limit number of results using magento API V2 - api

Question

Hi I have searched the site for my question but haven't found an easy solution and I think the issue is so basic.
I'm using Api V2 so maybe there's a solution now. Here I go, this is my code:
$api_soap_url = 'http://localhost/magento/api/v2_soap?wsdl=1';
$client = new SoapClient($api_soap_url);
$session_id = $client->__soapCall('login',array($user, $pw));
$data = array($session_id);
$result = $client->__soapCall('customerCustomerList', $data);
This returns all results, I need to limit number of result so I have tried using filters and other solutions found here but no luck.
The only one I haven't tried is this one:
Control the number of results from a Magento API call
But filtering by date doesn't solve my problem and rewriting classes is a ver complex solution for such a simple need.
Thanks in advance

Answer 1

I'm not sure the filter can limit number of result but you can try this:
$complexFilter = array(
'complex_filter' => array(
array(
'key' => 'created_at',
'value' => array('key' => 'gt', 'value' => '2012-05-13 06:11:00')
// where created_at is greater than 2012-05-13 06:11:00
// For example: eq (equals), neq (not equals), gt (greater than), lt (less than), etc.
)
)
);
$result = $client->customerCustomerList($session, $complexFilter);

Answer 2

I ended up overriding app/code/core/Mage/Sales/Model/Order/Api.php, adding a "special magic" field called "collection.limit". Your mileage may vary; I have tight controls on both the Magento installation and the programs (in this case, a set of C# programs) accessing the Magento installation.
My caller simply uses the "magic field" as a key/ value pair, something like this (please test, again, I was calling from C#, so this php should be considered suspect):
$collectionLimitClause = array (
'key' => 'collection.limit',
'value' => array('key' => 'eq', 'value' => '10')
);
In my Magento installation (this part is tested, live and running), I created a Sales/Model/Order/Api.php in my local namespace and over-rode the items function. Around the 32nd or so line of that function, you'll see this:
$apiHelper = Mage::helper('api');
$filters = $apiHelper->parseFilters($filters, $this->_attributesMap['order']);
try {
foreach ($filters as $field => $value) {
$orderCollection->addFieldToFilter($field, $value);
}
} catch (Mage_Core_Exception $e) {
$this->_fault('filters_invalid', $e->getMessage());
}
Instead, I "catch" my own magic limiter with the strncmp here, with an if-else inside the foreach:
$apiHelper = Mage::helper('api');
$filters = $apiHelper->parseFilters($filters, $this->_attributesMap['order']);
try {
foreach ($filters as $field => $value) {
if( !strncmp($field,"collection.limit",16) ) {
$orderCollection->getSelect()->limit($value['eq']);
}
else {
$orderCollection->addFieldToFilter($field, $value);
}
}
} catch (Mage_Core_Exception $e) {
$this->_fault('filters_invalid', $e->getMessage());
}
I'm not overly excited by this, but, I think it's pretty safe and it works.