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<?php
/**
* IsisImporter: provides ISIS import methods for importing data into
* a Symfony project.
*/
class sfIsisImporter extends IsisConnector
{
/**
* Log dispatcher.
*
* @param string $message Log message
* @param string $level Log level
*/
public function log($message, $level = 'info')
{
$this->logger->log($message, $level);
}
/**
* Constructor.
*/
public function __construct($config = null) {
parent::__construct($config);
$this->stats = sfIsisImporterStats::getInstance();
// Get a logger instance.
$this->logger = sfIsisImporterLog::getInstance();
}
/**
* Guess a method name from a type.
*
* @param string $type Mapping type
* @return string Method name
*/
static function methodName($type)
{
return 'import'. ucfirst($type);
}
/**
* Get the model foreign table id.
*
* @param object $model Model
* @return string Model table id
*/
static function getModelId($model) {
return sfInflector::underscore(get_class($model)) .'_id';
}
/**
* Get the relation foreign table id.
*
* @param string $model Relation name
* @return string Relation table id
*/
static function getRelationId($relation) {
return sfInflector::underscore($relation) .'_id';
}
/**
* Get the model and relation tablename.
*
* @param object $model Model
* @param string $model Relation name
* @return string Relation table name
*/
static function getModelRelation($model, $relation)
{
return sfInflector::camelize(self::getModelName($model)) . sfInflector::camelize($relation);
}
/**
* Get the entity name from a subfield.
*
* @param string $subfield Subfield name
* @return string Genre name
*/
static function entityName($subfield)
{
return ucfirst($subfield);
}
/**
* Get the model name.
*
* @param object $model Model
* @return string Model name
*/
static function getModelName($model)
{
return get_class($model);
}
/**
* Add a single entry from the database.
*
* @param string $base_model Model to use
* @param int $entry Entry number
*/
public function addEntry($base_model, $entry)
{
// Get data and setup the model.
$this->read($entry);
$model = $this->newModel($base_model, $entry);
if ($model)
{
$this->log("Importing $base_model $entry...");
// Dispatch to custom import procedures.
foreach (new IsisMethodIterator($this) as $method => $field)
{
$this->{$method}($model, $field);
}
$model->save();
}
else {
$this->log("Skipping existing entry $entry for $base_model.");
}
}
/**
* Create a new model just if doesn't exist for a given entry. For that
* to work the entry must provide and id.
*
* @param string $base_model Model to use
* @param int $entry Entry number
* @return mixed New model or false
*/
public function newModel($base_model, $entry)
{
$model = new $base_model();
$id = $this->getBaseModelId($model);
if ($id)
{
if (!call_user_func(array($base_model, 'getById'), $id))
{
$this->setBaseModelId($model);
return $model;
}
else
{
return false;
}
}
return $model;
}
/**
* Set the primary key for the model by getting it or just saving it.
*
* @param object $model Base model
*/
public function setBaseModelId(&$model)
{
$model->id = $this->getBaseModelId($model);
$model->save();
}
/**
* Get the primary key for the base model.
*
* @param object $model Base model
* @return int Base model id
*/
public function getBaseModelId(&$model)
{
$method = get . $this->getModelName($model) .'PrimaryKey';
if (method_exists($this, $method))
{
return $this->{$method}($model);
}
}
/**
* Import a single field into a model.
*
* @param object $model Model
* @param array $field Field data from ISIS database schema
* @param int $row Row number
*/
public function addField(&$model, $field, $row = 0) {
$value = $this->filterBrackets($this->getMainItem($field, $row));
if ($value != null)
{
$map = $this->getMap($field);
$model->{$map}($value);
}
}
/**
* Import a single subfield into a model.
*
* @param object $model Model
* @param array $field Field data from ISIS database schema
* @param string $subfield Subfield name
* @param int $row Row number
*/
public function addSubfield(&$model, $field, $subfield, $row = 0) {
$value = $this->filterBrackets($this->getSubfield($field, $subfield, $row));
if ($value != null)
{
$map = $this->getMap($field, $subfield);
$model->{$map}($value);
}
}
/**
* Import single values into the model.
*
* Currently undefined mappings for a field/subfield
* are not saved as we would need to make sure a corresponding
* field exists in the model. This prevents the map
* configurations like $map = array('type' => 'value'); to work.
