org.apache.solr.schema

Class SortableTextField

java.lang.Object

org.apache.solr.schema.FieldProperties

org.apache.solr.schema.FieldType

org.apache.solr.schema.TextField

org.apache.solr.schema.SortableTextField

Direct Known Subclasses:

NestPathField

public class SortableTextField
extends TextField

SortableTextField is a specialized form of TextField that supports Sorting and ValueSource functions, using docValues built from the first maxCharsForDocValues characters of the original (pre-analyzed) String values of this field.

The implicit default value for maxCharsForDocValues is 1024. If a field type instance is configured with maxCharsForDocValues <= 0 this overrides the default with an effective value of "no limit" (Integer.MAX_VALUE).

Instances of this FieldType implicitly default to docValues="true" unless explicitly configured with docValues="false".

Just like StrField, instances of this field that are multiValued="true" support the field(name,min|max) function, and implicitly sort on min|max depending on the asc|desc direction selector.

NOTE: Unlike most other FieldTypes, this class defaults to useDocValuesAsStored="false". If an instance of this type (or a field that uses this type) overrides this behavior to set useDocValuesAsStored="true" then instead of truncating the original string value based on the effective value of maxCharsForDocValues, this class will reject any documents w/a field value longer then that limit -- causing the document update to fail. This behavior exists to prevent situations that could result in a search client reieving only a truncated version of the original field value in place of a stored value.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.solr.schema.FieldType

FieldType.DefaultAnalyzer, FieldType.MultiValueSelector

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_MAX_CHARS_FOR_DOC_VALUES

Fields inherited from class org.apache.solr.schema.TextField

autoGeneratePhraseQueries, enableGraphQueries, multiTermAnalyzer, synonymQueryStyle

Fields inherited from class org.apache.solr.schema.FieldType

ANALYZER, args, AUTO_GENERATE_PHRASE_QUERIES, CHAR_FILTER, CHAR_FILTERS, CLASS_NAME, docValuesFormat, ENABLE_GRAPH_QUERIES, falseProperties, FILTER, FILTERS, INDEX, INDEX_ANALYZER, MULTI_TERM, MULTI_TERM_ANALYZER, POLY_FIELD_SEPARATOR, postingsFormat, properties, QUERY, QUERY_ANALYZER, similarity, SIMILARITY, similarityFactory, SYNONYM_QUERY_STYLE, TOKENIZER, trueProperties, TYPE, TYPE_NAME, typeName

Fields inherited from class org.apache.solr.schema.FieldProperties

BINARY, DOC_VALUES, INDEXED, LARGE_FIELD, 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, UNINVERTIBLE, USE_DOCVALUES_AS_STORED

Constructor Summary

Constructors

Constructor and Description
SortableTextField()

Method Summary

Modifier and Type	Method and Description
protected void	checkSupportsDocValues() Called by FieldType.checkSchemaField(SchemaField) if the field has docValues.
List<IndexableField>	createFields(SchemaField field, Object value) Given a SchemaField, create one or more IndexableField instances
FieldType.MultiValueSelector	getDefaultMultiValueSelectorForSort(SchemaField field, boolean reverse) Method for indicating which FieldType.MultiValueSelector (if any) should be used when sorting on a multivalued field of this type for the specified direction (asc/desc).
ValueSource	getSingleValueSource(FieldType.MultiValueSelector choice, SchemaField field, QParser parser) Method for dynamically building a ValueSource based on a single value of a multivalued field.
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) If 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 parser) called to get the default value source (normally, from the Lucene FieldCache.)
protected void	init(IndexSchema schema, Map<String,String> args) subclasses should initialize themselves with the args provided and remove valid arguments.
boolean	multiValuedFieldCache() Returns true if a single field value of this type has multiple logical values for the purposes of faceting, sorting, etc.

Methods inherited from class org.apache.solr.schema.TextField

analyzeMultiTerm, getAutoGeneratePhraseQueries, getEnableGraphQueries, getFieldQuery, getMultiTermAnalyzer, getRangeQuery, getSynonymQueryStyle, isExplicitMultiTermAnalyzer, isUtf8Field, marshalSortValue, setIsExplicitMultiTermAnalyzer, setMultiTermAnalyzer, supportsAnalyzers, toObject, unmarshalSortValue, write

