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270

Numbers in JPQL and Criteria Queries

a specified argument and returns the absolute value, which is always a positive number or zero ... function calculates the remainder of the division of one number by another, similar to the modulo operator ... ); // 2 expressions Expression<Integer> sum2 = cb.sum(path, 1000); // expression + number
124

Number of current connections

Is there any way to find out the number of current connections to the DB server? natmaclin Natalia Levine Currently not. You may subscribe to this feature request and update it according to your needs. support Support
75

toBigDecimal(number)

Method javax.persistence.criteria.CriteriaBuilder Expression<BigDecimal> toBigDecimal( Expression<?> number ) Typecast. Returns same expression object. Parameters: number - numeric expression Returns: Expression<BigDecimal> Since: JPA 2.0
75

toDouble(number)

Method javax.persistence.criteria.CriteriaBuilder Expression<Double> toDouble( Expression<?> number ) Typecast. Returns same expression object. Parameters: number - numeric expression Returns: Expression<Double> Since: JPA 2.0
75

toBigInteger(number)

Method javax.persistence.criteria.CriteriaBuilder Expression<BigInteger> toBigInteger( Expression<?> number ) Typecast. Returns same expression object. Parameters: number - numeric expression Returns: Expression<BigInteger> Since: JPA 2.0
75

toInteger(number)

Method javax.persistence.criteria.CriteriaBuilder Expression<Integer> toInteger( Expression<?> number ) Typecast. Returns same expression object. Parameters: number - numeric expression Returns: Expression<Integer> Since: JPA 2.0
75

toFloat(number)

Method javax.persistence.criteria.CriteriaBuilder Expression<Float> toFloat( Expression<?> number ) Typecast. Returns same expression object. Parameters: number - numeric expression Returns: Expression<Float> Since: JPA 2.0
75

toLong(number)

Method javax.persistence.criteria.CriteriaBuilder Expression<Long> toLong( Expression<?> number ) Typecast. Returns same expression object. Parameters: number - numeric expression Returns: Expression<Long> Since: JPA 2.0
7

Constants.NONCONFIGURABLE_PROPERTY_VERSION_NUMBER

Static Field javax.jdo.Constants String NONCONFIGURABLE_PROPERTY_VERSION_NUMBER Nonconfigurable property constanct "VersionNumber" Since: JDO 2.1 See Also: PersistenceManagerFactory.getProperties()
7

VersionStrategy.VERSION_NUMBER

Enum Constant javax.jdo.annotations.VersionStrategy VERSION_NUMBER Since: JDO 2.1

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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