public class SharedFieldCache extends Object
org.apache.lucene.search.FieldCacheImpl
.
The lucene FieldCache class has some sort of support for custom comparators
but it only works on the basis of a field name. There is no further control
over the terms to iterate, that's why we use our own implementation.Modifier and Type | Class and Description |
---|---|
static class |
SharedFieldCache.ValueIndex
Expert: Stores term text values and document ordering data.
|
Modifier and Type | Field and Description |
---|---|
static SharedFieldCache |
INSTANCE
Reference to the single instance of
SharedFieldCache . |
Modifier and Type | Method and Description |
---|---|
SharedFieldCache.ValueIndex |
getValueIndex(org.apache.lucene.index.IndexReader reader,
String field,
String prefix)
Creates a
ValueIndex for a field and a term
prefix . |
public static final SharedFieldCache INSTANCE
SharedFieldCache
.public SharedFieldCache.ValueIndex getValueIndex(org.apache.lucene.index.IndexReader reader, String field, String prefix) throws IOException
ValueIndex
for a field
and a term
prefix
. The term prefix acts as the property name for the
shared field
.
This method is an adapted version of: FieldCacheImpl.getStringIndex()
reader
- the IndexReader
.field
- name of the shared field.prefix
- the property name, will be used as term prefix.IOException
- if an error occurs while reading from the index.Copyright © 2004–2022 The Apache Software Foundation. All rights reserved.