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Geospatial functions

given latitude/longitude) ?Normally you would calculate the distance like: double cx = Math.toRadians(fromLat); double cy = Math.toRadians(fromLon); double px = Math.toRadians(toLat); double py = Math.toRadians(toLon); // see http://de.wikipedia.org/wiki/Orthodrome double gamma = Math.acos

JPA Persistable Types

, Date and Math types. Multi value types - Collections, Maps and Arrays. Miscellaneous types: Enum ... java.lang: Boolean, Byte, Short, Character, Integer, Long, Float and Double. java.math.BigInteger, java.math.BigDecimal. java.lang.String. java.util.Date, java.util.Calendar, java.sql.Date, java.sql

Index Definition

, Long, Float, Double. java.math.BigInteger, java.math.BigDecimal. java.lang.String. java.util.Date

ObjectDB Object Database Features

.util.Date, java.sql.Date, java.sql.Time and java.sql.Timestamp. Math types: java.lang.BigInteger ... .Timestamp. Math: java.lang.BigInteger and java.lang.BigDecimal. Auto Value Generation Modes

JPA Primary Key

.lang: Byte, Short, Character, Integer, Long, Float, Double. java.math.BigInteger, java.math.BigDecimal


.sql.Date; java.math.BigDecimal; java.math.BigInteger. The mapped column for the primary key


types, String, java.math.BigInteger, java.math.BigDecimal, java.util.Date, java.util.Calendar, java.sql

[ODB1] Chapter 3 - Persistent Classes

. java.math.BigInteger and java.math.BigDecimal Any array of persistent type, including multi

[ODB1] Chapter 4 - JDO Metadata

. String and Integer), types defined in java.math (e.g. BigInteger), and java.util.Date. Collections


, String, or Object[]; or one of the java.math classes BigInteger or BigDecimal; or the java.util

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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