## Uses of Interface
org.apache.xpath.axes.SubContextList

- Packages that use SubContextList
  Package | Description
  --- | ---
  org.apache.xalan.transformer | In charge of run-time transformations and the production of result trees.
  org.apache.xpath | Implementation of XPath; for the most part, only classes meant for public use are found at this root level of the XPath packages.
  org.apache.xpath.axes | Implementation of XPath LocationPath support -- primary classes are LocPathIterator and UnionPathIterator.
  org.apache.xpath.patterns | Implementation of XPath nodeTest support, and XSLT pattern matching support.

- - ### Uses of SubContextList in org.apache.xalan.transformer

    Classes in org.apache.xalan.transformer that implement SubContextList
    Modifier and Type | Class and Description
    --- | ---
    `class` | `KeyIterator` This class implements an optimized iterator for "key()" patterns, matching each node to the match attribute in one or more xsl:key declarations.
    `class` | `KeyRefIterator` This class filters nodes from a key iterator, according to whether or not the use value matches the ref value.

  - ### Uses of SubContextList in org.apache.xpath

    Methods in org.apache.xpath that return SubContextList
    Modifier and Type | Method and Description
    --- | ---
    `SubContextList` | XPathContext.`getCurrentNodeList()` Get the current node list as defined by the XSLT spec.
    `SubContextList` | XPathContext.`getSubContextList()` Get the current axes iterator, or return null if none.

    Methods in org.apache.xpath with parameters of type SubContextList
    Modifier and Type | Method and Description
    --- | ---
    `void` | XPathContext.`pushSubContextList(SubContextList iter)` Push a TreeWalker on the stack.

  - ### Uses of SubContextList in org.apache.xpath.axes

    Classes in org.apache.xpath.axes that implement SubContextList
    Modifier and Type | Class and Description
    --- | ---
    `class` | `AttributeIterator` This class implements an optimized iterator for attribute axes patterns.
    `class` | `AxesWalker` Serves as common interface for axes Walkers, and stores common state variables.
    `class` | `BasicTestIterator` Base for iterators that handle predicates.
    `class` | `ChildIterator` This class implements an optimized iterator for "node()" patterns, that is, any children of the context node.
    `class` | `ChildTestIterator` This class implements an optimized iterator for children patterns that have a node test, and possibly a predicate.
    `class` | `DescendantIterator` This class implements an optimized iterator for descendant, descendant-or-self, or "//foo" patterns.
    `class` | `FilterExprIterator`
    `class` | `FilterExprIteratorSimple` Class to use for one-step iteration that doesn't have a predicate, and doesn't need to set the context.
    `class` | `FilterExprWalker` Walker for the OP_VARIABLE, or OP_EXTFUNCTION, or OP_FUNCTION, or OP_GROUP, op codes.
    `class` | `LocPathIterator` This class extends NodeSetDTM, which implements NodeIterator, and fetches nodes one at a time in document order based on a XPath | `class` | `MatchPatternIterator` This class treats a LocationPath as a filtered iteration over the tree, evaluating each node in a super axis traversal against the LocationPath interpreted as a match pattern.
    `class` | `OneStepIterator` This class implements a general iterator for those LocationSteps with only one step, and perhaps a predicate.
    `class` | `OneStepIteratorForward` This class implements a general iterator for those LocationSteps with only one step, and perhaps a predicate, that only go forward (i.e. it can not be used with ancestors, preceding, etc.)
    `class` | `PredicatedNodeTest`
    `class` | `ReverseAxesWalker` Walker for a reverse axes.
    `class` | `SelfIteratorNoPredicate` This class implements an optimized iterator for "." patterns, that is, the self axes without any predicates.
    `class` | `UnionChildIterator` This class defines a simplified type of union iterator that only tests along the child axes.
    `class` | `UnionPathIterator` This class extends NodeSetDTM, which implements DTMIterator, and fetches nodes one at a time in document order based on a XPath UnionExpr.
    `class` | `WalkingIterator` Location path iterator that uses Walkers.
    `class` | `WalkingIteratorSorted` This class iterates over set of nodes that needs to be sorted.

  - ### Uses of SubContextList in org.apache.xpath.patterns

    Classes in org.apache.xpath.patterns that implement SubContextList
    Modifier and Type | Class and Description
    --- | ---
    `class` | `ContextMatchStepPattern` Special context node pattern matcher.
    `class` | `FunctionPattern` Match pattern step that contains a function.
    `class` | `StepPattern` This class represents a single pattern match step.

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