Cloud DB Java Server SDK Demo does not compile

[alterEgo123]

Compiling the Cloud DB Java Server SDK Demo App.java returns the following errors

public class main {
       ^
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:19: error: package com.huawei.agc.clouddb.quickstart.model does not exist
import com.huawei.agc.clouddb.quickstart.model.BookEditFields;
                                              ^
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:20: error: package com.huawei.agc.clouddb.quickstart.model does not exist
import com.huawei.agc.clouddb.quickstart.model.BookInfo;
                                              ^
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:21: error: package com.huawei.agc.clouddb.quickstart.model does not exist
import com.huawei.agc.clouddb.quickstart.model.CloudDBZoneWrapper;
                                              ^
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:22: error: package com.huawei.agc.clouddb.quickstart.utils does not exist
import com.huawei.agc.clouddb.quickstart.utils.BookUtils;
                                              ^
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:23: error: package com.huawei.agc.clouddb.quickstart.utils does not exist
import com.huawei.agc.clouddb.quickstart.utils.DateUtils;
                                              ^
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:24: error: package com.huawei.agconnect.server.clouddb.exception does not exist
import com.huawei.agconnect.server.clouddb.exception.AGConnectCloudDBException;
                                                    ^
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:25: error: package com.huawei.agconnect.server.clouddb.request does not exist
import com.huawei.agconnect.server.clouddb.request.CloudDBZoneQuery;
                                                  ^
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:29: error: cannot find symbol
        CloudDBZoneWrapper cloudDBZoneWrapper = new CloudDBZoneWrapper();
        ^
  symbol:   class CloudDBZoneWrapper
  location: class main
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:29: error: cannot find symbol
        CloudDBZoneWrapper cloudDBZoneWrapper = new CloudDBZoneWrapper();
                                                    ^
  symbol:   class CloudDBZoneWrapper
  location: class main
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:30: error: cannot find symbol
        BookUtils bookUtils = new BookUtils();
        ^
  symbol:   class BookUtils
  location: class main
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:30: error: cannot find symbol
        BookUtils bookUtils = new BookUtils();
                                  ^
  symbol:   class BookUtils
  location: class main
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:47: error: cannot find symbol
            CloudDBZoneQuery<BookInfo> query = CloudDBZoneQuery.where(BookInfo.class)
            ^
  symbol:   class CloudDBZoneQuery
  location: class main
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:47: error: cannot find symbol
            CloudDBZoneQuery<BookInfo> query = CloudDBZoneQuery.where(BookInfo.class)
                             ^
  symbol:   class BookInfo
  location: class main
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:48: error: cannot find symbol
                    .greaterThan(BookEditFields.PRICE, 55.0);
                                 ^
  symbol:   variable BookEditFields
  location: class main
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:47: error: cannot find symbol
            CloudDBZoneQuery<BookInfo> query = CloudDBZoneQuery.where(BookInfo.class)
                                                                      ^
  symbol:   class BookInfo
  location: class main
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:47: error: cannot find symbol
            CloudDBZoneQuery<BookInfo> query = CloudDBZoneQuery.where(BookInfo.class)
                                               ^
  symbol:   variable CloudDBZoneQuery
  location: class main
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:51: error: cannot find symbol
        } catch (AGConnectCloudDBException e) {
                 ^
  symbol:   class AGConnectCloudDBException
  location: class main
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:69: error: cannot find symbol
            CloudDBZoneQuery<BookInfo> query = CloudDBZoneQuery.where(BookInfo.class)
            ^
  symbol:   class CloudDBZoneQuery
  location: class main
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:69: error: cannot find symbol
            CloudDBZoneQuery<BookInfo> query = CloudDBZoneQuery.where(BookInfo.class)
                             ^
  symbol:   class BookInfo
  location: class main
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:70: error: cannot find symbol
                    .lessThan(BookEditFields.PUBLISH_TIME, DateUtils.parseDate("1900-01-01 00:00:00 000"));
                              ^
  symbol:   variable BookEditFields
  location: class main
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:69: error: cannot find symbol
            CloudDBZoneQuery<BookInfo> query = CloudDBZoneQuery.where(BookInfo.class)
                                                                      ^
  symbol:   class BookInfo
  location: class main
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:69: error: cannot find symbol
            CloudDBZoneQuery<BookInfo> query = CloudDBZoneQuery.where(BookInfo.class)
                                               ^
  symbol:   variable CloudDBZoneQuery
  location: class main
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:70: error: cannot find symbol
                    .lessThan(BookEditFields.PUBLISH_TIME, DateUtils.parseDate("1900-01-01 00:00:00 000"));
                                                           ^
  symbol:   variable DateUtils
  location: class main
src/main/java/com/huawei/agc/clouddb/quickstart/App.java:73: error: cannot find symbol
        } catch (AGConnectCloudDBException e) {
                 ^
  symbol:   class AGConnectCloudDBException
  location: class main
25 errors

[Mayism]

@alterEgo123 The dependency related to the error exists in the demo and has been imported to the app.java file (for example, the BookInfo class exists in the directory of .\src\main\java\com\huawei\agc\clouddb\quickstart\model).Check whether the compiled demo project is consistent with that in the repo file and try again.for more guides,please refer to documents.

