Package org.htmlunit.xpath.patterns
Class UnionPattern
- java.lang.Object
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- org.htmlunit.xpath.Expression
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- org.htmlunit.xpath.patterns.UnionPattern
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- All Implemented Interfaces:
javax.xml.transform.SourceLocator
,ExpressionNode
,XPathVisitable
public class UnionPattern extends Expression
This class represents a union pattern, which can have multiple individual StepPattern patterns.
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Field Summary
Fields Modifier and Type Field Description private StepPattern[]
patterns_
Array of the contained step patterns to be tested.
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Constructor Summary
Constructors Constructor Description UnionPattern()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
callVisitors(XPathVisitor visitor)
This will traverse the hierarchy, calling the visitor for each member.boolean
canTraverseOutsideSubtree()
Tell if this expression or it's subexpressions can traverse outside the current subtree.boolean
deepEquals(Expression expr)
Compare this object with another object and see if they are equal, include the sub heararchy.XObject
execute(XPathContext xctxt)
Execute an expression in the XPath runtime context, and return the result of the expression.void
setPatterns(StepPattern[] patterns)
Set the contained step patterns to be tested.-
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, num
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Field Detail
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patterns_
private StepPattern[] patterns_
Array of the contained step patterns to be tested.
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Method Detail
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canTraverseOutsideSubtree
public boolean canTraverseOutsideSubtree()
Tell if this expression or it's subexpressions can traverse outside the current subtree.- Overrides:
canTraverseOutsideSubtree
in classExpression
- Returns:
- true if traversal outside the context node's subtree can occur.
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setPatterns
public void setPatterns(StepPattern[] patterns)
Set the contained step patterns to be tested.- Parameters:
patterns
- the contained step patterns to be tested.
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execute
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
Execute an expression in the XPath runtime context, and return the result of the expression.- Specified by:
execute
in classExpression
- Parameters:
xctxt
- The XPath runtime context.- Returns:
- The result of the expression in the form of a
XObject
. - Throws:
javax.xml.transform.TransformerException
- if a runtime exception occurs.
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callVisitors
public void callVisitors(XPathVisitor visitor)
This will traverse the hierarchy, calling the visitor for each member. If the called visitor method returns false, the subtree should not be called.- Parameters:
visitor
- The visitor whose appropriate method will be called.
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deepEquals
public boolean deepEquals(Expression expr)
Compare this object with another object and see if they are equal, include the sub heararchy.- Specified by:
deepEquals
in classExpression
- Parameters:
expr
- Another expression object.- Returns:
- true if this objects class and the expr object's class are the same, and the data contained within both objects are considered equal.
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