forked from apache/gora
/
experiment.java
98 lines (84 loc) · 3.77 KB
/
experiment.java
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/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package org.apache.gora.neo4j.experimental;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Iterator;
import java.util.Map;
import org.apache.gora.neo4j.mapping.Neo4jMapping;
import org.apache.gora.neo4j.mapping.Neo4jMappingBuilder;
import org.apache.gora.neo4j.mapping.Property;
import org.neo4j.cypherdsl.core.Cypher;
import org.neo4j.cypherdsl.core.Node;
import org.neo4j.cypherdsl.core.Statement;
import org.neo4j.cypherdsl.core.renderer.Renderer;
public class experiment {
public static void main(String[] args) throws SQLException, IOException {
experiment experiment = new experiment();
experiment.testNeo4jMapping();
}
public void testNeo4jMapping() throws SQLException, IOException {
Neo4jMappingBuilder neo4jMappingBuilder = new Neo4jMappingBuilder(null);
String path = "src/test/resources/gora-neo4j-mapping.xml";
File file = new File(path);
FileInputStream fileInputStream = new FileInputStream(file);
Neo4jMapping readMapping = neo4jMappingBuilder.readMapping(fileInputStream);
System.out.println(readMapping.getLabel());
System.out.println(readMapping.getNodeKey().getName());
System.out.println(readMapping.getNodeKey().getSqltype());
for (Iterator<Map.Entry<String, Property>> it = readMapping.getProperties().entrySet().iterator(); it.hasNext();) {
Map.Entry<String, Property> next = it.next();
System.out.println(next.getKey());
System.out.println(next.getValue().getName());
System.out.println(next.getValue().getSqltype());
}
}
private static void testNeo4jCon() throws SQLException {
try (Connection con = DriverManager.getConnection("jdbc:neo4j:bolt://localhost/?flatten=-1", "neo4j", "admin")) {
//Insert 10 Persons
for (int i = 0; i < 10; i++) {
Node named = Cypher.node("Person").named("person_" + i).withProperties("name", Cypher.literalOf("Tom Hanks " + i));
Statement build = Cypher.create(named).build();
Renderer defaultRenderer = Renderer.getDefaultRenderer();
String render = defaultRenderer.render(build);
try (PreparedStatement stmt = con.prepareStatement(render)) {
stmt.execute();
}
}
//Query 10 Persosn by name
for (int i = 0; i < 10; i++) {
Node named = Cypher.node("Person").withProperties("name", Cypher.literalOf("Tom Hanks " + i)).named("p");
Statement build = Cypher.match(named).returning(named).build();
Renderer defaultRenderer = Renderer.getDefaultRenderer();
String render = defaultRenderer.render(build);
try (PreparedStatement stmt = con.prepareStatement(render)) {
try (ResultSet rs = stmt.executeQuery()) {
while (rs.next()) {
System.out.println("Hello, " + rs.getString("p.name"));
}
}
}
}
}
}
}