[alterEgo123]

@Mayism Even the JavaScript demo doesn't work. It returns this error

    at Function.CloudDBSdkUtils.getCloudGwUrl (/home/rsf/Desktop/agc/agc-demos/Server/agc-clouddb-demo-javascript/node_modules/@agconnect/database-server/dist/utils/CloudDBSdkUtils.js:34:56)
    at new HttpsCommunicator (/home/rsf/Desktop/agc/agc-demos/Server/agc-clouddb-demo-javascript/node_modules/@agconnect/database-server/dist/communicator/https/HttpsCommunicator.js:79:64)
    at AGConnectCloudDB.CloudDBService (/home/rsf/Desktop/agc/agc-demos/Server/agc-clouddb-demo-javascript/node_modules/@agconnect/database-server/dist/services/CloudDBService.js:29:30)
    at new AGConnectCloudDB (/home/rsf/Desktop/agc/agc-demos/Server/agc-clouddb-demo-javascript/node_modules/@agconnect/database-server/dist/services/AGConnectCloudDB.js:31:28)
    at Function.AGConnectCloudDB.initialize (/home/rsf/Desktop/agc/agc-demos/Server/agc-clouddb-demo-javascript/node_modules/@agconnect/database-server/dist/services/AGConnectCloudDB.js:49:37)
    at new CloudDBZoneWrapper (/home/rsf/Desktop/agc/agc-demos/Server/agc-clouddb-demo-javascript/src/model/CloudDBZoneWrapper.js:15:38)
    at start (/home/rsf/Desktop/agc/agc-demos/Server/agc-clouddb-demo-javascript/src/Start.js:6:32)
    at Object.<anonymous> (/home/rsf/Desktop/agc/agc-demos/Server/agc-clouddb-demo-javascript/src/Start.js:56:1)
    at Module._compile (internal/modules/cjs/loader.js:1085:14)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)
CloudDBClient is null, try re-initialize it
CloudDBClient is null, try re-initialize it
CloudDBClient is null, try re-initialize it
CloudDBClient is null, try re-initialize it
CloudDBClient is null, try re-initialize it
CloudDBClient is null, try re-initialize it
queryBooks=> TypeError: Cannot read property 'executeQuery' of undefined
    at CloudDBZoneWrapper.startAtQuery (/home/rsf/Desktop/agc/agc-demos/Server/agc-clouddb-demo-javascript/src/model/CloudDBZoneWrapper.js:114:55)
    at start (/home/rsf/Desktop/agc/agc-demos/Server/agc-clouddb-demo-javascript/src/Start.js:36:30)
    at processTicksAndRejections (internal/process/task_queues.js:95:5)
queryBooks=> TypeError: Cannot read property 'executeAverageQuery' of undefined
    at CloudDBZoneWrapper.averageQuery (/home/rsf/Desktop/agc/agc-demos/Server/agc-clouddb-demo-javascript/src/model/CloudDBZoneWrapper.js:125:55)
    at start (/home/rsf/Desktop/agc/agc-demos/Server/agc-clouddb-demo-javascript/src/Start.js:39:30)
    at processTicksAndRejections (internal/process/task_queues.js:95:5)
TypeError: Cannot read property 'runTransaction' of undefined
    at CloudDBZoneWrapper.deleteOverdueBooks (/home/rsf/Desktop/agc/agc-demos/Server/agc-clouddb-demo-javascript/src/model/CloudDBZoneWrapper.js:143:54)
    at start (/home/rsf/Desktop/agc/agc-demos/Server/agc-clouddb-demo-javascript/src/Start.js:44:34)
    at processTicksAndRejections (internal/process/task_queues.js:95:5)
CloudDBClient is null, try re-initialize it
CloudDBClient is null, try re-initialize it

I have changed my credentials file and created the Cloud DB Zone as mentioned in the tutorial.

[Mayism]

@alterEgo123 the property of 'executeQuery' depends on the javascript server sdk of clouddb. maybe you should integrate it firstly to solve the error.

[alterEgo123]

'undefined' refers to cloudDBZoneClient in CloudDBZoneWrapper which is not being initialized, even though I've set credentialPath and zoneName

[devwithzachary]

Hello, @alterEgo123 can you please provide the full stack trace of the java error. I shall take a look at this for you, lets focus on the java error first. If you do want to look into the javascript as well let's keep it on a separate ticket to avoid confusion.

Thank you!