Handler { private List<String> dataSource; public void setDataSource(List<String> dataSource) { this.dataSource = dataSource; } public void processData() { if (dataSource == null || dataSource.isEmpty()) { throw new IllegalArgumentException("Data sources cannot be empty."...
400 Invalid.Operation You cannot delete the bindingCalcEngine that is bound to the data source. 数据源绑定的计算引擎不允许删除 400 Invalid.Param.Odps.EngineIdOrConnectStrEmpty Either the compute engine ID or the connection string must be specified when data source type is ODPS. - 400 Required.Pa...
The ObjectDataSource control allows you to cache all types of data, but you should not cache objects that retain resources or state that cannot be shared to service multiple requests (for example, an open SqlDataReader object), because the same instance of the object will be used to service...
1、Map<Object, Object> targetDataSources 保存了所有可能的数据源,key为数据库的key,value为DataSource对象或字符串形式的连接信息 2、Object defaultTargetDataSource 保存了默认的数据源,用于找不到具体的数据源时使用 3、afterPropertiesSet() 方法 ①:解析targetDataSources数据源信息成<key,DataSource>的形式,保存...
On theInserttab, in theData Views & Formsgroup, clickData Viewand chooseEmpty Data View. In the empty Data View placeholder that appears, click theClick here to select a data source. In theData Sources Pickerdialog box, select your data source and clickOK. ...
Use the Expression Builder to create the calculation for the field. Remember that you can only use other fields from the same table as data sources for the calculation. For Help using the Expression Builder, see the articleUse the Expression Builder. ...
the second item could be aTextBox(which inherits fromControl). If, on the other hand, the first item is aTextBox, the second object cannot be aControl. Further, theArrayListmust have items in it when it is bound. An emptyArrayListwill result in an empty grid. In addition, the objects...
If you have workbooks that were created before Tableau Desktop 8.2 that use Microsoft Excel or text file data sources, or you are using the Excel or text file legacy connection option, you have the option to upgrade the data sources in your workbook. By upgrading your Excel and text file ...
Parameters are added to theInsertParameterscollection from three sources: From the data-bound control, at run time. From theInsertParameterselement, declaratively. From theInsertingmethod, programmatically. First, any parameters that are generated from data-bound controls are added to theInsertParameterscol...
datasource = new atlas.source.DataSource(); map.sources.add(datasource); //Create a point feature and add it to the data source. datasource.add(new atlas.data.Point(map.getCamera().center)); //Add a layer for rendering point data as symbols. map.layers.add(new atlas.layer.SymbolLaye...