Fast Object Database for Java - with JPA/JDO support

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javax.persistence.metamodel.ManagedType

- if attribute of the given name is not present in the managed type Since: JPA 2.0 Set< Attribute ... : IllegalArgumentException - if attribute of the given name is not declared in the managed type Since: JPA 2.0 Set ... the attributes declared by the managed type. Returns empty set if the managed type has no declared
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javax.persistence.metamodel.EmbeddableType

: IllegalArgumentException - if attribute of the given name is not present in the managed type Since: JPA 2.0 Set ... : IllegalArgumentException - if attribute of the given name is not declared in the managed type Since: JPA 2.0 Set ... the attributes declared by the managed type. Returns empty set if the managed type has no declared
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javax.persistence.criteria.SetJoin

>, From, Join, Path, PluralJoinSet,E>, Selection, TupleElement The SetJoin ... collection that has been specified as a java.util.Set. Since: JPA 2.0 Selection alias(String name ... Since: JPA 2.0 Set< Fetch> getFetches() Return the fetch joins that have been made from this type
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ORDER BY clause (JPQL / Criteria API)

provides methods for setting the ORDER BY clause. For example, the following JPQL query: SELECT c FROM ... "))); Unlike other methods for setting criteria query clauses - the orderBy method takes a variable number
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Detached Entity Objects

setting, when an Employee instance is detached the operation is automatically cascaded to the referenced ... setting, when an Employee instance is merged the operation is automatically cascaded to the referenced
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JPA Metamodel API

) in the persistent object model are represented by the following sets of interfaces and enum types ... the above sets extend the Bindable interface, which may be used in defining criteria query variables in
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Step 5: Add a JSP Page

the request's guestDao attribute that is set by the controller in the previous step). The next step (and the last in this tutorial) is setting the Spring XML configuration.
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Step 5: Add a JSP Page

that have already signed (which are retrieved from the request's guestDao attribute that is set by the controller in the previous step). The next step (and the last in this tutorial) is setting the Spring XML configuration.
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JPA Query Structure (JPQL / Criteria)

FROM ... [WHERE ...] UPDATE ... SET ... [WHERE ...] Besides a few exceptions, JPQL is case ... on how to set criteria query clauses are provided as follows: Criteria SELECT (select, distinct, multiselect
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JPA Annotations for Access Modes

Persistence fields can either be accessed by JPA directly (as fields) or indirectly (as properties and get/set methods). JPA 2 provides an annotation and an enum for setting the access mode: More details are provided in chapter 2 of the ObjectDB manual.

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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