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tags/2.0.0-beta
Qiang Xue 14 years ago
parent
50743935d3
commit
62336b43b7
4 changed files with 270 additions and 113 deletions
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  1. 219
      framework/db/ar/ActiveFinder.php
  2. 10
      framework/db/ar/ActiveQuery.php
  3. 18
      framework/db/ar/ActiveRecord.php
  4. 136
      framework/db/ar/JoinElement.php

219
framework/db/ar/ActiveFinder.php
Unescape View File

@ -31,7 +31,6 @@ use yii\db\Exception;
* todo: lazy loading * todo: lazy loading
* todo: scope * todo: scope
* todo: test via option * todo: test via option
* todo: count, sum, exists
todo: inner join with one or multiple relations as filters todo: inner join with one or multiple relations as filters
joinType should default to inner join in this case joinType should default to inner join in this case
* *
@ -61,7 +60,7 @@ class ActiveFinder extends \yii\base\Object
* @param bool $all * @param bool $all
* @return array * @return array
*/ */
public function findRecords($query, $all = true) public function findRecords($query)
{ {
if ($query->sql !== null) { if ($query->sql !== null) {
$sql = $query->sql; $sql = $query->sql;
@ -81,16 +80,7 @@ class ActiveFinder extends \yii\base\Object
} }
$command = $this->connection->createCommand($sql, $query->params); $command = $this->connection->createCommand($sql, $query->params);
if ($all) { $rows = $command->queryAll();
$rows = $command->queryAll();
} else {
$row = $command->queryRow();
if ($row === false) {
return array();
}
$rows = array($row);
}
$records = array(); $records = array();
if ($query->asArray) { if ($query->asArray) {
if ($query->indexBy === null) { if ($query->indexBy === null) {
@ -120,20 +110,18 @@ class ActiveFinder extends \yii\base\Object
} }
public function findRecordsWithRelations() public function findRecordsWithRelations($query)
{ {
if (!empty($this->with)) { // todo: handle findBySql() and limit cases
// todo: handle findBySql() and limit cases $joinTree = $this->buildRelationalQuery();
$joinTree = $this->buildRelationalQuery();
}
if ($this->sql === null) { if ($this->sql === null) {
$this->initFrom($this->query); $this->initFrom($element->query);
$command = $this->query->createCommand($this->getDbConnection()); $command = $element->query->createCommand($this->getDbConnection());
$this->sql = $command->getSql(); $this->sql = $command->getSql();
} else { } else {
$command = $this->getDbConnection()->createCommand($this->sql); $command = $this->getDbConnection()->createCommand($this->sql);
$command->bindValues($this->query->params); $command->bindValues($element->query->params);
} }
$rows = $command->queryAll(); $rows = $command->queryAll();
@ -204,43 +192,49 @@ class ActiveFinder extends \yii\base\Object
} }
} }
protected function buildRelationalQuery() private $_joinCount;
private $_tableAliases;
protected function buildQuery()
{ {
$joinTree = new JoinElement($this, null, null); $this->_joinCount = 0;
$this->buildJoinTree($joinTree, $this->with); $joinTree = new JoinElement($this->_joinCount++, $element->query, null, null);
$this->buildJoinTree($joinTree, $element->query->with);
$this->_tableAliases = array();
$this->buildTableAlias($joinTree); $this->buildTableAlias($joinTree);
$query = new Query; $query = new Query;
foreach ($joinTree->children as $child) { foreach ($joinTree->children as $child) {
$child->buildQuery($query); $child->buildQuery($query);
} }
$select = $joinTree->buildSelect($this->query->select); $select = $joinTree->buildSelect($element, $element->query->select);
if (!empty($query->select)) { if (!empty($query->select)) {
$this->query->select = array_merge($select, $query->select); $element->query->select = array_merge($select, $query->select);
} else { } else {
$this->query->select = $select; $element->query->select = $select;
