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objectdb-2.6.9_02 (with "objectdb.temp.no-enhancement-crc-check") vs. generic classes with interfaces: detailed investigation

[SomeOtherEntity] implements IValue<T> { @Entity public class BooleanValue extends Value<Boolean ... with why one would bother to wrap something like a Boolean in this fashion, it is however a very powerful and crucial technique (and it is not used in all cases for every trivial boolean value in the system, just
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Type ... is not defined as an entity (@Entity is missing) (error 302)

.PersistenceCapable @Bindable @PersistenceCapable class CultureRqst { // Common Boolean candS = false Boolean gramStain = false Boolean fungal = false OtherRqst commonOtherRqsts = new OtherRqst() // Bacteria (Fastidious) Boolean afb
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Pre-detach loading: retrieval by navigation not working in if statement

is a subclass of entity Block - A Block has a property 'present' which is a "deep" Boolean value wrapper ... a simple Boolean property 'value'. - A LightingZone has a property 'v_NLA' which is a "deep" Float value ... more things. This is enough to "provoke" loading of the Boolean lz.present.value before
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coalesce()

type of the tuple element Since: JPA 2.0 boolean isCompoundSelection() Whether the selection item is a compound selection. Whether the selection item is a compound selection. Returns: boolean
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javax.jdo.identity.LongIdentity

the objects Since: JDO 2.2 boolean equals(Object obj) Determine if the other object represents the same ... - the other object Returns: true if both objects represent the same object id Since: JDO 1.0 boolean equals(Object
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javax.jdo.identity.CharIdentity

. Parameters: o - Other identity Returns: The relative ordering between the objects Since: JDO 2.2 boolean ... if both objects represent the same object id Since: JDO 1.0 boolean equals(Object obj) Check the class
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equals(obj)

Method javax.jdo.identity.ShortIdentity boolean equals( Object obj ) Determine if the other object represents the same object id. Parameters: obj - the other object Returns: true if both objects represent the same object id Since: JDO 1.0
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equals(obj)

Method javax.jdo.identity.StringIdentity boolean equals( Object obj ) Determine if the other object represents the same object id. Parameters: obj - the other object Returns: true if both objects represent the same object id Since: JDO 1.0
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setResultClass(cls)

may be specified to be one of the java.lang classes Character, Boolean, Byte, Short, Integer, Long, Float, Double
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setUnique(unique)

Method javax.jdo.Query void setUnique( boolean unique ) Specify that only the first result of the query should be returned, rather than a collection. The execute method will return null if the query result size is 0. Parameters: unique - if true, only one element is returned Since: JDO 2.0

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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