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Attribute-oriented Programming
Attribute-oriented programming (@OP) is a technique for embedding metadata, namely attributes, within program code. Attribute-oriented programming in various languages Java With the inclusion of Metadata Facility for Java (JSR-175) into the J2SE 5.0 release it is possible to utilize attribute-oriented programming right out of the box. XDoclet library makes it possible to use attribute-oriented programming approach in earlier versions of Java. C# The C# language has supported attributes from its very first release. These attributes was used to give run-time information and are not used by a preprocessor. Currently with source generators, you can use attributes to drive generation of additional code at compile-time. UML The Unified Modeling Language (UML) supports a kind of attribute called stereotypes In social psychology, a stereotype is a generalized belief about a particular category of people. It is an expectation that people might have about every person of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Attribute (computing)
In computing, an attribute is a specification that defines a property of an object, element, or file. It may also refer to or set the specific value for a given instance of such. For clarity, attributes should more correctly be considered metadata. An attribute is frequently and generally a property of a property. However, in actual usage, the term attribute can and is often treated as equivalent to a property depending on the technology being discussed. An attribute of an object usually consists of a name and a value; of an element, a type or class name; of a file, a name and extension. * Each named attribute has an associated set of rules called operations: one doesn't sum characters or manipulate and process an integer array as an image object—one doesn't process text as type floating point (decimal numbers). * It follows that an object definition can be extended by imposing data typing: a representation format, a default value, and legal operations (rules) and restrict ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metadata Facility For Java
The Metadata Facility for Java is a specification for Java that defines an API for annotating fields, methods, and classes as having particular attributes that indicate they should be processed in specific ways by development tools, deployment tools, or run-time libraries. The specification was developed under the Java Community Process as JSR 175, and was released as a part of J2SE 5.0 (Tiger). External links JSR 175''A Metadata Facility for the Java Programming Language'' JSR 250'' Common Annotations'' (defines common Java SE and Java EE annotations) JSR 269''Pluggable Annotation Processing API'' (defines a pluggable interface for developing build-time annotation processors) Java Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's List ... Java specification requests {{prog-la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Java Platform, Standard Edition
Java Platform, Standard Edition (Java SE) is a computing platform for development and deployment of portable code for desktop and server environments. Java SE was formerly known as Java 2 Platform, Standard Edition (J2SE). The platform uses Java programming language and is part of the Java software-platform family. Java SE defines a range of general-purpose APIs—such as Java APIs for the Java Class Library—and also includes the Java Language Specification and the Java Virtual Machine Specification. OpenJDK is the official reference implementation since version 7. Nomenclature, standards and specifications The platform was known as ''Java 2 Platform, Standard Edition'' or ''J2SE'' from version 1.2, until the name was changed to ''Java Platform, Standard Edition'' or ''Java SE'' in version 1.5. The "SE" is used to distinguish the base platform from the Enterprise Edition (Java EE) and Micro Edition (Java ME) platforms. The "2" was originally intended to emphasize the maj ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XDoclet
XDoclet is an open-source code generation library that enables Attribute-oriented programming for Java via insertion of special Javadoc tags. It comes with a library of predefined tags, which simplify coding for various technologies: Java EE, Web services, Portlet The Java Portlet Specification defines a contract between the portlet container and portlets and provides a convenient programming model for Java portlet developers. Portlets are pluggable user interface software components that are managed and ... etc. Example A typical XDoclet comment might look like this: /**** * This is the Account entity bean. It is an example of how to use the * EJBDoclet tags. * * @see Customer * * @ejb.bean * name="bank/Account" * type="CMP" * jndi-name="ejb/bank/Account" * local-jndi-name="ejb/bank/LocalAccount" * primkey-field="id" * schema = "Customers" * * @ejb.finder * signature="java.util.Collection findAll()" * unche ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unified Modeling Language
The Unified Modeling Language (UML) is a general-purpose, developmental modeling language in the field of software engineering that is intended to provide a standard way to visualize the design of a system. The creation of UML was originally motivated by the desire to standardize the disparate notational systems and approaches to software design. It was developed at Rational Software in 1994–1995, with further development led by them through 1996. In 1997, UML was adopted as a standard by the Object Management Group (OMG), and has been managed by this organization ever since. In 2005, UML was also published by the International Organization for Standardization (ISO) as an approved ISO standard. Since then the standard has been periodically revised to cover the latest revision of UML. In software engineering, most practitioners do not use UML, but instead produce informal hand drawn diagrams; these diagrams, however, often include elements from UML. History Before UML 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stereotype (UML)
A stereotype is one of three types of extensibility mechanisms in the Unified Modeling Language (UML), the other two being tags and constraints. They allow designers to extend the vocabulary of UML in order to create new model elements, derived from existing ones, but that have specific properties that are suitable for a particular domain or otherwise specialized usage. The nomenclature is derived from the original meaning of stereotype, used in printing. For example, when modeling a network you might need to have symbols for representing routers and hubs. By using stereotyped nodes you can make these things appear as primitive building blocks. Graphically, a stereotype is rendered as a name enclosed by guillemets (« » or, if guillemets proper are unavailable, ) and placed above the name of another element. In addition or alternatively it may be indicated by a specific icon. The icon image may even replace the entire UML symbol. For instance, in a class diagram stereotypes can b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hack (programming Language)
Hack is a programming language for the HipHop Virtual Machine (HHVM), created by Meta as a dialect of PHP. The language implementation is open-source, licensed under the MIT License. Hack allows programmers to use both dynamic typing and static typing. This kind of a type system is called gradual typing, which is also implemented in other programming languages such as ActionScript. Hack's type system allows types to be specified for function arguments, function return values, and class properties; however, types of local variables are always inferred and cannot be specified. History Hack was introduced on March 20, 2014. Before the announcement of the new programming language, Facebook had already implemented the code and tested it on a large portion of its web site. Features Hack is designed to interoperate seamlessly with PHP, which is a widely used open-source scripting language that has a focus on web development and can be embedded into HTML. A majority of valid PHP scr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
