tp 5ソース分析のデータベースクエリー
1クエリー・オブジェクト
クエリー・オブジェクト(Query)基本的なクエリー・アクションの実装
モデルとは異なり、クエリー・オブジェクトはデータベース全体で操作されるため、データベース・テーブル・モデルがデータベース内のデータ・テーブルに対する操作を指定する必要があります.
2クエリー操作
2-1追加削除
$query->insert()
$query->insertAll()
$query->selectInsert()
$query->select()
$query->find()
$query->update()
$query->delete()
2-2取引アクション
$query->startTrans()
トランザクションの開始
$query->commit()
トランザクションのコミット
$query->transaction()
トランザクションの実行
$query->rollback()
トランザクションのロールバック
2-3 sql文操作
$query->query()
コネクタを呼び出す静的queryメソッド
$query->execute()
コネクタを呼び出す静的queryメソッド
2-4重合操作
count()
max()
min()
avg()
sum()
$query->value()
$query->column()
2-5チェーン操作
table
where
whereOr
whereXor
whereTime()
field()
limit()
order()
group()
having()
join()
union()
distinct()
lock()
cache()
force()
comment()
alais()
fetchSql()
fetchPdo()
fetchClass()
with()
withField()
via()
relation()
3データテーブル操作
1データテーブル情報
$query->name()
$query->setTable()
$query->getTable()
$query->getTableInfo()
$query->getpk()
2データテーブルフィールド情報
$query->getTableFields()
$query->getFieldsType()
3データテーブルバインド情報
$query->getFieldBind()
$query->getFieldBindType()
4 sql解析合成文操作
1データテーブル解析
$query->parseSqlTable()
2 where文解析
$query->parseWhereExp()
$query->parsePkWhere()
3式の解析
$query->parseExpress()
5クエリー・コンストラクタ
クエリー・オブジェクトはクエリー構造合成SQL文クエリー・コンストラクタを呼び出すことができます.クエリー構造を参照してください.
クエリー・コンストラクタの作成
クエリー・コンストラクタ、異なるデータベースに対してSQL文の接続を駆動する際に異なるクエリー・コンストラクタを作成する必要がある
$query->builder()
異なるデータベースに対して駆動されるクエリー・コンストラクタを作成します.
クエリー・コンストラクタの使用
データベース操作でクエリー・コンストラクタを呼び出してSQL文を接続
クエリー・オブジェクト(Query)基本的なクエリー・アクションの実装
モデルとは異なり、クエリー・オブジェクトはデータベース全体で操作されるため、データベース・テーブル・モデルがデータベース内のデータ・テーブルに対する操作を指定する必要があります.
2クエリー操作
2-1追加削除
$query->insert()
public function insert(array $data, $replace = false, $getLastInsID = false, $sequence = null)
{
//
$options = $this->parseExpress();
// SQL
$sql = $this->builder()->insert($data, $options, $replace);
//
$bind = $this->getBind();
if ($options['fetch_sql']) {
// SQL
return $this->connection->getRealSql($sql, $bind);
}
//
$result = $this->execute($sql, $bind);
if ($getLastInsID) {
$sequence = $sequence ?: (isset($options['sequence']) ? $options['sequence'] : null);
return $this->getLastInsID($sequence);
}
return $result;
}
$query->insertAll()
public function insertAll(array $dataSet)
{
//
$options = $this->parseExpress();
if (!is_array(reset($dataSet))) {
return false;
}
// SQL
$sql = $this->builder()->insertAll($dataSet, $options);
//
$bind = $this->getBind();
if ($options['fetch_sql']) {
// SQL
return $this->connection->getRealSql($sql, $bind);
} else {
//
return $this->execute($sql, $bind);
}
}
$query->selectInsert()
public function selectInsert($fields, $table)
{
//
$options = $this->parseExpress();
// SQL
$table = $this->parseSqlTable($table);
$sql = $this->builder()->selectInsert($fields, $table, $options);
//
$bind = $this->getBind();
if ($options['fetch_sql']) {
// SQL
return $this->connection->getRealSql($sql, $bind);
} else {
//
return $this->execute($sql, $bind);
}
}
$query->select()
public function select($data = null)
{
if ($data instanceof Query) {
return $data->select();
} elseif ($data instanceof \Closure) {
call_user_func_array($data, [ & $this]);
$data = null;
}
//
$options = $this->parseExpress();
if (false === $data) {
// SQL
$options['fetch_sql'] = true;
} elseif (!is_null($data)) {
//
$this->parsePkWhere($data, $options);
}
$resultSet = false;
if (empty($options['fetch_sql']) && !empty($options['cache'])) {
//
$cache = $options['cache'];
unset($options['cache']);
$key = is_string($cache['key']) ? $cache['key'] : md5(serialize($options));
$resultSet = Cache::get($key);
}
if (!$resultSet) {
// SQL
$sql = $this->builder()->select($options);
//
$bind = $this->getBind();
if ($options['fetch_sql']) {
// SQL
return $this->connection->getRealSql($sql, $bind);
