFT JOIN FETCH over empty embedded collection returns no results

of the first collection, the result of the overall query is an empty set. To use the example from ... include the full nested fetch, it fails, returning an empty result list: SELECT c FROM C c LEFT JOIN ... of the query).   The following query returned results : SELECT c FROM C c LEFT JOIN FETCH c.bList.aList

@ElementCollection query returning extra result per element in collection

. The issue is that, I'm getting repeated results of the owning entity of an '@ElementCollection ... ($1.name) LIKE :p1) AND (($1.conditionOne=:p2))) Got: 1 results - correct   ... .branches.branch=:p2) OR ($1.conditionOne=:p3)))) Only expected one result , but got: 2  

URGENCY, or in query does not report any objects on first operand having no results

and a.transferred = 0 there are all the results for the condition a.state = 3 it seems that the or ... )),(a.type=0)),(a.transferred=0)). [Step 2] Apply selection and prepare final results . 3:notNull ... hgzpincher Hans-Georg Zwicker Checked with 2.8.9 and both queries return 1421 results , so hopefully

JPA-Query does not lead to any result

Hi, we have a database with a Entitiy inside which we want to fetch with a query. Normally that works without a problem, but in case of this database that query does not have any results . Can anyome ... are two databases, one where the query has a result and one where the query does not has any results

wrong query result

Hi we have a problem with queries, database is returning wrong results . These are the queries ... correct results We had this problem on records created on 13 and 14 January, problem was detected ... , Attached are a db repair log and a screenshot of queries and results . We will upload the DB through private

Criteria Query results in a NoResultException instead of returning object

.RuntimeException: com.objectdb.o._NoResultException: No matching results for a unique query at org.jboss.seam ... ._NoResultException: No matching results for a unique query at com.objectdb.o.JPE.g(JPE.java:100

Multiple joins did not return expected result

OR c2.id=?1 instead? There is no error at all, just an empty result . Thats why I thought ... Running two different separate queries and merging the results (e.g. into a Java set, maybe

Indexing a field results in internal Exception

annotation.  Is there anything I can look for that might result in this exception? sjzlondon Steve Zara

Bug with unique constraint exception not resulting in transaction roll back

does result in a transaction rollback as expected.   However, this same method

Cache configuration of database file pages, query programs, query results

Are there some possibilities to configure following caches in order to keep cache data for only some important entity types and for the entire life cycle of the EntityManagerFactory. Cache of database file pages. Cache of query programs. Cache of query execution results . btc_es BTC EmbeddedSystems

Fields in objects not populated in query result.

the Explorer gives the results as expected. Any ideas what I'm doing wrong? This code had worked

Wrong select results

Hello, I got a realy strange SELECT problem. In explorer query "select p  from Player p where p.confirmed==false", given me some results with p.confirmed==TRUE. And when I try to do (see image) "select p, p.confirmed  from Player p where p.confirmed==false", I getting p-confirmed-true

An InternalException occurs when gets an result list

with query option: query.setHint("objectdb. result -fetch", "LAZY"); btc_es BTC EmbeddedSystems The exception

jakarta.persistence.criteria.CriteriaBuilder.Case

cause type conversion: the runtime type is not changed. Warning: may result in a runtime failure ... Expression.as , this method does result in a runtime type conversion. Providers are required to support ... for inequality. Since: Jakarta Persistence (JPA) 3.2 Expression otherwise ( R result ) Add

jakarta.persistence.NamedStoredProcedureQuery

, and its result type. The NamedStoredProcedureQuery annotation can be applied to an entity or mapped ... . The resultClasses element refers to the class (or classes) that are used to map the results . The resultSetMappings element names one or more result set mappings, as defined by the SqlResultSetMapping annotation

ObjectDB License Agreement [ver. 2.0.4]

out of, or related to, use of the Software. 6. The Customer may not disclose the  results of any

Strings in JPQL and Criteria Queries

String values can appear in JPQL queries in several forms: As string literals , for example, 'abc' and '' . As parameters when string values are passed as query arguments. As path expressions that navigate to persistent string fields. As the results of predefined JPQL string manipulation functions

Date and Time in JPQL and Criteria Queries

the results of predefined JPQL functions that return the current date and time. Current date and time

Index Definition

. ObjectDB also uses indexes for sorting results and for projection: SELECT MIN(p.x) FROM Point p WHERE p.x

Auto Generated Values

might not be used. Therefore, this strategy can result in gaps in the sequence values.nd  The Table

JPA Query Structure (JPQL / Criteria)

the database. The SELECT clause defines the query results . The query above returns every Country

Database Doctor

results are written to standard output. Running doctor repair To run the ObjectDB Doctor in repair mode

Is ObjectDB better than Object Relational Mapping (ORM)?

