datastore

问题 My application needs configurable columns , and titles of these columns get configured in the begining, If relation database I would have created generic columns in table like CodeA, CodeB etc for this need because it helps queering on these columns (Code A = 11 ) it also helps in displaying the values (if that columns stores code and value) but now I am using Non Relational database Datastore (and I am new to it), should I follow the same old approach or I should use collection (Key Value

问题 My application needs configurable columns , and titles of these columns get configured in the begining, If relation database I would have created generic columns in table like CodeA, CodeB etc for this need because it helps queering on these columns (Code A = 11 ) it also helps in displaying the values (if that columns stores code and value) but now I am using Non Relational database Datastore (and I am new to it), should I follow the same old approach or I should use collection (Key Value

问题 I have problems uploading an iso file to a datastore. The server (vcsim) says: 2018/05/17 11:55:54 failed to locate datastore with query params: dcPath=%2FDC0&dsName=LocalDS_0 The information about the datastore is: govc datastore.upload -dc="DC0" -k=true -ds LocalDS_0 -debug=true /home/jorge/Downloads/ipxe.iso ipxe.iso [17-05-18 13:54:33] Uploading... Error: 404 Not Found govc: 404 Not Found But when I execute this command it fails: govc datastore.info -dc="DC0" -k=true LocalDS_0 Name:

问题 votergroup = db.GqlQuery("SELECT * FROM Voter WHERE lastname = :1", 'AGEE') for voter in votergroup: voter.email = 'testemail@testemail.com' db.put(votergroup) The above code doesn't seem to be updating the records as it shows in the appengine documentation. I also tried using a query object to no avail. I know votergroup is pulling records, because I did a count on the object when debugging and it showed 10 records. In fact, before the db.put, I looped through voter.email, and it seems like

问题 I work with iPhone iOS 4.3. In my project I need a read-only, repopulated table of data (say a table with 20 rows and 20 fields). This data has to be fetched by key on the row. What is better approach? CoreData Archives, SQLite, or other? And how can I prepare and store this table? Thank you. 回答1: I would use core data for that. Drawback: You have to write a program (Desktop or iOS) to populate the persistent store. How to use a pre-populated store, you should have a look into the Recipes

问题 I work with iPhone iOS 4.3. In my project I need a read-only, repopulated table of data (say a table with 20 rows and 20 fields). This data has to be fetched by key on the row. What is better approach? CoreData Archives, SQLite, or other? And how can I prepare and store this table? Thank you. 回答1: I would use core data for that. Drawback: You have to write a program (Desktop or iOS) to populate the persistent store. How to use a pre-populated store, you should have a look into the Recipes

问题 I have an entire app running on GAE and its datastore... now I need to migrate the application and its datastore to mysql db. What is the best approach for acchieving this, is there an bulkdownloader if I used the Java API. It's been 4 days trying to look for this answer, thank you very much in advaced. Regards 回答1: I'd use approcket for that. it's a tool you can use to sync your GAE Datastore with a MySQL datebase. It's well documented but not massively active. I've used it before, and it

问题 I've got a simple question about datastore keys . If I delete an entity, is there any possibility that the key will be created again? or each key is unique and can be generated only one-time? Thanks. 回答1: It is definitely possible to re-use keys. Easy to test, for example using the datastore admin page: create an entity for one of your entity models using a custom/specified key name and some property values delete the entity create another one using the same key name and different property

问题 I'm trying to upload my dataset to datastore. I create dataset and try to upload dataset to datastore with "Upload to datastore" menu in ckan interface. I got "Upload error: Could not connect to DataPusher." error message in web not in any log(ckan log, datapusher log) This is contents of my development.ini sqlalchemy.url = postgresql://ckan_default:MYPASS@localhost/ckan_default ckan.datastore.write_url = postgresql://ckan_default:MYPASS@localhost/datastore_default ckan.datastore.read_url =

问题 I'm trying enable the Parse Local Datastore. In the Parse Docs, they said to put the code enableLocalDatastore before setApplicationId:clientKey: , but this throws an exception: Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'You have to call setApplicationId:clientKey: on Parse to configure Parse.' 回答1: v1.6.0 Place the code for enableLocalDatastore after setting applicationId and clientKey. It looks like it was simply a mistake in their documentation.