Java Doc for NumberFn.java in  » XML » saxonb » net » sf » saxon » functions » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » XML » saxonb » net.sf.saxon.functions   Source Cross Reference   Class Diagram   Java Document (Java Doc)   net.sf.saxon.functions.SystemFunction    net.sf.saxon.functions.NumberFn NumberFn public class NumberFn extends SystemFunction implements MappingFunction(Code) Implements the XPath number() function. This can also be used as a mapping function in a MappingIterator to map a sequence of values to numbers. Method Summary public static  DoubleValue convert(AtomicValue value)      Static method to perform the same conversion as the number() function. public  Item evaluateItem(XPathContext context)      public  Object map(Item item, XPathContext context)      public  Expression simplify(StaticContext env)      Simplify and validate. Method Detail convert public static DoubleValue convert(AtomicValue value)(Code) Static method to perform the same conversion as the number() function. This is different from the convert(Type.DOUBLE) in that it produces NaN rather than an error for non-numeric operands. evaluateItem public Item evaluateItem(XPathContext context) throws XPathException(Code) Evaluate in a general context map public Object map(Item item, XPathContext context) throws XPathException(Code) Mapping function for use when converting a sequence of atomic values to doubles using the rules of the number() function simplify public Expression simplify(StaticContext env) throws XPathException(Code) Simplify and validate. This is a pure function so it can be simplified in advance if the arguments are known Fields inherited from net.sf.saxon.functions.SystemFunction protected int operation(Code)(Java Doc) Methods inherited from net.sf.saxon.functions.SystemFunction final protected void addContextDocumentArgument(int pos, String augmentedName) throws StaticError(Code)(Java Doc) public void checkArguments(StaticContext env) throws XPathException(Code)(Java Doc) public int computeCardinality()(Code)(Java Doc) public int computeSpecialProperties()(Code)(Java Doc) public void display(int level, NamePool pool, PrintStream out)(Code)(Java Doc) protected StandardFunction.Entry getDetails()(Code)(Java Doc) public String getErrorCodeForTypeErrors()(Code)(Java Doc) public ItemType getItemType(TypeHierarchy th)(Code)(Java Doc) protected SequenceType getRequiredType(int arg)(Code)(Java Doc) public static void main(String[] args) throws Exception(Code)(Java Doc) public static FunctionCall makeSystemFunction(String name, int arity, NamePool pool)(Code)(Java Doc) public void setDetails(StandardFunction.Entry entry)(Code)(Java Doc) final protected void useContextItemAsDefault()(Code)(Java Doc)