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Differentiate between mock and cache custom loaders.

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Dave Longley 2015-08-04 16:13:19 -04:00
parent 3330605897
commit 2927e09639
1 changed files with 28 additions and 11 deletions
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README.md
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@ -106,31 +106,48 @@ jsonld_set_document_loader('jsonld_default_secure_document_loader');
// set a default custom document loader // set a default custom document loader
jsonld_set_document_loader('my_custom_doc_loader'); jsonld_set_document_loader('my_custom_doc_loader');
// a custom loader that demonstrates checking a simple in-memory cache // a custom loader that demonstrates using a simple in-memory mock for
// before falling back to the default loader // certain contexts before falling back to the default loader
// note: if you want to set this loader as the new default, you'll need to // note: if you want to set this loader as the new default, you'll need to
// store the previous default in another variable first and access that inside // store the previous default in another variable first and access that inside
// the loader // the loader
global $cache; global $mocks;
$cache = array('http://example.com/mycontext' => (object)array( $mocks = array('http://example.com/mycontext' => (object)array(
'hombre' => 'http://schema.org/name')); 'hombre' => 'http://schema.org/name'));
function mock_load($url) {
function custom_load($url) { global $jsonld_default_load_document, $mocks;
global $jsonld_default_load_document, $cache; if(isset($mocks[$url])) {
if(isset($cache[$url])) {
// return a "RemoteDocument", it has these three properties: // return a "RemoteDocument", it has these three properties:
return (object)array( return (object)array(
'contextUrl' => null, 'contextUrl' => null,
'document' => $cache[$url], 'document' => $mocks[$url],
'documentUrl' => $url); 'documentUrl' => $url);
} }
// use default loader // use default loader
return call_user_func($jsonld_default_load_document, $url); return call_user_func($jsonld_default_load_document, $url);
} }
// use the custom loader for just this call, witout modifying the default one // use the mock loader for just this call, witout modifying the default one
$compacted = jsonld_compact($foo, 'http://example.com/mycontext', array( $compacted = jsonld_compact($foo, 'http://example.com/mycontext', array(
'documentLoader' => 'custom_load')); 'documentLoader' => 'mock_load'));
// a custom loader that uses a simplistic in-memory cache (no invalidation)
global $cache;
$cache = array();
function cache_load($url) {
global $jsonld_default_load_document, $cache;
if(isset($cache[$url])) {
return $cache[$url];
}
// use default loader
$doc = call_user_func($jsonld_default_load_document, $url);
$cache[$url] = $doc;
return $doc;
}
// use the cache loader for just this call, witout modifying the default one
$compacted = jsonld_compact($foo, 'http://schema.org', array(
'documentLoader' => 'cache_load'));
``` ```
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