Package org.htmlunit.xpath.operations
Class Number
java.lang.Object
org.htmlunit.xpath.Expression
org.htmlunit.xpath.operations.UnaryOperation
org.htmlunit.xpath.operations.Number
- All Implemented Interfaces:
SourceLocator
,ExpressionNode
,XPathVisitable
The 'number()' operation expression executer.
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Field Summary
Fields inherited from class org.htmlunit.xpath.operations.UnaryOperation
m_right
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptiondouble
num
(XPathContext xctxt) Evaluate expression to a number.Apply the operation to two operands, and return the result.Methods inherited from class org.htmlunit.xpath.operations.UnaryOperation
callVisitors, canTraverseOutsideSubtree, deepEquals, execute, setRight
Methods inherited from class org.htmlunit.xpath.Expression
asIterator, asNode, assertion, bool, error, execute, execute, execute, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isSameClass, isStableNumber
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Constructor Details
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Number
public Number()
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Method Details
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operate
Apply the operation to two operands, and return the result.- Specified by:
operate
in classUnaryOperation
- 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
- in case of error
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num
Evaluate expression to a number.- Overrides:
num
in classExpression
- Parameters:
xctxt
- The XPath runtime context.- Returns:
- The expression evaluated as a double.
- Throws:
TransformerException
- if any
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