}
//
$resultSet = $this->query($sql, $bind, $options['master'], $options['fetch_class']);
if ($resultSet instanceof \PDOStatement) {
// PDOStatement
return $resultSet;
}
if (isset($cache)) {
//
if (isset($cache['tag'])) {
Cache::tag($cache['tag'])->set($key, $resultSet, $cache['expire']);
} else {
Cache::set($key, $resultSet, $cache['expire']);
}
}
}
//
if (count($resultSet) > 0) {
//
if (!empty($this->model)) {
//
$model = $this->model;
foreach ($resultSet as $key => $result) {
/** @var Model $result */
$result = new $model($result);
$result->isUpdate(true);
//
if (!empty($options['relation'])) {
$result->relationQuery($options['relation']);
}
$resultSet[$key] = $result;
}
if (!empty($options['with']) && $result instanceof Model) {
//
$resultSet = $result->eagerlyResultSet($resultSet, $options['with'], is_object($resultSet) ? get_class($resultSet) : '');
}
}
} elseif (!empty($options['fail'])) {
$this->throwNotFound($options);
}
return $resultSet;
}
$query->find()
public function find($data = null)
{
if ($data instanceof Query) {
return $data->find();
} elseif ($data instanceof \Closure) {
call_user_func_array($data, [ & $this]);
$data = null;
}
//
$options = $this->parseExpress();
if (!is_null($data)) {
// AR
$this->parsePkWhere($data, $options);
}
$options['limit'] = 1;
$result = false;
if (empty($options['fetch_sql']) && !empty($options['cache'])) {
//
$cache = $options['cache'];
if (true === $cache['key'] && !is_null($data) && !is_array($data)) {
$key = 'think:' . $options['table'] . '|' . $data;
} else {
$key = is_string($cache['key']) ? $cache['key'] : md5(serialize($options));
}
$result = Cache::get($key);
}
if (!$result) {
// SQL
$sql = $this->builder()->select($options);
//
$bind = $this->getBind();
if ($options['fetch_sql']) {
// SQL
return $this->connection->getRealSql($sql, $bind);
}
//
$result = $this->query($sql, $bind, $options['master'], $options['fetch_class']);
if ($result instanceof \PDOStatement) {
// PDOStatement
return $result;
}
if (isset($cache)) {
//
if (isset($cache['tag'])) {
Cache::tag($cache['tag'])->set($key, $result, $cache['expire']);
} else {
Cache::set($key, $result, $cache['expire']);
}
}
}
//
if (!empty($result[0])) {
$data = $result[0];
if (!empty($this->model)) {
//
$model = $this->model;
$data = new $model($data);
$data->isUpdate(true, isset($options['where']['AND']) ? $options['where']['AND'] : null);
if ($this->allowField) {
$data->allowField($this->allowField);
}
//
if (!empty($options['relation'])) {
$data->relationQuery($options['relation']);
}
if (!empty($options['with'])) {
//
$data->eagerlyResult($data, $options['with'], is_object($result) ? get_class($result) : '');
}
}
} elseif (!empty($options['fail'])) {
$this->throwNotFound($options);
} else {
$data = null;
}
return $data;
}
$query->update()
public function update(array $data)
{
$options = $this->parseExpress();
$pk = $this->getPk($options);
if (isset($options['cache']) && is_string($options['cache'])) {
$key = $options['cache'];
}
if (empty($options['where'])) {
//
if (is_string($pk) && isset($data[$pk])) {
$where[$pk] = $data[$pk];
if (!isset($key)) {
$key = 'think:' . $options['table'] . '|' . $data[$pk];
}
unset($data[$pk]);
} elseif (is_array($pk)) {
//
foreach ($pk as $field) {
if (isset($data[$field])) {
$where[$field] = $data[$field];
} else {
//
throw new Exception('miss complex primary data');
}
unset($data[$field]);
}
}
if (!isset($where)) {
//
throw new Exception('miss update condition');
} else {
$options['where']['AND'] = $where;
}
} elseif (is_string($pk) && isset($options['where']['AND'][$pk]) && is_scalar($options['where']['AND'][$pk])) {
$key = 'think:' . $options['table'] . '|' . $options['where']['AND'][$pk];
}
// UPDATE SQL
