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he / tags / 9.2.0.5 / hej / net / sf / saxon / tree / package.html @ 90ee0d1a

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<title>Package overview for net.sf.saxon.tree</title>
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<p>This package defines the implementation of the so-called "standard tree" structure. This
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structure can be used to represent both the source document and the stylesheet.
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It is no longer the default structure for source documents, but is always used for
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stylesheets and for schema documents, because it allows each element to be represented
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by a subclass of <code>Element</code> with application-specific functionality.</p>
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<p>The classes represent the various kinds of node on the tree. Most of them
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are not visible outside the package, with the notable exception of ElementImpl,
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which can be subclassed to contain properties for a particular kind of element.
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This capability is exploited especially in the stylesheet tree.</p>
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<p>As well as classes representing nodes, there are classes representing
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iterators over the various XPath axes, for example <code>ChildEnumeration</code>
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and <code>PrecedingEnumeration</code>.</p>
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<p>The <code>TreeBuilder</code> performs the work of constructing a tree, from a
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sequence of SAX-like <code>Receiver</code> events.</p>
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<p>The package also contains some helper classes such as <code>SystemIdMap</code>
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and <code>LineNumberMap</code> that are used also by the TinyTree implementation.</p>
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<p align="center"><i>Michael H. Kay<br/>
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Saxonica Limited<br/>
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9 February 2005</i></p>
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