/**
* Retrieve a resource by lom_id (its an internal identification) from the database
*
* @return String json returned by remote service
*/
public function &fetch_resource()
{
try {
$resource = Lom::with(array('Technical.TechnicalsLocation', 'General.GeneralsTitle', 'General.GeneralsDescription', 'General.GeneralsLanguage', 'General.GeneralsKeyword.generalskeywordtext', 'Educational.educationalsuserrole', 'Educational.EducationalsTypicalagerange', 'Educational.EducationalsContext', 'Metametadata', 'Educational.EducationalsType'))->where('loms.lom_id', '=', $this->_params['id'])->first();
if ($resource) {
$results = array('success' => true, 'message' => 'Resource metadata retrieved.', 'data' => $this->_make_resource($resource));
} else {
$results = array('success' => false, 'errcode' => 10, 'message' => 'API resource not found.');
}
} catch (\Exception $e) {
die($e->getMessage());
}
return $results;
}
/**
*
*/
private function retrieve_resource($id)
{
$l = Lom::find($id);
if (!is_object($l)) {
return;
}
/*------------------------------------------------------------------------------------------------
* GENERAL
*------------------------------------------------------------------------------------------------*/
// general identifiers
if (is_object($l->general)) {
}
foreach ($l->general->identifier as $identifier) {
$r['general']['identifier'][] = array('catalog' => $identifier->identifier_catalog, 'entry' => $identifier->identifier_entry);
}
// general title
foreach ($l->general->generalstitle as $text) {
$r['general']['title']['string'][] = array('@attributes' => array('language' => $text['generals_title_lang']), '@value' => $text['generals_title_string']);
}
// general language
foreach ($l->general->generalslanguage as $text) {
$r['general']['language'][] = array('@value' => $text->generals_language_lang);
}
// general description
foreach ($l->general->generalsdescription as $text) {
$r['general']['description']['string'][] = array('@attributes' => array('language' => $text['generals_description_lang']), '@value' => $text['generals_description_string']);
}
// general keyword
foreach ($l->general->generalskeyword as $keyword) {
$k = array();
foreach ($keyword->generalskeywordtext as $text) {
$k['string'][] = array('@attributes' => array('language' => $text['generals_keywords_text_lang']), '@value' => $text['generals_keywords_text_string']);
}
$r['general']['keyword'][] = $k;
}
// general coverage
foreach ($l->general->generalscoverage as $coverage) {
$k = array();
foreach ($coverage->generalscoveragestext as $text) {
$k['string'][] = array('@attributes' => array('language' => $text['generals_coverages_text_lang']), '@value' => $text['generals_coverages_text_string']);
}
$r['general']['coverage'][] = $k;
}
// general structure
$r['general']['structure'] = array('value' => $l->general->general_structure, 'source' => $l->general->general_structure_source);
// general aggregation level
$r['general']['aggregationLevel'] = array('value' => $l->general->general_aggregation_level, 'source' => $l->general->general_aggregation_level_source);
/*------------------------------------------------------------------------------------------------
* LIFECYCLE
*------------------------------------------------------------------------------------------------*/
// lifecycle version
if (isset($l->lifecycle->lifecycle_version_lang)) {
$k['string'] = array('@attributes' => array('language' => $l->lifecycle->lifecycle_version_lang), '@value' => $l->lifecycle->lifecycle_version);
$r['lifeCycle']['version'][] = @$k;
}
// lifecycle status
if (isset($l->lifecycle->lifecycle_status)) {
$r['lifeCycle']['status'] = @array('value' => $l->lifecycle->lifecycle_status, 'source' => $l->lifecycle->lifecycle_status_source);
}
// lifecycle contributes
foreach ($l->lifecycle->contribute as $contribute) {
$k = array();
$k['role'] = array('source' => $contribute->contribute_role_source, 'value' => $contribute->contribute_role);
$k['date'] = array('dateTime' => $contribute->contribute_date);
foreach ($contribute->contributesentity as $text) {
$k['entity'][] = array('@cdata' => $text['contributes_entity_string']);
}
$r['lifeCycle']['contribute'][] = $k;
}
/*------------------------------------------------------------------------------------------------
* METAMETADATA
*------------------------------------------------------------------------------------------------*/
// Metadata language
if (isset($l->metametadata->metametadata_lang)) {