$sql = $this->builder()->update($data, $options);
//
$bind = $this->getBind();
if ($options['fetch_sql']) {
// SQL
return $this->connection->getRealSql($sql, $bind);
} else {
//
if (isset($key) && Cache::get($key)) {
//
Cache::rm($key);
}
//
return '' == $sql ? 0 : $this->execute($sql, $bind);
}
}
$query->delete()
public function delete($data = null)
{
//
$options = $this->parseExpress();
if (isset($options['cache']) && is_string($options['cache'])) {
$key = $options['cache'];
}
if (!is_null($data) && true !== $data) {
if (!isset($key) && !is_array($data)) {
//
$key = 'think:' . $options['table'] . '|' . $data;
}
// AR
$this->parsePkWhere($data, $options);
}
if (true !== $data && empty($options['where'])) {
// 1=1
throw new Exception('delete without condition');
}
// SQL
$sql = $this->builder()->delete($options);
//
$bind = $this->getBind();
if ($options['fetch_sql']) {
// SQL
return $this->connection->getRealSql($sql, $bind);
}
//
if (isset($key) && Cache::get($key)) {
//
Cache::rm($key);
}
//
return $this->execute($sql, $bind);
}
2-2取引アクション
$query->startTrans()
トランザクションの開始
public function startTrans()
{
$this->connection->startTrans();
}
$query->commit()
トランザクションのコミット
public function commit()
{
$this->connection->commit();
}
$query->transaction()
トランザクションの実行
public function transaction($callback)
{
return $this->connection->transaction($callback);
}
$query->rollback()
トランザクションのロールバック
public function rollback()
{
$this->connection->rollback();
}
2-3 sql文操作
$query->query()
コネクタを呼び出す静的queryメソッド
public function query($sql, $bind = [], $master = false, $class = false)
{
return $this->connection->query($sql, $bind, $master, $class);
}
$query->execute()
コネクタを呼び出す静的queryメソッド
public function execute($sql, $bind = [])
{
return $this->connection->execute($sql, $bind);
}
2-4重合操作
count()
public function count($field = '*')
{
return $this->value('COUNT(' . $field . ') AS tp_count', 0);
}
max()
public function max($field = '*')
{
return $this->value('MAX(' . $field . ') AS tp_max', 0);
}
min()
public function min($field = '*')
{
return $this->value('MIN(' . $field . ') AS tp_min', 0);
}
avg()
public function avg($field = '*')
{
return $this->value('AVG(' . $field . ') AS tp_avg', 0);
}
sum()
public function sum($field = '*')
{
return $this->value('SUM(' . $field . ') AS tp_sum', 0);
}
$query->value()
public function value($field, $default = null)
{
$result = null;
if (!empty($this->options['cache'])) {
//
$cache = $this->options['cache'];
if (empty($this->options['table'])) {
$this->options['table'] = $this->getTable();
}
$key = is_string($cache['key']) ? $cache['key'] : md5($field . serialize($this->options));
$result = Cache::get($key);
}
if (!$result) {
if (isset($this->options['field'])) {
unset($this->options['field']);
}
$pdo = $this->field($field)->fetchPdo(true)->find();
if (is_string($pdo)) {
// SQL
return $pdo;
}
$result = $pdo->fetchColumn();
if (isset($cache)) {
//
if (isset($cache['tag'])) {
Cache::tag($cache['tag'])->set($key, $result, $cache['expire']);
} else {
Cache::set($key, $result, $cache['expire']);
}
}
} else {
//
$this->options = [];
}
return !is_null($result) ? $result : $default;
}
$query->column()
public function column($field, $key = '')
{
$result = false;
if (!empty($this->options['cache'])) {
//
$cache = $this->options['cache'];
if (empty($this->options['table'])) {
$this->options['table'] = $this->getTable();
}
$guid = is_string($cache['key']) ? $cache['key'] : md5($field . serialize($this->options));
$result = Cache::get($guid);
}
if (!$result) {
if (isset($this->options['field'])) {
unset($this->options['field']);
}
if ($key && '*' != $field) {
$field = $key . ',' . $field;
}
$pdo = $this->field($field)->fetchPdo(true)->select();
if (is_string($pdo)) {
// SQL
return $pdo;
}
