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26

JPA Persistable Types

, Mapped superclasses, Embeddable classes. Simple Java data types: Primitive types, Wrappers, String ... : boolean, byte, short, char, int, long, float and double. Equivalent wrapper classes from package
26

ObjectDB Object Database Features

(for persistent fields) Primitive types (boolean, byte, short, char, int, long, float, double). Wrapper ... , char, int, long, float and double). Wrappers (Boolean, Byte, Short, Character, Integer, Long
18

Index Definition

, long, float, double. Equivalent wrapper classes from package java.lang: Byte, Short, Character, Integer
18

JPA Metamodel API

a thin wrapper of Class with only two methods: // Get the underlying Java representation of the type
18

Criteria Query Selection and Results

the ORDER BY clause are represented by the Order interface: The Order interface is a thin wrapper
18

Comparison in JPQL and Criteria API

, char, int, long, float, double), wrapper types (Byte, Short, Character, Integer, Long, Float
18

ORDER BY clause (JPQL / Criteria API)

interface is merely a thin wrapper around Expression, which adds order direction - either ascending (ASC
18

JPA Primary Key

: boolean, byte, short, char, int, long, float, double. Equivalent wrapper classes from package java
3

[ODB1] Chapter 7 - JDOQL Queries

operators. Date instances can be compared using all six comparison operators. Numeric wrapper types ... . Arithmetic Operators In JDOQL, arithmetic operators (+, -, *, /) can be applied to numeric wrapper types ... . Wrapper values (Boolean, Byte, Short, Character, Integer, Long, Float, Double) are used instead
3

[ODB1] Chapter 4 - JDO Metadata

. Wrapper objects, strings, dates, collections and arrays are embedded by default. To use them as non ... , short, char, int, long, float or double) embedded wrapper (Boolean, Byte, Short, Character ... indexes. Fields of value types (primitive types, wrapper types, String and Date) are embedded by

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.

Need Help?

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