Package org.apache.xpath.objects
Class XRTreeFragSelectWrapper
java.lang.Object
org.apache.xpath.Expression
org.apache.xpath.objects.XObject
org.apache.xpath.objects.XRTreeFrag
org.apache.xpath.objects.XRTreeFragSelectWrapper
- All Implemented Interfaces:
Serializable
,Cloneable
,SourceLocator
,ExpressionNode
,XPathVisitable
This class makes an select statement act like an result tree fragment.
- See Also:
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Field Summary
Fields inherited from class org.apache.xpath.objects.XObject
CLASS_BOOLEAN, CLASS_NODESET, CLASS_NULL, CLASS_NUMBER, CLASS_RTREEFRAG, CLASS_STRING, CLASS_UNKNOWN, CLASS_UNRESOLVEDVARIABLE
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionCast result object to a DTMIterator.void
detach()
Detaches theDTMIterator
from the set which it iterated over, releasing any computational resources and placing the iterator in the INVALID state.execute
(XPathContext xctxt) For support of literal objects in xpaths.void
fixupVariables
(Vector vars, int globalsSize) This function is used to fixup variables from QNames to stack frame indexes at stylesheet build time.int
getType()
Tell what kind of class this is.double
num()
Cast result object to a number.int
rtf()
Cast result object to a result tree fragment.str()
Cast result object to a string.xstr()
Cast result object to an XMLString.Methods inherited from class org.apache.xpath.objects.XRTreeFrag
allowDetachToRelease, appendToFsb, bool, convertToNodeset, equals, getTypeString, object
Methods inherited from class org.apache.xpath.objects.XObject
boolWithSideEffects, callVisitors, castToType, create, create, deepEquals, destruct, dispatchCharactersEvents, getFresh, greaterThan, greaterThanOrEqual, iter, lessThan, lessThanOrEqual, mutableNodeset, nodelist, nodeset, notEquals, numWithSideEffects, reset, rtf, rtree, rtree, toString
Methods inherited from class org.apache.xpath.Expression
asIterator, asIteratorRaw, asNode, assertion, bool, canTraverseOutsideSubtree, error, execute, execute, execute, executeCharsToContentHandler, exprAddChild, exprGetChild, exprGetNumChildren, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isNodesetExpr, isStableNumber, num, warn, xstr
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Constructor Details
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XRTreeFragSelectWrapper
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Method Details
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fixupVariables
This function is used to fixup variables from QNames to stack frame indexes at stylesheet build time.- Overrides:
fixupVariables
in classXObject
- Parameters:
vars
- List of QNames that correspond to variables. This list should be searched backwards for the first qualified name that corresponds to the variable reference qname. The position of the QName in the vector from the start of the vector will be its position in the stack frame (but variables above the globalsTop value will need to be offset to the current stack frame).
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execute
For support of literal objects in xpaths.- Overrides:
execute
in classXObject
- Parameters:
xctxt
- The XPath execution context.- Returns:
- the result of executing the select expression
- Throws:
TransformerException
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detach
public void detach()Detaches theDTMIterator
from the set which it iterated over, releasing any computational resources and placing the iterator in the INVALID state. Afterdetach
has been invoked, calls tonextNode
orpreviousNode
will raise a runtime exception. In general, detach should only be called once on the object.- Overrides:
detach
in classXRTreeFrag
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num
Cast result object to a number.- Overrides:
num
in classXRTreeFrag
- Returns:
- The result tree fragment as a number or NaN
- Throws:
TransformerException
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xstr
Cast result object to an XMLString.- Overrides:
xstr
in classXRTreeFrag
- Returns:
- The document fragment node data or the empty string.
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str
Cast result object to a string.- Overrides:
str
in classXRTreeFrag
- Returns:
- The document fragment node data or the empty string.
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getType
public int getType()Tell what kind of class this is.- Overrides:
getType
in classXRTreeFrag
- Returns:
- the string type
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rtf
public int rtf()Cast result object to a result tree fragment.- Overrides:
rtf
in classXRTreeFrag
- Returns:
- The document fragment this wraps
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asNodeIterator
Cast result object to a DTMIterator.- Overrides:
asNodeIterator
in classXRTreeFrag
- Returns:
- The document fragment as a DTMIterator
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