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Unable to create 128 column of a table.

Hi, Can we create 128 column of table? am getting following error. java.lang.ArrayIndexOutOfBoundsException: -128 at com.objectdb.o.ALS.g(ALS.java:135) at com.objectdb.o.ANT.G(ANT.java:594) at com.objectdb.o.ANT.x(ANT.java:526) at com.objectdb.o.SCM.o(SCM.java:175

drop a column from table

Hi, I want to drop one column from my database table suppose i have 3 column (id, name, address) now i want to drop address. then what will be the query or procedure.. Bimal Bimal kumar dalei Just remove the field from the entity class. See Automatic Schema Evolution. Space in the database file

Does adding normal fields to a table require a restart of the DB?

I have a table that needs a new non-indexed field. My DB is in client/server mode. Do I need to restart the DB? Trianglehead Json Error Yes. See the note on this manual page. support Support

unable to update table in slave server database

Hi, We are facing below issue in objectdb clustering. Currently in objectdb clustering when master server is down ,in slave server during update operation in table getting below issues. Failed to commit transaction: Attempt to commit a transaction in read only mode[ObjectDB 2.8.2] javax.persistence

Field or Table Encryption

Is there a build-in way to encrypt object fields or entire "tables" with annotations? If not, are there any recommended design patterns? Thanks mrbahr2003 Thomas Gregory Please see this feature request in the issue tracking. If you need selective encryption of types / fields - please describe your suggestion in that issue thread. support Support

Table view does not work for queries

This shows that table view does not work for queries Trianglehead Json Error The attached database seems to be empty. support Support Here it is. Not sure why that was empty. Trianglehead Json Error Thank you for this report. Build 2.8.3_04 should fix this issue. support Support Thanks! So I need


Let's say I no longer need some entity in my project and after deleting all the objects of this type in database I want to remove this type from schema. How can I do this? Is there something like SQL 'drop table' in ODB? lwalkowski Lukasz Walkowski This is currently not supported. As far as I

Comparison in JPQL and Criteria API

ObjectDB supports two sets of comparison operators, as shown in the following table: Set 1 - JPQL ... The following table shows how NULL values are handled by each comparison operator. One column presents ... . When both operands are not NULL (not shown in the table) the operator is evaluated to either TRUE or FALSE


the mapping of associations. It is specified on the owning side of an association. A join table ... -to-one relationships, and one-to-one associations (both bidirectional and unidirectional). When a join table ... of the join table is assumed to be the table names of the associated primary tables concatenated


@JoinColumn(name="CUST_ID") // join column is in table for Order public Set ... . (Optional) The name of the foreign key column. The table in which it is found depends upon the context ... key column is in the table of the source entity or embeddable. If the join is for a unidirectional

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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