if (1 == $pdo->columnCount()) {
$result = $pdo->fetchAll(PDO::FETCH_COLUMN);
} else {
$resultSet = $pdo->fetchAll(PDO::FETCH_ASSOC);
if ($resultSet) {
$fields = array_keys($resultSet[0]);
$count = count($fields);
$key1 = array_shift($fields);
$key2 = $fields ? array_shift($fields) : '';
$key = $key ?: $key1;
foreach ($resultSet as $val) {
if ($count > 2) {
$result[$val[$key]] = $val;
} elseif (2 == $count) {
$result[$val[$key]] = $val[$key2];
} elseif (1 == $count) {
$result[$val[$key]] = $val[$key1];
}
}
} else {
$result = [];
}
}
if (isset($cache) && isset($guid)) {
//
if (isset($cache['tag'])) {
Cache::tag($cache['tag'])->set($guid, $result, $cache['expire']);
} else {
Cache::set($guid, $result, $cache['expire']);
}
}
} else {
//
$this->options = [];
}
return $result;
}
2-5チェーン操作
table
public function table($table)
{
$this->options['table'] = $table;
return $this;
}
where
public function where($field, $op = null, $condition = null)
{
$param = func_get_args();
array_shift($param);
$this->parseWhereExp('AND', $field, $op, $condition, $param);
return $this;
}
whereOr
public function whereOr($field, $op = null, $condition = null)
{
$param = func_get_args();
array_shift($param);
$this->parseWhereExp('OR', $field, $op, $condition, $param);
return $this;
}
whereXor
public function whereXor($field, $op = null, $condition = null)
{
$param = func_get_args();
array_shift($param);
$this->parseWhereExp('XOR', $field, $op, $condition, $param);
return $this;
}
whereTime()
public function whereTime($field, $op, $range = null)
{
if (is_null($range)) {
//
$date = getdate();
switch (strtolower($op)) {
case 'today':
case 'd':
$range = 'today';
break;
case 'week':
case 'w':
$range = 'this week 00:00:00';
break;
case 'month':
case 'm':
$range = mktime(0, 0, 0, $date['mon'], 1, $date['year']);
break;
case 'year':
case 'y':
$range = mktime(0, 0, 0, 1, 1, $date['year']);
break;
case 'yesterday':
$range = ['yesterday', 'today'];
break;
case 'last week':
$range = ['last week 00:00:00', 'this week 00:00:00'];
break;
case 'last month':
$range = [date('y-m-01', strtotime('-1 month')), mktime(0, 0, 0, $date['mon'], 1, $date['year'])];
break;
case 'last year':
$range = [mktime(0, 0, 0, 1, 1, $date['year'] - 1), mktime(0, 0, 0, 1, 1, $date['year'])];
break;
}
$op = is_array($range) ? 'between' : '>';
}
$this->where($field, strtolower($op) . ' time', $range);
return $this;
}
field()
public function field($field, $except = false, $tableName = '', $prefix = '', $alias = '')
{
if (empty($field)) {
return $this;
}
if (is_string($field)) {
$field = array_map('trim', explode(',', $field));
}
if (true === $field) {
//
$fields = !empty($this->allowField) && ('' == $tableName || $this->getTable() == $tableName) ? $this->allowField : $this->getTableInfo($tableName ?: (isset($this->options['table']) ? $this->options['table'] : ''), 'fields');
$field = $fields ?: ['*'];
} elseif ($except) {
//
$fields = !empty($this->allowField) && ('' == $tableName || $this->getTable() == $tableName) ? $this->allowField : $this->getTableInfo($tableName ?: (isset($this->options['table']) ? $this->options['table'] : ''), 'fields');
$field = $fields ? array_diff($fields, $field) : $field;
}
if ($tableName) {
//
$prefix = $prefix ?: $tableName;
foreach ($field as $key => $val) {
if (is_numeric($key)) {
$val = $prefix . '.' . $val . ($alias ? ' AS ' . $alias . $val : '');
}
$field[$key] = $val;
}
}
if (isset($this->options['field'])) {
$field = array_merge($this->options['field'], $field);
}
$this->options['field'] = array_unique($field);
return $this;
}
limit()
public function limit($offset, $length = null)
{
if (is_null($length) && strpos($offset, ',')) {
list($offset, $length) = explode(',', $offset);
}
