Due to a ransomware attack, the wiki was reverted to a July 2022 version. . We apologize for the lack of a more recent valid backup.
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The sample table uses fake data for demonstration purposes. A more realistic implementation would use one or more services to obtain the required data. The device table, for example, has an implementation something like this:
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@Override
protected void populateTable(TableModel tm, ObjectNode payload) {
DeviceService ds = get(DeviceService.class);
MastershipService ms = get(MastershipService.class);
for (Device dev : ds.getDevices()) {
populateRow(tm.addRow(), dev, ds, ms);
}
}
private void populateRow(TableModel.Row row, Device dev,
DeviceService ds, MastershipService ms) {
DeviceId id = dev.id();
String protocol = dev.annotations().value(PROTOCOL);
row.cell(ID, id)
.cell(MFR, dev.manufacturer())
.cell(HW, dev.hwVersion())
.cell(SW, dev.swVersion())
.cell(PROTOCOL, protocol != null ? protocol : "")
.cell(NUM_PORTS, ds.getPorts(id).size())
.cell(MASTER_ID, ms.getMasterFor(id));
}
} |
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(3) define SampleDetailRequestHandler class to handle "sampleDetailRequest" events from the client. Note that this class extends the base RequestHandler class:
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private static final String SAMPLE_DETAIL_REQ = "sampleDetailsRequest";
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private final class SampleDetailRequestHandler extends RequestHandler {
private SampleDetailRequestHandler() {
super(SAMPLE_DETAIL_REQ);
}
...
} |
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(3a) implement process(...) to return detail information about the "selected" row:
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private static final String SAMPLE_DETAIL_RESP = "sampleDetailsResponse";
private static final String DETAILS = "details";
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private static final String COMMENT = "comment";
private static final String RESULT = "result";
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@Override
public void process(long sid, ObjectNode payload) {
String id = string(payload, ID, "(none)");
// SomeService ss = get(SomeService.class);
// Item item = ss.getItemDetails(id)
// fake data for demonstration purposes...
Item item = getItem(id);
ObjectNode rootNode = MAPPER.createObjectNode();
ObjectNode data = MAPPER.createObjectNode();
rootNode.set(DETAILS, data);
if (item == null) {
rootNode.put(RESULT, "Item with id '" + id + "' not found");
log.warn("attempted to get item detail for id '{}'", id);
} else {
rootNode.put(RESULT, "Found item with id '" + id + "'");
data.put(ID, item.id());
data.put(LABEL, item.label());
data.put(CODE, item.code());
data.put(COMMENT, "Some arbitrary comment");
}
sendMessage(SAMPLE_DETAIL_RESP, 0, rootNode);
} |
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