Package net.sf.saxon.pattern
Class UnionPattern
- java.lang.Object
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- net.sf.saxon.pattern.Pattern
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- net.sf.saxon.pattern.UnionPattern
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- All Implemented Interfaces:
java.io.Serializable
,javax.xml.transform.SourceLocator
,Container
public class UnionPattern extends Pattern
A pattern formed as the union (or) of two other patterns- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description UnionPattern(Pattern p1, Pattern p2)
Constructor
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Pattern
analyze(StaticContext env, ItemType contextItemType)
Type-check the pattern.Pattern
getLHS()
Get the LHS of the unionint
getNodeKind()
Determine the types of nodes to which this pattern applies.NodeTest
getNodeTest()
Get a NodeTest that all the nodes matching this pattern must satisfyPattern
getRHS()
Get the RHS of the unionboolean
matches(NodeInfo e, XPathContext context)
Determine if the supplied node matches the patternvoid
setLineNumber(int lineNumber)
Override method to set the system ID, so it's set on both halvesvoid
setOriginalText(java.lang.String pattern)
Set the original textvoid
setSystemId(java.lang.String systemId)
Override method to set the system ID, so it's set on both halvesPattern
simplify(StaticContext env)
Simplify the pattern: perform any context-independent optimisations-
Methods inherited from class net.sf.saxon.pattern.Pattern
getColumnNumber, getDefaultPriority, getDependencies, getExecutable, getFingerprint, getHostLanguage, getLineNumber, getLocationProvider, getPublicId, getSystemId, internalMatches, iterateSubExpressions, make, promote, replaceSubExpression, setExecutable, toString
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Method Detail
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simplify
public Pattern simplify(StaticContext env) throws XPathException
Simplify the pattern: perform any context-independent optimisations- Overrides:
simplify
in classPattern
- Returns:
- the optimised Pattern
- Throws:
XPathException
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analyze
public Pattern analyze(StaticContext env, ItemType contextItemType) throws XPathException
Type-check the pattern. This is only needed for patterns that contain variable references or function calls.- Overrides:
analyze
in classPattern
- Returns:
- the optimised Pattern
- Throws:
XPathException
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setOriginalText
public void setOriginalText(java.lang.String pattern)
Set the original text- Overrides:
setOriginalText
in classPattern
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matches
public boolean matches(NodeInfo e, XPathContext context) throws XPathException
Determine if the supplied node matches the pattern- Specified by:
matches
in classPattern
- Parameters:
e
- the node to be comparedcontext
- The dynamic context. Only relevant if the pattern uses variables, or contains calls on functions such as document() or key().- Returns:
- true if the node matches either of the operand patterns
- Throws:
XPathException
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getNodeKind
public int getNodeKind()
Determine the types of nodes to which this pattern applies. Used for optimisation. For patterns that match nodes of several types, return Node.NODE- Overrides:
getNodeKind
in classPattern
- Returns:
- the type of node matched by this pattern. e.g. Node.ELEMENT or Node.TEXT
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getNodeTest
public NodeTest getNodeTest()
Get a NodeTest that all the nodes matching this pattern must satisfy- Specified by:
getNodeTest
in classPattern
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getLHS
public Pattern getLHS()
Get the LHS of the union
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getRHS
public Pattern getRHS()
Get the RHS of the union
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setSystemId
public void setSystemId(java.lang.String systemId)
Override method to set the system ID, so it's set on both halves- Overrides:
setSystemId
in classPattern
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setLineNumber
public void setLineNumber(int lineNumber)
Override method to set the system ID, so it's set on both halves- Overrides:
setLineNumber
in classPattern
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