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namespace Yajra\Oci8\Eloquent; |
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use Illuminate\Database\Eloquent\Builder; |
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use Illuminate\Database\Eloquent\Model; |
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use Illuminate\Database\Query\Builder as IlluminateQueryBuilder; |
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use Yajra\Oci8\Oci8Connection; |
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use Yajra\Oci8\Query\Grammars\OracleGrammar; |
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use Yajra\Oci8\Query\OracleBuilder as QueryBuilder; |
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class OracleEloquent extends Model |
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{ |
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/** |
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* List of binary (blob) columns. |
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* |
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* @var array |
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*/ |
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protected $binaries = []; |
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/** |
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* List of binary fields for storage. |
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* |
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* @var array |
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*/ |
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protected $binaryFields = []; |
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/** |
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* Sequence name variable |
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* |
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* @var string |
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*/ |
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protected $sequence = null; |
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/** |
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* Get model's sequence name |
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* |
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* @return string |
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*/ |
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public function getSequenceName() |
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{ |
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if ($this->sequence) { |
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return $this->sequence; |
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} |
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return $this->getTable() . '_' . $this->getKeyName() . '_seq'; |
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} |
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/** |
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* Set sequence name. |
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* |
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* @param string $name |
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* @return $this |
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*/ |
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public function setSequenceName($name) |
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{ |
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$this->sequence = $name; |
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return $this; |
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} |
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/** |
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* Update the model in the database. |
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* |
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* @param array $attributes |
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* @param array $options |
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* @return bool|int |
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*/ |
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public function update(array $attributes = [], array $options = []) |
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{ |
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if (! $this->exists) { |
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// If dirty attributes contains binary field |
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// extract binary fields to new array |
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if ($this->extractBinaries($dirty)) { |
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return $this->newQuery()->updateLob($attributes, $this->binaryFields, $this->getKeyName()); |
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} |
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return $this->newQuery()->update($attributes); |
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} |
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return $this->fill($attributes)->save(); |
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} |
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/** |
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* Extract binary fields from given attributes. |
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* |
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* @param array $attributes |
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* @return array |
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*/ |
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protected function extractBinaries(&$attributes) |
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{ |
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// If attributes contains binary field |
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// extract binary fields to new array |
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$binaries = []; |
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if ($this->checkBinary($attributes) and $this->getConnection() instanceof Oci8Connection) { |
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foreach ($attributes as $key => $value) { |
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if (in_array($key, $this->binaries)) { |
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$binaries[$key] = $value; |
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unset($attributes[$key]); |
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} |
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} |
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} |
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return $this->binaryFields = $binaries; |
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} |
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/** |
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* Check if attributes contains binary field. |
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* |
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* @param array $attributes |
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* @return boolean |
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*/ |
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protected function checkBinary(array $attributes) |
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{ |
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foreach ($attributes as $key => $value) { |
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// if attribute is in binary field list |
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if (in_array($key, $this->binaries)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Get the table qualified key name. |
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* |
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* @return string |
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*/ |
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public function getQualifiedKeyName() |
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{ |
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$pos = strpos($this->getTable(), '@'); |
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if ($pos === false) { |
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return $this->getTable() . '.' . $this->getKeyName(); |
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} else { |
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$table = substr($this->getTable(), 0, $pos); |
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$dbLink = substr($this->getTable(), $pos); |
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return $table . '.' . $this->getKeyName() . $dbLink; |
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} |
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} |
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/** |
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* Get a new query builder instance for the connection. |
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* |
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* @return \Illuminate\Database\Query\Builder|\Yajra\Oci8\Query\OracleBuilder |
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*/ |
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protected function newBaseQueryBuilder() |
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{ |
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$conn = $this->getConnection(); |
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$grammar = $conn->getQueryGrammar(); |
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if ($grammar instanceof OracleGrammar) { |
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return new QueryBuilder($conn, $grammar, $conn->getPostProcessor()); |
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} |
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return new IlluminateQueryBuilder($conn, $grammar, $conn->getPostProcessor()); |
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} |
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/** |
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* Perform a model update operation. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $query |
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* @param array $options |