$this->options['limit'] = intval($offset) . ($length ? ',' . intval($length) : '');
return $this;
}
order()
public function order($field, $order = null)
{
if (!empty($field)) {
if (is_string($field)) {
if (!empty($this->options['via'])) {
$field = $this->options['via'] . '.' . $field;
}
$field = empty($order) ? $field : [$field => $order];
} elseif (!empty($this->options['via'])) {
foreach ($field as $key => $val) {
if (is_numeric($key)) {
$field[$key] = $this->options['via'] . '.' . $val;
} else {
$field[$this->options['via'] . '.' . $key] = $val;
unset($field[$key]);
}
}
}
$this->options['order'] = $field;
}
return $this;
}
group()
public function group($group)
{
$this->options['group'] = $group;
return $this;
}
having()
public function having($having)
{
$this->options['having'] = $having;
return $this;
}
join()
public function join($join, $condition = null, $type = 'INNER')
{
if (empty($condition)) {
// ， join
foreach ($join as $key => $value) {
if (is_array($value) && 2 <= count($value)) {
$this->join($value[0], $value[1], isset($value[2]) ? $value[2] : $type);
}
}
} else {
$prefix = $this->prefix;
//
if (is_array($join)) {
if (0 !== $key = key($join)) {
// ，
$table = $key . ' ' . array_shift($join);
} else {
$table = array_shift($join);
}
if (count($join)) {
//
$table = (string) current($join) . $table;
} elseif (false === strpos($table, '.')) {
//
$table = $prefix . $table;
}
} else {
$join = trim($join);
if (0 === strpos($join, '__')) {
$table = $this->parseSqlTable($join);
} elseif (false === strpos($join, '(') && false === strpos($join, '.') && !empty($prefix) && 0 !== strpos($join, $prefix)) {
// '('
$table = $prefix . $join;
} else {
$table = $join;
}
}
if (is_array($condition)) {
$condition = implode(' AND ', $condition);
}
$this->options['join'][] = strtoupper($type) . ' JOIN ' . $table . ' ON ' . $condition;
}
return $this;
}
union()
public function union($union, $all = false)
{
$this->options['union']['type'] = $all ? 'UNION ALL' : 'UNION';
if (is_array($union)) {
$this->options['union'] = array_merge($this->options['union'], $union);
} else {
$this->options['union'][] = $union;
}
return $this;
}
distinct()
public function distinct($distinct)
{
$this->options['distinct'] = $distinct;
return $this;
}
lock()
public function lock($lock = false)
{
$this->options['lock'] = $lock;
$this->options['master'] = true;
return $this;
}
cache()
public function cache($key = true, $expire = null, $tag = null)
{
// cache(10) cache(true, 10)
if (is_numeric($key) && is_null($expire)) {
$expire = $key;
$key = true;
}
if (false !== $key) {
$this->options['cache'] = ['key' => $key, 'expire' => $expire, 'tag' => $tag];
}
return $this;
}
force()
public function force($force)
{
$this->options['force'] = $force;
return $this;
}
comment()
public function comment($comment)
{
$this->options['comment'] = $comment;
return $this;
}
alais()
public function alias($alias)
{
$this->options['alias'] = $alias;
return $this;
}
fetchSql()
public function fetchSql($fetch = true)
{
$this->options['fetch_sql'] = $fetch;
return $this;
}
fetchPdo()
public function fetchPdo($pdo = true)
{
$this->options['fetch_class'] = $pdo;
return $this;
}
fetchClass()
public function fetchClass($class)
{
$this->options['fetch_class'] = $class;
return $this;
}
with()
public function with($with)
{
if (empty($with)) {
return $this;
}
if (is_string($with)) {
$with = explode(',', $with);
}
$i = 0;
$currentModel = $this->model;
/** @var Model $class */
$class = new $currentModel;
foreach ($with as $key => $relation) {
$closure = false;
if ($relation instanceof \Closure) {
//
$closure = $relation;
$relation = $key;
$with[$key] = $key;
} elseif (is_string($relation) && strpos($relation, '.')) {
$with[$key] = $relation;
list($relation, $subRelation) = explode('.', $relation, 2);
