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| + | ===== The <port> Element ===== | ||
| + | ==== Definition and Usage ==== | ||
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| + | Composite nodes of NCL, represented by [[body|<body>]], [[context|<context>]], and | ||
| + | [[switch|<switch>]] elements, encapsulates their child components. Interfaces of | ||
| + | child components are not visible to relationships defined outside of the | ||
| + | composite node, unless these interfaces are externalized, using the | ||
| + | [[port|<port>]] or [[switchport|<switchPort>]] elements. | ||
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| + | The [[port|<port>]] element specifies a composite node port with its respective | ||
| + | mapping to an interface (//interface// attribute) of one of its | ||
| + | components (specified by the //component// attribute). As usual, if the | ||
| + | //interface// attribute is not specified, the //whole content | ||
| + | anchor// is assumed. | ||
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| + | ==== Syntax ==== | ||
| + | ^ Element ^ Attributes ^ Content ^ Parent ^ | ||
| + | | [[port|<port>]] | __//id//__, __//component//__, //interface// | -- | [[context|<context>]] or [[body|<body>]] | | ||
| + | ==== Attributes ==== | ||
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| + | ^ Name ^ Value ^ Description ^ | ||
| + | | //id// | It may receive any string value that begins with a letter or an underscore and that only contains letters, digits, <".">, and <"_">. | The //id// attribute uniquely identifies the element within a document. | | ||
| + | | //component// | IDREF. | The //component// attribute identifies a child element of the composition, which may be a media object or another composite-object, through its //id// value. | | ||
| + | | //interface// | <html><p></html>String.<html></p></html><html><p></html>The default value is the whole content anchor.<html></p></html> | The //interface// attribute uniquely identifies an interface ([[area|<area>]], [[property|<property>]], [[port|<port>]], or [[switchport|<switchPort>]]) of a child element of the composition, through its //id// or //name// value. Defaults to the whole content anchor of the referred component. | | ||
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