$r['metaMetadata']['language'] = $l->metametadata->metametadata_lang;
}
// metametadata identifiers
foreach ($l->metametadata->identifier as $identifier) {
$r['metaMetadata']['identifier'][] = array('catalog' => $identifier->identifier_catalog, 'entry' => $identifier->identifier_entry);
}
// metametadata contributes
foreach ($l->metametadata->contribute as $contribute) {
$k = array();
$k['role'] = array('source' => $contribute->contribute_role_source, 'value' => $contribute->contribute_role);
$k['date'] = array('dateTime' => $contribute->contribute_date);
foreach ($contribute->contributesentity as $text) {
$k['entity'][] = array('@cdata' => $text['contributes_entity_string']);
}
$r['metaMetadata']['contribute'][] = $k;
}
// metametadata schemas
foreach ($l->metametadata->metametadatasschema as $schema) {
$r['metaMetadata']['metadataSchema'][] = $schema->metametadatas_schema_text;
}
/*------------------------------------------------------------------------------------------------
* TECHNICAL
*------------------------------------------------------------------------------------------------*/
foreach ($l->technical->technicalsformat as $format) {
$r['technical']['format'][] = array('@value' => $format->technicals_format_text);
}
foreach ($l->technical->technicalslocation as $location) {
$r['technical']['location'][] = array('@value' => $location->technicals_location_text);
}
if (isset($l->technical->technical_duration)) {
$r['technical']['duration']['duration'] = $l->technical->technical_duration;
}
if (isset($l->technical->technical_size)) {
$r['technical']['size'] = $l->technical->technical_size;
}
foreach ($l->technical->technicalsotherplatformrequirement as $requirement) {
$k = array();
$k['string'][] = array('@attributes' => array('language' => $requirement->technicals_otherplatformrequirement_lang), '@value' => $requirement->technicals_otherplatformrequirement_string);
$r['technical']['otherPlatformRequirements'][] = $k;
}
foreach ($l->technical->technicalsinstallationremark as $installation) {
$k = array();
$k['string'] = array('@attributes' => array('language' => $installation->technicals_installationremark_lang), '@value' => $installation->technicals_installationremark_string);
$r['technical']['installationRemark'][] = $k;
}
foreach ($l->technical->requirement as $requirement) {
$k = array();
foreach ($requirement->orcomposite as $or) {
$k['type'] = array('source' => $or['orcomposite_type_source'], 'value' => $or['orcomposite_type']);
$k['name'] = array('source' => $or['orcomposite_name_source'], 'value' => $or['orcomposite_name']);
$k['minimumVersion'] = $or['orcomposite_minimumversion'];
$k['maximumVersion'] = $or['orcomposite_maximumversion'];
$r['technical']['requirement']['orComposite'][] = $k;
}
}
/*------------------------------------------------------------------------------------------------
* EDUCATIONAL
*------------------------------------------------------------------------------------------------*/
foreach ($l->educational as $educational) {
$k = array();
if ($educational->educational_interactivitytype) {
$k['interactivityType']['source'] = $educational->educational_interactivitytype_source;
$k['interactivityType']['value'] = $educational->educational_interactivitytype;
}
if ($educational->educational_interactivitylevel) {
$k['interactivityLevel']['source'] = $educational->educational_interactivitylevel_source;
$k['interactivityLevel']['value'] = $educational->educational_interactivitylevel;
}
if ($educational->educational_difficulty) {
$k['difficulty']['source'] = $educational->educational_difficulty_source;
$k['difficulty']['value'] = $educational->educational_difficulty;
}
if ($educational->educational_semanticdensity) {
$k['semanticDensity']['source'] = $educational->educational_semanticdensity_source;
$k['semanticDensity']['value'] = $educational->educational_semanticdensity;
}
if ($educational->educational_typicallearningtime) {
$k['typicalLearningTime']['duration'] = $educational->educational_typicallearningtime;
}
foreach ($educational->educationalsuserrole as $e) {
$edu = array();
$edu['source'] = $e->educationals_userrole_source;
$edu['value'] = $e->educationals_userrole_string;
$k['intendedEndUserRole'][] = $edu;
}
foreach ($educational->educationalslanguage as $e) {
$edu = array();
$edu['@value'] = $e->educationals_language_string;
$k['language'][] = $edu;
}
foreach ($educational->educationalstype as $e) {
$edu = array();
$edu['source'] = $e->educationals_type_source;
