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38

Missing Data on Retrieval (0, null values)

contains all necessary Data. Most of the others contains all Object-Rows', but most Values of the Columns ... ). support Support The Data is even missing in the resultlist without any Export-Function. A little ... accessing the fields directly) then you must make sure that data is fetched from the database before
38

Spring Data JPA - PersistenceException thrown

.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.getMetamodels(JpaMetamodelMappingContextFactoryBean.java:90) at org.springframework.data.jpa.repository.config ... .data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance
38

Finance data from SQL Server into ObjectDB daily

feedback from the community to see if I'm thinking about it right. We have a finance data mart that is appended to daily via an SSIS package. I would like to pull the data from SQL, add it to a bean ... to retrieve data from RDBMS tables and then use the same JPA entity classes to store the data in
38

Wrong data stored in time only fields

This may be related to the fix for the problem described in this thread: Wrong data stored in date ... are using the 2015g time zone data. While we cannot see a problem with date only fields (more testing ... , but see further explanation of some odd values below. Here is the data used to create the 9 records: 2015-12-19 18:12:53,000
38

Data portability

Hi, I've never used an OODB, I'm looking for a starting point but a recurrent concern is the Data Portability one. More clear: what options / strategies do I have to export / move my data ... (based on JPA/JDO standards), but what about Data Portability? Regards, lorenzo.sm Lorenzo Solano
38

JPA and handling large data sets

. But exporting large binary data sets is very slow. To avoid memory problems the binary data type is read step by step during the export with the query/setFirstResult() & setMaxResults(). But for large data sets the way is slow. We have an own entity for storing binary data (pictures, documents). Hint
38

ObjectDB data migration/extraction

Hi What is the way to extract data from ObjectDB to relational databases (Oracle). We need to feed an Oracle database with data for reporting/datawarehosing. Should JPQL be used or is there some ... , so you will have to migrate data using your own code. Notice that you should be able to use ObjectDB with BIRT to produce
37

Import data from MySQL

mysql data into objectdb? gzdillon Lai Yang Currently to import data from other databases to ObjectDB ... data from MySQL using JPA as entity objects, detach the retrieved entity objects and then persist them into ObjectDB. An automatic data conversion utility is expected to be implemented as
37

Retrieve data of all entity classes in a single query

I have in an objectdb file 10 Entity Classes with some data in each (Athlete, Trainer, Stadium etc) This is the code I use to retrieve all Managed Types and data for the Athlete class Metamodel ... to get data of all classes without writing down 10 different queries (i.e. using the for loop)? I tried
37

index - data rewrite

Hi we have found that applying indexes on an existing table erases the data. Are we doing ... carefully if data is missing (very unlikely) or queries fail to return results (possible if a new ... )? What data is missing? Complete objects? specific fields in objects? fields related to the new index

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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