如果您使用 Smart GWT LGPL :
请阅读 RestDataSource 的 Javadocs,因为它详细解释了这一点:http ://www.smartclient.com/smartgwt/javadoc/com/smartgwt/client/data/RestDataSource.html
还可以查看 RestDataSource 示例:http ://www.smartclient.com/smartgwt/showcase/#featured_restfulds
如果您使用 Smart GWT EE,那么 1) 如果您使用 SQL 连接器,那么您需要在服务器上编写 0 个代码,因为 Smart GWT 服务器端代码负责将数据绑定与您的数据库表连接起来。2) 如果您需要对服务器数据绑定进行模式控制,您可以在滚动(获取)或插入/更新/删除发生时调用自己的服务器 API。查看此示例的来源:http ://www.smartclient.com/smartgwtee/showcase/#javabeans
单击 View Source 按钮并检查 SupplyItemDMI 类的源代码。注意如何获取请求的起始行、结束行参数。
// By default, for a DSRequest of type "fetch", a method named "fetch" is invoked.
// You can customize this via the <serverObject> declaration.
public DSResponse fetch(DSRequest dsRequest)
throws Exception {
log.info("procesing DMI fetch operation");
// Fetch a List of matching SupplyItem Beans from some pre-existing Java object model
// provided by you, represented by "SupplyItemStore" in this example
List matchingItems =
SupplyItemStore.findMatchingItems((Long) dsRequest.getFieldValue("itemID"),
(String) dsRequest.getFieldValue("itemName"));
// this implementation shows data paging (returning only ranges of requested records)
long startRow = dsRequest.getStartRow();
long endRow = dsRequest.getEndRow();
long totalRows = matchingItems.size();
DSResponse dsResponse = new DSResponse();
dsResponse.setTotalRows(totalRows);
dsResponse.setStartRow(startRow);
endRow = Math.min(endRow, totalRows);
dsResponse.setEndRow(endRow);
// trim the data to the requested range of records. In a real application, the startRow
// and endRow would be passed to the ORM layer or to SQL for maximum efficiency.
List results;
if (totalRows > 0) {
results = matchingItems.subList((int) dsResponse.getStartRow(),
(int) dsResponse.getEndRow());
} else {
results = matchingItems;
}
// just return the List of matching beans
dsResponse.setData(results);
return dsResponse;
}