} }
if (!empty($query->where)) { if (!empty($query->where)) {
$this->query->andWhere('(' . implode(') AND (', $query->where) . ')'); $element->query->andWhere('(' . implode(') AND (', $query->where) . ')');
} }
if (!empty($query->having)) { if (!empty($query->having)) {
$this->query->andHaving('(' . implode(') AND (', $query->having) . ')'); $element->query->andHaving('(' . implode(') AND (', $query->having) . ')');
} }
if (!empty($query->join)) { if (!empty($query->join)) {
if ($this->query->join === null) { if ($element->query->join === null) {
$this->query->join = $query->join; $element->query->join = $query->join;
} else { } else {
$this->query->join = array_merge($this->query->join, $query->join); $element->query->join = array_merge($element->query->join, $query->join);
} }
} }
if (!empty($query->orderBy)) { if (!empty($query->orderBy)) {
$this->query->addOrderBy($query->orderBy); $element->query->addOrderBy($query->orderBy);
} }
if (!empty($query->groupBy)) { if (!empty($query->groupBy)) {
$this->query->addGroupBy($query->groupBy); $element->query->addGroupBy($query->groupBy);
} }
if (!empty($query->params)) { if (!empty($query->params)) {
$this->query->addParams($query->params); $element->query->addParams($query->params);
} }
return $joinTree; return $joinTree;
@ -257,10 +251,10 @@ class ActiveFinder extends \yii\base\Object
{ {
if (is_array($with)) { if (is_array($with)) {
foreach ($with as $name => $value) { foreach ($with as $name => $value) {
if (is_string($value)) { if (is_array($value)) {
$this->buildJoinTree($parent, $value);
} elseif (is_string($name) && is_array($value)) {
$this->buildJoinTree($parent, $name, $value); $this->buildJoinTree($parent, $name, $value);
} else {
$this->buildJoinTree($parent, $value);
} }
} }
return null; return null;
@ -275,38 +269,173 @@ class ActiveFinder extends \yii\base\Object
$child = $parent->children[$with]; $child = $parent->children[$with];
$child->joinOnly = false; $child->joinOnly = false;
} else { } else {
$modelClass = $parent->relation->modelClass; $modelClass = $parent->query->modelClass;
$relations = $modelClass::getMetaData()->relations; $relations = $modelClass::getMetaData()->relations;
if (!isset($relations[$with])) { if (!isset($relations[$with])) {
throw new Exception("$modelClass has no relation named '$with'."); throw new Exception("$modelClass has no relation named '$with'.");
} }
$relation = clone $relations[$with]; $relation = clone $relations[$with];
if ($relation->via !== null && isset($relations[$relation->via])) { if ($relation->via !== null && isset($relations[$relation->via])) {
$relation->via = null;
$parent2 = $this->buildJoinTree($parent, $relation->via); $parent2 = $this->buildJoinTree($parent, $relation->via);
$relation->via = null;
if ($parent2->joinOnly === null) { if ($parent2->joinOnly === null) {
$parent2->joinOnly = true; $parent2->joinOnly = true;
} }
$child = new JoinElement($relation, $parent2, $parent); $child = new JoinElement($this->_joinCount++, $relation, $parent2, $parent);
} else { } else {
$child = new JoinElement($relation, $parent, $parent); $child = new JoinElement($this->_joinCount++, $relation, $parent, $parent);
} }
} }
foreach ($config as $name => $value) { foreach ($config as $name => $value) {
$child->relation->$name = $value; $child->query->$name = $value;
} }
return $child; return $child;
} }
protected function buildTableAlias($element, &$count = 0) /**
* @param JoinElement $element
*/
protected function buildTableAlias($element)
{ {
if ($element->relation->tableAlias === null) { if ($element->query->tableAlias !== null) {
$element->relation->tableAlias = 't' . ($count++); $alias = $element->query->tableAlias;
} elseif ($element->query instanceof ActiveRelation) {
$alias = $element->query->name;
} else {
$alias = 't';
} }
$count = 0;
while (isset($this->_tableAliases[$alias])) {
