From 63601400e476c6cf43d985f3e7b9864681695ed4 Mon Sep 17 00:00:00 2001 From: Pierre Schmitz Date: Fri, 18 Jan 2013 16:46:04 +0100 Subject: Update to MediaWiki 1.20.2 this update includes: * adjusted Arch Linux skin * updated FluxBBAuthPlugin * patch for https://bugzilla.wikimedia.org/show_bug.cgi?id=44024 --- includes/db/ORMRow.php | 663 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 663 insertions(+) create mode 100644 includes/db/ORMRow.php (limited to 'includes/db/ORMRow.php') diff --git a/includes/db/ORMRow.php b/includes/db/ORMRow.php new file mode 100644 index 00000000..303f3a20 --- /dev/null +++ b/includes/db/ORMRow.php @@ -0,0 +1,663 @@ + + */ + +abstract class ORMRow implements IORMRow { + + /** + * The fields of the object. + * field name (w/o prefix) => value + * + * @since 1.20 + * @var array + */ + protected $fields = array( 'id' => null ); + + /** + * @since 1.20 + * @var ORMTable + */ + protected $table; + + /** + * If the object should update summaries of linked items when changed. + * For example, update the course_count field in universities when a course in courses is deleted. + * Settings this to false can prevent needless updating work in situations + * such as deleting a university, which will then delete all it's courses. + * + * @since 1.20 + * @var bool + */ + protected $updateSummaries = true; + + /** + * Indicates if the object is in summary mode. + * This mode indicates that only summary fields got updated, + * which allows for optimizations. + * + * @since 1.20 + * @var bool + */ + protected $inSummaryMode = false; + + /** + * Constructor. + * + * @since 1.20 + * + * @param IORMTable $table + * @param array|null $fields + * @param boolean $loadDefaults + */ + public function __construct( IORMTable $table, $fields = null, $loadDefaults = false ) { + $this->table = $table; + + if ( !is_array( $fields ) ) { + $fields = array(); + } + + if ( $loadDefaults ) { + $fields = array_merge( $this->table->getDefaults(), $fields ); + } + + $this->setFields( $fields ); + } + + /** + * Load the specified fields from the database. + * + * @since 1.20 + * + * @param array|null $fields + * @param boolean $override + * @param boolean $skipLoaded + * + * @return bool Success indicator + */ + public function loadFields( $fields = null, $override = true, $skipLoaded = false ) { + if ( is_null( $this->getId() ) ) { + return false; + } + + if ( is_null( $fields ) ) { + $fields = array_keys( $this->table->getFields() ); + } + + if ( $skipLoaded ) { + $fields = array_diff( $fields, array_keys( $this->fields ) ); + } + + if ( !empty( $fields ) ) { + $result = $this->table->rawSelectRow( + $this->table->getPrefixedFields( $fields ), + array( $this->table->getPrefixedField( 'id' ) => $this->getId() ), + array( 'LIMIT' => 1 ) + ); + + if ( $result !== false ) { + $this->setFields( $this->table->getFieldsFromDBResult( $result ), $override ); + return true; + } + return false; + } + + return true; + } + + /** + * Gets the value of a field. + * + * @since 1.20 + * + * @param string $name + * @param mixed $default + * + * @throws MWException + * @return mixed + */ + public function getField( $name, $default = null ) { + if ( $this->hasField( $name ) ) { + return $this->fields[$name]; + } elseif ( !is_null( $default ) ) { + return $default; + } else { + throw new MWException( 'Attempted to get not-set field ' . $name ); + } + } + + /** + * Gets the value of a field but first loads it if not done so already. + * + * @since 1.20 + * + * @param string$name + * + * @return mixed + */ + public function loadAndGetField( $name ) { + if ( !$this->hasField( $name ) ) { + $this->loadFields( array( $name ) ); + } + + return $this->getField( $name ); + } + + /** + * Remove a field. + * + * @since 1.20 + * + * @param string $name + */ + public function removeField( $name ) { + unset( $this->fields[$name] ); + } + + /** + * Returns the objects database id. + * + * @since 1.20 + * + * @return integer|null + */ + public function getId() { + return $this->getField( 'id' ); + } + + /** + * Sets the objects database id. + * + * @since 1.20 + * + * @param integer|null $id + */ + public function setId( $id ) { + $this->setField( 'id', $id ); + } + + /** + * Gets if a certain field is set. + * + * @since 1.20 + * + * @param string $name + * + * @return boolean + */ + public function hasField( $name ) { + return array_key_exists( $name, $this->fields ); + } + + /** + * Gets if the id field is set. + * + * @since 1.20 + * + * @return boolean + */ + public function hasIdField() { + return $this->hasField( 'id' ) + && !is_null( $this->getField( 'id' ) ); + } + + /** + * Sets multiple fields. + * + * @since 1.20 + * + * @param array $fields The fields to set + * @param boolean $override Override already set fields with the provided values? + */ + public function setFields( array $fields, $override = true ) { + foreach ( $fields as $name => $value ) { + if ( $override || !