ObjectDB ObjectDB

Internal Website Search

21-30 of 200 resultsRefresh
9

Literals in JPQL and Criteria Queries

); // String literals: Expression<String> empty = cb.literal(""); Expression<String> jpa = cb
9

JPA Query Expressions (JPQL / Criteria)

: =, <>, <, <=,>, >=, IS [NOT] NULL, [NOT] BETWEEN, including Collection operators: [NOT] IN, IS [NOT] EMPTY, [NOT
9

javax.persistence.criteria.CriteriaBuilder

Predicate isEmpty( Expression<C> collection) Create a predicate that tests whether a collection is empty. Create a predicate that tests whether a collection is empty. Parameters: collection - expression Returns: is-empty predicate Since: JPA 2.0 Predicate isFalse( Expression<Boolean> x) Create
6

javax.persistence.metamodel.MappedSuperclassType

the attributes declared by the managed type. Return the attributes declared by the managed type. Returns empty ... empty set if the managed type has no declared multi-valued attributes. Returns: declared Collection ... . Return the single-valued attributes declared by the managed type. Returns empty set if the managed type
6

javax.persistence.metamodel.IdentifiableType

the managed type. Returns empty set if the managed type has no declared attributes. Returns: declared ... by the managed type. Returns empty set if the managed type has no declared multi-valued attributes ... empty set if the managed type has no declared single-valued attributes. Returns: declared single
0

[ODB1] Chapter 8 - ObjectDB Server

="20" diskspace="20m" /> </dir> </user> Three attributes are changed. The empty address
0

[ODB1] Chapter 5 - JDO Connections

, empty database at that location. This behavior is an ObjectDB extension. JDO does not define a standard
0

[ODB1] Chapter 4 - JDO Metadata

field, empty collection, 0 size array, and so on). primary-key The primary-key attribute, defined in
0

[ODB1] Chapter 3 - Persistent Classes

interface with all the four methods, keeping the methods that are irrelevant empty. For example
0

[ODB1] Chapter 7 - JDOQL Queries

can even be constructed by an empty newQuery() form: Query newQuery(); However, a candidate collection

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?

  1. Search ObjectDB website
  2. Read the FAQ
  3. Follow the Tutorials
  4. View or post in the forum
  5. Search or file an issue
  6. Contact support