$alias = 't' . $count++;
}
$this->_tableAliases[$alias] = true;
$element->query->tableAlias = $alias;
foreach ($element->children as $child) { foreach ($element->children as $child) {
$this->buildTableAlias($child, $count); $this->buildTableAlias($child, $count);
} }
} }
/**
* @param JoinElement $element
* @param Query $query
*/
protected function buildJoinQuery($element, $query)
{
$prefixes = array(
'@.' => $element->query->tableAlias . '.',
'?.' => $element->parent->query->tableAlias . '.',
);
$quotedPrefixes = array(
'@.' => $this->connection->quoteTableName($element->query->tableAlias, true) . '.',
'?.' => $this->connection->quoteTableName($element->parent->query->tableAlias, true) . '.',
);
foreach ($this->buildSelect($element, $element->query->select) as $column) {
$query->select[] = strtr($column, $prefixes);
}
if ($element->query->where !== null) {
$query->where[] = strtr($element->query->where, $quotedPrefixes);
}
if ($element->query->having !== null) {
$query->having[] = strtr($element->query->having, $quotedPrefixes);
}
if ($element->query->via !== null) {
$query->join[] = strtr($element->query->via, $quotedPrefixes);
}
if ($element->query->joinType === null) {
$joinType = $element->query->select === false ? 'INNER JOIN' : 'LEFT JOIN';
} else {
$joinType = $element->query->joinType;
}
$modelClass = $element->query->modelClass;
$tableName = $this->connection->quoteTableName($modelClass::tableName());
$tableAlias = $this->connection->quoteTableName($element->query->tableAlias);
$join = "$joinType $tableName $tableAlias";
if ($element->query->on !== null) {
$join .= ' ON ' . strtr($element->query->on, $quotedPrefixes);
}
$query->join[] = $join;
if ($element->query->join !== null) {
$query->join[] = strtr($element->query->join, $quotedPrefixes);
}
if ($element->query->orderBy !== null) {
if (!is_array($element->query->orderBy)) {
$element->query->orderBy = preg_split('/\s*,\s*/', trim($element->query->orderBy), -1, PREG_SPLIT_NO_EMPTY);
}
foreach ($element->query->orderBy as $orderBy) {
$query->orderBy[] = strtr($orderBy, $prefixes);
}
}
if ($element->query->groupBy !== null) {
if (!is_array($element->query->groupBy)) {
$element->query->groupBy = preg_split('/\s*,\s*/', trim($element->query->groupBy), -1, PREG_SPLIT_NO_EMPTY);
}
foreach ($element->query->groupBy as $groupBy) {
$query->groupBy[] = strtr($groupBy, $prefixes);
}
}
if ($element->query->params !== null) {
$query->addParams($element->query->params);
}
foreach ($element->children as $child) {
$this->buildQuery($child, $query);
}
}
protected function buildSelect($element, $select)
{
if ($select === false) {
return array();
}
$modelClass = $element->query->modelClass;
$table = $modelClass::getMetaData()->table;
$columns = array();
$columnCount = 0;
$prefix = $element->query->tableAlias;
if (empty($select) || $select === '*') {
foreach ($table->columns as $column) {
$alias = "t{$element->id}c" . ($columnCount++);
$columns[] = "$prefix.{$column->name} AS $alias";
$element->columnAliases[$alias] = $column->name;
if ($column->isPrimaryKey) {
$element->pkAlias[$column->name] = $alias;
}
}
} else {
if (is_string($select)) {
$select = explode(',', $select);
}
foreach ($table->primaryKey as $column) {
$alias = "t{$element->id}c" . ($columnCount++);
$columns[] = "$prefix.$column AS $alias";
$element->pkAlias[$column] = $alias;
}
foreach ($select as $column) {
$column = trim($column);
if (preg_match('/^(.*?)\s+AS\s+(\w+)$/im', $column, $matches)) {
// if the column is already aliased
$element->columnAliases[$matches[2]] = $matches[2];
$columns[] = $column;
} elseif (!isset($element->pkAlias[$column])) {
$alias = "t{$element->id}c" . ($columnCount++);
$columns[] = "$prefix.$column AS $alias";
$element->columnAliases[$alias] = $column;
}
}
}
return $columns;
}
} }

10
framework/db/ar/ActiveQuery.php
Unescape View File

