Package org.egothor.stemmer

Class FrequencyTrieBuilders

java.lang.Object

org.egothor.stemmer.FrequencyTrieBuilders

public final class FrequencyTrieBuilders
extends Object

Factory utilities related to FrequencyTrie.Builder.

This helper reconstructs writable builders from compiled read-only tries. The reconstruction preserves the semantics and local counts of the compiled trie as currently stored, which makes it suitable for subsequent modifications followed by recompilation.

Reconstruction operates on the compiled form. Therefore, if the compiled trie was produced using a reduction mode that merged semantically equivalent subtrees, the recreated builder reflects that reduced compiled state rather than the exact original unreduced insertion history.

Method Summary

Modifier and Type	Method	Description
static <V> FrequencyTrie.Builder<V>	copyOf(FrequencyTrie<V> source, IntFunction<V[]> arrayFactory, ReductionMode reductionMode)	Reconstructs a new writable builder from a compiled read-only trie using default settings for the supplied reduction mode.
static <V> FrequencyTrie.Builder<V>	copyOf(FrequencyTrie<V> source, IntFunction<V[]> arrayFactory, ReductionSettings reductionSettings)	Reconstructs a new writable builder from a compiled read-only trie.

Methods inherited from class java.lang.Object

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

Method Details

copyOf

public static <V> FrequencyTrie.Builder<V> copyOf(FrequencyTrie<V> source,
 IntFunction<V[]> arrayFactory,
 ReductionSettings reductionSettings)

Reconstructs a new writable builder from a compiled read-only trie.

The returned builder contains the same key-local value counts as the supplied compiled trie. Callers may continue modifying the returned builder and then compile a new FrequencyTrie instance.

Type Parameters:

V - value type

Parameters:

source - source compiled trie

arrayFactory - array factory for the reconstructed builder

reductionSettings - reduction settings to associate with the new builder

Returns:

reconstructed writable builder

Throws:

NullPointerException - if any argument is null

copyOf

public static <V> FrequencyTrie.Builder<V> copyOf(FrequencyTrie<V> source,
 IntFunction<V[]> arrayFactory,
 ReductionMode reductionMode)

Reconstructs a new writable builder from a compiled read-only trie using default settings for the supplied reduction mode.

Type Parameters:

V - value type

Parameters:

source - source compiled trie

arrayFactory - array factory for the reconstructed builder

reductionMode - reduction mode to associate with the new builder

Returns:

reconstructed writable builder

Throws:

NullPointerException - if any argument is null