java - GAE ClassCastException Long cannot be cast to double -



java - GAE ClassCastException Long cannot be cast to double -

getting exception when trying fetch info datastore entity. here code:

persistencemanager pmf = pmf.get().getpersistencemanager(); seek { query query = pmf.newquery(docheader.class); @suppresswarnings("unchecked") list<docheader> docheaders = (list<docheader>) query.execute();

anyone can help in issue.

here object

@persistencecapable(identitytype = identitytype.application) public class docheader { @primarykey @persistent(valuestrategy = idgeneratorstrategy.sequence) private long docheaderid; @persistent private double previouspayment; @persistent private double currentbalance; @persistent private double totalaccountbalance; @persistent private string accountrepresentative; @persistent private double minpayment; }

the exception

classcastexception long cannot cast double

means have @ to the lowest degree 1 docheader entity saved in datastore saved 1 of property beingness long number in java entity specified double , when want query , convert java class, attempted conversion long -> double throws exception.

what may read docheader entitites using low-level datastore api, , alter long properties double supposed double in first place, resave entities. or if current entities not of import (e.g. test data), delete them.

documentation: java low-level datastore api

java

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