}
/** @var Relation $model */
$model = $class->$relation();
$info = $model->getRelationInfo();
if (in_array($info['type'], [Relation::HAS_ONE, Relation::BELONGS_TO])) {
if (0 == $i) {
$name = Loader::parseName(basename(str_replace('\\', '/', $currentModel)));
$table = $this->getTable();
$alias = isset($info['alias'][$name]) ? $info['alias'][$name] : $name;
$this->table($table)->alias($alias);
if (isset($this->options['field'])) {
$field = $this->options['field'];
unset($this->options['field']);
} else {
$field = true;
}
$this->field($field, false, $table, $alias);
}
//
$joinTable = $model->getTable();
$joinName = Loader::parseName(basename(str_replace('\\', '/', $info['model'])));
$joinAlias = isset($info['alias'][$joinName]) ? $info['alias'][$joinName] : $joinName;
$this->via($joinAlias);
if (Relation::HAS_ONE == $info['type']) {
$this->join($joinTable . ' ' . $joinAlias, $alias . '.' . $info['localKey'] . '=' . $joinAlias . '.' . $info['foreignKey'], $info['joinType']);
} else {
$this->join($joinTable . ' ' . $joinAlias, $alias . '.' . $info['foreignKey'] . '=' . $joinAlias . '.' . $info['localKey'], $info['joinType']);
}
if ($closure) {
//
call_user_func_array($closure, [ & $this]);
//
// withField ，
// $query->where(['id'=>1])->withField('id,name');
if (!empty($this->options['with_field'])) {
$field = $this->options['with_field'];
unset($this->options['with_field']);
}
}
$this->field($field, false, $joinTable, $joinAlias, $relation . '__');
$i++;
} elseif ($closure) {
$with[$key] = $closure;
}
}
$this->via();
$this->options['with'] = $with;
return $this;
}
withField()
public function withField($field)
{
$this->options['with_field'] = $field;
return $this;
}
via()
public function via($via = '')
{
$this->options['via'] = $via;
return $this;
}
relation()
public function relation($relation)
{
$this->options['relation'] = $relation;
return $this;
}
3データテーブル操作
1データテーブル情報
$query->name()
public function name($name)
{
$this->name = $name;
return $this;
}
$query->setTable()
public function setTable($table)
{
$this->table = $table;
return $this;
}
$query->getTable()
public function getTable($name = '')
{
if ($name || empty($this->table)) {
$name = $name ?: $this->name;
$tableName = $this->prefix;
if ($name) {
$tableName .= Loader::parseName($name);
}
} else {
$tableName = $this->table;
}
return $tableName;
}
$query->getTableInfo()
public function getTableInfo($tableName = '', $fetch = '')
{
if (!$tableName) {
$tableName = $this->getTable();
}
if (is_array($tableName)) {
$tableName = key($tableName) ?: current($tableName);
}
if (strpos($tableName, ',')) {
//
return false;
} else {
$tableName = $this->parseSqlTable($tableName);
}
list($guid) = explode(' ', $tableName);
if (!isset(self::$info[$guid])) {
$info = $this->connection->getFields($tableName);
$fields = array_keys($info);
$bind = $type = [];
foreach ($info as $key => $val) {
//
$type[$key] = $val['type'];
$bind[$key] = $this->getFieldBindType($val['type']);
if (!empty($val['primary'])) {
$pk[] = $key;
}
}
if (isset($pk)) {
//
$pk = count($pk) > 1 ? $pk : $pk[0];
} else {
$pk = null;
}
self::$info[$guid] = ['fields' => $fields, 'type' => $type, 'bind' => $bind, 'pk' => $pk];
}
return $fetch ? self::$info[$guid][$fetch] : self::$info[$guid];
}
$query->getpk()
public function getPk($options = '')
{
if (!empty($this->pk)) {
$pk = $this->pk;
} else {
$pk = $this->getTableInfo(is_array($options) ? $options['table'] : $options, 'pk');
}
return $pk;
}
2データテーブルフィールド情報
$query->getTableFields()
public function getTableFields($options)
{
return !empty($this->allowField) ? $this->allowField : $this->getTableInfo($options['table'], 'fields');
}
$query->getFieldsType()
public function getFieldsType($options)
{
