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The library implements a number of standard APIs for XML parsing, including DOM, SAX and SAX2. The implementation is available in the Java , C++ and Perl programming languages. The name "Xerces" is believed to commemorate the extinct Xerces blue butterfly ( Glaucopsyche xerces ).
Unlike the DOM parser, the SAX parser does not create an in-memory representation of the XML document and so runs faster and uses less memory. Instead, the SAX parser informs clients of the XML document structure by invoking callbacks, that is, by invoking methods on an DefaultHandler instance provided to the parser.
The event-driven model of SAX is useful for XML parsing, but it does have certain drawbacks. Virtually any kind of XML validation requires access to the document in full. . The most trivial example is that an attribute declared in the DTD to be of type IDREF, requires that there be only one element in the document that uses the same value for an ID attribu
It makes it possible to read and write XML data using a programming language class library (e.g. C++, C#, Java), specifically created for a given XML data format. [1] Whilst it is possible to manually write a computer program to achieve this, XML data binding tools generate the source code to perform these tasks.
The curiously recurring template pattern (CRTP) is an idiom, originally in C++, in which a class X derives from a class template instantiation using X itself as a template argument. [1] More generally it is known as F-bound polymorphism , and it is a form of F -bounded quantification .
CodeSynthesis XSD is an XML Data Binding compiler for C++ developed by Code Synthesis and dual-licensed under the GNU GPL and a proprietary license. Given an XML instance specification (), it generates C++ classes that represent the given vocabulary as well as parsing and serialization code.
The following example shows how, in Java, a SAX parser may be created to parse some input source in which the org.apache.xml.resolver.tools.CatalogResolver is used to resolve external entities to locally cached instances. This resolver originates from Apache Xerces but is now included with the Sun Java runtime.
J. Jakarta EE; Jakarta Servlet; Template:Java; Template talk:Java; Java (programming language) Java annotation; Java API for XML Processing; Java class loader