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QueryBuilder.php
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QueryBuilder.php
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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace edgardmessias\db\firebird;
/**
*
* @author Edgard Lorraine Messias <edgardmessias@gmail.com>
* @since 2.0
*/
class QueryBuilder extends \yii\db\QueryBuilder
{
/**
* @var array mapping from abstract column types (keys) to physical column types (values).
*/
public $typeMap = [
Schema::TYPE_PK => 'integer NOT NULL PRIMARY KEY',
Schema::TYPE_BIGPK => 'bigint NOT NULL PRIMARY KEY',
Schema::TYPE_STRING => 'varchar(255)',
Schema::TYPE_TEXT => 'blob sub_type text',
Schema::TYPE_SMALLINT => 'smallint',
Schema::TYPE_INTEGER => 'integer',
Schema::TYPE_BIGINT => 'bigint',
Schema::TYPE_FLOAT => 'float',
Schema::TYPE_DOUBLE => 'double precision',
Schema::TYPE_DECIMAL => 'numeric(10,0)',
Schema::TYPE_DATETIME => 'timestamp',
Schema::TYPE_TIMESTAMP => 'timestamp',
Schema::TYPE_TIME => 'time',
Schema::TYPE_DATE => 'date',
Schema::TYPE_BINARY => 'blob',
Schema::TYPE_BOOLEAN => 'smallint',
Schema::TYPE_MONEY => 'numeric(18,4)',
];
/**
* @inheritdoc
*/
public function buildSelect($columns, &$params, $distinct = false, $selectOption = null)
{
if (is_array($columns)) {
foreach ($columns as $i => $column) {
if (!is_string($column)) {
continue;
}
$matches = [];
if (preg_match("/^(COUNT|SUM|AVG|MIN|MAX)\((\w+|\*)\)$/i", $column, $matches)) {
$function = $matches[1];
$alias = $matches[2] != '*' ? $matches[2] : 'ALL';
$columns[$i] = "{$column} AS {$function}_{$alias}";
}
}
}
return parent::buildSelect($columns, $params, $distinct, $selectOption);
}
/**
* @inheritdoc
*/
protected function buildCompositeInCondition($operator, $columns, $values, &$params)
{
$quotedColumns = [];
foreach ($columns as $i => $column) {
$quotedColumns[$i] = strpos($column, '(') === false ? $this->db->quoteColumnName($column) : $column;
}
$vss = [];
foreach ($values as $value) {
$vs = [];
foreach ($columns as $i => $column) {
if (isset($value[$column])) {
$phName = self::PARAM_PREFIX . count($params);
$params[$phName] = $value[$column];
$vs[] = $quotedColumns[$i] . ($operator === 'IN' ? ' = ' : ' != ') . $phName;
} else {
$vs[] = $quotedColumns[$i] . ($operator === 'IN' ? ' IS' : ' IS NOT') . ' NULL';
}
}
$vss[] = '(' . implode($operator === 'IN' ? ' AND ' : ' OR ', $vs) . ')';
}
return '(' . implode($operator === 'IN' ? ' OR ' : ' AND ', $vss) . ')';
}
/**
* @inheritdoc
*/
public function buildOrderByAndLimit($sql, $orderBy, $limit, $offset)
{
$orderBy = $this->buildOrderBy($orderBy);
if ($orderBy !== '') {
$sql .= $this->separator . $orderBy;
}
$limit = $limit !== null ? intval($limit) : -1;
$offset = $offset !== null ? intval($offset) : -1;
// If ignoring both params then do nothing
if ($offset < 0 && $limit < 0) {
return $sql;
}
// If we are ignoring limit then return full result set starting
// from $offset. In Firebird this can only be done with SKIP
if ($offset >= 0 && $limit < 0) {
$count = 1; //Only do it once
$sql = preg_replace('/^SELECT /i', 'SELECT SKIP ' . (int) $offset . ' ', $sql, $count);
return $sql;
}
// If we are ignoring $offset then return $limit rows.
// ie, return the first $limit rows in the set.
if ($offset < 0 && $limit >= 0) {
$rows = $limit;
$sql .= ' ROWS ' . (int) $rows;
return $sql;
}
// Otherwise apply the params and return the amended sql.
if ($offset >= 0 && $limit >= 0) {
// calculate $rows for ROWS...
$rows = $offset + 1;
$sql .= ' ROWS ' . (int) $rows;
// calculate $to for TO...