@ -91,8 +91,8 @@ class ActiveQuery extends BaseActiveQuery implements \IteratorAggregate, \ArrayA
public function one() public function one()
{ {
if ($this->records === null) { if ($this->records === null) {
// todo: load only one record $this->limit = 1;
$this->records = $this->findRecords(false); $this->records = $this->findRecords();
} }
return isset($this->records[0]) ? $this->records[0] : null; return isset($this->records[0]) ? $this->records[0] : null;
} }
@ -240,13 +240,13 @@ class ActiveQuery extends BaseActiveQuery implements \IteratorAggregate, \ArrayA
unset($this->records[$offset]); unset($this->records[$offset]);
} }
protected function findRecords($all = true) protected function findRecords()
{ {
$finder = new ActiveFinder($this->getDbConnection()); $finder = new ActiveFinder($this->getDbConnection());
if (!empty($this->with)) { if (!empty($this->with)) {
return $finder->findRecordsWithRelations(); return $finder->findRecordsWithRelations($this);
} else { } else {
return $finder->findRecords($this, $all); return $finder->findRecords($this);
} }
} }
} }

18
framework/db/ar/ActiveRecord.php
Unescape View File

@ -517,10 +517,18 @@ abstract class ActiveRecord extends Model
$this->_related[$relation->name] = $relation->hasMany ? array() : null; $this->_related[$relation->name] = $relation->hasMany ? array() : null;
} }
/**
* @param ActiveRelation $relation
* @param ActiveRecord $record
*/
public function addRelatedRecord($relation, $record) public function addRelatedRecord($relation, $record)
{ {
if ($relation->hasMany) { if ($relation->hasMany) {
$this->_related[$relation->name][] = $record; if ($relation->indexBy !== null) {
$this->_related[$relation->name][$record->{$relation->indexBy}] = $record;
} else {
$this->_related[$relation->name][] = $record;
}
} else { } else {
$this->_related[$relation->name] = $record; $this->_related[$relation->name] = $record;
} }
@ -1027,12 +1035,10 @@ abstract class ActiveRecord extends Model
/** /**
* Creates an active record with the given attributes. * Creates an active record with the given attributes.
* This method is internally used by the find methods. * @param array $row attribute values (name => value)
* @param array $row attribute values (column name=>column value) * @return ActiveRecord the newly created active record.
* @return ActiveRecord the newly created active record. The class of the object is the same as the model class.
* Null is returned if the input data is false.
*/ */
public static function createRecord($row) public static function create($row)
{ {
$record = static::instantiate($row); $record = static::instantiate($row);
$columns = static::getMetaData()->table->columns; $columns = static::getMetaData()->table->columns;

136
framework/db/ar/JoinElement.php
Unescape View File

@ -18,9 +18,13 @@ use yii\db\Exception;
class JoinElement extends \yii\base\Object class JoinElement extends \yii\base\Object
{ {
/** /**
* @var ActiveRelation * @var integer ID of this join element
*/ */
public $relation; public $id;
/**
* @var BaseActiveQuery
*/
public $query;
/** /**
* @var JoinElement the parent element that this element needs to join with * @var JoinElement the parent element that this element needs to join with
*/ */
@ -32,9 +36,9 @@ class JoinElement extends \yii\base\Object
/** /**
* @var JoinElement[] the child elements that have relations declared in the AR class of this element * @var JoinElement[] the child elements that have relations declared in the AR class of this element
*/ */
public $relatedChildren = array(); public $relations = array();
/** /**
* @var boolean whether this element is only for join purpose. If true, data will also be populated into the AR of this element. * @var boolean whether this element is only for join purpose. If false, data will also be populated into the AR of this element.
