I am new to cypher. I want to load a csv using cypher in java. I googled and found the following piece
LOAD CSV WITH HEADERS FROM "http://neo4j.com/docs/2.3.1/csv/import/movies.csv" AS csvLine
MERGE (country:Country { name: csvLine.country })
.....
How to use this load csv query into java code. I tried something like this.
import java.io.File;
import java.io.IOException;
import java.util.Map;
import java.util.Map.Entry;
import javax.naming.spi.DirStateFactory.Result;
import org.neo4j.cypher.javacompat.ExecutionEngine;
import org.neo4j.cypher.javacompat.ExecutionResult;
import org.neo4j.graphdb.Direction;
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.Relationship;
import org.neo4j.graphdb.RelationshipType;
import org.neo4j.graphdb.Transaction;
import org.neo4j.graphdb.factory.GraphDatabaseFactory;
import org.neo4j.kernel.impl.util.FileUtils;
public class test_new {
private static final String DB_PATH = "C:...../default.graphdb";
public static void main( final String[] args ) throws IOException
{
GraphDatabaseService db = new GraphDatabaseFactory().newEmbeddedDatabase( DB_PATH );
Transaction tx1 = db.beginTx();
try{
ExecutionEngine engine = new ExecutionEngine(db);
ExecutionResult result = engine.execute("LOAD CSV WITH HEADERS FROM "C:/..../Mock_data.csv" AS csvLine ");
tx1.success();
} finally {
tx1.close();
}
db.shutdown();
}
}
But I am not sure about this line.
ExecutionResult result = engine.execute("LOAD CSV WITH HEADERS FROM "C:/..../Mock_data.csv" AS csvLine ");
It throws syntax error.
Exception in thread "main" java.lang.Error: Unresolved compilation problems:
Syntax error, insert ")" to complete MethodInvocation
Syntax error, insert ";" to complete LocalVariableDeclarationStatement
I don't know the syntax construction myself. How to load the csv path?
To correct the Java syntax error, you need to escape double quotes in the middle of the string; otherwise it looks like your string literal finishes at the quote around the path:
Finally this Worked for me!!