mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-07-01 17:09:38 +02:00
3ee8f505b7
The main benefit of this is so that authors who make use of
.editorconfig don't end up with whitespace changes in their PRs.
Spaces vs. tabs has been left alone, although that could do with a
tidy-up in SS4 after the switch to PSR-1/2.
The command used was this:
for match in '*.ss' '*.css' '*.scss' '*.html' '*.yml' '*.php' '*.js' '*.csv' '*.inc' '*.php5'; do
find . -path ./thirdparty -not -prune -o -path ./admin/thirdparty -not -prune -o -type f -name "$match" -exec sed -E -i '' 's/[[:space:]]+$//' {} \+
find . -path ./thirdparty -not -prune -o -path ./admin/thirdparty -not -prune -o -type f -name "$match" | xargs perl -pi -e 's/ +$//'
done
423 lines
12 KiB
PHP
423 lines
12 KiB
PHP
<?php
|
|
|
|
/**
|
|
* Subclass of {@link DataList} representing a many_many relation.
|
|
*
|
|
* @package framework
|
|
* @subpackage model
|
|
*/
|
|
class ManyManyList extends RelationList {
|
|
|
|
/**
|
|
* @var string $joinTable
|
|
*/
|
|
protected $joinTable;
|
|
|
|
/**
|
|
* @var string $localKey
|
|
*/
|
|
protected $localKey;
|
|
|
|
/**
|
|
* @var string $foreignKey
|
|
*/
|
|
protected $foreignKey;
|
|
|
|
/**
|
|
* @var array $extraFields
|
|
*/
|
|
protected $extraFields;
|
|
|
|
/**
|
|
* @var array $_compositeExtraFields
|
|
*/
|
|
protected $_compositeExtraFields = array();
|
|
|
|
/**
|
|
* Create a new ManyManyList object.
|
|
*
|
|
* A ManyManyList object represents a list of {@link DataObject} records
|
|
* that correspond to a many-many relationship.
|
|
*
|
|
* Generation of the appropriate record set is left up to the caller, using
|
|
* the normal {@link DataList} methods. Addition arguments are used to
|
|
* support {@@link add()} and {@link remove()} methods.
|
|
*
|
|
* @param string $dataClass The class of the DataObjects that this will list.
|
|
* @param string $joinTable The name of the table whose entries define the content of this many_many relation.
|
|
* @param string $localKey The key in the join table that maps to the dataClass' PK.
|
|
* @param string $foreignKey The key in the join table that maps to joined class' PK.
|
|
* @param string $extraFields A map of field => fieldtype of extra fields on the join table.
|
|
*
|
|
* @example new ManyManyList('Group','Group_Members', 'GroupID', 'MemberID');
|
|
*/
|
|
public function __construct($dataClass, $joinTable, $localKey, $foreignKey, $extraFields = array()) {
|
|
parent::__construct($dataClass);
|
|
|
|
$this->joinTable = $joinTable;
|
|
$this->localKey = $localKey;
|
|
$this->foreignKey = $foreignKey;
|
|
$this->extraFields = $extraFields;
|
|
|
|
$this->linkJoinTable();
|
|
}
|
|
|
|
/**
|
|
* Setup the join between this dataobject and the necessary mapping table
|
|
*/
|
|
protected function linkJoinTable() {
|
|
// Join to the many-many join table
|
|
$baseClass = ClassInfo::baseDataClass($this->dataClass);
|
|
$this->dataQuery->innerJoin($this->joinTable, "\"{$this->joinTable}\".\"{$this->localKey}\" = \"{$baseClass}\".\"ID\"");
|
|
|
|
// Add the extra fields to the query
|
|
if($this->extraFields) {
|
|
$this->appendExtraFieldsToQuery();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Adds the many_many_extraFields to the select of the underlying
|
|
* {@link DataQuery}.
