Overview | Package | Class | Use | Tree | Deprecated | Index | Help
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

## org.apache.xpath.operations
Class Neg

    java.lang.Object
      |
      +--org.apache.xpath.Expression
            |
            +--org.apache.xpath.operations.UnaryOperation
                  |
                  +--org.apache.xpath.operations.Neg

public class Neg
extends UnaryOperation

The unary '-' operation expression executer.

See Also:
  Serialized Form

Constructor Summary
`Neg()`

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.operations.UnaryOperation
`callVisitors, canTraverseOutsideSubtree, deepEquals, execute, fixupVariables, getExpression, getOperand, setExpression, setRight`

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`

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### Neg

    public Neg()

Method Detail

### operate

    public XObject operate(XObject right)
                    throws TransformerException

  Apply the operation to two operands, and return the result.
  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 -
  Overrides:
    operate in class UnaryOperation

### num

    public double num(XPathContext xctxt)
               throws TransformerException

  Evaluate this operation directly to a double.
  Parameters:
    `xctxt` - The runtime execution context.
  Returns:
    The result of the operation as a double.
  Throws:
    TransformerException -
  Overrides:
    num in class Expression

Overview | Package | Class | Use | Tree | Deprecated | Index | Help
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

Copyright © 2006 Apache XML Project. All Rights Reserved.