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java.lang.Object org.apache.xpath.Expression org.apache.xpath.patterns.NodeTest org.apache.xpath.axes.PredicatedNodeTest org.apache.xpath.axes.LocPathIterator org.apache.xpath.axes.FilterExprIteratorSimple
public class FilterExprIteratorSimple
Class to use for one-step iteration that doesn't have a predicate, and doesn't need to set the context.
Nested Class Summary | |
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(package private) class |
FilterExprIteratorSimple.filterExprOwner
|
Nested classes/interfaces inherited from class org.apache.xpath.axes.PredicatedNodeTest |
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PredicatedNodeTest.PredOwner |
Field Summary | |
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private boolean |
m_canDetachNodeset
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private Expression |
m_expr
The contained expression. |
private XNodeSet |
m_exprObj
The result of executing m_expr. |
private boolean |
m_mustHardReset
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(package private) static long |
serialVersionUID
|
Fields inherited from class org.apache.xpath.axes.LocPathIterator |
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m_allowDetach, m_cdtm, m_clones, m_context, m_currentContextNode, m_execContext, m_lastFetched, m_length, m_pos, m_stackFrame |
Fields inherited from class org.apache.xpath.axes.PredicatedNodeTest |
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DEBUG_PREDICATECOUNTING, m_foundLast, m_lpi, m_predCount, m_predicateIndex, m_proximityPositions |
Fields inherited from class org.apache.xpath.patterns.NodeTest |
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m_name, m_whatToShow, SCORE_NODETEST, SCORE_NONE, SCORE_NSWILD, SCORE_OTHER, SCORE_QNAME, SHOW_BYFUNCTION, SUPPORTS_PRE_STRIPPING, WILD |
Fields inherited from interface org.apache.xml.dtm.DTMIterator |
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FILTER_ACCEPT, FILTER_REJECT, FILTER_SKIP |
Constructor Summary | |
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FilterExprIteratorSimple()
Create a FilterExprIteratorSimple object. |
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FilterExprIteratorSimple(Expression expr)
Create a FilterExprIteratorSimple object. |
Method Summary | |
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void |
callPredicateVisitors(XPathVisitor visitor)
This will traverse the heararchy, calling the visitor for each member. |
boolean |
deepEquals(Expression expr)
Compare this object with another object and see if they are equal, include the sub heararchy. |
void |
detach()
Detaches the walker from the set which it iterated over, releasing any computational resources and placing the iterator in the INVALID state. |
static XNodeSet |
executeFilterExpr(int context,
XPathContext xctxt,
PrefixResolver prefixResolver,
boolean isTopLevel,
int stackFrame,
Expression expr)
Execute the expression. |
void |
fixupVariables(java.util.Vector vars,
int globalsSize)
This function is used to fixup variables from QNames to stack frame indexes at stylesheet build time. |
int |
getAnalysisBits()
Get the analysis bits for this walker, as defined in the WalkerFactory. |
int |
getAxis()
Returns the axis being iterated, if it is known. |
Expression |
getInnerExpression()
Get the inner contained expression of this filter. |
boolean |
isDocOrdered()
Returns true if all the nodes in the iteration well be returned in document order. |
int |
nextNode()
Returns the next node in the set and advances the position of the iterator in the set. |
void |
setInnerExpression(Expression expr)
Set the inner contained expression of this filter. |
void |
setRoot(int context,
java.lang.Object environment)
Initialize the context values for this expression after it is cloned. |
Methods inherited from class org.apache.xpath.axes.LocPathIterator |
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allowDetachToRelease, asIterator, asNode, bool, callVisitors, cloneWithReset, execute, executeCharsToContentHandler, getContext, getCurrentContextNode, getCurrentNode, getCurrentPos, getDTM, getDTMManager, getExpandEntityReferences, getFilter, getFoundLast, getIsTopLevel, getLastPos, getLength, getPrefixResolver, getRoot, getWhatToShow, getXPathContext, incrementCurrentPos, isFresh, isMutable, isNodesetExpr, item, previousNode, reset, returnNextNode, runTo, setCurrentContextNode, setCurrentPos, setEnvironment, setIsTopLevel, setItem, setNextPosition, setShouldCacheNodes, size |
Methods inherited from class org.apache.xpath.axes.PredicatedNodeTest |
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acceptNode, canTraverseOutsideSubtree, clone, countProximityPosition, executePredicates, getLocPathIterator, getPredicate, getPredicateCount, getPredicateIndex, getProximityPosition, getProximityPosition, getProximityPosition, initPredicateInfo, initProximityPosition, isReverseAxes, nodeToString, resetProximityPositions, setLocPathIterator, setPredicateCount |
Methods inherited from class org.apache.xpath.patterns.NodeTest |
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calcScore, debugWhatToShow, execute, execute, getDefaultScore, getLocalName, getNamespace, getNodeTypeTest, getStaticScore, initNodeTest, initNodeTest, setLocalName, setNamespace, setStaticScore, setWhatToShow |
Methods inherited from class org.apache.xpath.Expression |
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asIteratorRaw, assertion, error, execute, exprAddChild, exprGetChild, exprGetNumChildren, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isSameClass, isStableNumber, num, warn, xstr |
Methods inherited from class java.lang.Object |
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equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface org.apache.xml.dtm.DTMIterator |
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clone |
Field Detail |
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static final long serialVersionUID
private Expression m_expr
private transient XNodeSet m_exprObj
private boolean m_mustHardReset
private boolean m_canDetachNodeset
Constructor Detail |
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public FilterExprIteratorSimple()
public FilterExprIteratorSimple(Expression expr)
Method Detail |
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public void setRoot(int context, java.lang.Object environment)
setRoot
in interface DTMIterator
setRoot
in class LocPathIterator
context
- The XPath runtime context for this
transformation.environment
- The environment object.
The environment in which this iterator operates, which should provide:
At this time the exact implementation of this environment is application dependent. Probably a proper interface will be created fairly soon.
public static XNodeSet executeFilterExpr(int context, XPathContext xctxt, PrefixResolver prefixResolver, boolean isTopLevel, int stackFrame, Expression expr) throws WrappedRuntimeException
WrappedRuntimeException
public int nextNode()
nextNode
in interface DTMIterator
nextNode
in class LocPathIterator
Node
in the set being iterated over, or
null
if there are no more members in that set.public void detach()
detach
in interface DTMIterator
detach
in class LocPathIterator
public void fixupVariables(java.util.Vector vars, int globalsSize)
fixupVariables
in class PredicatedNodeTest
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).public Expression getInnerExpression()
public void setInnerExpression(Expression expr)
public int getAnalysisBits()
getAnalysisBits
in interface PathComponent
getAnalysisBits
in class LocPathIterator
public boolean isDocOrdered()
isDocOrdered
in interface DTMIterator
isDocOrdered
in class LocPathIterator
public void callPredicateVisitors(XPathVisitor visitor)
callPredicateVisitors
in class PredicatedNodeTest
visitor
- The visitor whose appropriate method will be called.public boolean deepEquals(Expression expr)
Expression
deepEquals
in class PredicatedNodeTest
expr
- Another expression object.
Expression.deepEquals(Expression)
public int getAxis()
getAxis
in interface DTMIterator
getAxis
in class LocPathIterator
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