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* @return boolean |
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*/ |
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protected function performUpdate(Builder $query, array $options = []) |
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{ |
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$dirty = $this->getDirty(); |
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if (count($dirty) > 0) { |
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// If the updating event returns false, we will cancel the update operation so |
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// developers can hook Validation systems into their models and cancel this |
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// operation if the model does not pass validation. Otherwise, we update. |
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if ($this->fireModelEvent('updating') === false) { |
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return false; |
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} |
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// First we need to create a fresh query instance and touch the creation and |
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// update timestamp on the model which are maintained by us for developer |
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// convenience. Then we will just continue saving the model instances. |
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if ($this->timestamps && array_get($options, 'timestamps', true)) { |
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$this->updateTimestamps(); |
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} |
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// Once we have run the update operation, we will fire the "updated" event for |
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// this model instance. This will allow developers to hook into these after |
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// models are updated, giving them a chance to do any special processing. |
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$dirty = $this->getDirty(); |
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if (count($dirty) > 0) { |
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// If dirty attributes contains binary field |
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// extract binary fields to new array |
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$this->updateBinary($query, $dirty, $options); |
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$this->fireModelEvent('updated', false); |
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} |
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} |
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return true; |
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} |
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/** |
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* Update model with binary (blob) fields. |
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* |
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* @param Builder $query |
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* @param array $dirty |
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* @param array $options |
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*/ |
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protected function updateBinary(Builder $query, $dirty, $options = []) |
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{ |
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if ($this->extractBinaries($dirty)) { |
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$this->setKeysForSaveQuery($query)->updateLob($dirty, $this->binaryFields, $this->getKeyName()); |
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} else { |
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$this->setKeysForSaveQuery($query)->update($dirty, $options); |
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} |
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} |
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/** |
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* Perform a model insert operation. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $query |
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* @param array $options |
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* @return bool |
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*/ |
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protected function performInsert(Builder $query, array $options = []) |
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{ |
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if ($this->fireModelEvent('creating') === false) { |
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return false; |
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} |
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// First we'll need to create a fresh query instance and touch the creation and |
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// update timestamps on this model, which are maintained by us for developer |
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// convenience. After, we will just continue saving these model instances. |
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if ($this->timestamps && array_get($options, 'timestamps', true)) { |
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$this->updateTimestamps(); |
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} |
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// If the model has an incrementing key, we can use the "insertGetId" method on |
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// the query builder, which will give us back the final inserted ID for this |
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// table from the database. Not all tables have to be incrementing though. |
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$attributes = $this->attributes; |
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if ($this->incrementing) { |
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$this->insertAndSetId($query, $attributes); |
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} |
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// If the table is not incrementing we'll simply insert this attributes as they |
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// are, as this attributes arrays must contain an "id" column already placed |
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// there by the developer as the manually determined key for these models. |
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else { |
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// If attributes contains binary field |
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// extract binary fields to new array |
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if ($this->extractBinaries($attributes)) { |
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$query->getQuery()->insertLob($attributes, $this->binaryFields, $this->getKeyName()); |
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} else { |
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$query->insert($attributes); |
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} |
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} |
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// We will go ahead and set the exists property to true, so that it is set when |
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// the created event is fired, just in case the developer tries to update it |
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// during the event. This will allow them to do so and run an update here. |
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$this->exists = true; |
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$this->wasRecentlyCreated = true; |
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$this->fireModelEvent('created', false); |
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return true; |
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} |
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/** |
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* Insert the given attributes and set the ID on the model. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $query |
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* @param array $attributes |
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* @return int|void |
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*/ |
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protected function insertAndSetId(Builder $query, $attributes) |
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{ |
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if ($binaries = $this->extractBinaries($attributes)) { |
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$id = $query->getQuery()->insertLob($attributes, $binaries, $keyName = $this->getKeyName()); |
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} else { |
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$id = $query->insertGetId($attributes, $keyName = $this->getKeyName()); |
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} |
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$this->setAttribute($keyName, $id); |
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} |
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} |
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PHP has two types of connecting operators (logical operators, and boolean operators):
and
&&
or
||
The difference between these is the order in which they are executed. In most cases, you would want to use a boolean operator like
&&
, or||
.Let’s take a look at a few examples:
Logical Operators are used for Control-Flow
One case where you explicitly want to use logical operators is for control-flow such as this:
Since
die
introduces problems of its own, f.e. it makes our code hardly testable, and prevents any kind of more sophisticated error handling; you probably do not want to use this in real-world code. Unfortunately, logical operators cannot be combined withthrow
at this point:These limitations lead to logical operators rarely being of use in current PHP code.