Hi Andreas, Nick,
I've added an example to the qooxdoo-contrib project RpcExample to show how
to implement a Remote Table Model using JSON-RPC. The backend code is
*very* simple and included below. Do you think you two could add these two
methods to the test infrastructure in your backend, so that the RpcExample
continues to be usable with any of the three core backends? The two
required methods are qooxdoo.remoteTableTest.getRowCount() and
qooxdoo.remoteTableTest.getRowData().
Thanks!
Derrell
<?php
/*
* qooxdoo - the new era of web development
*
* http://qooxdoo.org
*
* Copyright:
* 2008 Derrell Lipman
*
* License:
* LGPL: http://www.gnu.org/licenses/lgpl.html
* EPL: http://www.eclipse.org/org/documents/epl-v10.php
* See the LICENSE file in the project's top-level directory for
details.
*
* Authors:
* * Derrell Lipman (derrell)
*/
/*
* This is a very simple example of server-generated data for a table which
* uses a Remote Table Model.
*
* In this simple example, we provide each of the years between 1900 and
2020
* inclusive, along with a boolean indicator of whether the year is/was a
leap
* year. Table row 0 contains the data for year 1900, row 1 has year 1901,
* etc.
*/
class class_remoteTableTest
{
/**
* Get the row count of the table
*
* @param params
* An array containing the parameters to this method. None expected.
*
* @param error
* An object of class JsonRpcError.
*
* @return
* Success: The number of rows in the table
* Failure: null
*/
function method_getRowCount($params, $error)
{
if (count($params) != 0)
{
$error->SetError(JsonRpcError_ParameterMismatch,
"Expected no parameters; got " .
count($params));
return $error;
}
// Since we're handling years 1900-2020 inclusive, we have a fixed
// number of years, and thus a fixed row count.
return 121;
}
/**
* Get the row data, given a starting and ending row number. In a
"real"
* backend for the Remote table model, one would likely retrieve row
data
* from a database or some other "massive" storage implementation. In
* this simple example, we dynamically generate the data.
*
* @param params
* An array containing the parameters to this method:
* params[0] : firstRow
* params[1] : lastRow
*
* @param error
* An object of class JsonRpcError.
*
* @return
* Success: The data model data for the requested rows. The data is
* returned as an array of row arrays. Each row array
contains
* the year number as its first element and a boolean
* indicating whether that year is a leap year as its second
* element.
* Failure: null
*/
function method_getRowData($params, $error)
{
if (count($params) != 2)
{
$error->SetError(JsonRpcError_ParameterMismatch,
"Expected 2 parameters; got " .
count($params));
return $error;
}
// Create an array of rows
$rows = Array();
// For each requested row...
for ($row = $params[0],
$year = 1900 + $params[0];
$row <= $params[1];
$row++,
$year++)
{
// Create an array of data for this row
$rowData = Array();
// Get the data for this row. In this example case, we
calculate
// it, but we could as well be retrieving it from a database.
$rowData[] = $year;
$rowData[] = (($year % 4 == 0 && $year % 100 != 0) ||
($year %400 == 0));
// Add this row data to the result set
$rows[] = $rowData;
}
// Give 'em what they came for!
return $rows;
}
}
?>
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