*
* As we are importing single values, here we don't care with
* row numbers as we assume that just the first row should be
* imported.
*
* @param object $model Model object
* @param array $field Field data
*/
public function importValues(&$model, array $field)
{
if ($this->fieldHasMap($field))
{
$this->addField($model, $field);
}
foreach ($this->getSubfieldList($field) as $subfield)
{
if ($this->subfieldHasMap($field, $subfield))
{
$this->addSubfield($model, $field, $subfield);
}
}
}
/**
* Get an existing entity.
*
* @param string $entity Entity name
* @param string $value Value to search for
* @param string $by Field to search $value
* @return mixed Entity data or false
*/
public function getEntity($entity, $value, $by = 'name')
{
$findby = 'findOneBy'. ucfirst($by);
$data = Doctrine_Core::getTable($entity)->{$findby}($value);
if (!$data)
{
return $data;
}
return false;
}
/**
* Add a new entity into the database if needed, returning
* the corresponding object.
*
* @param string $entity Entity name
* @param string $name Name value
* @return object Entity data
*/
public function addEntity($entity, $name)
{
$name = $this->entityName($name);
$data = $this->getEntity($entity, $name);
if (!$data)
{
$this->log("Adding new $entity $name.");
$data = new $entity();
$data->name = $name;
$data->save();
}
return $data;
}
/**
* Import one to one data.
*
* @param object $model Model
* @param array $field Field data from ISIS database schema
* @param string $relation Relation name
*/
public function addOneToOne(&$model, array $field, $relation)
{
foreach (new IsisRowIterator($this, $field) as $row)
{
$data = new $relation();
foreach ($this->getSubfieldList($field) as $subfield)
{
$this->addSubfield($data, $field, $subfield, $row);
}
$data->save();
$key = sfInflector::underscore($relation) .'_id';
$model->$key = $relation->id;
}
}
/**
* Import many to many data.
*
* @param object $model Model
* @param array $values Values to be added
* @param string $relation Relation name
*/
public function addManyToMany(&$model, array $values, $relation) {
$method = 'add'. $relation;
foreach ($values as $value)
{
// Populate related data.
if (is_callable(array($this, $method)))
{
$data = $this->{$method}($value);
}
else
{
$data = $this->addEntity($relation, $value);
}
// Get model and relation names and id fields.
$model_id = $this->getModelId($model);
$relation_id = $this->getRelationId($relation);
$model_relation = $this->getModelRelation($model, $relation);
// Make the relation.
$model_data = new $model_relation();
$model_data->{$model_id} = $model->id;
$model_data->{$relation_id} = $data->id;
$model_data->save();
}
}
/**
* Import one to one data.
*
* @param object $model Model
* @param string $relation Relation name
* @return object Relation model object
*/
public function addOneToMany(&$model, $relation)
{
$model_id = $this->getModelId($model);
$data = new $relation();
$data->{$model_id} = $model->id;
$data->save();
return $data;
}
/**
* Add simple entities data into the model.
*
* @param object $model Model
* @param array $field Field data from ISIS database schema
*/
public function addOneToManyEntities(&$model, array $field, $entity, $key = 'name')
{
foreach (new IsisMainItemIterator($this, $field) as $row => $value)
{
$this->log("Entity: $entity; Value: $value", 'debug');
$data = $this->addOneToMany($model, $entity);
$data->{$key} = $value;
$data->save();
}
}
/**
* Add field values in a many-to-many relation.
*
* @param object $model Model
* @param array $field Field data from ISIS database schema
* @param string $relation Relation name
*/
public function addManyToManyField(&$model, array $field, $relation)
{
foreach (new IsisMainItemIterator($this, $field) as $value)
{
$this->addManyToMany($model, $this->explodeBrackets($value), $relation);
}
}
/**
* Add an element into the database if needed, returning
* the resulting object.
*
* @param string $entity Entity name
* @param string $value Entity value
* @return object Entity data
*/
public function newOrExisting($entity, $value)
{
// Check for a null value.
if ($value == null)
{
$this->log("Null element value for $entity.", 'debug');
return;
}
// Get name.
$name = $this->parseName($value);
// Get existing element.
$element = call_user_func(array($entity, 'getByName'), $name);
// Create new element if needed.
if (!$element)
{
$this->log("Adding new $entity $value.");
$element = call_user_func(array($entity, 'addByName'), $name);
}
return $element;
}
}
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