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function appendExtraFieldsToQuery() {
|
|
$finalized = array();
|
|
|
|
foreach($this->extraFields as $field => $spec) {
|
|
$obj = Object::create_from_string($spec);
|
|
|
|
if($obj instanceof CompositeDBField) {
|
|
$this->_compositeExtraFields[$field] = array();
|
|
|
|
// append the composite field names to the select
|
|
foreach($obj->compositeDatabaseFields() as $subField => $subSpec) {
|
|
$col = $field . $subField;
|
|
$finalized[] = $col;
|
|
|
|
// cache
|
|
$this->_compositeExtraFields[$field][] = $subField;
|
|
}
|
|
} else {
|
|
$finalized[] = $field;
|
|
}
|
|
}
|
|
|
|
$this->dataQuery->selectFromTable($this->joinTable, $finalized);
|
|
}
|
|
|
|
/**
|
|
* Create a DataObject from the given SQL row.
|
|
*
|
|
* @param array $row
|
|
* @return DataObject
|
|
*/
|
|
protected function createDataObject($row) {
|
|
// remove any composed fields
|
|
$add = array();
|
|
|
|
if($this->_compositeExtraFields) {
|
|
foreach($this->_compositeExtraFields as $fieldName => $composed) {
|
|
// convert joined extra fields into their composite field types.
|
|
$value = array();
|
|
|
|
foreach($composed as $subField => $subSpec) {
|
|
if(isset($row[$fieldName . $subSpec])) {
|
|
$value[$subSpec] = $row[$fieldName . $subSpec];
|
|
|
|
// don't duplicate data in the record
|
|
unset($row[$fieldName . $subSpec]);
|
|
}
|
|
}
|
|
|
|
$obj = Object::create_from_string($this->extraFields[$fieldName], $fieldName);
|
|
$obj->setValue($value, null, false);
|
|
|
|
$add[$fieldName] = $obj;
|
|
}
|
|
}
|
|
|
|
$dataObject = parent::createDataObject($row);
|
|
|
|
foreach($add as $fieldName => $obj) {
|
|
$dataObject->$fieldName = $obj;
|
|
}
|
|
|
|
return $dataObject;
|
|
}
|
|
|
|
/**
|
|
* Return a filter expression for when getting the contents of the
|
|
* relationship for some foreign ID
|
|
*
|
|
* @param int $id
|
|
*
|
|
* @return string
|
|
*/
|
|
protected function foreignIDFilter($id = null) {
|
|
if ($id === null) {
|
|
$id = $this->getForeignID();
|
|
}
|
|
|
|
// Apply relation filter
|
|
$key = "\"{$this->joinTable}\".\"{$this->foreignKey}\"";
|
|
if(is_array($id)) {
|
|
return array("$key IN (".DB::placeholders($id).")" => $id);
|
|
} else if($id !== null){
|
|
return array($key => $id);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return a filter expression for the join table when writing to the join table
|
|
*
|
|
* When writing (add, remove, removeByID), we need to filter the join table to just the relevant
|
|
* entries. However some subclasses of ManyManyList (Member_GroupSet) modify foreignIDFilter to
|
|
* include additional calculated entries, so we need different filters when reading and when writing
|
|
*
|
|
* @param array|integer $id (optional) An ID or an array of IDs - if not provided, will use the current ids
|
|
* as per getForeignID
|
|
* @return array Condition In array(SQL => parameters format)
|
|
*/
|
|
protected function foreignIDWriteFilter($id = null) {
|
|
return $this->foreignIDFilter($id);
|
|
}
|
|
|
|
/**
|
|
* Add an item to this many_many relationship
|
|
* Does so by adding an entry to the joinTable.
|
|
*
|
|
* @param mixed $item
|
|
* @param array $extraFields A map of additional columns to insert into the joinTable.
|
|
* Column names should be ANSI quoted.