Methods inherited from class org.apache.solr.schema.FieldType

checkSchemaField, createField, createField, getAnalyzerProperties, getClassArg, getDocValuesFormat, getIndexAnalyzer, getNamedPropertyValues, getNonFieldPropertyArgs, getNumberType, getNumericSort, getPostingsFormat, getPrefixQuery, getQueryAnalyzer, getRewriteMethod, getSetQuery, getSimilarity, getSimilarityFactory, getSortedNumericSortField, getSortedSetSortField, getSortField, getStringSort, getTypeName, hasProperty, indexedToReadable, indexedToReadable, isExplicitAnalyzer, isExplicitQueryAnalyzer, isMultiValued, isPointField, isPolyField, isTokenized, marshalBase64SortValue, marshalStringSortValue, readableToIndexed, readableToIndexed, restrictProps, setArgs, setIndexAnalyzer, setIsExplicitAnalyzer, setIsExplicitQueryAnalyzer, setQueryAnalyzer, setSimilarity, storedToIndexed, storedToReadable, toExternal, toInternal, toNativeType, toObject, toString, unmarshalBase64SortValue, unmarshalStringSortValue, useDocValuesAsStored, write

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_MAX_CHARS_FOR_DOC_VALUES

public static final int DEFAULT_MAX_CHARS_FOR_DOC_VALUES

See Also:

Constant Field Values

Constructor Detail

SortableTextField

public SortableTextField()

Method Detail

init

protected void init(IndexSchema schema,
                    Map<String,String> args)

Description copied from class: FieldType

subclasses should initialize themselves with the args provided and remove valid arguments. leftover arguments will cause an exception. Common boolean properties have already been handled.

Overrides:

init in class TextField

createFields

public List<IndexableField> createFields(SchemaField field,
                                         Object value)

Description copied from class: FieldType

Given a SchemaField, create one or more IndexableField instances

Overrides:

createFields in class FieldType

Parameters:

field - the SchemaField

value - The value to add to the field

Returns:

An array of IndexableField

See Also:

FieldType.createField(SchemaField, Object), FieldType.isPolyField()

checkSupportsDocValues

protected void checkSupportsDocValues()

Called by FieldType.checkSchemaField(SchemaField) if the field has docValues. By default none do. this field type supports DocValues, this method is always a No-Op

Overrides:

checkSupportsDocValues in class FieldType

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.

Overrides:

getSortField in class TextField

See Also:

SchemaField.checkSortability(), FieldType.getStringSort(org.apache.solr.schema.SchemaField, boolean), FieldType.getNumericSort(org.apache.solr.schema.SchemaField, org.apache.solr.schema.NumberType, boolean)

getValueSource

public ValueSource getValueSource(SchemaField field,
                                  QParser parser)

Description copied from class: FieldType

called to get the default value source (normally, from the Lucene FieldCache.)

Overrides:

getValueSource in class TextField

getDefaultMultiValueSelectorForSort

public FieldType.MultiValueSelector getDefaultMultiValueSelectorForSort(SchemaField field,
                                                                        boolean reverse)

Description copied from class: FieldType

Method for indicating which FieldType.MultiValueSelector (if any) should be used when sorting on a multivalued field of this type for the specified direction (asc/desc). The default implementation returns null (for all inputs).

Overrides:

getDefaultMultiValueSelectorForSort in class FieldType

Parameters:

field - The SchemaField (of this type) in question

reverse - false if this is an ascending sort, true if this is a descending sort.

Returns:

the implicit selector to use for this direction, or null if implicit sorting on the specified direction is not supported and should return an error.

See Also:

FieldType.MultiValueSelector

getSingleValueSource

public ValueSource getSingleValueSource(FieldType.MultiValueSelector choice,
                                        SchemaField field,
                                        QParser parser)

Description copied from class: FieldType

Method for dynamically building a ValueSource based on a single value of a multivalued field. The default implementation throws an error except in the trivial case where this method is used on a SchemaField that is in fact not-multivalued, in which case it delegates to FieldType.getValueSource(org.apache.solr.schema.SchemaField, org.apache.solr.search.QParser)

Overrides:

getSingleValueSource in class FieldType

See Also:

FieldType.MultiValueSelector

getUninversionType

public UninvertingReader.Type getUninversionType(SchemaField sf)

If 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. This specifies the structure to use.

This method will not be used if the field is (effectively) uninvertible="false"

this field type is not uninvertable, this method always returns null

Overrides:

getUninversionType in class TextField

Parameters:

sf - field instance

Returns:

type to uninvert, or null (to disallow uninversion for the field)

See Also:

SchemaField.isUninvertible()

multiValuedFieldCache

public boolean multiValuedFieldCache()

Returns true if a single field value of this type has multiple logical values for the purposes of faceting, sorting, etc. Text fields normally return true since each token/word is a logical value. This implementation always returns false.

Overrides:

multiValuedFieldCache in class FieldType