org.apache.xpath.operations
Class Number
java.lang.Object
org.apache.xpath.Expression
org.apache.xpath.operations.UnaryOperation
org.apache.xpath.operations.Number
- All Implemented Interfaces:
- Serializable, SourceLocator, ExpressionNode, ExpressionOwner, XPathVisitable
public class Number
- extends UnaryOperation
The 'number()' operation expression executer.
- See Also:
- Serialized Form
Method Summary |
double |
num(XPathContext xctxt)
Evaluate this operation directly to a double. |
XObject |
operate(XObject right)
Apply the operation to two operands, and return the result. |
Methods inherited from class org.apache.xpath.Expression |
asIterator, asIteratorRaw, asNode, assertion, bool, error, execute, execute, execute, executeCharsToContentHandler, exprAddChild, exprGetChild, exprGetNumChildren, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isNodesetExpr, isStableNumber, warn, xstr |
Number
public Number()
operate
public XObject operate(XObject right)
throws TransformerException
- Apply the operation to two operands, and return the result.
- Specified by:
operate
in class UnaryOperation
- Parameters:
right
- non-null reference to the evaluated right operand.
- Returns:
- non-null reference to the XObject that represents the result of the operation.
- Throws:
TransformerException
num
public double num(XPathContext xctxt)
throws TransformerException
- Evaluate this operation directly to a double.
- Overrides:
num
in class Expression
- Parameters:
xctxt
- The runtime execution context.
- Returns:
- The result of the operation as a double.
- Throws:
TransformerException
Copyright ? 2005 Apache XML Project. All Rights Reserved.