|
|
*/
|
|
public function add($item, $extraFields = array()) {
|
|
// Ensure nulls or empty strings are correctly treated as empty arrays
|
|
if(empty($extraFields)) $extraFields = array();
|
|
|
|
// Determine ID of new record
|
|
if(is_numeric($item)) {
|
|
$itemID = $item;
|
|
} elseif($item instanceof $this->dataClass) {
|
|
$itemID = $item->ID;
|
|
} else {
|
|
throw new InvalidArgumentException("ManyManyList::add() expecting a $this->dataClass object, or ID value",
|
|
E_USER_ERROR);
|
|
}
|
|
|
|
// Validate foreignID
|
|
$foreignIDs = $this->getForeignID();
|
|
if(empty($foreignIDs)) {
|
|
throw new Exception("ManyManyList::add() can't be called until a foreign ID is set", E_USER_WARNING);
|
|
}
|
|
|
|
// Apply this item to each given foreign ID record
|
|
if(!is_array($foreignIDs)) $foreignIDs = array($foreignIDs);
|
|
foreach($foreignIDs as $foreignID) {
|
|
// Check for existing records for this item
|
|
if($foreignFilter = $this->foreignIDWriteFilter($foreignID)) {
|
|
// With the current query, simply add the foreign and local conditions
|
|
// The query can be a bit odd, especially if custom relation classes
|
|
// don't join expected tables (@see Member_GroupSet for example).
|
|
$query = new SQLQuery("*", "\"{$this->joinTable}\"");
|
|
$query->addWhere($foreignFilter);
|
|
$query->addWhere(array(
|
|
"\"{$this->joinTable}\".\"{$this->localKey}\"" => $itemID
|
|
));
|
|
$hasExisting = ($query->count() > 0);
|
|
} else {
|
|
$hasExisting = false;
|
|
}
|
|
|
|
// Blank manipulation
|
|
$manipulation = array(
|
|
$this->joinTable => array(
|
|
'command' => $hasExisting ? 'update' : 'insert',
|
|
'fields' => array()
|
|
)
|
|
);
|
|
if($hasExisting) {
|
|
$manipulation[$this->joinTable]['where'] = array(
|
|
"\"{$this->joinTable}\".\"{$this->foreignKey}\"" => $foreignID,
|
|
"\"{$this->joinTable}\".\"{$this->localKey}\"" => $itemID
|
|
);
|
|
}
|
|
|
|
if($extraFields && $this->extraFields) {
|
|
// Write extra field to manipluation in the same way
|
|
// that DataObject::prepareManipulationTable writes fields
|
|
foreach($this->extraFields as $fieldName => $fieldSpec) {
|
|
// Skip fields without an assignment
|
|
if(array_key_exists($fieldName, $extraFields)) {
|
|
$fieldObject = Object::create_from_string($fieldSpec, $fieldName);
|
|
$fieldObject->setValue($extraFields[$fieldName]);
|
|
$fieldObject->writeToManipulation($manipulation[$this->joinTable]);
|
|
}
|
|
}
|
|
}
|
|
|
|
$manipulation[$this->joinTable]['fields'][$this->localKey] = $itemID;
|
|
$manipulation[$this->joinTable]['fields'][$this->foreignKey] = $foreignID;
|
|
|
|
DB::manipulate($manipulation);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Remove the given item from this list.
|
|
*
|
|
* Note that for a ManyManyList, the item is never actually deleted, only
|
|
* the join table is affected.
|
|
*
|
|
* @param DataObject $item
|
|
*/
|
|
public function remove($item) {
|
|
if(!($item instanceof $this->dataClass)) {
|
|
throw new InvalidArgumentException("ManyManyList::remove() expecting a $this->dataClass object");
|
|
}
|
|
|
|
return $this->removeByID($item->ID);
|
|
}
|
|
|
|
/**
|
|
* Remove the given item from this list.
|
|
*
|
|
* Note that for a ManyManyList, the item is never actually deleted, only
|
|
* the join table is affected
|
|
*
|
|
* @param int $itemID The item ID
|
|
*/
|
|
public function removeByID($itemID) {
|
|
if(!is_numeric($itemID)) throw new InvalidArgumentException("ManyManyList::removeById() expecting an ID");
|
|
|
|
$query = new SQLDelete("\"{$this->joinTable}\"");
|
|
|
|
if($filter = $this->foreignIDWriteFilter($this->getForeignID())) {
|
|
$query->setWhere($filter);
|
|
} else {
|
|
user_error("Can't call ManyManyList::remove() until a foreign ID is set", E_USER_WARNING);
|
|
}
|
|
|
|
$query->addWhere(array("\"{$this->localKey}\"" => $itemID));
|
|
$query->execute();
|
|
}
|
|
|
|
/**
|
|
* Remove all items from this many-many join. To remove a subset of items,
|
|
* filter it first.
