Java Annotations

Java Annotations

• Were introduced in Java SE 5 (Sep, 2004)• Annotations are used to tell the compiler to

take additional actions• The @ sign is used to indicate the presence of

an annotated class, field or method (@IgnoreWarnings, @Path, etc..)

Java Persistence Architecture (JPA)

• JPA is a Java API specification that allows developers to describe low level database designs and behaviors using annotations in the Java code.

• Object Relational Mapping (ORM) is the concrete vendor specific implementation of JPA (i.e. – Hibernate, TopLink, etc.)

Java API for RESTful Web Services(JAX-RS)

• JAX-RS is the part of the Java EE standard that facilitates RESTful web services.

• RESTful behavior can be realized purely through the addition of JAX-RS Annotations

Java Architecture for XML Binding(JAXB)

• JAXB facilitates the use of annotations to describe the XML or JSON structure of an object architecture

JPA Annotations

• @Entity• @Table• @Column• @OneToMany• @ManyToOne• @JoinColumn• @Embeddable• @Embedded

• @Id• @NamedQueries• @NamedQuery• @SequenceGenerator• @GeneratedValue• @Enumerated• EnumType• @PersistenceContext• TypedQuery

http://docs.oracle.com/javaee/6/api/javax/persistence/Entity.html

http://docs.oracle.com/javaee/6/api/javax/persistence/Entity.html

http://docs.oracle.com/javaee/6/api/javax/persistence/Table.html

http://docs.oracle.com/javaee/6/api/javax/persistence/Column.html

http://docs.oracle.com/javaee/6/api/index.html?javax/persistence/OneToMany.html

http://docs.oracle.com/javaee/6/api/index.html?javax/persistence/ManyToOne.html

http://docs.oracle.com/javaee/6/api/javax/persistence/JoinColumn.html

http://docs.oracle.com/javaee/6/api/javax/persistence/Embeddable.html

http://docs.oracle.com/javaee/6/api/index.html?javax/persistence/Embedded.html

http://docs.oracle.com/javaee/6/api/javax/persistence/Id.html

http://docs.oracle.com/javaee/6/api/javax/persistence/NamedQueries.html

http://docs.oracle.com/javaee/6/api/javax/persistence/NamedQueries.html

http://docs.oracle.com/javaee/6/api/javax/persistence/NamedQuery.html

http://docs.oracle.com/javaee/6/api/javax/persistence/SequenceGenerator.html

http://docs.oracle.com/javaee/6/api/javax/persistence/GeneratedValue.html

http://docs.oracle.com/javaee/6/api/javax/persistence/Enumerated.html

http://docs.oracle.com/javaee/6/api/javax/persistence/EnumType.html

http://docs.oracle.com/javaee/6/api/javax/persistence/PersistenceContext.html

http://docs.oracle.com/javaee/6/api/javax/persistence/TypedQuery.html

JAX-RS Annotations

• @ApplicationPath• @Path• @PathParam• @QueryParam• @Produces• @Consumes

• @GET• @POST• @PUT• @DELETE

http://docs.oracle.com/javaee/6/api/javax/ws/rs/ApplicationPath.html

http://docs.oracle.com/javaee/6/api/javax/ws/rs/ApplicationPath.html

http://docs.oracle.com/javaee/6/api/javax/ws/rs/Path.html

http://docs.oracle.com/javaee/6/api/javax/ws/rs/PathParam.html

http://docs.oracle.com/javaee/6/api/javax/ws/rs/PathParam.html

http://docs.oracle.com/javaee/6/api/javax/ws/rs/QueryParam.html

http://docs.oracle.com/javaee/6/api/index.html?javax/persistence/EnumType.html

http://docs.oracle.com/javaee/6/api/javax/ws/rs/Consumes.html

http://docs.oracle.com/javaee/6/api/javax/ws/rs/GET.html

http://docs.oracle.com/javaee/6/api/index.html?javax/ws/rs/POST.html

http://docs.oracle.com/javaee/6/api/javax/ws/rs/PUT.html

http://docs.oracle.com/javaee/6/api/javax/ws/rs/DELETE.html

JAXB Annotations

• @XmlRootElement• @XmlElement• @XmlAccessorType• XmlAccessType• @XmlElementWrapper

http://docs.oracle.com/javaee/6/api/javax/xml/bind/annotation/XmlRootElement.html

http://docs.oracle.com/javaee/6/api/javax/xml/bind/annotation/XmlRootElement.html

http://docs.oracle.com/javaee/6/api/javax/xml/bind/annotation/XmlElement.html

http://docs.oracle.com/javaee/6/api/javax/xml/bind/annotation/XmlElement.html

http://docs.oracle.com/javaee/6/api/javax/xml/bind/annotation/XmlAccessorType.html

http://docs.oracle.com/javaee/6/api/javax/xml/bind/annotation/XmlAccessorType.html

http://docs.oracle.com/javaee/6/api/index.html?javax/xml/bind/annotation/XmlAccessType.html

http://docs.oracle.com/javaee/6/api/javax/xml/bind/annotation/XmlElementWrapper.html

The project

• https://git.psu.edu/ais-swe/web-conference

Running the VM

• Navigate to the directory you want the web-conference project installed

• git clone https://git.psu.edu/ais-swe/web-conference.git

• cd web-conference/ • git submodule init • git submodule update • cd web-conference-vagrant/ • vagrant up

https://git.psu.edu/ais-swe/web-conference.git

Java Annotations

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