return !empty($this->fieldType) ? $this->fieldType : $this->getTableInfo($options['table'], 'type');
}
3データテーブルバインド情報
$query->getFieldBind()
public function getFieldsBind($options)
{
$types = $this->getFieldsType($options);
$bind = [];
if ($types) {
foreach ($types as $key => $type) {
$bind[$key] = $this->getFieldBindType($type);
}
}
return $bind;
}
$query->getFieldBindType()
protected function getFieldBindType($type)
{
if (preg_match('/(int|double|float|decimal|real|numeric|serial)/is', $type)) {
$bind = PDO::PARAM_INT;
} elseif (preg_match('/bool/is', $type)) {
$bind = PDO::PARAM_BOOL;
} else {
$bind = PDO::PARAM_STR;
}
return $bind;
}
4 sql解析合成文操作
1データテーブル解析
$query->parseSqlTable()
public function parseSqlTable($sql)
{
if (false !== strpos($sql, '__')) {
$prefix = $this->prefix;
$sql = preg_replace_callback("/__([A-Z0-9_-]+)__/sU", function ($match) use ($prefix) {
return $prefix . strtolower($match[1]);
}, $sql);
}
return $sql;
}
2 where文解析
$query->parseWhereExp()
protected function parseWhereExp($logic, $field, $op, $condition, $param = [])
{
if ($field instanceof \Closure) {
$this->options['where'][$logic][] = is_string($op) ? [$op, $field] : $field;
return;
}
if (is_string($field) && !empty($this->options['via']) && !strpos($field, '.')) {
$field = $this->options['via'] . '.' . $field;
}
if (is_string($field) && preg_match('/[,=\>\, $field)) {
$where[] = ['exp', $field];
if (is_array($op)) {
//
$this->bind($op);
}
} elseif (is_null($op) && is_null($condition)) {
if (is_array($field)) {
//
$where = $field;
} elseif ($field) {
//
if (is_numeric($field)) {
$where[] = ['exp', $field];
} else {
$where[$field] = ['null', ''];
}
}
} elseif (is_array($op)) {
$where[$field] = $param;
} elseif (in_array(strtolower($op), ['null', 'notnull', 'not null'])) {
// null
$where[$field] = [$op, ''];
} elseif (is_null($condition)) {
//
$where[$field] = ['eq', $op];
} else {
$where[$field] = [$op, $condition];
}
if (!empty($where)) {
if (!isset($this->options['where'][$logic])) {
$this->options['where'][$logic] = [];
}
$this->options['where'][$logic] = array_merge($this->options['where'][$logic], $where);
}
}
$query->parsePkWhere()
protected function parsePkWhere($data, &$options)
{
$pk = $this->getPk($options);
//
if (!empty($options['alias'])) {
$alias = $options['alias'];
}
if (is_string($pk)) {
$key = isset($alias) ? $alias . '.' . $pk : $pk;
//
if (is_array($data)) {
$where[$key] = isset($data[$pk]) ? $data[$pk] : ['in', $data];
} else {
$where[$key] = strpos($data, ',') ? ['IN', $data] : $data;
}
} elseif (is_array($pk) && is_array($data) && !empty($data)) {
//
foreach ($pk as $key) {
if (isset($data[$key])) {
$attr = isset($alias) ? $alias . '.' . $key : $key;
$where[$attr] = $data[$key];
} else {
throw new Exception('miss complex primary data');
}
}
}
if (!empty($where)) {
if (isset($options['where']['AND'])) {
$options['where']['AND'] = array_merge($options['where']['AND'], $where);
} else {
$options['where']['AND'] = $where;
}
}
return;
}
3式の解析
$query->parseExpress()
protected function parseExpress()
{
$options = $this->options;
//
if (empty($options['table'])) {
$options['table'] = $this->getTable();
}
if (!isset($options['where'])) {
$options['where'] = [];
} elseif (isset($options['view'])) {
//
foreach (['AND', 'OR'] as $logic) {
if (isset($options['where'][$logic])) {
foreach ($options['where'][$logic] as $key => $val) {
if (array_key_exists($key, $options['map'])) {
$options['where'][$logic][$options['map'][$key]] = $val;
unset($options['where'][$logic][$key]);
}
}
}
}
if (isset($options['order'])) {
//
if (is_string($options['order'])) {
$options['order'] = explode(',', $options['order']);
}
foreach ($options['order'] as $key => $val) {
if (is_numeric($key)) {
if (strpos($val, ' ')) {
