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- <?php
- namespace Cube\Db;
- use Cube\Db\Adapter\AbstractAdapter,
- Cube\Exception;
- class Select
- {
- const DISTINCT = 'distinct';
- const COLUMNS = 'columns';
- const FROM = 'from';
- const UNION = 'union';
- const WHERE = 'where';
- const GROUP = 'group';
- const HAVING = 'having';
- const ORDER = 'order';
- const LIMIT_COUNT = 'limitcount';
- const LIMIT_OFFSET = 'limitoffset';
- const FOR_UPDATE = 'forupdate';
- const INNER_JOIN = 'inner join';
- const LEFT_JOIN = 'left join';
- const RIGHT_JOIN = 'right join';
- const FULL_JOIN = 'full join';
- const CROSS_JOIN = 'cross join';
- const NATURAL_JOIN = 'natural join';
- const SQL_WILDCARD = '*';
- const SQL_SELECT = 'SELECT';
- const SQL_UNION = 'UNION';
- const SQL_UNION_ALL = 'UNION ALL';
- const SQL_FROM = 'FROM';
- const SQL_WHERE = 'WHERE';
- const SQL_DISTINCT = 'DISTINCT';
- const SQL_GROUP_BY = 'GROUP BY';
- const SQL_ORDER_BY = 'ORDER BY';
- const SQL_HAVING = 'HAVING';
- const SQL_FOR_UPDATE = 'FOR UPDATE';
- const SQL_AND = 'AND';
- const SQL_AS = 'AS';
- const SQL_OR = 'OR';
- const SQL_ON = 'ON';
- const SQL_ASC = 'ASC';
- const SQL_DESC = 'DESC';
-
- protected $_bind = array();
-
- protected $_adapter;
-
- protected static $_partsInit = array(
- self::DISTINCT => false,
- self::COLUMNS => array(),
- self::FROM => array(),
- self::WHERE => array(),
- self::GROUP => array(),
- self::HAVING => array(),
- self::UNION => array(),
- self::ORDER => array(),
- self::LIMIT_COUNT => null,
- self::LIMIT_OFFSET => null,
- self::FOR_UPDATE => false
- );
-
- protected static $_joinTypes = array(
- self::INNER_JOIN,
- self::LEFT_JOIN,
- self::RIGHT_JOIN,
- self::FULL_JOIN,
- self::CROSS_JOIN,
- self::NATURAL_JOIN,
- );
-
- protected static $_unionTypes = array(
- self::SQL_UNION,
- self::SQL_UNION_ALL
- );
-
- protected $_parts = array();
-
- protected $_tableCols = array();
-
- protected $_prefix;
-
- public function __construct(AbstractAdapter $adapter)
- {
- $this->_adapter = $adapter;
- $adapterConfig = $adapter->getConfig();
- if (isset($adapterConfig['prefix'])) {
- $this->setPrefix(
- $adapterConfig['prefix']);
- }
- $this->_parts = self::$_partsInit;
- }
-
- public function getBind()
- {
- return $this->_bind;
- }
-
- public function getPrefix()
- {
- return $this->_prefix;
- }
-
- public function setPrefix($prefix = null)
- {
- $this->_prefix = $prefix;
- return $this;
- }
-
- public function bind($bind)
- {
- $this->_bind = $bind;
- return $this;
- }
-
- public function distinct($flag = true)
- {
- $this->_parts[self::DISTINCT] = (bool)$flag;
- return $this;
- }
-
- public function from($name, $cols = '*', $schema = null)
- {
- return $this->_join(self::FROM, $name, null, $cols, $schema);
- }
-
- public function columns($cols = '*', $correlationName = null)
- {
- if ($correlationName === null && count($this->_parts[self::FROM])) {
- $correlationNameKeys = array_keys($this->_parts[self::FROM]);
- $correlationName = current($correlationNameKeys);
- }
- $this->_tableCols($correlationName, $cols);
- return $this;
- }
-
- public function union($select = array(), $type = self::SQL_UNION)
- {
- if (!is_array($select)) {
- throw new \RuntimeException(
- "union() only accepts an array of \Cube\Db\Select instances of sql query strings."