As noted above, using ObjectDB instead of a relational database and ORM combination is easier and leads to better performance. ORM tools, however, are very useful where the use of a relational database is mandatory (e.g. as a result of a customer request or when a new application

JPA Criteria Queries

the result type of a selection query. It is extended by CriteriaQuery to support the definition

Deleting JPA Entities

You can delete existing entities from the database either explicitly by calling the remove method or implicitly as a result of a cascade operation. Explicit remove To delete an entity from the database, you must first retrieve it. Then, within an active transaction, call the remove method

JPA Shared (L2) Entity Cache

results . The scope of these server-side caches is wider because they exist per database

Chapter 6 - Configuration

, lib , or build , its parent directory is the ObjectDB home directory ( $objectdb ). As a result

JPA Annotations

. Annotations for defining Native SQL queries and result set mappings.

Managing JPA Entities

. However, retrieving the same database object more than once by using the same EntityManager always results in

General Settings and Logging

results that contain millions of objects. The element specifies temporary file settings: The path

JPA Optimistic and Pessimistic Locking

mode can also be set for a query to lock all the query result objects. When a retrieval operation

ObjectDB Website - Terms and Conditions of Use

representations concerning the accuracy, likely results , or reliability of the use of the materials

Database Server

, which is more efficient. As a result , you should use embedded mode when possible. For example, if an ObjectDB

JPA Primary Key

efficiently in the database. This technique is especially useful for queries that return large result

jakarta.persistence.Tuple

the elements of a query result tuple. See Also: TupleElement Since: Jakarta Persistence (JPA) 2.0 Public ... - if tuple element does not correspond to an element in the query result tuple. Since: Jakarta ... does not correspond to an element in the query result tuple or element cannot be assigned

DB persist operation results are not available for another Thread/EntityManager immdiately

a query. But there are not any results available. We debugged the problem. Thread B executes the query and prints the results to the console, but there are not results . After that the thread stops ... again. And we get the expected results . Why? It is also possible to insert a Thread.sleep(1000) before

query only reports 1 result

2.7.2_01 suddenly some queries do only have 1 result even there are more results (you can use the database that you have from #308):   this query gives 1 result even there are a lot ... results , a number of them fit with the complete condition hgzwicker Hans-Georg Zwicker This is fixed now

Query execution creates a wrong result

Hello, we analysed an unexpected behavior and find out that the result of an Query are wrong ... returns an expected result (one Entity). The second Query is the first Query with an additional WHERE condition. But than we get another (wrong) result .   We used Version 2.6.5 and the BUG

NoResultException: No matching results for a unique query

I am very often getting a "com.objectdb.o._NoResultException: No matching results for a unique query" when modifying my already persisted entities within a transaction. I cannot replicate ... Adam The stack trace indicates a normal situation of executing a query that has no results

JPA Web App Tutorial - Maven Project

, you may download and run the result application as a Maven project: JPA Web App - Maven Project (6KB

Step 4: Add a Controller Class

)); // Prepare the result view (guest.jsp): return new ModelAndView("guest.jsp", "guestDao", guestDao

Java EE JPA Tutorial - Maven Project

;if you prefer, you may download and run the result application as a Maven project: Java EE JPA Web

Step 4: Add a Controller Class

"); if (name != null) guestDao.persist(new Guest(name)); // Prepare the result view (guest.jsp): return

Getting Started with JPA - Maven Project

The Getting Started with JPA tutorial provides step by step instructions on how to build a simple JPA database driven application in Eclipse or NetBeans . Building a new application step by step is an effective way to learn - but if you prefer, you may download and run the result