Fast Object Database for Java - with JPA/JDO support

About strong

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Entity Management Settings

", "soft" and "strong". Modified entities are always held by strong references in the persistence

ObjectDB 1.0 Manual

(SQL, JDBC or JDO) is not required in order to follow this guide, but a strong background

ObjectDB 2.8 Developer's Guide

(SQL, JDBC, ORM or JPA) is not required in order to follow this guide, but a strong background

[ODB1] Chapter 6 - Persistent Objects

store transactions (which is the default in ObjectDB), there is a strong relationship between object

[ODB1] Chapter 5 - JDO Connections

PersistenceManager instance, in any context, to return its associate Transaction object. The strong

Working with JPA Entity Objects

it and it is automatically removed from the persistence context. ObjectDB can be configured to use strong references or

Soft Reference Object Cache Recommendation

called to manipulate the softReferenceData in my JdoBlob2 instances, so there is a strong reference ... datastore page file cache keeping strong references to the pages that comprise the data of the byte ... [] that is not released and you expect to be released? Can you see a path of strong references from a root

Best practise loading big data

to hold strong references (which prevents garbage collection) to non dirty entity objects ... about the number of instances in the heap per type and paths of strong references from roots to objects? support ... with strong references, so hopefully the heap dump could help in understanding the issue. support Support

evictAll() behavior

- but it is less efficient and has some limitations. For example, strong references to your objects ... makeTransient / makeTransientAll). ObjectDB doesn't hold strong references to hollow objects, so if your application doesn't hold strong references either - they can be garbage collected. support

Entity Management Config questions

). The valid values are "weak", "soft" and "strong". Modified entities are always held by strong ... : What exactly is the difference between "weak", "soft", and "strong" references? dmoshal David Moshal ... -weak-references For more information, please see: support Support

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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