|
|
*
|
|
* @return void
|
|
*/
|
|
public function removeAll() {
|
|
$base = ClassInfo::baseDataClass($this->dataClass());
|
|
|
|
// Remove the join to the join table to avoid MySQL row locking issues.
|
|
$query = $this->dataQuery();
|
|
$foreignFilter = $query->getQueryParam('Foreign.Filter');
|
|
$query->removeFilterOn($foreignFilter);
|
|
|
|
$selectQuery = $query->query();
|
|
$selectQuery->setSelect("\"{$base}\".\"ID\"");
|
|
|
|
$from = $selectQuery->getFrom();
|
|
unset($from[$this->joinTable]);
|
|
$selectQuery->setFrom($from);
|
|
$selectQuery->setOrderBy(); // ORDER BY in subselects breaks MS SQL Server and is not necessary here
|
|
$selectQuery->setDistinct(false);
|
|
|
|
// Use a sub-query as SQLite does not support setting delete targets in
|
|
// joined queries.
|
|
$delete = new SQLDelete();
|
|
$delete->setFrom("\"{$this->joinTable}\"");
|
|
$delete->addWhere($this->foreignIDFilter());
|
|
$subSelect = $selectQuery->sql($parameters);
|
|
$delete->addWhere(array(
|
|
"\"{$this->joinTable}\".\"{$this->localKey}\" IN ($subSelect)" => $parameters
|
|
));
|
|
$delete->execute();
|
|
}
|
|
|
|
/**
|
|
* Find the extra field data for a single row of the relationship join
|
|
* table, given the known child ID.
|
|
*
|
|
* @param string $componentName The name of the component
|
|
* @param int $itemID The ID of the child for the relationship
|
|
*
|
|
* @return array Map of fieldName => fieldValue
|
|
*/
|
|
public function getExtraData($componentName, $itemID) {
|
|
$result = array();
|
|
|
|
// Skip if no extrafields or unsaved record
|
|
if(empty($this->extraFields) || empty($itemID)) {
|
|
return $result;
|
|
}
|
|
|
|
if(!is_numeric($itemID)) {
|
|
user_error('ComponentSet::getExtraData() passed a non-numeric child ID', E_USER_ERROR);
|
|
}
|
|
|
|
$cleanExtraFields = array();
|
|
foreach ($this->extraFields as $fieldName => $dbFieldSpec) {
|
|
$cleanExtraFields[] = "\"{$fieldName}\"";
|
|
}
|
|
$query = new SQLQuery($cleanExtraFields, "\"{$this->joinTable}\"");
|
|
$filter = $this->foreignIDWriteFilter($this->getForeignID());
|
|
if($filter) {
|
|
$query->setWhere($filter);
|
|
} else {
|
|
user_error("Can't call ManyManyList::getExtraData() until a foreign ID is set", E_USER_WARNING);
|
|
}
|
|
$query->addWhere(array(
|
|
"\"{$this->localKey}\"" => $itemID
|
|
));
|
|
$queryResult = $query->execute()->current();
|
|
if ($queryResult) {
|
|
foreach ($queryResult as $fieldName => $value) {
|
|
$result[$fieldName] = $value;
|
|
}
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Gets the join table used for the relationship.
|
|
*
|
|
* @return string the name of the table
|
|
*/
|
|
public function getJoinTable() {
|
|
return $this->joinTable;
|
|
}
|
|
|
|
/**
|
|
* Gets the key used to store the ID of the local/parent object.
|
|
*
|
|
* @return string the field name
|
|
*/
|
|
public function getLocalKey() {
|
|
return $this->localKey;
|
|
}
|
|
|
|
/**
|
|
* Gets the key used to store the ID of the foreign/child object.
|
|
*
|
|
* @return string the field name
|
|
*/
|
|
public function getForeignKey() {
|
|
return $this->foreignKey;
|
|
}
|
|
|
|
/**
|
|
* Gets the extra fields included in the relationship.
|
|
*
|
|
* @return array a map of field names to types
|
|
*/
|
|
public function getExtraFields() {
|
|
return $this->extraFields;
|
|
}
|
|
|
|
}
|