org.apache.solr.handler.component

Class PivotFacetField

java.lang.Object

org.apache.solr.handler.component.PivotFacetField

public class PivotFacetField
extends Object

Models a single field somewhere in a hierarchy of fields as part of a pivot facet. This pivot field contains PivotFacetValues which may each contain a nested PivotFacetField child. This PivotFacetField may itself be a child of a PivotFacetValue parent.

See Also:

PivotFacetValue, PivotFacetFieldValueCollection

Field Summary

Fields

Modifier and Type	Field and Description
String	field
PivotFacetValue	parentValue
PivotFacetFieldValueCollection	valueCollection

Method Summary

Methods

Modifier and Type	Method and Description
void	contributeFromShard(int shardNumber, ResponseBuilder rb, List<NamedList<Object>> response) Recursively merges the contributions from the specified shard for each PivotFacetValue represended in the response.
List<NamedList<Object>>	convertToListOfNamedLists() A recursive method for generating NamedLists from this field suitable for including in a pivot facet response to the original distributed request.
static PivotFacetField	createFromListOfNamedLists(int shardNumber, ResponseBuilder rb, PivotFacetValue owner, List<NamedList<Object>> pivotValues) A recursive method to construct a new PivotFacetField object from the contents of the NamedLists provided by the specified shard, relative to a parent value (if this is not the top field in the pivot hierarchy) The associated child PivotFacetValues will be recursively built as well.
List<String>	getValuePath() A recursive method that walks up the tree of pivot fields/values to build a list of String representations of the values that lead down to this PivotFacetField.
void	queuePivotRefinementRequests(PivotFacet pf) A recursive method for determining which PivotFacetValues need to be refined for this pivot.
void	sort() Recursively sorts the collection of values associated with this field, and any sub-pivots those values have.
String	toString()
void	trim() Destructive method that recursively prunes values from the data structure based on the counts for those values and the effective sort, mincount, limit, and offset being used for each field.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

field

public final String field

parentValue

public final PivotFacetValue parentValue

valueCollection

public final PivotFacetFieldValueCollection valueCollection

Method Detail

getValuePath

public List<String> getValuePath()

A recursive method that walks up the tree of pivot fields/values to build a list of String representations of the values that lead down to this PivotFacetField.

Returns:

A mutable List of the pivot values leading down to this pivot field, will never be null but may contain nulls and may be empty if this is a top level pivot field

See Also:

PivotFacetValue.getValuePath()

createFromListOfNamedLists

public static PivotFacetField createFromListOfNamedLists(int shardNumber,
                                         ResponseBuilder rb,
                                         PivotFacetValue owner,
                                         List<NamedList<Object>> pivotValues)

A recursive method to construct a new PivotFacetField object from the contents of the NamedLists provided by the specified shard, relative to a parent value (if this is not the top field in the pivot hierarchy) The associated child PivotFacetValues will be recursively built as well.

Parameters:

shardNumber - the id of the shard that provided this data

rb - The response builder of the current request

owner - the parent value in the current pivot (may be null)

pivotValues - the data from the specified shard for this pivot field, may be null or empty

Returns:

the new PivotFacetField, null if pivotValues is null or empty.

See Also:

PivotFacetValue.createFromNamedList(int, org.apache.solr.handler.component.ResponseBuilder, org.apache.solr.handler.component.PivotFacetField, org.apache.solr.common.util.NamedList<java.lang.Object>)

trim

public void trim()

Destructive method that recursively prunes values from the data structure based on the counts for those values and the effective sort, mincount, limit, and offset being used for each field.

This method should only be called after all refinement is completed just prior calling convertToListOfNamedLists()

See Also:

PivotFacet.getTrimmedPivotsAsListOfNamedLists(org.apache.solr.handler.component.ResponseBuilder), PivotFacetFieldValueCollection.trim()

sort

public void sort()

Recursively sorts the collection of values associated with this field, and any sub-pivots those values have.

See Also:

FacetParams.FACET_SORT, PivotFacetFieldValueCollection.sort()

convertToListOfNamedLists

public List<NamedList<Object>> convertToListOfNamedLists()

A recursive method for generating NamedLists from this field suitable for including in a pivot facet response to the original distributed request.

queuePivotRefinementRequests

public void queuePivotRefinementRequests(PivotFacet pf)

A recursive method for determining which PivotFacetValues need to be refined for this pivot.

See Also:

PivotFacet.queuePivotRefinementRequests()

contributeFromShard

public void contributeFromShard(int shardNumber,
                       ResponseBuilder rb,
                       List<NamedList<Object>> response)

Recursively merges the contributions from the specified shard for each PivotFacetValue represended in the response.

Parameters:

shardNumber - the id of the shard that provided this data

rb - The response builder of the current request

response - the data from the specified shard for this pivot field, may be null

See Also:

PivotFacetValue.mergeContributionFromShard(int, org.apache.solr.handler.component.ResponseBuilder, org.apache.solr.common.util.NamedList<java.lang.Object>)

toString

public String toString()

Overrides:

toString in class Object