CODEWITHSUNDEEP
javaneo4j
salvador
salvador

Reputation: 1089

How to delete neo4j graph database

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?

Upvotes: 2

Views: 2938

Answers (2)

ShreyansS
ShreyansS

Reputation: 167

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
this will delete all your nodes and their relationships (I think, you mean this as your DATABASE).

Upvotes: 1

Luanne
Luanne

Reputation: 19373

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

Upvotes: 7

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