org.apache.lucene.spatial.prefix

## Class AbstractVisitingPrefixTreeQuery

- java.lang.Object
- - org.apache.lucene.search.Query
  - - org.apache.lucene.spatial.prefix.AbstractPrefixTreeQuery
    - - org.apache.lucene.spatial.prefix.AbstractVisitingPrefixTreeQuery

- Direct Known Subclasses:
    IntersectsPrefixTreeQuery, WithinPrefixTreeQuery

      public abstract class AbstractVisitingPrefixTreeQuery
      extends AbstractPrefixTreeQuery

  Traverses a `SpatialPrefixTree` indexed field, using the template and visitor design patterns for subclasses to guide the traversal and collect matching documents.

  Subclasses implement `AbstractPrefixTreeQuery.getDocIdSet(org.apache.lucene.index.LeafReaderContext)` by instantiating a custom `AbstractVisitingPrefixTreeQuery.VisitorTemplate` subclass (i.e. an anonymous inner class) and implement the required methods.

  NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class and Description
    --- | ---
    `class` | `AbstractVisitingPrefixTreeQuery.VisitorTemplate` An abstract class designed to make it easy to implement predicates or other operations on a `SpatialPrefixTree` indexed field.
    `protected static class` | `AbstractVisitingPrefixTreeQuery.VNode` A visitor node/cell found via the query shape for `AbstractVisitingPrefixTreeQuery.VisitorTemplate`.

    - ### Nested classes/interfaces inherited from class org.apache.lucene.spatial.prefix.AbstractPrefixTreeQuery

      `AbstractPrefixTreeQuery.BaseTermsEnumTraverser`

  - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected int` | `prefixGridScanLevel`

    - ### Fields inherited from class org.apache.lucene.spatial.prefix.AbstractPrefixTreeQuery

      `detailLevel, fieldName, grid, queryShape`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `AbstractVisitingPrefixTreeQuery(org.locationtech.spatial4j.shape.Shape queryShape, String fieldName, SpatialPrefixTree grid, int detailLevel, int prefixGridScanLevel)`

  - ### Method Summary

    - ### Methods inherited from class org.apache.lucene.spatial.prefix.AbstractPrefixTreeQuery

      `createWeight, equals, getDocIdSet, hashCode, visit`

    - ### Methods inherited from class org.apache.lucene.search.Query

      `classHash, rewrite, sameClassAs, toString, toString`

    - ### Methods inherited from class java.lang.Object

      `clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

- - ### Field Detail

    - #### prefixGridScanLevel

          protected final int prefixGridScanLevel

  - ### Constructor Detail

    - #### AbstractVisitingPrefixTreeQuery

          public AbstractVisitingPrefixTreeQuery(org.locationtech.spatial4j.shape.Shape queryShape,
                                                 String fieldName,
                                                 SpatialPrefixTree grid,
                                                 int detailLevel,
                                                 int prefixGridScanLevel)

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