*/ */
public $joinOnly; public $joinOnly;
@ -44,17 +48,27 @@ class JoinElement extends \yii\base\Object
public $records; public $records;
public $relatedRecords; public $relatedRecords;
public function __construct($relation, $parent, $relatedParent) /**
* @param ActiveRelation|ActiveQuery $query
* @param JoinElement $parent
* @param JoinElement $container
*/
public function __construct($id, $query, $parent, $container)
{ {
$this->relation = $relation; $this->id = $id;
$this->query = $query;
if ($parent !== null) { if ($parent !== null) {
$this->parent = $parent; $this->parent = $parent;
$parent->children[$relation->name] = $this; $parent->children[$query->name] = $this;
$relatedParent->relatedChildren[$relation->name] = $this; $container->relations[$query->name] = $this;
} }
} }
public function populateData($row) /**
* @param array $row
* @return null|ActiveRecord
*/
public function createRecord($row)
{ {
$pk = array(); $pk = array();
foreach ($this->pkAlias as $alias) { foreach ($this->pkAlias as $alias) {
@ -66,7 +80,7 @@ class JoinElement extends \yii\base\Object
} }
$pk = count($pk) === 1 ? $pk[0] : serialize($pk); $pk = count($pk) === 1 ? $pk[0] : serialize($pk);
// create active record // create record
if (isset($this->records[$pk])) { if (isset($this->records[$pk])) {
$record = $this->records[$pk]; $record = $this->records[$pk];
} else { } else {
@ -76,33 +90,37 @@ class JoinElement extends \yii\base\Object
$attributes[$this->columnAliases[$alias]] = $value; $attributes[$this->columnAliases[$alias]] = $value;
} }
} }
$modelClass = $this->relation->modelClass; $modelClass = $this->query->modelClass;
$record = $modelClass::populateData($attributes); $this->records[$pk] = $record = $modelClass::create($attributes);
foreach ($this->children as $child) { foreach ($this->children as $child) {
if ($child->relation->select !== false) { if ($child->query->select !== false || $child->joinOnly) {
$record->initRelation($child->relation); $record->initRelation($child->query);
} }
} }
$this->records[$pk] = $record;
} }
// populate child records // add related records
foreach ($this->relatedChildren as $child) { foreach ($this->relations as $child) {
if ($child->relation->select === false || $child->joinOnly) { if ($child->query->select === false || $child->joinOnly) {
continue; continue;
} }
$childRecord = $child->populateData($row); $childRecord = $child->createRecord($row);
if ($childRecord === null) { if ($childRecord === null) {
continue; continue;
} }
if ($child->relation->hasMany) { if ($child->query->hasMany) {
$fpk = serialize($childRecord->getPrimaryKey()); if ($child->query->indexBy !== null) {
if (isset($this->relatedRecords[$pk][$child->relation->name][$fpk])) { $hash = $childRecord->{$child->query->indexBy};
continue; } else {
$hash = serialize($childRecord->getPrimaryKey());
}
if (!isset($this->relatedRecords[$pk][$child->query->name][$hash])) {
$this->relatedRecords[$pk][$child->query->name][$hash] = true;
$record->addRelatedRecord($child->query, $childRecord);
} }
$this->relatedRecords[$pk][$child->relation->name][$fpk] = true; } else {
$record->addRelatedRecord($child->query, $childRecord);
} }
$record->addRelatedRecord($child->relation, $childRecord);
} }
return $record; return $record;
@ -110,52 +128,53 @@ class JoinElement extends \yii\base\Object
public function buildQuery($query) public function buildQuery($query)
{ {
$tokens = array( $prefixes = array(
'@.' => $this->relation->tableAlias . '.', '@.' => $this->query->tableAlias . '.',
'?.' => $this->parent->relation->tableAlias . '.', '?.' => $this->parent->query->tableAlias . '.',
); );
foreach ($this->buildSelect($this->relation->select) as $column) { $quotedPrefixes = '';
$query->select[] = strtr($column, $tokens); foreach ($this->buildSelect($this->query->select) as $column) {
$query->select[] = strtr($column, $prefixes);
} }
if ($this->relation->where !== null) { if ($this->query->where !== null) {
$query->where[] = strtr($this->relation->where, $tokens); $query->where[] = strtr($this->query->where, $prefixes);
} }
if ($this->relation->having !== null) { if ($this->query->having !== null) {