list($field, $sort) = explode(' ', $val);
if (array_key_exists($field, $options['map'])) {
$options['order'][$options['map'][$field]] = $sort;
unset($options['order'][$key]);
}
} elseif (array_key_exists($val, $options['map'])) {
$options['order'][$options['map'][$val]] = 'asc';
unset($options['order'][$key]);
}
} elseif (array_key_exists($key, $options['map'])) {
$options['order'][$options['map'][$key]] = $val;
unset($options['order'][$key]);
}
}
}
}
//
if (!empty($options['alias'])) {
$options['table'] .= ' ' . $options['alias'];
}
if (!isset($options['field'])) {
$options['field'] = '*';
}
if (!isset($options['strict'])) {
$options['strict'] = $this->getConfig('fields_strict');
}
foreach (['master', 'lock', 'fetch_class', 'fetch_sql', 'distinct'] as $name) {
if (!isset($options[$name])) {
$options[$name] = false;
}
}
foreach (['join', 'union', 'group', 'having', 'limit', 'order', 'force', 'comment'] as $name) {
if (!isset($options[$name])) {
$options[$name] = '';
}
}
if (isset($options['page'])) {
// limit
list($page, $listRows) = $options['page'];
$page = $page > 0 ? $page : 1;
$listRows = $listRows > 0 ? $listRows : (is_numeric($options['limit']) ? $options['limit'] : 20);
$offset = $listRows * ($page - 1);
$options['limit'] = $offset . ',' . $listRows;
}
$this->options = [];
return $options;
}
5クエリー・コンストラクタ
クエリー・オブジェクトはクエリー構造合成SQL文クエリー・コンストラクタを呼び出すことができます.クエリー構造を参照してください.
クエリー・コンストラクタの作成
クエリー・コンストラクタ、異なるデータベースに対してSQL文の接続を駆動する際に異なるクエリー・コンストラクタを作成する必要がある
$query->builder()
異なるデータベースに対して駆動されるクエリー・コンストラクタを作成します.
protected function builder()
{
static $builder = [];
$driver = $this->builder;
if (!isset($builder[$driver])) {
$class = false !== strpos($driver, '\\') ? $driver : '\\think\\db\\builder\\' . ucfirst($driver);
$builder[$driver] = new $class($this->connection);
}
//
$builder[$driver]->setQuery($this);
return $builder[$driver];
}
クエリー・コンストラクタの使用
データベース操作でクエリー・コンストラクタを呼び出してSQL文を接続
;insert $query->builder()->insert() insert
public function insert(array $data, $replace = false, $getLastInsID = false, $sequence = null)
{
//
$options = $this->parseExpress();
// SQL
$sql = $this->builder()->insert($data, $options, $replace);
//
$bind = $this->getBind();
if ($options['fetch_sql']) {
// SQL
return $this->connection->getRealSql($sql, $bind);
}
//
$result = $this->execute($sql, $bind);
if ($getLastInsID) {
$sequence = $sequence ?: (isset($options['sequence']) ? $options['sequence'] : null);
return $this->getLastInsID($sequence);
}
return $result;
}
； update $query->builder()->update() update
public function update(array $data)
{
$options = $this->parseExpress();
$pk = $this->getPk($options);
if (isset($options['cache']) && is_string($options['cache'])) {
$key = $options['cache'];
}
if (empty($options['where'])) {
//
if (is_string($pk) && isset($data[$pk])) {
$where[$pk] = $data[$pk];
if (!isset($key)) {
$key = 'think:' . $options['table'] . '|' . $data[$pk];
}
unset($data[$pk]);
} elseif (is_array($pk)) {
//
foreach ($pk as $field) {
if (isset($data[$field])) {
$where[$field] = $data[$field];
} else {
//
throw new Exception('miss complex primary data');
}
unset($data[$field]);
}
}
if (!isset($where)) {
//
throw new Exception('miss update condition');
} else {
$options['where']['AND'] = $where;
}
} elseif (is_string($pk) && isset($options['where']['AND'][$pk]) && is_scalar($options['where']['AND'][$pk])) {
$key = 'think:' . $options['table'] . '|' . $options['where']['AND'][$pk];
}
// UPDATE SQL
$sql = $this->builder()->update($data, $options);
//
$bind = $this->getBind();
if ($options['fetch_sql']) {
// SQL
return $this->connection->getRealSql($sql, $bind);
} else {
//
if (isset($key) && Cache::get($key)) {
//
Cache::rm($key);
}
//
return '' == $sql ? 0 : $this->execute($sql, $bind);
}
}