- );
- }
- if (!in_array($type, self::$_unionTypes)) {
- throw new \RuntimeException(
- sprintf("Invalid union type '%s'", $type));
- }
- foreach ($select as $target) {
- $this->_parts[self::UNION][] = array($target, $type);
- }
- return $this;
- }
-
- public function join($name, $cond, $cols = self::SQL_WILDCARD, $schema = null)
- {
- return $this->joinInner($name, $cond, $cols, $schema);
- }
-
- public function joinInner($name, $cond, $cols = self::SQL_WILDCARD, $schema = null)
- {
- return $this->_join(self::INNER_JOIN, $name, $cond, $cols, $schema);
- }
-
- public function joinLeft($name, $cond, $cols = self::SQL_WILDCARD, $schema = null)
- {
- return $this->_join(self::LEFT_JOIN, $name, $cond, $cols, $schema);
- }
-
- public function joinRight($name, $cond, $cols = self::SQL_WILDCARD, $schema = null)
- {
- return $this->_join(self::RIGHT_JOIN, $name, $cond, $cols, $schema);
- }
-
- public function joinFull($name, $cond, $cols = self::SQL_WILDCARD, $schema = null)
- {
- return $this->_join(self::FULL_JOIN, $name, $cond, $cols, $schema);
- }
-
- public function joinCross($name, $cols = self::SQL_WILDCARD, $schema = null)
- {
- return $this->_join(self::CROSS_JOIN, $name, null, $cols, $schema);
- }
-
- public function joinNatural($name, $cols = self::SQL_WILDCARD, $schema = null)
- {
- return $this->_join(self::NATURAL_JOIN, $name, null, $cols, $schema);
- }
-
- public function where($cond, $value = null, $type = null)
- {
- $where = $this->_where($cond, $value, $type, true);
- if ($where !== null) {
- $this->_parts[self::WHERE][] = $where;
- }
- return $this;
- }
-
- public function orWhere($cond, $value = null, $type = null)
- {
- $this->_parts[self::WHERE][] = $this->_where($cond, $value, $type, false);
- return $this;
- }
-
- public function group($spec)
- {
- if (!is_array($spec)) {
- $spec = array($spec);
- }
- foreach ($spec as $val) {
- if (preg_match('/\(.*\)/', (string)$val)) {
- $val = new Expr($val);
- }
- $this->_parts[self::GROUP][] = $val;
- }
- return $this;
- }
-
- public function having($cond, $value = null, $type = null)
- {
- if ($value !== null) {
- $cond = $this->_adapter->quoteInto($cond, $value, $type);
- }
- if ($this->_parts[self::HAVING]) {
- $this->_parts[self::HAVING][] = self::SQL_AND . " ($cond)";
- }
- else {
- $this->_parts[self::HAVING][] = "($cond)";
- }
- return $this;
- }
-
- public function orHaving($cond, $value = null, $type = null)
- {
- if ($value !== null) {
- $cond = $this->_adapter->quoteInto($cond, $value, $type);
- }
- if ($this->_parts[self::HAVING]) {
- $this->_parts[self::HAVING][] = self::SQL_OR . " ($cond)";
- }
- else {
- $this->_parts[self::HAVING][] = "($cond)";
- }
- return $this;
- }
-
- public function order($spec)
- {
- if (!is_array($spec)) {
- $spec = array($spec);
- }
-
- foreach ($spec as $val) {
- if ($val instanceof Expr) {
- $expr = $val->__toString();
- if (empty($expr)) {
- continue;
- }
- $this->_parts[self::ORDER][] = $val;
- }
- else {
- if (empty($val)) {
- continue;
- }
- $direction = self::SQL_ASC;
- if (preg_match('/(.*\W)(' . self::SQL_ASC . '|' . self::SQL_DESC . ')\b/si', $val, $matches)) {
- $val = trim($matches[1]);
- $direction = $matches[2];
- }
- if (preg_match('/\(.*\)/', $val)) {
- $val = new Expr($val);
- }
- $this->_parts[self::ORDER][] = array($val, $direction);
- }
- }
- return $this;
- }
-
- public function limit($count = null, $offset = null)
- {
- $this->_parts[self::LIMIT_COUNT] = (int)$count;
- $this->_parts[self::LIMIT_OFFSET] = (int)$offset;
- return $this;
- }
-
- public function limitPage($page, $rowCount)
- {
- $page = ($page > 0) ? $page : 1;
