sorsaffari’s gists

sorsaffari / JsonMigration.java

Created October 23, 2018 16:37

Migrating JSON data into Grakn using the Java client

	package ai.grakn.examples;

	import ai.grakn.GraknTxType;
	import ai.grakn.Keyspace;
	import ai.grakn.client.Grakn;
	import ai.grakn.util.SimpleURI;

	/**
	* reads a JSON encoded value as a stream of tokens,
	* @see <a href="https://google.github.io/gson/apidocs/com/google/gson/stream/JsonReader.html">JsonReader</a>

sorsaffari / CsvMigration.java

Created October 23, 2018 16:32

Migrating CSV data into Grakn using the Java client

	package ai.grakn.examples;

	import ai.grakn.GraknTxType;
	import ai.grakn.Keyspace;
	import ai.grakn.client.Grakn;
	import ai.grakn.util.SimpleURI;

	/**
	* a collection of fast and reliable Java-based parsers for CSV, TSV and Fixed Width files
	* @see <a href="https://www.univocity.com/pages/univocity_parsers_documentation">univocity</a>

sorsaffari / Migration_10c2.java

Last active October 23, 2018 16:27

	// other imports
	import javax.xml.stream.XMLInputFactory;
	import javax.xml.stream.XMLStreamConstants;
	import javax.xml.stream.XMLStreamException;
	import javax.xml.stream.XMLStreamReader;

	public class XmlMigration {
	abstract static class Input {
	String path;
	String selector;

sorsaffari / Migration_10c1.java

Last active October 23, 2018 16:27

Java Migration Example: including XML selector

	// imports

	public class XmlMigration {
	abstract static class Input {
	String path;
	String selector;
	public Input(String path, String selector) {
	this.path = path;
	this.selector = selector;
	}

sorsaffari / Migration_10b.java

Last active October 23, 2018 16:26

Java Migration Example: reading JSON

	// other imports
	import com.google.gson.stream.JsonReader;

	public class Migration {
	abstract static class Input {...}

	public static void main(String[] args) {...}

	static void connectAndMigrate(Collection<Input> inputs) {...}

sorsaffari / pom_5.xml

Created October 23, 2018 16:01

Java Migration Example: Gson in pom.xml

	<dependency>
	<groupId>com.google.code.gson</groupId>
	<artifactId>gson</artifactId>
	<version>2.7</version>
	</dependency>

sorsaffari / Migration_10a.java

Last active October 23, 2018 16:26

Java Migration Example: parsing CSV

	// other imports

	import com.univocity.parsers.csv.CsvParser;
	import com.univocity.parsers.csv.CsvParserSettings;

	public class Migration {
	abstract static class Input {...}

	public static void main(String[] args) {...}

sorsaffari / Migration_9.java

Last active October 23, 2018 16:26

Java Migration Example: initialising InputStreamReader

	// other imports
	import java.io.InputStreamReader;
	import java.io.Reader;


	public class Migration {
	abstract static class Input {...}

	public static void main(String[] args) {...}

sorsaffari / pom_4.xml

Last active October 23, 2018 15:54

Java Migration Example: univocity in pom.xml

	<dependency>
	<groupId>com.univocity</groupId>
	<artifactId>univocity-parsers</artifactId>
	<version>2.7.6</version>
	</dependency>

sorsaffari / migration_8.java

Last active October 23, 2018 16:25

Java Migration Example: load data into Grakn

	// imports

	public class Migration {
	abstract static class Input {...}

	public static void main(String[] args) {
	Collection<Input> inputs = initialiseInputs();
	connectAndMigrate(inputs);
	}

Soroush Saffari sorsaffari