$query->having[] = strtr($this->relation->having, $tokens); $query->having[] = strtr($this->query->having, $prefixes);
} }
if ($this->relation->via !== null) { if ($this->query->via !== null) {
$query->join[] = $this->relation->via; $query->join[] = $this->query->via;
} }
$modelClass = $this->relation->modelClass; $modelClass = $this->query->modelClass;
$tableName = $modelClass::tableName(); $tableName = $modelClass::tableName();
$joinType = $this->relation->joinType === null ? 'LEFT JOIN' : $this->relation->joinType; $joinType = $this->query->joinType === null ? 'LEFT JOIN' : $this->query->joinType;
$join = "$joinType $tableName {$this->relation->tableAlias}"; $join = "$joinType $tableName {$this->query->tableAlias}";
if ($this->relation->on !== null) { if ($this->query->on !== null) {
$join .= ' ON ' . strtr($this->relation->on, $tokens); $join .= ' ON ' . strtr($this->query->on, $prefixes);
} }
$query->join[] = $join; $query->join[] = $join;
if ($this->relation->join !== null) { if ($this->query->join !== null) {
$query->join[] = strtr($this->relation->join, $tokens); $query->join[] = strtr($this->query->join, $prefixes);
} }
// todo: convert orderBy to array first // todo: convert orderBy to array first
if ($this->relation->orderBy !== null) { if ($this->query->orderBy !== null) {
$query->orderBy[] = strtr($this->relation->orderBy, $tokens); $query->orderBy[] = strtr($this->query->orderBy, $prefixes);
} }
// todo: convert groupBy to array first // todo: convert groupBy to array first
if ($this->relation->groupBy !== null) { if ($this->query->groupBy !== null) {
$query->groupBy[] = strtr($this->relation->groupBy, $tokens); $query->groupBy[] = strtr($this->query->groupBy, $prefixes);
} }
if ($this->relation->params !== null) { if ($this->query->params !== null) {
foreach ($this->relation->params as $name => $value) { foreach ($this->query->params as $name => $value) {
if (is_integer($name)) { if (is_integer($name)) {
$query->params[] = $value; $query->params[] = $value;
} else { } else {
@ -171,14 +190,17 @@ class JoinElement extends \yii\base\Object
public function buildSelect($select) public function buildSelect($select)
{ {
$modelClass = $this->relation->modelClass; if ($select === false) {
$tableSchema = $modelClass::getMetaData()->table; return array();
}
$modelClass = $this->query->modelClass;
$table = $modelClass::getMetaData()->table;
$columns = array(); $columns = array();
$columnCount = 0; $columnCount = 0;
$prefix = $this->relation->tableAlias; $prefix = $this->query->tableAlias;
if (empty($select) || $select === '*') { if (empty($select) || $select === '*') {
foreach ($tableSchema->columns as $column) { foreach ($table->columns as $column) {
$alias = $this->relation->tableAlias . '_' . ($columnCount++); $alias = "t{$this->id}c" . ($columnCount++);
$columns[] = "$prefix.{$column->name} AS $alias"; $columns[] = "$prefix.{$column->name} AS $alias";
$this->columnAliases[$alias] = $column->name; $this->columnAliases[$alias] = $column->name;
if ($column->isPrimaryKey) { if ($column->isPrimaryKey) {
@ -189,8 +211,8 @@ class JoinElement extends \yii\base\Object
if (is_string($select)) { if (is_string($select)) {
$select = explode(',', $select); $select = explode(',', $select);
} }
foreach ($tableSchema->primaryKey as $column) { foreach ($table->primaryKey as $column) {
$alias = $this->relation->tableAlias . '_' . ($columnCount++); $alias = "t{$this->id}c" . ($columnCount++);
$columns[] = "$prefix.$column AS $alias"; $columns[] = "$prefix.$column AS $alias";
$this->pkAlias[$column] = $alias; $this->pkAlias[$column] = $alias;
} }
@ -201,7 +223,7 @@ class JoinElement extends \yii\base\Object
$this->columnAliases[$matches[2]] = $matches[2]; $this->columnAliases[$matches[2]] = $matches[2];
$columns[] = $column; $columns[] = $column;
} elseif (!isset($this->pkAlias[$column])) { } elseif (!isset($this->pkAlias[$column])) {
$alias = $this->relation->tableAlias . '_' . ($columnCount++); $alias = "t{$this->id}c" . ($columnCount++);
$columns[] = "$prefix.$column AS $alias"; $columns[] = "$prefix.$column AS $alias";
$this->columnAliases[$alias] = $column; $this->columnAliases[$alias] = $column;
} }

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