public class UnionPattern extends Pattern
Modifier and Type | Field and Description |
---|---|
protected Pattern |
p1 |
protected Pattern |
p2 |
Constructor and Description |
---|
UnionPattern(Pattern p1,
Pattern p2)
Constructor
|
Modifier and Type | Method and Description |
---|---|
int |
allocateSlots(StaticContext env,
SlotManager slotManager,
int nextFree)
Allocate slots to any variables used within the pattern
|
Pattern |
analyze(ExpressionVisitor visitor,
ItemType contextItemType)
Type-check the pattern.
|
boolean |
equals(java.lang.Object other)
Determine whether this pattern is the same as another pattern
|
void |
gatherComponentPatterns(java.util.Set set)
Gather the component (non-union) patterns of this union pattern
|
int |
getDependencies()
Get the dependencies of the pattern.
|
Pattern |
getLHS()
Get the LHS of the union
|
int |
getNodeKind()
Determine the types of nodes to which this pattern applies.
|
NodeTest |
getNodeTest()
Get a NodeTest that all the nodes matching this pattern must satisfy
|
Pattern |
getRHS()
Get the RHS of the union
|
int |
hashCode()
Hashcode supporting equals()
|
java.util.Iterator |
iterateSubExpressions()
Iterate over the subexpressions within this pattern
|
boolean |
matches(NodeInfo e,
XPathContext context)
Determine if the supplied node matches the pattern
|
void |
promote(PromotionOffer offer)
Offer promotion for subexpressions within this pattern.
|
boolean |
replaceSubExpression(Expression original,
Expression replacement)
Replace one subexpression by a replacement subexpression
|
void |
setExecutable(Executable executable)
Set the executable containing this pattern
|
void |
setLineNumber(int lineNumber)
Override method to set the system ID, so it's set on both halves
|
void |
setOriginalText(java.lang.String pattern)
Set the original text
|
void |
setSystemId(java.lang.String systemId)
Override method to set the system ID, so it's set on both halves
|
Pattern |
simplify(ExpressionVisitor visitor)
Simplify the pattern: perform any context-independent optimisations
|
getColumnNumber, getDefaultPriority, getExecutable, getFingerprint, getHostLanguage, getLineNumber, getLocationProvider, getPublicId, getSystemId, internalMatches, make, makeSearchExpression, selectNodes, toString
public void setExecutable(Executable executable)
setExecutable
in class Pattern
executable
- the executablepublic Pattern simplify(ExpressionVisitor visitor) throws XPathException
simplify
in class Pattern
visitor
- an expression visitorXPathException
public Pattern analyze(ExpressionVisitor visitor, ItemType contextItemType) throws XPathException
analyze
in class Pattern
visitor
- the expression visitorcontextItemType
- the type of the context item, if known, at the point where the pattern
is definedXPathException
public void setOriginalText(java.lang.String pattern)
setOriginalText
in class Pattern
pattern
- the original text of the patternpublic void promote(PromotionOffer offer) throws XPathException
Pattern
Unlike the corresponding method on Expression
, this method does not return anything:
it can make internal changes to the pattern, but cannot return a different pattern. Only certain
kinds of promotion are applicable within a pattern: specifically, promotions affecting local
variable references within the pattern.
promote
in class Pattern
offer
- details of the offer, for example the offer to move
expressions that don't depend on the context to an outer level in
the containing expressionXPathException
- if any error is detectedpublic boolean replaceSubExpression(Expression original, Expression replacement)
Container
replaceSubExpression
in interface Container
replaceSubExpression
in class Pattern
original
- the original subexpressionreplacement
- the replacement subexpressionpublic int allocateSlots(StaticContext env, SlotManager slotManager, int nextFree)
allocateSlots
in class Pattern
env
- the static context in the XSLT stylesheetslotManager
- nextFree
- the next slot that is free to be allocated @return the next slot that is free to be allocatedpublic void gatherComponentPatterns(java.util.Set set)
set
- the set into which the components will be addedpublic boolean matches(NodeInfo e, XPathContext context) throws XPathException
matches
in class Pattern
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().XPathException
public int getNodeKind()
getNodeKind
in class Pattern
public NodeTest getNodeTest()
getNodeTest
in class Pattern
public int getDependencies()
getDependencies
in class Pattern
public java.util.Iterator iterateSubExpressions()
iterateSubExpressions
in class Pattern
public Pattern getLHS()
public Pattern getRHS()
public void setSystemId(java.lang.String systemId)
setSystemId
in class Pattern
systemId
- the URI of the module containing the patternpublic void setLineNumber(int lineNumber)
setLineNumber
in class Pattern
lineNumber
- the line number of the pattern in the source modulepublic boolean equals(java.lang.Object other)
equals
in class java.lang.Object
other
- the other objectpublic int hashCode()
hashCode
in class java.lang.Object