public class RandomSortField extends FieldType
This random sorting implementation uses the dynamic field name to set the random 'seed'. To get random sorting order, you need to use a random dynamic field name. For example, you will need to configure schema.xml:
<types> ... <fieldType name="random" class="solr.RandomSortField" /> ... </types> <fields> ... <dynamicField name="random*" type="random" indexed="true" stored="false"/> ... </fields>Examples of queries:
| Modifier and Type | Class and Description |
|---|---|
class |
RandomSortField.RandomValueSource |
FieldType.DefaultAnalyzer, FieldType.MultiValueSelectorANALYZER, args, CHAR_FILTER, CHAR_FILTERS, CLASS_NAME, docValuesFormat, falseProperties, FILTER, FILTERS, INDEX, INDEX_ANALYZER, MULTI_TERM, MULTI_TERM_ANALYZER, POLY_FIELD_SEPARATOR, postingsFormat, properties, QUERY, QUERY_ANALYZER, similarity, SIMILARITY, similarityFactory, TOKENIZER, trueProperties, TYPE, TYPE_NAME, typeNameBINARY, DOC_VALUES, INDEXED, MULTIVALUED, OMIT_NORMS, OMIT_POSITIONS, OMIT_TF_POSITIONS, REQUIRED, SORT_MISSING_FIRST, SORT_MISSING_LAST, STORE_OFFSETS, STORE_TERMOFFSETS, STORE_TERMPAYLOADS, STORE_TERMPOSITIONS, STORE_TERMVECTORS, STORED, TOKENIZED, USE_DOCVALUES_AS_STORED| Constructor and Description |
|---|
RandomSortField() |
| Modifier and Type | Method and Description |
|---|---|
SortField |
getSortField(SchemaField field,
boolean reverse)
Returns the SortField instance that should be used to sort fields
of this type.
|
UninvertingReader.Type |
getUninversionType(SchemaField sf)
DocValues is not enabled for a field, but it's indexed, docvalues can be constructed
on the fly (uninverted, aka fieldcache) on the first request to sort, facet, etc.
|
ValueSource |
getValueSource(SchemaField field,
QParser qparser)
called to get the default value source (normally, from the
Lucene FieldCache.)
|
void |
write(TextResponseWriter writer,
String name,
IndexableField f)
calls back to TextResponseWriter to write the field value
|
checkSchemaField, createField, createField, createFields, getAnalyzerProperties, getClassArg, getDocValuesFormat, getFieldQuery, getIndexAnalyzer, getIndexOptions, getNamedPropertyValues, getNonFieldPropertyArgs, getNumericType, getPostingsFormat, getPrefixQuery, getQueryAnalyzer, getRangeQuery, getRewriteMethod, getSimilarity, getSimilarityFactory, getSingleValueSource, getStringSort, getTypeName, hasProperty, indexedToReadable, indexedToReadable, init, isExplicitAnalyzer, isExplicitQueryAnalyzer, isMultiValued, isPolyField, isTokenized, marshalBase64SortValue, marshalSortValue, marshalStringSortValue, multiValuedFieldCache, readableToIndexed, readableToIndexed, restrictProps, setArgs, setIndexAnalyzer, setIsExplicitAnalyzer, setIsExplicitQueryAnalyzer, setQueryAnalyzer, setSimilarity, storedToIndexed, storedToReadable, supportsAnalyzers, toExternal, toInternal, toNativeType, toObject, toObject, toString, unmarshalBase64SortValue, unmarshalSortValue, unmarshalStringSortValue, useDocValuesAsStoredpublic SortField getSortField(SchemaField field, boolean reverse)
FieldTypegetSortField in class FieldTypeSchemaField.checkSortability()public UninvertingReader.Type getUninversionType(SchemaField sf)
FieldTypegetUninversionType in class FieldTypesf - field instancenull (to disallow uninversion for the field)public ValueSource getValueSource(SchemaField field, QParser qparser)
FieldTypegetValueSource in class FieldTypepublic void write(TextResponseWriter writer, String name, IndexableField f) throws IOException
FieldTypewrite in class FieldTypeIOExceptionCopyright © 2000-2016 Apache Software Foundation. All Rights Reserved.