org.apache.solr.request

Class SimpleFacets

java.lang.Object

org.apache.solr.request.SimpleFacets

public class SimpleFacets
extends Object

A class that generates simple Facet information for a request. More advanced facet implementations may compose or subclass this class to leverage any of it's functionality.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SimpleFacets.CountPair<K extends Comparable<? super K>,V extends Comparable<? super V>> A simple key=>val pair whose natural order is such that higher vals come before lower vals.

Field Summary

Fields

Modifier and Type	Field and Description
protected DocSet	docs The main set of documents all facet counts should be relative to
protected SimpleOrderedMap	facetResponse
protected SolrParams	params Configuration params behavior should be driven by
protected ResponseBuilder	rb
protected SolrQueryRequest	req
protected SolrParams	required
protected SolrIndexSearcher	searcher Searcher to use for all calculations

Constructor Summary

Constructors

Constructor and Description
SimpleFacets(SolrQueryRequest req, DocSet docs, SolrParams params)
SimpleFacets(SolrQueryRequest req, DocSet docs, SolrParams params, ResponseBuilder rb)

Method Summary

Methods

Modifier and Type	Method and Description
NamedList	getFacetCounts() Looks at various Params to determing if any simple Facet Constraint count computations are desired.
NamedList	getFacetDateCounts() Deprecated. Use getFacetRangeCounts which is more generalized
void	getFacetDateCounts(String dateFacet, NamedList resOuter) Deprecated. Use getFacetRangeCounts which is more generalized
NamedList	getFacetFieldCounts() Returns a list of value constraints and the associated facet counts for each facet field specified in the params.
NamedList	getFacetQueryCounts() Returns a list of facet counts for each of the facet queries specified in the params
NamedList	getFacetRangeCounts() Returns a list of value constraints and the associated facet counts for each facet numerical field, range, and interval specified in the SolrParams
NamedList	getFacetTermEnumCounts(SolrIndexSearcher searcher, DocSet docs, String field, int offset, int limit, int mincount, boolean missing, String sort, String prefix) Returns a list of terms in the specified field along with the corresponding count of documents in the set that match that constraint.
static NamedList	getFieldCacheCounts(SolrIndexSearcher searcher, DocSet docs, String fieldName, int offset, int limit, int mincount, boolean missing, String sort, String prefix) Use the Lucene FieldCache to get counts for each unique field value in docs.
static int	getFieldMissingCount(SolrIndexSearcher searcher, DocSet docs, String fieldName) Returns a count of the documents in the set which do not have any terms for for the specified field.
NamedList	getTermCounts(String field)
protected int	rangeCount(SchemaField sf, Date low, Date high, boolean iLow, boolean iHigh) Deprecated. Use rangeCount(SchemaField,String,String,boolean,boolean) which is more generalized
protected int	rangeCount(SchemaField sf, String low, String high, boolean iLow, boolean iHigh) Macro for getting the numDocs of range over docs

Methods inherited from class java.lang.Object

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

Field Detail

docs

protected DocSet docs

The main set of documents all facet counts should be relative to

params

protected SolrParams params

Configuration params behavior should be driven by

required

protected SolrParams required

searcher

protected SolrIndexSearcher searcher

Searcher to use for all calculations

req

protected SolrQueryRequest req

rb

protected ResponseBuilder rb

facetResponse

protected SimpleOrderedMap facetResponse

Constructor Detail

SimpleFacets

public SimpleFacets(SolrQueryRequest req,
            DocSet docs,
            SolrParams params)

SimpleFacets

public SimpleFacets(SolrQueryRequest req,
            DocSet docs,
            SolrParams params,
            ResponseBuilder rb)

Method Detail

getFacetCounts

public NamedList getFacetCounts()

Looks at various Params to determing if any simple Facet Constraint count computations are desired.

