PredicateIndex (predicate-search 7.531.17 API)

java.lang.Object
- com.yahoo.search.predicate.PredicateIndex

```
public class PredicateIndex
extends Object
```
An index of Predicate objects.
Use a PredicateQuery to find the ids of documents that have matching Predicates. Create an instance of PredicateIndex using the PredicateIndexBuilder.
To build a PredicateQuery you add features and rangeFeatures with a 64-bit bitmap specifying which subqueries they appear in.
To perform a search, create a PredicateIndex.Searcher and call its PredicateIndex.Searcher.search(PredicateQuery) method, which returns a stream of Hit objects, each of which contains a document id and a 64-bit bitmap specifying which subqueries the hit is for.
Note that the PredicateIndex is thread-safe, but a PredicateIndex.Searcher is not. Each thread must use its own searcher.

Author:

Magnar Nedland, bjorncs

Nested Class Summary

Nested Classes
Modifier and Type Class Description

class PredicateIndex.Searcher

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static PredicateIndex`	`fromInputStream(DataInputStream in)`
`void`	`rebuildPostingListCache()`
`PredicateIndex.Searcher`	`searcher()`	Create a new searcher.
`void`	`writeToOutputStream(DataOutputStream out)`

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

Method Detail

rebuildPostingListCache
```
public void rebuildPostingListCache()
```

searcher

public PredicateIndex.Searcher searcher()

Create a new searcher.

writeToOutputStream

public void writeToOutputStream(DataOutputStream out)
                         throws IOException

Throws:: IOException

fromInputStream

public static PredicateIndex fromInputStream(DataInputStream in)
                                      throws IOException

Throws:: IOException