Question

请问下iobject java，进行连接查询，怎么去设置返回被连接数据集中的字段

Answer 1

【解决办法】可以参考以下示例代码： Datasource d = workspace.getDatasources().get("geotest"); DatasetVector datasetVector = (DatasetVector)d.getDatasets().get("NewPoint"); JoinItems joinItems = new JoinItems(); JoinItem joinItem = new JoinItem(); joinItem.setJoinType(JoinType.LEFTJOIN); joinItem.setForeignTable("NewPoint_1"); joinItem.setName("myJoinItem"); joinItem.setJoinFilter("NewPoint.col=NewPoint_1.col"); joinItems.add(joinItem); QueryParameter queryParameter = new QueryParameter(); queryParameter.setCursorType(CursorType.STATIC); queryParameter.setJoinItems(joinItems); queryParameter.setResultFields(new String[]{"NewPoint_1.col as col_1","NewPoint.col"}); Recordset recordset = datasetVector.query(queryParameter);