- $rowCount = ($rowCount > 0) ? $rowCount : 1;
- $this->_parts[self::LIMIT_COUNT] = (int)$rowCount;
- $this->_parts[self::LIMIT_OFFSET] = (int)$rowCount * ($page - 1);
- return $this;
- }
-
- public function forUpdate($flag = true)
- {
- $this->_parts[self::FOR_UPDATE] = (bool)$flag;
- return $this;
- }
-
- public function getPart($part)
- {
- $part = strtolower($part);
- if (!array_key_exists($part, $this->_parts)) {
- throw new \InvalidArgumentException(
- sprintf("Invalid Select part '%s'", $part));
- }
- return $this->_parts[$part];
- }
-
- public function query($fetchMode = null, $bind = array())
- {
- if (!empty($bind)) {
- $this->bind($bind);
- }
- $stmt = $this->_adapter->query($this);
- if ($fetchMode == null) {
- $fetchMode = $this->_adapter->getFetchMode();
- }
- $stmt->setFetchMode($fetchMode);
- return $stmt;
- }
-
- public function assemble()
- {
- $sql = self::SQL_SELECT;
- foreach (array_keys(self::$_partsInit) as $part) {
- $method = '_render' . ucfirst($part);
- if (method_exists($this, $method)) {
- $sql = $this->$method($sql);
- }
- }
- return $sql;
- }
-
- public function reset($part = null)
- {
- if ($part == null) {
- $this->_parts = self::$_partsInit;
- }
- else if (array_key_exists($part, self::$_partsInit)) {
- $this->_parts[$part] = self::$_partsInit[$part];
- }
- return $this;
- }
-
- public function getAdapter()
- {
- return $this->_adapter;
- }
-
- protected function _join($type, $name, $cond, $cols, $schema = null)
- {
- if (!in_array($type, self::$_joinTypes) && $type != self::FROM) {
- throw new \InvalidArgumentException(
- sprintf("Invalid join type '%s'", $type));
- }
- if (count($this->_parts[self::UNION])) {
- throw new \InvalidArgumentException(
- sprintf("Invalid use of table with %s", self::SQL_UNION));
- }
- if (empty($name)) {
- $correlationName = $tableName = '';
- }
- else if (is_array($name)) {
-
- foreach ($name as $_correlationName => $_tableName) {
- if (is_string($_correlationName)) {
-
- $tableName = $_tableName;
- $correlationName = $_correlationName;
- }
- else {
-
- $tableName = $_tableName;
- $correlationName = $this->_uniqueCorrelation($tableName);
- }
- break;
- }
- }
- else if ($name instanceof Expr || $name instanceof Select) {
- $tableName = $name;
- $correlationName = $this->_uniqueCorrelation('t');
- }
- else if (preg_match('/^(.+)\s+AS\s+(.+)$/i', $name, $m)) {
- $tableName = $m[1];
- $correlationName = $m[2];
- }
- else {
- $tableName = $name;
- $correlationName = $this->_uniqueCorrelation($tableName);
- }
-
- if (!is_object($tableName) && false !== strpos($tableName, '.')) {
- list($schema, $tableName) = explode('.', $tableName);
- }
- $lastFromCorrelationName = null;
- if (!empty($correlationName)) {
- if (array_key_exists($correlationName, $this->_parts[self::FROM])) {
- throw new \RuntimeException(
- sprintf("You cannot define a correlation name '%s' more than once", $correlationName));
- }
- if ($type == self::FROM) {
-
- $tmpFromParts = $this->_parts[self::FROM];
- $this->_parts[self::FROM] = array();
-
- while ($tmpFromParts) {
- $currentCorrelationName = key($tmpFromParts);
- if ($tmpFromParts[$currentCorrelationName]['joinType'] != self::FROM) {
- break;
- }
- $lastFromCorrelationName = $currentCorrelationName;
- $this->_parts[self::FROM][$currentCorrelationName] = array_shift($tmpFromParts);
- }
- }
- else {
- $tmpFromParts = array();
- }
- $this->_parts[self::FROM][$correlationName] = array(
- 'joinType' => $type,
- 'schema' => $schema,
- 'tableName' => $this->_prefix . $tableName,
- 'joinCondition' => $cond
- );
- while ($tmpFromParts) {
- $currentCorrelationName = key($tmpFromParts);