$edu['value'] = $e->educationals_type_string;
$k['learningResourceType'][] = $edu;
}
foreach ($educational->educationalscontext as $e) {
$edu = array();
$edu['source'] = $e->educationals_context_source;
$edu['value'] = $e->educationals_context_string;
$k['context'][] = $edu;
}
foreach ($educational->educationalstypicalagerange as $e) {
$edu = array();
$edu['string']['@value'] = $e->educationals_typicalagerange_string;
$edu['string']['@attributes']['language'] = $e->educationals_typicalagerange_lang;
$k['typicalAgeRange'][] = $edu;
}
foreach ($educational->educationalsdescription as $e) {
$edu = array();
$edu['string']['@value'] = $e->educationals_description_string;
$edu['string']['@attributes']['language'] = $e->educationals_description_lang;
$k['description'][] = $edu;
}
$r['educational'][] = $k;
}
/*------------------------------------------------------------------------------------------------
* RIGHTS
*------------------------------------------------------------------------------------------------*/
if ($l->right->right_copyright) {
$r['rights']['copyrightAndOtherRestrictions'] = @array('source' => $l->right->right_copyright_source, 'value' => $l->right->right_copyright);
}
if ($l->right->right_cost) {
$r['rights']['cost'] = @array('source' => $l->right->right_cost_source, 'value' => $l->right->right_cost);
}
if ($l->right->right_description) {
$r['rights']['description']['string'][] = @array('@attributes' => array('language' => $l->right->right_description_lang), '@value' => $l->right->right_description);
}
/*------------------------------------------------------------------------------------------------
* RELATIONS
*------------------------------------------------------------------------------------------------*/
foreach ($l->relation as $relation) {
$k = array();
// Kind
$k['kind']['source'] = $relation->relation_kind_source;
$k['kind']['value'] = $relation->relation_kind;
// Description if exists
if (@$relation->resource->resource_description) {
$k['resource']['description']['string']['@value'] = @$relation->resource->resource_description;
$k['resource']['description']['string']['@attributes']['language'] = @$relation->resource->resource_description_lang;
}
// Identifiers
if (is_object($relation->resource)) {
foreach (@$relation->resource->identifier as $identifier) {
$k['resource']['identifier'][] = array('catalog' => $identifier->identifier_catalog, 'entry' => $identifier->identifier_entry);
}
}
$r['relation'][] = $k;
}
/*------------------------------------------------------------------------------------------------
* ANNOTATIONS
*------------------------------------------------------------------------------------------------*/
foreach ($l->annotation as $annotation) {
$k = array();
if ($annotation->annotation_entity) {
$k['entity']['@cdata'] = $annotation->annotation_entity;
}
if ($annotation->annotation_date) {
$k['date']['dateTime'] = $annotation->annotation_date;
}
$k['description']['string']['@value'] = $annotation->annotation_description;
$k['description']['string']['@attributes']['language'] = $annotation->annotation_description_lang;
$r['annotation'][] = $k;
}
/*------------------------------------------------------------------------------------------------
* CLASSIFICATION
*------------------------------------------------------------------------------------------------*/
foreach ($l->classification as $class) {
$k = array();
if ($class->classification_purpose) {
$k['purpose']['value'] = $class->classification_purpose;
if ($class->classification_purpose_source) {
$k['purpose']['source'] = $class->classification_purpose_source;
}
}
foreach ($class->taxonpath as $taxonp) {
$tp = array();
$tp['source']['string']['@value'] = @$taxonp->taxonpath_source;
if ($taxonp->taxonpath_source_lang) {
$tp['source']['string']['@attributes']['language'] = @$taxonp->taxonpath_source_lang;
}
foreach ($taxonp->taxon as $t) {
$tx = array();
$tp['taxon']['id'] = $t->taxon_id_string;
if ($t->taxon_entry) {
$tp['taxon']['entry']['string']['@value'] = @$t->taxon_entry;
if ($t->taxon_entry_lang) {
$tp['taxon']['entry']['string']['@attributes']['language'] = @$t->taxon_entry_lang;
}
}
}
$k['taxonPath'][] = $tp;
}
$r['classification'][] = $k;
}
/*------------------------------------------------------------------------------------------------
* PRINT XML
*------------------------------------------------------------------------------------------------*/
$xml = Array2XML::createXML('lom', $r);
echo $xml->saveXML();
//return $r;
}