MongoDB ensureIndex on all databases

ensureIndexOnDBs.js

var databases = db.adminCommand('listDatabases')['databases'];

for (var item in databases) {
    db = db.getMongo().getDB(item['name']);
    db.current.ensureIndex({_web: 1});
    db.current.ensureIndex({_topic: 1});
    db.current.ensureIndex({'TOPICINFO.author': 1});
    db.current.ensureIndex({'TOPICINFO.date': 1});
    db.current.ensureIndex({'CREATEINFO.author': 1});
    db.current.ensureIndex({'CREATEINFO.date': 1});
    db.current.ensureIndex({'TOPICPARENT.name': 1});
    db.current.ensureIndex({'FORM.name': 1});
    db.current.ensureIndex({'address': 1});
    db.current.ensureIndex({'_ACLProfile_DENYTOPICVIEW': 1});
    db.current.ensureIndex({'_ACLProfile_ALLOWTOPICVIEW': 1});
}