using system; using system.io; using system.xml; using system.xml.query; using system.data.sqlxml; namespace xquery{ public class xquerysample{ public static void main(string[] args) { system.xml.xmldatasourceresolver ds = new system.xml.xmldatasourceresolver (); ds.add("bookstore","books.xml"); streamwriter writer=new streamwriter("output.xml"); string [email protected]"<bookstore> { for $b in document('bookstore')/bookstore/book where $b/@genre='philosophy' and $b/@publicationdate='1991' return $b/title } </bookstore>"; xqueryprocessor xp = new xqueryprocessor (); xp.compile(query); xp.execute(ds, writer); writer.close(); } } }
books.xml
<?xml version="1.0" encoding="utf-8"?> <!-- this file represents a fragment of a bookstore database --> <bookstore> <book genre="autobiography" publicationdate="1981" isbn="1-861-11-0"> <title>the autobiography of benjamin franklin</title> <author> <first-name>benjamin</first-name> <last-name>franklin</last-name> </author> <price>8.99</price> </book> <book genre="novel" publicationdate="1967" isbn="0-201-63361-2"> <title>the confidence man</title> <author> <first-name>herman</first-name> <last-name>melville</last-name> </author> <price>11.99</price> </book> <book genre="philosophy" publicationdate="1991" isbn="1-861001-57-6"> <title>the gorgias</title> <author> <name>plato</name> </author> <price>9.99</price> </book> </bookstore>
