Package org.apache.xpath

Interface ExpressionNode

All Superinterfaces:
SourceLocator
All Known Implementing Classes:
And, AttributeIterator, AxesWalker, BasicTestIterator, Bool, ChildIterator, ChildTestIterator, ContextMatchStepPattern, DecimalFormatProperties, DescendantIterator, Div, ElemApplyImport, ElemApplyTemplates, ElemAttribute, ElemAttributeSet, ElemCallTemplate, ElemChoose, ElemComment, ElemCopy, ElemCopyOf, ElemElement, ElemEmpty, ElemExsltFuncResult, ElemExsltFunction, ElemExtensionCall, ElemExtensionDecl, ElemExtensionScript, ElemFallback, ElemForEach, ElemIf, ElemLiteralResult, ElemMessage, ElemNumber, ElemOtherwise, ElemParam, ElemPI, ElemSort, ElemTemplate, ElemTemplateElement, ElemText, ElemTextLiteral, ElemUnknown, ElemUse, ElemValueOf, ElemVariable, ElemVariablePsuedo, ElemWhen, ElemWithParam, Equals, Expression, FilterExprIterator, FilterExprIteratorSimple, FilterExprWalker, FuncBoolean, FuncCeiling, FuncConcat, FuncContains, FuncCount, FuncCurrent, FuncDoclocation, FuncDocument, FuncExtElementAvailable, FuncExtFunction, FuncExtFunctionAvailable, FuncFalse, FuncFloor, FuncFormatNumb, FuncGenerateId, FuncId, FuncKey, FuncLang, FuncLast, FuncLocalPart, FuncNamespace, FuncNormalizeSpace, FuncNot, FuncNumber, FuncPosition, FuncQname, FuncRound, FuncStartsWith, FuncString, FuncStringLength, FuncSubstring, FuncSubstringAfter, FuncSubstringBefore, FuncSum, FuncSystemProperty, Function, Function2Args, Function3Args, FunctionDef1Arg, FunctionMultiArgs, FunctionOneArg, FunctionPattern, FuncTranslate, FuncTrue, FuncUnparsedEntityURI, Gt, Gte, KeyDeclaration, KeyIterator, LocPathIterator, Lt, Lte, MatchPatternIterator, Minus, Mod, Mult, NamespaceAlias, Neg, NodeSequence, NodeTest, NotEquals, Number, OneStepIterator, OneStepIteratorForward, Operation, Or, OutputProperties, Plus, PredicatedNodeTest, ProcessorCharacters, ProcessorExsltFuncResult, ProcessorExsltFunction, ProcessorImport, ProcessorInclude, ProcessorLRE, ProcessorStylesheetDoc, ProcessorStylesheetElement, ProcessorTemplateElem, ProcessorText, ProcessorUnknown, Quo, ReverseAxesWalker, SelfIteratorNoPredicate, StepPattern, String, Stylesheet, StylesheetComposed, StylesheetRoot, UnaryOperation, UnionChildIterator, UnionPathIterator, UnionPattern, Variable, VariableSafeAbsRef, WalkingIterator, WalkingIteratorSorted, WhiteSpaceInfo, WhitespaceInfoPaths, XBoolean, XBooleanStatic, XNodeSet, XNodeSetForDOM, XNull, XNumber, XObject, XRTreeFrag, XRTreeFragSelectWrapper, XSLTElementProcessor, XString, XStringForChars, XStringForFSB, XUnresolvedVariable, XUnresolvedVariableSimple
public interface ExpressionNode
extends SourceLocator
A class that implements this interface can construct expressions, give information about child and parent expressions, and give the originating source information. A class that implements this interface does not lay any claim to being directly executable.

Note: This interface should not be considered stable. Only exprSetParent and exprGetParent can be counted on to work reliably. Work in progress.

  • Method Details

    • exprSetParent

      void exprSetParent​(ExpressionNode n)
      This pair of methods are used to inform the node of its parent.

    • exprGetParent

      ExpressionNode exprGetParent()

    • exprAddChild

      void exprAddChild​(ExpressionNode n, int i)
      This method tells the node to add its argument to the node's list of children.

    • exprGetChild

      ExpressionNode exprGetChild​(int i)
      This method returns a child node. The children are numbered from zero, left to right.

    • exprGetNumChildren

      int exprGetNumChildren()
      Return the number of children the node has.