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
analyzer, args, falseProperties, log, POLY_FIELD_SEPARATOR, queryAnalyzer, trueProperties, typeName
BINARY, INDEXED, MULTIVALUED, OMIT_NORMS, OMIT_POSITIONS, OMIT_TF_POSITIONS, REQUIRED, SORT_MISSING_FIRST, SORT_MISSING_LAST, STORE_TERMOFFSETS, STORE_TERMPOSITIONS, STORE_TERMVECTORS, STORED, TOKENIZED
Constructor and Description |
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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.
|
ValueSource |
getValueSource(SchemaField field,
QParser parser)
called to get the default value source (normally, from the
Lucene FieldCache.)
|
void |
write(TextResponseWriter writer,
String name,
Fieldable f)
calls back to TextResponseWriter to write the field value
|
void |
write(XMLWriter xmlWriter,
String name,
Fieldable f)
Renders the specified field as XML
|
createField, createField, createFields, getAnalyzer, getArg, getFieldIndex, getFieldQuery, getFieldStore, getFieldTermVec, getIndexOptions, getQueryAnalyzer, getRangeQuery, getStringSort, getTypeName, getValueSource, hasProperty, indexedToReadable, init, isMultiValued, isPolyField, isTokenized, multiValuedFieldCache, readableToIndexed, restrictProps, setAnalyzer, setQueryAnalyzer, storedToIndexed, storedToReadable, toExternal, toInternal, toObject, toString
public SortField getSortField(SchemaField field, boolean reverse)
FieldType
getSortField
in class FieldType
SchemaField.checkSortability()
public ValueSource getValueSource(SchemaField field, QParser parser)
FieldType
getValueSource
in class FieldType
public void write(XMLWriter xmlWriter, String name, Fieldable f) throws IOException
FieldType
write
in class FieldType
IOException
public void write(TextResponseWriter writer, String name, Fieldable f) throws IOException
FieldType
write
in class FieldType
IOException