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This file is part of Logtalk https://logtalk.org/ SPDX-FileCopyrightText: 1998-2023 Paulo Moura <pmoura@logtalk.org> SPDX-License-Identifier: Apache-2.0

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

% be sure to have installed Neo4j; see the NOTES.txt file for details

% start by setting the Java CLASSPATH environment variable; three backend % Prolog systems are supported (XVM, SWI-Prolog, and YAP) and for each one % there's a Bash script file that sets the CLASSPATH environment variable % when sourced; for example, when using SWI-Prolog (if necessary, edit the % scripts for the location of the Neo4j JAR files):

$ cd "$LOGTALKUSER/examples/neo4j" $ . set_classpath_swi.sh

% second, start Logtalk and load the example:

| ?- logtalk_load(neo4j(loader)). ...

% print a greeting message:

| ?- hello_world('bolt://localhost:7687', 'neo4j', 'password')::print_greeting('Hello world!').

Hello world!, from node 0 yes

% find the people Neo knows in the Matrix:

| ?- matrix('bolt://localhost:7687', 'neo4j', 'password')::neo_knows(Who).

Who = = ['Agent Smith', 'Cypher', 'Morpheus', 'Trinity'] yes