如何删除neo4j图数据库

Question

I am opening the database with BatchInserter and I want after the a while to delete the database. I search but I didn't find any drop or clear function. What is the proper way to delete the database?

UPDATE: In order to solve my problem at first I close (shutdown) the database and then I am trying to delete the database directory with the following code:

public void deleteRecursively(File file ) {
    if ( !file.exists() ) {
        return;
    }
    if ( file.isDirectory() ) {
        for ( File child : file.listFiles() ) {
            deleteRecursively( child );
        }
    }
    if ( !file.delete() ) {
        throw new RuntimeException( "Couldn't empty database." );
    }
}

But the directory is not always deleted successfully. I think that the problem appears when the database get big. Why is this happening?

Answer 1

You can delete the entire directory, or if you want to just delete the contents, you can do

start n=node(*)
match n-[r?]-()
delete r,n

in 1.9.*

and in 2.0, I guess the same:

match n
with n    
optional match n-[r]-()
delete r,n

Answer 2

Refer to luanne's answer and go with manually deleting database directory, say "Database_name.graphdb" (If you want to delete DATABASE) or use this MATCH (n)
OPTIONAL MATCH (n)-[r]-()
DELETE n,r MATCH (n)
OPTIONAL MATCH (n)-[r]-()
DELETE n,r
this will delete all your nodes and their relationships (I think, you mean this as your DATABASE).