de.julielab.neo4j.plugins.ahocorasick

Class ACFactoryBatch

java.lang.Object

de.julielab.neo4j.plugins.ahocorasick.ACFactoryBatch

public class ACFactoryBatch
extends Object

Constructor Summary

Constructors

Constructor and Description
ACFactoryBatch()

Method Summary

Modifier and Type	Method and Description
static boolean	addListToDictTree(ACDataBase dataBase, ACDictionary dict, List<ACEntry> listEntries) Adds a list of entries to a DictTree, which is not prepared for searching
static boolean	createDictTree(org.neo4j.unsafe.batchinsert.BatchInserter batchInserter, ACDictionary dict) Creates a new root of a DictTree, where entries could be add.
static boolean	prepareDictTreeForSearch(ACDataBase dataBase, ACDictionary dict) Prepares the DictTree for searching.

Methods inherited from class java.lang.Object

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

Constructor Detail

ACFactoryBatch

public ACFactoryBatch()

Method Detail

createDictTree

public static boolean createDictTree(org.neo4j.unsafe.batchinsert.BatchInserter batchInserter,
                                     ACDictionary dict)

Creates a new root of a DictTree, where entries could be add.

Parameters:

batchInserter - - BatchInserter of the Database

name - - Name of the Dictionary

tokenizer - - Is the DictTree a version with tokens instead of letters

Returns:

true if a new root was created, false if a root already exist

addListToDictTree

public static boolean addListToDictTree(ACDataBase dataBase,
                                        ACDictionary dict,
                                        List<ACEntry> listEntries)
                                 throws org.neo4j.shell.util.json.JSONException,
                                        IOException

Adds a list of entries to a DictTree, which is not prepared for searching

Parameters:

batchInserter - - BatchInserter

name - - name of the DictTree

dictEntries - - The dictionary entries as a JSON map of the form [{'entry':'entry1','attributes':{'attribute1':'attValue1','attribute2':'attValue2'}}] The Entry is mapped with the constant ENTRY and the Attributes is a Map, which has the key ATRRIBUTES

Returns:

true if all entries could be added, false if the tree is already prepared for searching

Throws:

org.neo4j.shell.util.json.JSONException

IOException

prepareDictTreeForSearch

public static boolean prepareDictTreeForSearch(ACDataBase dataBase,
                                               ACDictionary dict)
                                        throws IOException,
                                               org.neo4j.shell.util.json.JSONException

Prepares the DictTree for searching. It sets all fail relations like in the algorithm 3 of the paper from 1975. See article

Parameters:

batchInserter - - BatchInserter

name - - Name of the dictionary

Returns:

true if the tree is prepared, false if tree does not exist

Throws:

IOException

org.neo4j.shell.util.json.JSONException