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Manual
269

Date and Time in JPQL and Criteria Queries

expressions - in navigation to persistent date and time fields. as results of predefined JPQL current date and time functions. Current Date and Time JPA defines special JPQL expressions that are evaluated to the date and time on the database server when the query is executed: CURRENT_DATE
Manual
32

JPA Persistable Types

only once even if they are referenced multiple times. Referencing instances of other persistable types from multiple ... .Time, java.sql.Timestamp. Date and time types are discussed in more detail in the next paragraph. Date and Time (Temporal) Types The java.sql date and time classes represent different parts of dates
JDO Doc
32

current()

Method javax.jdo.datastore.Sequence Object current() Returns the current sequence value object if it is available. It is intended to return a sequence value object previously used. If the current sequence value is not available, throw JDODataStoreException. Returns: the current value Since: JDO 2.0
Manual
23

Database Schema Evolution

entity class. This is done automatically in memory each time the entity object is loaded. The database
JDO Doc
22

Constants.PMF_ATTRIBUTE_SERVER_TIME_ZONE_ID

Static Field javax.jdo.Constants String PMF_ATTRIBUTE_SERVER_TIME_ZONE_ID The name of the persistence manager factory element's "server-time-zone-id" attribute. Since: JDO 2.1
JPA Doc
22

TemporalType.TIME

Enum Constant javax.persistence.TemporalType TIME Map as java.sql.Time Since: JPA 1.0
JDO Doc
22

Constants.PROPERTY_SERVER_TIME_ZONE_ID

Static Field javax.jdo.Constants String PROPERTY_SERVER_TIME_ZONE_ID Mapping "javax.jdo.option.ServerTimeZoneID" Since: JDO 2.1
JDO Doc
22

VersionStrategy.DATE_TIME

Enum Constant javax.jdo.annotations.VersionStrategy DATE_TIME Since: JDO 2.1
Manual
19

FROM clause (JPQL / Criteria API)

_LENGTH, CHARACTER_LENGTH, CLASS, COALESCE, CONCAT, COUNT, CURRENT_DATE, CURRENT_TIME, CURRENT ... response time. Database Management Systems (DBMS), including ObjectDB, try to optimize execution ... of the referenced Capital objects is performed one at a time, i.e. the number of round trips
Manual
18

Literals in JPQL and Criteria Queries

are more generic and efficient because they can be compiled once and then run many times with different parameter ... , 077L), a feature that is not currently supported by all JPA implementations. String Literals JPQL ... equivalent. Date and Time Literals JPQL follows the syntax of SQL and JDBC for date literals: Date - {d