public abstract class Lookup
extends java.lang.Object
CharSequence
suggestions.Modifier and Type | Class and Description |
---|---|
static class |
Lookup.LookupPriorityQueue
A
PriorityQueue collecting a fixed size of high priority Lookup.LookupResult |
static class |
Lookup.LookupResult
Result of a lookup.
|
Modifier and Type | Field and Description |
---|---|
static java.util.Comparator<java.lang.CharSequence> |
CHARSEQUENCE_COMPARATOR
A simple char-by-char comparator for
CharSequence |
Constructor and Description |
---|
Lookup() |
Modifier and Type | Method and Description |
---|---|
void |
build(Dictionary dict)
Build lookup from a dictionary.
|
abstract void |
build(TermFreqIterator tfit)
Builds up a new internal
Lookup representation based on the given TermFreqIterator . |
abstract boolean |
load(java.io.InputStream input)
Discard current lookup data and load it from a previously saved copy.
|
abstract java.util.List<Lookup.LookupResult> |
lookup(java.lang.CharSequence key,
boolean onlyMorePopular,
int num)
Look up a key and return possible completion for this key.
|
abstract boolean |
store(java.io.OutputStream output)
Persist the constructed lookup data to a directory.
|
public static final java.util.Comparator<java.lang.CharSequence> CHARSEQUENCE_COMPARATOR
CharSequence
public void build(Dictionary dict) throws java.io.IOException
SortedTermFreqIteratorWrapper
or
UnsortedTermFreqIteratorWrapper
in such case.java.io.IOException
public abstract void build(TermFreqIterator tfit) throws java.io.IOException
Lookup
representation based on the given TermFreqIterator
.
The implementation might re-sort the data internally.java.io.IOException
public abstract java.util.List<Lookup.LookupResult> lookup(java.lang.CharSequence key, boolean onlyMorePopular, int num)
key
- lookup key. Depending on the implementation this may be
a prefix, misspelling, or even infix.onlyMorePopular
- return only more popular resultsnum
- maximum number of results to returnpublic abstract boolean store(java.io.OutputStream output) throws java.io.IOException
output
- OutputStream
to write the data to.java.io.IOException
- when fatal IO error occurs.public abstract boolean load(java.io.InputStream input) throws java.io.IOException
input
- the InputStream
to load the lookup data.java.io.IOException
- when fatal IO error occurs.Copyright © 2000-2024 Apache Software Foundation. All Rights Reserved.