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A script for mongo shell to get the collection structure.

View mongo-struc.js
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var conn = new Mongo();
db = conn.getDB(<DB_NAME>);
var cursor = db.<COLLECTION>.find();
var items = [];
items = cursor.toArray();
var dbstruc = {};
for (var i = 0; i < items.length; ++i) {
var target = items[i];
getKP(target,dbstruc);
}
printjson(dbstruc);
 
function getKP (target,dbstruc) {
for (var k in target) {
if(typeof target[k] !== "object"){
if (target.hasOwnProperty(k) && !dbstruc.hasOwnProperty(k)) {
dbstruc[k] = typeof target[k];
}
}else{
dbstruc[k] = {};
getKP(target[k],dbstruc[k]);
}
}
}
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