public function testConstruct()
{
$field = new FieldExpression('field');
$this->assertEquals('field', $field->getName());
$this->assertNull($field->getTable());
$this->assertNull($field->getAlias());
}
/**
* Get the quoted name of the given field, ready to query
* @param Field field field to get the quoted query name of
* @param boolean useAlias true to use the field's alias if set, false otherwise (default: true)
* @return string quoted name of the field
*/
protected function parseFieldExpression(FieldExpression $field, $useAlias = true)
{
$alias = $field->getAlias();
if ($alias && $useAlias) {
return $this->connection->quoteIdentifier($alias);
}
$name = $this->connection->quoteIdentifier($field->getName());
$table = $field->getTable();
if ($table) {
$name = $this->parseTableExpression($table, true) . '.' . $name;
}
return $name;
}
/**
* Processes the relations and localization of a field expression
* @param zibo\library\database\manipulation\expression\FieldExpression $expression Field expression to process
* @param boolean $inCondition Flag to see whether the provided expression is used in a condition or not
* @return zibo\library\database\manipulation\expression\FieldExpression Processed expression
*/
private function processFieldExpression(FieldExpression $expression, $inCondition = false)
{
$name = $expression->getName();
$table = $expression->getTable();
if (!$table && isset($this->fields[$name])) {
return $this->fields[$name];
}
if (!$table || $table->getName() == $this->meta->getName() || $table->getName() == self::ALIAS_SELF) {
return $this->processModelFieldExpression($name, $table, $inCondition);
}
return $this->processRelationFieldExpression($name, $table, $inCondition);
}