- $this->_parts[self::FROM][$currentCorrelationName] = array_shift($tmpFromParts);
- }
- }
-
- if ($type == self::FROM && $lastFromCorrelationName == null) {
- $lastFromCorrelationName = true;
- }
- $this->_tableCols($correlationName, $cols, $lastFromCorrelationName);
- return $this;
- }
-
- private function _uniqueCorrelation($name)
- {
- if (is_array($name)) {
- $c = end($name);
- }
- else {
-
- $dot = strrpos($name, '.');
- $c = ($dot === false) ? $name : substr($name, $dot + 1);
- }
- for ($i = 2; array_key_exists($c, $this->_parts[self::FROM]); ++$i) {
- $c = $name . '_' . (string)$i;
- }
- return $c;
- }
-
- protected function _tableCols($correlationName, $cols, $afterCorrelationName = null)
- {
- if (!is_array($cols)) {
- $cols = array($cols);
- }
- if ($correlationName == null) {
- $correlationName = '';
- }
- $columnValues = array();
- foreach (array_filter($cols) as $alias => $col) {
- $currentCorrelationName = $correlationName;
- if (is_string($col)) {
-
- if (preg_match('/^(.+)\s+' . self::SQL_AS . '\s+(.+)$/i', $col, $m)) {
- $col = $m[1];
- $alias = $m[2];
- }
-
- if (preg_match('/\(.*\)/', $col)) {
- $col = new Expr($col);
- }
- elseif (preg_match('/(.+)\.(.+)/', $col, $m)) {
- $currentCorrelationName = $m[1];
- $col = $m[2];
- }
- }
- $columnValues[] = array($currentCorrelationName, $col, is_string($alias) ? $alias : null);
- }
- if ($columnValues) {
-
- if ($afterCorrelationName === true || is_string($afterCorrelationName)) {
- $tmpColumns = $this->_parts[self::COLUMNS];
- $this->_parts[self::COLUMNS] = array();
- }
- else {
- $tmpColumns = array();
- }
-
- if (is_string($afterCorrelationName)) {
- while ($tmpColumns) {
- $this->_parts[self::COLUMNS][] = $currentColumn = array_shift($tmpColumns);
- if ($currentColumn[0] == $afterCorrelationName) {
- break;
- }
- }
- }
-
- foreach ($columnValues as $columnValue) {
- array_push($this->_parts[self::COLUMNS], $columnValue);
- }
-
- while ($tmpColumns) {
- array_push($this->_parts[self::COLUMNS], array_shift($tmpColumns));
- }
- }
- }
-
- protected function _where($condition, $value = null, $type = null, $bool = true)
- {
- if (count($this->_parts[self::UNION])) {
- throw new \InvalidArgumentException(
- sprintf("Invalid use of where clause with %s", self::SQL_UNION));
- }
- if ($value !== null) {
- $condition = $this->_adapter->quoteInto($condition, $value, $type);
- }
- $cond = "";
- if ($this->_parts[self::WHERE]) {
- if ($bool === true) {
- $cond = self::SQL_AND . ' ';
- }
- else {
- $cond = self::SQL_OR . ' ';
- }
- }
- if ($condition !== null) {
- return $cond . "($condition)";
- }
- return null;
- }
-
- protected function _getDummyTable()
- {
- return array();
- }
-
- protected function _getQuotedSchema($schema = null)
- {
- if ($schema === null) {
- return null;
- }
- return $this->_adapter->quoteIdentifier($schema, true) . '.';
- }
-
- protected function _getQuotedTable($tableName, $correlationName = null)
- {
- return $this->_adapter->quoteTableAs($tableName, $correlationName, true);
- }
-
- protected function _renderDistinct($sql)
- {
- if ($this->_parts[self::DISTINCT]) {
- $sql .= ' ' . self::SQL_DISTINCT;
- }
- return $sql;
- }
-
- protected function _renderColumns($sql)
- {
- if (!count($this->_parts[self::COLUMNS])) {
- return null;
- }
- $columns = array();
- foreach ($this->_parts[self::COLUMNS] as $columnEntry) {
- list($correlationName, $column, $alias) = $columnEntry;
- if ($column instanceof Expr) {
- $columns[] = $this->_adapter->quoteColumnAs($column, $alias, true);
- }
- else {
- if ($column == self::SQL_WILDCARD) {
- $column = new Expr(self::SQL_WILDCARD);
- $alias = null;
- }
