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11

How to avoid NULL values on Embedded entities

; @ManyToOne private Cliente cliente; //Opcional @Basic(optional=false) private Date fechaYhora; //Fecha en que se debe enviar el coche } public class Direccion { @Basic(optional=false) private String calle; @Basic(optional=false) private int numero; @Basic(optional=false) private String ciudad; @Basic
11

New to Product & Having An Issue

) { if(((Department) obj).getDomainId() == null || this.domainId == null) return false ... () { super(); } @Basic(optional=false) public String getAccountId() { return ... = accountId; } @Basic(optional=false) public String getObjectId() { return objectId
11

cache optimizing

" user="true" password="true" /> <log path="$objectdb/log/" max="8mb" stdout="false" stderr="false ... " path="." max="128mb" /> <recording enabled="false" sync="false" path="." mode="write" /> <locking ... > <entities> <enhancement agent="false" reflection="warning" /> <!-- cache: 2048mb/8GByte RAM, 4096mb
2

javax.persistence.metamodel.IdentifiableType

. Returns true for a simple id or embedded id; returns false for an idclass. Returns: boolean
2

javax.persistence.Cacheable

; it can be overridden by specifying Cacheable on a subclass. Cacheable(false) means that the entity and its state
2

javax.persistence.criteria.AbstractQuery

duplicates to be eliminated. A false value will cause duplicates to be retained. If distinct has not
0

javax.jdo.annotations.Key

columns associated with this join. Specify "true" or "false". Returns: whether to generate or assume
0

setRestoreValues(restoreValues)

of the transaction. If false, at rollback, the values of fields of newly persistent instances are unchanged
0

setCopyOnAttach(flag)

. With this flag set to false, detached parameter instances are attached directly and change their state
0

nonBinaryCompatibleIs(pc, sibr)

the state interrogation; Boolean.FALSE if the instance does not satisfy the interrogation; or null

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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