/**
* Checks whether the provided foreign key represents the same definition as this foreign key
* @return boolean True if the 2 are the same, false otherwise
*/
public function equals(ForeignKey $foreignKey)
{
if ($this->name != $foreignKey->getName()) {
return false;
}
if ($this->fieldName != $foreignKey->getFieldName()) {
return false;
}
if ($this->referenceTableName != $foreignKey->getReferenceTableName()) {
return false;
}
if ($this->referenceFieldName != $foreignKey->getReferenceFieldName()) {
return false;
}
return true;
}
/**
* Adds a foreign key to the table
* @param ForeignKey $foreignKey Definition of the foreign key to add
* @throws zibo\library\database\exception\DatabaseException when the index is already set to this table
*/
public function setForeignKey(ForeignKey $foreignKey)
{
$fieldName = $foreignKey->getFieldName();
if (!$this->hasField($fieldName)) {
throw new DatabaseException('Could not add the foreign key: The field is not set in this table');
}
$this->foreignKeys[$fieldName] = $foreignKey;
}