java.lang.Object
- org.apache.lucene.search.suggest.Lookup
- - org.apache.lucene.search.suggest.tst.TSTLookup

```
public class TSTLookup
extends Lookup
```

Nested Class Summary
- Nested classes/interfaces inherited from class org.apache.lucene.search.suggest.Lookup
  Lookup.LookupPriorityQueue, Lookup.LookupResult

Field Summary
- Fields inherited from class org.apache.lucene.search.suggest.Lookup
  CHARSEQUENCE_COMPARATOR

Constructor Summary

Constructors
Constructor Description

TSTLookup()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`add(CharSequence key, Object value)`
`void`	`build(TermFreqIterator tfit)`	Builds up a new internal `Lookup` representation based on the given `TermFreqIterator`.
`Object`	`get(CharSequence key)`
`boolean`	`load(InputStream input)`	Discard current lookup data and load it from a previously saved copy.
`List<Lookup.LookupResult>`	`lookup(CharSequence key, boolean onlyMorePopular, int num)`	Look up a key and return possible completion for this key.
`boolean`	`store(OutputStream output)`	Persist the constructed lookup data to a directory.

Methods inherited from class org.apache.lucene.search.suggest.Lookup
build

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - TSTLookup
```
public TSTLookup()
```
- Method Detail
  - build
```
public void build(TermFreqIterator tfit)
           throws IOException
```
    Description copied from class: Lookup
    
    Builds up a new internal Lookup representation based on the given TermFreqIterator. The implementation might re-sort the data internally.
    
    Specified by:
    
    build in class Lookup
    
    Throws:
    
    IOException
  - add
```
public boolean add(CharSequence key,
                   Object value)
```
  - get
```
public Object get(CharSequence key)
```
  - lookup
```
public List<Lookup.LookupResult> lookup(CharSequence key,
                                        boolean onlyMorePopular,
                                        int num)
```
    Description copied from class: Lookup
    
    Look up a key and return possible completion for this key.
    
    Specified by:
    
    lookup in class Lookup
    
    Parameters:
    
    key - lookup key. Depending on the implementation this may be a prefix, misspelling, or even infix.
    
    onlyMorePopular - return only more popular results
    
    num - maximum number of results to return
    
    Returns:
    
    a list of possible completions, with their relative weight (e.g. popularity)
  - store
```
public boolean store(OutputStream output)
              throws IOException
```
    Description copied from class: Lookup
    
    Persist the constructed lookup data to a directory. Optional operation.
    
    Specified by:
    
    store in class Lookup
    
    Parameters:
    
    output - OutputStream to write the data to.
    
    Returns:
    
    true if successful, false if unsuccessful or not supported.
    
    Throws:
    
    IOException - when fatal IO error occurs.
  - load
```
public boolean load(InputStream input)
             throws IOException
```
    Description copied from class: Lookup
    
    Discard current lookup data and load it from a previously saved copy. Optional operation.
    
    Specified by:
    
    load in class Lookup
    
    Parameters:
    
    input - the InputStream to load the lookup data.
    
    Returns:
    
    true if completed successfully, false if unsuccessful or not supported.
    
    Throws:
    
    IOException - when fatal IO error occurs.

Class TSTLookup

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.search.suggest.Lookup

Field Summary

Fields inherited from class org.apache.lucene.search.suggest.Lookup

Constructor Summary

Method Summary

Methods inherited from class org.apache.lucene.search.suggest.Lookup

Methods inherited from class java.lang.Object

Constructor Detail

TSTLookup

Method Detail

build

add

get

lookup

store

load