$this->hasField( $name ) ) { + $this->setField( $name, $value ); + } + } + } + + /** + * Gets the fields => values to write to the table. + * + * @since 1.20 + * + * @return array + */ + protected function getWriteValues() { + $values = array(); + + foreach ( $this->table->getFields() as $name => $type ) { + if ( array_key_exists( $name, $this->fields ) ) { + $value = $this->fields[$name]; + + switch ( $type ) { + case 'array': + $value = (array)$value; + case 'blob': + $value = serialize( $value ); + } + + $values[$this->table->getPrefixedField( $name )] = $value; + } + } + + return $values; + } + + /** + * Serializes the object to an associative array which + * can then easily be converted into JSON or similar. + * + * @since 1.20 + * + * @param null|array $fields + * @param boolean $incNullId + * + * @return array + */ + public function toArray( $fields = null, $incNullId = false ) { + $data = array(); + $setFields = array(); + + if ( !is_array( $fields ) ) { + $setFields = $this->getSetFieldNames(); + } else { + foreach ( $fields as $field ) { + if ( $this->hasField( $field ) ) { + $setFields[] = $field; + } + } + } + + foreach ( $setFields as $field ) { + if ( $incNullId || $field != 'id' || $this->hasIdField() ) { + $data[$field] = $this->getField( $field ); + } + } + + return $data; + } + + /** + * Load the default values, via getDefaults. + * + * @since 1.20 + * + * @param boolean $override + */ + public function loadDefaults( $override = true ) { + $this->setFields( $this->table->getDefaults(), $override ); + } + + /** + * Writes the answer to the database, either updating it + * when it already exists, or inserting it when it doesn't. + * + * @since 1.20 + * + * @param string|null $functionName + * + * @return boolean Success indicator + */ + public function save( $functionName = null ) { + if ( $this->hasIdField() ) { + return $this->saveExisting( $functionName ); + } else { + return $this->insert( $functionName ); + } + } + + /** + * Updates the object in the database. + * + * @since 1.20 + * + * @param string|null $functionName + * + * @return boolean Success indicator + */ + protected function saveExisting( $functionName = null ) { + $dbw = wfGetDB( DB_MASTER ); + + $success = $dbw->update( + $this->table->getName(), + $this->getWriteValues(), + $this->table->getPrefixedValues( $this->getUpdateConditions() ), + is_null( $functionName ) ? __METHOD__ : $functionName + ); + + // DatabaseBase::update does not always return true for success as documented... + return $success !== false; + } + + /** + * Returns the WHERE considtions needed to identify this object so + * it can be updated. + * + * @since 1.20 + * + * @return array + */ + protected function getUpdateConditions() { + return array( 'id' => $this->getId() ); + } + + /** + * Inserts the object into the database. + * + * @since 1.20 + * + * @param string|null $functionName + * @param array|null $options + * + * @return boolean Success indicator + */ + protected function insert( $functionName = null, array $options = null ) { + $dbw = wfGetDB( DB_MASTER ); + + $success = $dbw->insert( + $this->table->getName(), + $this->getWriteValues(), + is_null( $functionName ) ? __METHOD__ : $functionName, + is_null( $options ) ? array( 'IGNORE' ) : $options + ); + + // DatabaseBase::insert does not always return true for success as documented... + $success = $success !== false; + + if ( $success ) { + $this->setField( 'id', $dbw->insertId() ); + } + + return $success; + } + + /** + * Removes the object from the database. + * + * @since 1.20 + * + * @return boolean Success indicator + */ + public function remove() { + $this->beforeRemove(); + + $success = $this->table->delete( array( 'id' => $this->getId() ) ); + + // DatabaseBase::delete does not always return true for success as documented... + $success = $success !