org.apache.solr.schema
Class RandomSortField
java.lang.Object
org.apache.solr.schema.FieldProperties
org.apache.solr.schema.FieldType
org.apache.solr.schema.RandomSortField
public class RandomSortField
- extends FieldType
Utility Field used for random sorting. It should not be passed a value.
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:
- http://localhost:8983/solr/select/?q=*:*&fl=name&sort=rand_1234%20desc
- http://localhost:8983/solr/select/?q=*:*&fl=name&sort=rand_2345%20desc
- http://localhost:8983/solr/select/?q=*:*&fl=name&sort=rand_ABDC%20desc
- http://localhost:8983/solr/select/?q=*:*&fl=name&sort=rand_21%20desc
Note that multiple calls to the same URL will return the same sorting order.
- Since:
- solr 1.3
Fields inherited from class org.apache.solr.schema.FieldType |
analyzer, ANALYZER, args, CHAR_FILTER, CHAR_FILTERS, CLASS_NAME, docValuesFormat, falseProperties, FILTER, FILTERS, INDEX, INDEX_ANALYZER, log, MULTI_TERM, MULTI_TERM_ANALYZER, POLY_FIELD_SEPARATOR, postingsFormat, properties, QUERY, QUERY_ANALYZER, queryAnalyzer, similarity, SIMILARITY, similarityFactory, TOKENIZER, trueProperties, TYPE, TYPE_NAME, typeName |
Fields inherited from class org.apache.solr.schema.FieldProperties |
BINARY, DOC_VALUES, INDEXED, MULTIVALUED, OMIT_NORMS, OMIT_POSITIONS, OMIT_TF_POSITIONS, REQUIRED, SORT_MISSING_FIRST, SORT_MISSING_LAST, STORE_OFFSETS, STORE_TERMOFFSETS, STORE_TERMPOSITIONS, STORE_TERMVECTORS, STORED, TOKENIZED |
Methods inherited from class org.apache.solr.schema.FieldType |
checkSchemaField, createField, createField, createFields, getAnalyzer, getAnalyzerProperties, getClassArg, getDocValuesFormat, getFieldQuery, getIndexOptions, getNamedPropertyValues, getNonFieldPropertyArgs, getNumericType, getPostingsFormat, getPrefixQuery, getQueryAnalyzer, getRangeQuery, getRewriteMethod, getSimilarity, getSimilarityFactory, getStringSort, getTypeName, hasProperty, indexedToReadable, indexedToReadable, init, isExplicitAnalyzer, isExplicitQueryAnalyzer, isMultiValued, isPolyField, isTokenized, marshalBase64SortValue, marshalSortValue, marshalStringSortValue, multiValuedFieldCache, readableToIndexed, readableToIndexed, restrictProps, setAnalyzer, setArgs, setIsExplicitAnalyzer, setIsExplicitQueryAnalyzer, setQueryAnalyzer, setSimilarity, storedToIndexed, storedToReadable, toExternal, toInternal, toObject, toObject, toString, unmarshalBase64SortValue, unmarshalSortValue, unmarshalStringSortValue |
RandomSortField
public RandomSortField()
getSortField
public SortField getSortField(SchemaField field,
boolean reverse)
- Description copied from class:
FieldType
- Returns the SortField instance that should be used to sort fields
of this type.
- Specified by:
getSortField
in class FieldType
- See Also:
SchemaField.checkSortability()
getValueSource
public ValueSource getValueSource(SchemaField field,
QParser qparser)
- Description copied from class:
FieldType
- called to get the default value source (normally, from the
Lucene FieldCache.)
- Overrides:
getValueSource
in class FieldType
write
public void write(TextResponseWriter writer,
String name,
IndexableField f)
throws IOException
- Description copied from class:
FieldType
- calls back to TextResponseWriter to write the field value
- Specified by:
write
in class FieldType
- Throws:
IOException
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