org.apache.solr.schema

Class DoubleField

java.lang.Object

org.apache.solr.schema.FieldProperties

org.apache.solr.schema.FieldType

org.apache.solr.schema.PrimitiveFieldType

org.apache.solr.schema.DoubleField

All Implemented Interfaces:

DoubleValueFieldType, NumericValueFieldType

public class DoubleField
extends PrimitiveFieldType
implements DoubleValueFieldType

A legacy numeric field type that encodes "Double" values as simple Strings. This class should not be used except by people with existing indexes that contain numeric values indexed as Strings. New schemas should use TrieDoubleField.

Field values will sort numerically, but Range Queries (and other features that rely on numeric ranges) will not work as expected: values will be evaluated in unicode String order, not numeric order.

See Also:

TrieDoubleField

Nested Class Summary

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

FieldType.DefaultAnalyzer

Field Summary

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

Constructor Summary

Constructors

Constructor and Description
DoubleField()

Method Summary

Methods

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 qparser) 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.
Double	toObject(IndexableField f) Convert the stored-field format to an external object.
void	write(TextResponseWriter writer, String name, IndexableField f) calls back to TextResponseWriter to write the field value

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

checkSchemaField, createField, createField, createFields, getAnalyzer, getAnalyzerProperties, getClassArg, getDocValuesFormat, getFieldQuery, getIndexOptions, getNamedPropertyValues, getNonFieldPropertyArgs, getNumericType, getPostingsFormat, getQueryAnalyzer, getRangeQuery, getRewriteMethod, getSimilarity, getSimilarityFactory, getStringSort, getTypeName, hasProperty, indexedToReadable, indexedToReadable, isExplicitAnalyzer, isExplicitQueryAnalyzer, isMultiValued, isPolyField, isTokenized, multiValuedFieldCache, readableToIndexed, readableToIndexed, restrictProps, setAnalyzer, setArgs, setIsExplicitAnalyzer, setIsExplicitQueryAnalyzer, setQueryAnalyzer, setSimilarity, storedToIndexed, storedToReadable, toExternal, toInternal, toObject, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

DoubleField

public DoubleField()

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 PrimitiveFieldType

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

toObject

public Double toObject(IndexableField f)

Description copied from class: FieldType

Convert the stored-field format to an external object.

Overrides:

toObject in class FieldType

See Also:

FieldType.toInternal(java.lang.String)