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Performance and memory usage of queries

{   @OneToMany(cascade = CascadeType.ALL)   private List<MyEntityElement> list = new ArrayList

Removing an entity throws exception

; private String name; private String surname; @OneToOne(cascade=CascadeType.ALL, fetch

Upgrade to 2.4.1_03

.o.TVS.cascade(TVS.java:156) at com.objectdb.o.TVS.g(TVS.java:105) at com.objectdb.o.TVS.g(TVS

how to query by properties of onetomany relations? (Error 990)

    public static final class Foo {         @OneToMany(cascade=CascadeType.PERSIST)         private Set

virtual servers and one file

="warning" /> <cache ref="weak" level2="256mb" /> <persist serialization="false" /> <cascade-persist

Upgrade to 2.4.1_02

.cascade(TVS.java:156) at com.objectdb.o.TVS.g(TVS.java:105) at com.objectdb.o.TVS.g(TVS.java:93

InternalException when reading a HashMap

.o.TVS.cascade(TVS.java:157) at com.objectdb.o.TVS.b(TVS.java:106) at com.objectdb

Different behavior with persist() and queried instances?

Hi, We have a simple class that by itself contains (among others) a property pointing to a collection: class Bla {     @OneToMany(cascade = CascadeType.ALL)     private List<AttributeEntity> metaAttributes = new ArrayList<AttributeEntity>(); } Now we do a simple em.persist(BlaInstance

[ObjectDB 2.2.6_02] Unexpected exception (Error 990) at com.objectdb.o.OBC.aJ(OBC.java:961)

.java:1143) at com.objectdb.o.TVS.j(TVS.java:169) at com.objectdb.o.TVS.cascade(TVS.java:156) at com

ObjectDB 2.3.3

with cascading persist after updating the database and before commit (issue #544). Fixed NullPointerException

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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