de.julielab.neo4j.plugins.ahocorasick

Class ACFactoryEmbedded

java.lang.Object

org.neo4j.server.plugins.ServerPlugin

de.julielab.neo4j.plugins.ahocorasick.ACFactoryEmbedded

public class ACFactoryEmbedded
extends org.neo4j.server.plugins.ServerPlugin

Constructor Summary

Constructors

Constructor and Description
ACFactoryEmbedded()

Method Summary

Modifier and Type	Method and Description
static boolean	addListToDictTree(org.neo4j.graphdb.GraphDatabaseService graphDb, String jsonACDict, String listEntries) Adds a list of entries to a DictTree, which is not prepared for searching
static boolean	addListToPreparedDictTree(org.neo4j.graphdb.GraphDatabaseService graphDb, String jsonACDict, String dictEntries) Adds a list of entries to a DictTree, which is prepared for searching
static boolean	createDictTree(org.neo4j.graphdb.GraphDatabaseService graphDb, String jsonACDict) Creates a new root of a DictTree, where entries could be add.
static boolean	deleteDictTree(org.neo4j.graphdb.GraphDatabaseService graphDb, String name) Deletes a complete DictTree in a GraphDatabase.
static boolean	prepareDictTreeForSearch(org.neo4j.graphdb.GraphDatabaseService graphDb, String jsonACDict) Prepares the DictTree for searching.
static boolean	unprepareDictTree(org.neo4j.graphdb.GraphDatabaseService graphDb, String name) Unprepare the DictTree, so that it can't be searched anymore.

Methods inherited from class org.neo4j.server.plugins.ServerPlugin

getDefaultExtensionPoints, loadServerExtender, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ACFactoryEmbedded

public ACFactoryEmbedded()

Method Detail

createDictTree

public static boolean createDictTree(org.neo4j.graphdb.GraphDatabaseService graphDb,
                                     String jsonACDict)
                              throws org.neo4j.shell.util.json.JSONException

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

Parameters:

graphDb - - Database where the Dict-Tree should be created

name - - Name of the Dictionary

Returns:

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

Throws:

org.neo4j.shell.util.json.JSONException

deleteDictTree

public static boolean deleteDictTree(org.neo4j.graphdb.GraphDatabaseService graphDb,
                                     String name)
                              throws IOException

Deletes a complete DictTree in a GraphDatabase.

Parameters:

graphDb - - GraphDatabase

name - - Name of the Dict-Tree

Returns:

true if the tree is deleted, false if the tree with the name does not exist

Throws:

IOException

addListToDictTree

public static boolean addListToDictTree(org.neo4j.graphdb.GraphDatabaseService graphDb,
                                        String jsonACDict,
                                        String listEntries)
                                 throws org.neo4j.shell.util.json.JSONException,
                                        IOException

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

Parameters:

graphDb - - GraphDatabase

name - - name of the DictTree

listEntries - - The dictionary entries as a JSON map of the form { 'dictEntries':[{'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

addListToPreparedDictTree

public static boolean addListToPreparedDictTree(org.neo4j.graphdb.GraphDatabaseService graphDb,
                                                String jsonACDict,
                                                String dictEntries)
                                         throws org.neo4j.shell.util.json.JSONException

Adds a list of entries to a DictTree, which is prepared for searching

Parameters:

graphDb - - GraphDatabase

name - - name of the DictTree

dictEntries - - an array of the form [{ 'entry':'entry1','attributes':{'attribute1':'attValue1','attribute2':'attValue2'}} , {'entry':'entry2','attributes':{'attribute3':'attValue1'}}] 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

prepareDictTreeForSearch

public static boolean prepareDictTreeForSearch(org.neo4j.graphdb.GraphDatabaseService graphDb,
                                               String jsonACDict)
                                        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:

graphDb - - Graphdatabase

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

unprepareDictTree

public static boolean unprepareDictTree(org.neo4j.graphdb.GraphDatabaseService graphDb,
                                        String name)
                                 throws IOException,
                                        org.neo4j.shell.util.json.JSONException

Unprepare the DictTree, so that it can't be searched anymore.

Parameters:

graphDb - - GraphDatabase

name - - Name of the dictionary

Returns:

true if the DictTree is unprepared, false if the DictTree does not exist

Throws:

IOException

org.neo4j.shell.util.json.JSONException