Returns:

a NamedList of Facet Count info or null

See Also:

getFacetQueryCounts(), getFacetFieldCounts(), getFacetDateCounts(), getFacetRangeCounts(), FacetParams.FACET

getFacetQueryCounts

public NamedList getFacetQueryCounts()
                              throws IOException,
                                     ParseException

Returns a list of facet counts for each of the facet queries specified in the params

Throws:

IOException

ParseException

See Also:

FacetParams.FACET_QUERY

getTermCounts

public NamedList getTermCounts(String field)
                        throws IOException

Throws:

IOException

getFacetFieldCounts

public NamedList getFacetFieldCounts()
                              throws IOException,
                                     ParseException

Returns a list of value constraints and the associated facet counts for each facet field specified in the params.

Throws:

IOException

ParseException

See Also:

FacetParams.FACET_FIELD, getFieldMissingCount(org.apache.solr.search.SolrIndexSearcher, org.apache.solr.search.DocSet, java.lang.String), getFacetTermEnumCounts(org.apache.solr.search.SolrIndexSearcher, org.apache.solr.search.DocSet, java.lang.String, int, int, int, boolean, java.lang.String, java.lang.String)

getFieldMissingCount

public static int getFieldMissingCount(SolrIndexSearcher searcher,
                       DocSet docs,
                       String fieldName)
                                throws IOException

Returns a count of the documents in the set which do not have any terms for for the specified field.

Throws:

IOException

See Also:

FacetParams.FACET_MISSING

getFieldCacheCounts

public static NamedList getFieldCacheCounts(SolrIndexSearcher searcher,
                            DocSet docs,
                            String fieldName,
                            int offset,
                            int limit,
                            int mincount,
                            boolean missing,
                            String sort,
                            String prefix)
                                     throws IOException

Use the Lucene FieldCache to get counts for each unique field value in docs. The field must have at most one indexed token per document.

Throws:

IOException

getFacetTermEnumCounts

public NamedList getFacetTermEnumCounts(SolrIndexSearcher searcher,
                               DocSet docs,
                               String field,
                               int offset,
                               int limit,
                               int mincount,
                               boolean missing,
                               String sort,
                               String prefix)
                                 throws IOException

Returns a list of terms in the specified field along with the corresponding count of documents in the set that match that constraint. This method uses the FilterCache to get the intersection count between docs and the DocSet for each term in the filter.

Throws:

IOException

See Also:

FacetParams.FACET_LIMIT, FacetParams.FACET_ZEROS, FacetParams.FACET_MISSING

getFacetDateCounts

@Deprecated
public NamedList getFacetDateCounts()
                             throws IOException,
                                    ParseException

Deprecated. Use getFacetRangeCounts which is more generalized

Returns a list of value constraints and the associated facet counts for each facet date field, range, and interval specified in the SolrParams

Throws:

IOException

ParseException

See Also:

FacetParams.FACET_DATE

getFacetDateCounts

@Deprecated
public void getFacetDateCounts(String dateFacet,
                                 NamedList resOuter)
                        throws IOException,
                               ParseException

Deprecated. Use getFacetRangeCounts which is more generalized

Throws:

IOException

ParseException

getFacetRangeCounts

public NamedList getFacetRangeCounts()
                              throws IOException,
                                     ParseException

Returns a list of value constraints and the associated facet counts for each facet numerical field, range, and interval specified in the SolrParams

Throws:

IOException

ParseException

See Also:

FacetParams.FACET_RANGE

rangeCount

protected int rangeCount(SchemaField sf,
             String low,
             String high,
             boolean iLow,
             boolean iHigh)
                  throws IOException

Macro for getting the numDocs of range over docs

Throws:

IOException

See Also:

SolrIndexSearcher.numDocs(org.apache.lucene.search.Query, org.apache.solr.search.DocSet), TermRangeQuery

rangeCount

@Deprecated
protected int rangeCount(SchemaField sf,
                        Date low,
                        Date high,
                        boolean iLow,
                        boolean iHigh)
                  throws IOException

Deprecated. Use rangeCount(SchemaField,String,String,boolean,boolean) which is more generalized

Throws:

IOException