Package org.htmlunit.xpath.operations
Class Bool
java.lang.Object
org.htmlunit.xpath.Expression
org.htmlunit.xpath.operations.UnaryOperation
org.htmlunit.xpath.operations.Bool
- All Implemented Interfaces:
SourceLocator
,ExpressionNode
,XPathVisitable
The 'boolean()' 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 TypeMethodDescriptionboolean
bool
(XPathContext xctxt) Evaluate expression to a boolean.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, error, execute, execute, execute, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isSameClass, isStableNumber, num
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Constructor Details
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Bool
public Bool()
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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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bool
Evaluate expression to a boolean.- Overrides:
bool
in classExpression
- Parameters:
xctxt
- The XPath runtime context.- Returns:
- false
- Throws:
TransformerException
- if any
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