- if (empty($correlationName)) {
- $columns[] = $this->_adapter->quoteColumnAs($column, $alias, true);
- }
- else {
- $columns[] = $this->_adapter->quoteColumnAs(array($correlationName, $column), $alias, true);
- }
- }
- }
- return $sql . ' ' . implode(', ', $columns);
- }
-
- protected function _renderFrom($sql)
- {
-
- if (empty($this->_parts[self::FROM])) {
- $this->_parts[self::FROM] = $this->_getDummyTable();
- }
- $from = array();
- foreach ($this->_parts[self::FROM] as $correlationName => $table) {
- $tmp = '';
- $joinType = ($table['joinType'] == self::FROM) ? self::INNER_JOIN : $table['joinType'];
-
- if (!empty($from)) {
- $tmp .= ' ' . strtoupper($joinType) . ' ';
- }
- $tmp .= $this->_getQuotedSchema($table['schema']);
- $tmp .= $this->_getQuotedTable($table['tableName'], $correlationName);
-
- if (!empty($from) && !empty($table['joinCondition'])) {
- $tmp .= ' ' . self::SQL_ON . ' ' . $table['joinCondition'];
- }
-
- $from[] = $tmp;
- }
-
- if (!empty($from)) {
- $sql .= ' ' . self::SQL_FROM . ' ' . implode("\n", $from);
- }
- return $sql;
- }
-
- protected function _renderUnion($sql)
- {
- if ($this->_parts[self::UNION]) {
- foreach ($this->_parts[self::UNION] as $union) {
- list($target, $type) = $union;
- if ($target instanceof Select) {
- $target = $target->assemble();
- }
- $sql .= ' ' . $type . ' ' . $target;
- }
- }
- return $sql;
- }
-
- protected function _renderWhere($sql)
- {
- if ($this->_parts[self::FROM] && $this->_parts[self::WHERE]) {
- $sql .= ' ' . self::SQL_WHERE . ' ' . implode(' ', $this->_parts[self::WHERE]);
- }
- return $sql;
- }
-
- protected function _renderGroup($sql)
- {
- if ($this->_parts[self::FROM] && $this->_parts[self::GROUP]) {
- $group = array();
- foreach ($this->_parts[self::GROUP] as $term) {
- $group[] = $this->_adapter->quoteIdentifier($term, true);
- }
- $sql .= ' ' . self::SQL_GROUP_BY . ' ' . implode(",\n\t", $group);
- }
- return $sql;
- }
-
- protected function _renderHaving($sql)
- {
- if ($this->_parts[self::FROM] && $this->_parts[self::HAVING]) {
- $sql .= ' ' . self::SQL_HAVING . ' ' . implode(' ', $this->_parts[self::HAVING]);
- }
- return $sql;
- }
-
- protected function _renderOrder($sql)
- {
- if ($this->_parts[self::ORDER]) {
- $order = array();
- foreach ($this->_parts[self::ORDER] as $term) {
- if (is_array($term)) {
- if (is_numeric($term[0]) && strval(intval($term[0])) == $term[0]) {
- $order[] = (int)trim($term[0]) . ' ' . $term[1];
- }
- else {
- $order[] = $this->_adapter->quoteIdentifier($term[0], true) . ' ' . $term[1];
- }
- }
- else if (is_numeric($term) && strval(intval($term)) == $term) {
- $order[] = (int)trim($term);
- }
- else {
- $order[] = $this->_adapter->quoteIdentifier($term, true);
- }
- }
- $sql .= ' ' . self::SQL_ORDER_BY . ' ' . implode(', ', $order);
- }
- return $sql;
- }
-
- protected function _renderLimitoffset($sql)
- {
- $count = 0;
- $offset = 0;
- if (!empty($this->_parts[self::LIMIT_OFFSET])) {
- $offset = (int)$this->_parts[self::LIMIT_OFFSET];
- $count = PHP_INT_MAX;
- }
- if (!empty($this->_parts[self::LIMIT_COUNT])) {
- $count = (int)$this->_parts[self::LIMIT_COUNT];
- }
-
- if ($count > 0) {
- $sql = trim($this->_adapter->limit($sql, $count, $offset));
- }
- return $sql;
- }
-
- protected function _renderForupdate($sql)
- {
- if ($this->_parts[self::FOR_UPDATE]) {
- $sql .= ' ' . self::SQL_FOR_UPDATE;
- }
- return $sql;
- }
-
- public function __toString()
- {
- try {
- $sql = $this->assemble();
- } catch (Exception $e) {
- trigger_error($e->getMessage(), E_USER_WARNING);
- $sql = '';
- }
- return (string)$sql;
- }
- }
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