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Items in list are doubled, when the entity class is not enhanced

Dear all, I have a problem with adding items (entities) into other entity list. When the classes are not enhanced, added items are doubled. Here is an example: @Entity public class Customer ... ? Michael anaq x I've found out a new thing - items are also doubled, when the classes are enhanced

Double persist of Entity field with Cascade.ALL

table would have double entry of same record. Burabari Burabari Kpai For completeness, attached

run several embedded systems on one server, problem with double used port

we want to run several embedded systems on one server. In principle this is working but there are endless logs generated reporting about a double used port. Ist there a possibility to configure that port for each embedded system hgzwicker Hans-Georg Zwicker Are you using embedded-server mode? In

ObjectDB Object Database Features

from failure by using a recovery file and double writing. Additional recovery layer - supports ... (for persistent fields) Primitive types (boolean, byte, short, char, int, long, float, double). Wrapper types (Boolean, Byte, Short, Character, Integer, Long, Float, Double). java.lang.String Date types: java

Numbers in JPQL and Criteria Queries

value and a double value is double. The ABS Function The ABS function removes the minus sign from ... of any type and always returns a double value. Criteria Query Arithmetic Expressions JPQL arithmetic ... , but all the numeric types (byte, short, int, long, float, double, BigInteger, BigDecimal) are supported. Unary

Literals in JPQL and Criteria Queries

, 07777L float: 3.14F, 0f, 1e2f, -2.f, 5.04e+17f double: 3.14, 0d, 1e2D, -2., 5.04e+17 ObjectDB ... are enclosed with double quotes (e.g. "Adam", "") and Java escape characters can be used (e.g. "Adam\'s ... ); Expression<Integer> i2 = cb.literal(Integer.ValueOf(2)); Expression<Double> d = cb.literal(3.4

Comparison in JPQL and Criteria API

, char, int, long, float, double), wrapper types (Byte, Short, Character, Integer, Long, Float, Double), BigInteger and BigDecimal can be compared by using any comparison operator. String values ... detailed above. Therefore, for example, a double value can be compared to a BigInteger instance

JPA Persistable Types

: boolean, byte, short, char, int, long, float and double. Equivalent wrapper classes from package java.lang: Boolean, Byte, Short, Character, Integer, Long, Float and Double. java.math.BigInteger

[ODB1] Chapter 7 - JDOQL Queries

, ... double 3.14, 0d, 1e2D, -2., 5.04e+17, ... char 'x', '@', '\n', '\\', '\'', '\uFFFF', ... string ... (Byte, Short, Character, Integer, Long, Float, Double), as well as BigInteger and BigDecimal ... , double). Logical Operators Logical operators (&&, ||, !) generate complex boolean expressions

[ODB1] Chapter 9 - ObjectDB Explorer

directory. Because this file is an executable jar, on most systems, you can double click on it to start ... " command switches the current viewer to focus on the selected object. A double click on the target element ... ). You can start editing a value field by double clicking it, by pressing F2, or, more commonly, by simply

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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