/**
* 获取单条数据
* @param Vo $vo 实体对象
* @param int $id 要查询的条件id
* @throws UnexpectedValueException
* @throws DbException
* @return boolean 未找到数据返回false，找到一条数据返回true ，多条数据会产生异常
*/
public function get(Vo $vo, $id)
{
if (!$vo instanceof PDOVo) {
throw new UnexpectedValueException('vo参数必须为MySQLVo对象。');
}
$vo->createTb($this->_link);
$priKey = $vo->getPrimaryKey();
$where = " `{$priKey}`=:{$priKey} ";
$tbName = $vo->getTableName();
$fieldsArr = $vo->getFields();
$fields = implode(",", $fieldsArr);
$sql = "SELECT {$fields} FROM `" . $tbName . "` WHERE " . $where;
Debug::trace('查询数据:' . $sql, 'mysql');
$sth = $this->_link->prepare($sql);
$sth->bindValue(":{$priKey}", $id);
Debug::trace(":{$priKey}={$id}", 'mysql');
$ret = $sth->execute();
if ($ret === false) {
throw new DbException($sth->errorInfo(), $sth->errorCode());
}
$result = $sth->fetchAll();
if ($result === false) {
throw new DbException($sth->errorInfo(), $sth->errorCode());
}
if (!is_array($result) || !$result) {
return false;
}
if (count($result) > 1) {
throw new DbException('查询到' . count($result) . '数据');
}
$vo->fromArray($result[0]);
//填充对象
return true;
}
/**
* 获取单条数据
* @param Vo $vo 实体对象
* @param int $id 此字段，目前无效
* @return Vo
* @throws UnexpectedValueException
*/
public function get(Vo $vo, $id = 0)
{
if (!$vo instanceof NoSQLVo) {
throw new UnexpectedValueException('vo对象必须为NoSQLVo');
}
$key = $vo->getKey();
$data = $this->_link->get($key, $vo->getCas());
if (!$data) {
return false;
}
$vo->fromArray($data);
return true;
}