== false; + + if ( $success ) { + $this->onRemoved(); + } + + return $success; + } + + /** + * Gets called before an object is removed from the database. + * + * @since 1.20 + */ + protected function beforeRemove() { + $this->loadFields( $this->getBeforeRemoveFields(), false, true ); + } + + /** + * Before removal of an object happens, @see beforeRemove gets called. + * This method loads the fields of which the names have been returned by this one (or all fields if null is returned). + * This allows for loading info needed after removal to get rid of linked data and the like. + * + * @since 1.20 + * + * @return array|null + */ + protected function getBeforeRemoveFields() { + return array(); + } + + /** + * Gets called after successfull removal. + * Can be overriden to get rid of linked data. + * + * @since 1.20 + */ + protected function onRemoved() { + $this->setField( 'id', null ); + } + + /** + * Return the names and values of the fields. + * + * @since 1.20 + * + * @return array + */ + public function getFields() { + return $this->fields; + } + + /** + * Return the names of the fields. + * + * @since 1.20 + * + * @return array + */ + public function getSetFieldNames() { + return array_keys( $this->fields ); + } + + /** + * Sets the value of a field. + * Strings can be provided for other types, + * so this method can be called from unserialization handlers. + * + * @since 1.20 + * + * @param string $name + * @param mixed $value + * + * @throws MWException + */ + public function setField( $name, $value ) { + $fields = $this->table->getFields(); + + if ( array_key_exists( $name, $fields ) ) { + switch ( $fields[$name] ) { + case 'int': + $value = (int)$value; + break; + case 'float': + $value = (float)$value; + break; + case 'bool': + if ( is_string( $value ) ) { + $value = $value !== '0'; + } elseif ( is_int( $value ) ) { + $value = $value !== 0; + } + break; + case 'array': + if ( is_string( $value ) ) { + $value = unserialize( $value ); + } + + if ( !is_array( $value ) ) { + $value = array(); + } + break; + case 'blob': + if ( is_string( $value ) ) { + $value = unserialize( $value ); + } + break; + case 'id': + if ( is_string( $value ) ) { + $value = (int)$value; + } + break; + } + + $this->fields[$name] = $value; + } else { + throw new MWException( 'Attempted to set unknown field ' . $name ); + } + } + + /** + * Add an amount (can be negative) to the specified field (needs to be numeric). + * TODO: most off this stuff makes more sense in the table class + * + * @since 1.20 + * + * @param string $field + * @param integer $amount + * + * @return boolean Success indicator + */ + public function addToField( $field, $amount ) { + if ( $amount == 0 ) { + return true; + } + + if ( !$this->hasIdField() ) { + return false; + } + + $absoluteAmount = abs( $amount ); + $isNegative = $amount < 0; + + $dbw = wfGetDB( DB_MASTER ); + + $fullField = $this->table->getPrefixedField( $field ); + + $success = $dbw->update( + $this->table->getName(), + array( "$fullField=$fullField" . ( $isNegative ? '-' : '+' ) . $absoluteAmount ), + array( $this->table->getPrefixedField( 'id' ) => $this->getId() ), + __METHOD__ + ); + + if ( $success && $this->hasField( $field ) ) { + $this->setField( $field, $this->getField( $field ) + $amount ); + } + + return $success; + } + + /** + * Return the names of the fields. + * + * @since 1.20 + * + * @return array + */ + public function getFieldNames() { + return array_keys( $this->table->getFields() ); + } + + /** + * Computes and updates the values of the summary fields. + * + * @since 1.20 + * + * @param array|string|null $summaryFields + */ + public function loadSummaryFields( $summaryFields = null ) { + + } + + /** + * Sets the value for the @see $updateSummaries field. + * + * @since 1.20 + * + * @param boolean $update + */ + public function setUpdateSummaries( $update ) { + $this->updateSummaries = $update; + } + + /** + * Sets the value for the @see $inSummaryMode field. + * + * @since 1.20 + * + * @param boolean $summaryMode + */ + public function setSummaryMode( $summaryMode ) { + $this->inSummaryMode = $summaryMode; + } + + /** + * Return if any fields got changed. + * + * @since 1.20 + * + * @param IORMRow $object + * @param boolean|array $excludeSummaryFields + * When set to true, summary field changes are ignored. + * Can also be an array of fields to ignore. + * + * @return boolean + */ + protected function fieldsChanged( IORMRow $object, $excludeSummaryFields = false ) { + $exclusionFields = array(); + + if ( $excludeSummaryFields !== false ) { + $exclusionFields = is_array( $excludeSummaryFields ) ? $excludeSummaryFields : $this->table->getSummaryFields(); + } + + foreach ( $this->fields as $name => $value ) { + $excluded = $excludeSummaryFields && in_array( $name, $exclusionFields ); + + if ( !$excluded && $object->getField( $name ) !== $value ) { + return true; + } + } + + return false; + } + + /** + * Returns the table this IORMRow is a row in. + * + * @since 1.20 + * + * @return IORMTable + */ + public function getTable() { + return $this->table; + } + +} -- cgit v1.2.2