$to = $offset + $limit;
$sql .= ' TO ' . (int) $to;
return $sql;
}
// If we have fallen through the cracks then just pass
// the sql back.
return $sql;
}
/**
* @inheritdoc
*/
public function insert($table, $columns, &$params)
{
$schema = $this->db->getSchema();
if (($tableSchema = $schema->getTableSchema($table)) !== null) {
$columnSchemas = $tableSchema->columns;
} else {
$columnSchemas = [];
}
foreach ($columns as $name => $value) {
if (in_array($columnSchemas[$name]->type, [Schema::TYPE_TEXT, Schema::TYPE_BINARY])) {
$columns[$name] = [$value, 'blob'];
}
}
return parent::insert($table, $columns, $params);
}
/**
* @inheritdoc
*/
public function update($table, $columns, $condition, &$params)
{
$schema = $this->db->getSchema();
if (($tableSchema = $schema->getTableSchema($table)) !== null) {
$columnSchemas = $tableSchema->columns;
} else {
$columnSchemas = [];
}
foreach ($columns as $name => $value) {
if (in_array($columnSchemas[$name]->type, [Schema::TYPE_TEXT, Schema::TYPE_BINARY])) {
$columns[$name] = [$value, 'blob'];
}
}
return parent::update($table, $columns, $condition, $params);
}
/**
* @inheritdoc
*/
public function batchInsert($table, $columns, $rows)
{
$schema = $this->db->getSchema();
if (($tableSchema = $schema->getTableSchema($table)) !== null) {
$columnSchemas = $tableSchema->columns;
} else {
$columnSchemas = [];
}
$values = [];
foreach ($rows as $row) {
$vs = [];
foreach ($row as $i => $value) {
if (isset($columns[$i], $columnSchemas[$columns[$i]]) && !is_array($value)) {
$value = $columnSchemas[$columns[$i]]->dbTypecast($value);
}
if (is_string($value)) {
$value = $schema->quoteValue($value);
} elseif ($value === false) {
$value = 0;
} elseif ($value === null) {
$value = 'NULL';
}
$vs[] = $value;
}
$values[] = 'INSERT INTO ' . $schema->quoteTableName($table)
. ' (' . implode(', ', $columns) . ') VALUES (' . implode(', ', $vs) . ');';
}
foreach ($columns as $i => $name) {
$columns[$i] = $schema->quoteColumnName($name);
}
return 'EXECUTE block AS BEGIN ' . implode(' ', $values) . ' END;';
}
/**
* @inheritdoc
*/
public function renameTable($oldName, $newName)
{
throw new \yii\base\NotSupportedException($this->db->getDriverName() . ' does not support rename table.');
}
/**
* @inheritdoc
*/
public function truncateTable($table)
{
return "DELETE FROM " . $this->db->quoteTableName($table);
}
/**
* @inheritdoc
*/
public function dropColumn($table, $column)
{
return "ALTER TABLE " . $this->db->quoteTableName($table)
. " DROP " . $this->db->quoteColumnName($column);
}
/**
* @inheritdoc
*/
public function renameColumn($table, $oldName, $newName)
{
return "ALTER TABLE " . $this->db->quoteTableName($table)
. " ALTER " . $this->db->quoteColumnName($oldName)
. " TO " . $this->db->quoteColumnName($newName);
}
/**
* @inheritdoc
*/
public function alterColumn($table, $column, $type)
{
$schema = $this->db->getSchema();
$tableSchema = $schema->getTableSchema($table);
$columnSchema = $tableSchema->getColumn($column);
$allowNullNewType = !preg_match("/not +null/i", $type);
$type = preg_replace("/ +(not)? *null/i", "", $type);
$hasType = false;
$matches = [];
if (isset($this->typeMap[$type])) {
$hasType = true;
} elseif (preg_match('/^(\w+)[\( ]/', $type, $matches)) {
if (isset($this->typeMap[$matches[1]])) {
$hasType = true;
}
}
$baseSql = 'ALTER TABLE ' . $this->db->quoteTableName($table)
. ' ALTER '. $this->db->quoteColumnName($column)
. (($hasType)? ' TYPE ': ' ') . $this->getColumnType($type);
if ($columnSchema->allowNull == $allowNullNewType) {
return $baseSql;
} else {
$sql = 'EXECUTE BLOCK AS BEGIN'
. ' EXECUTE STATEMENT ' . $this->db->quoteValue($baseSql) . ';'
. ' UPDATE RDB$RELATION_FIELDS SET RDB$NULL_FLAG = ' . ($allowNullNewType ? 'NULL' : '1')
. ' WHERE UPPER(RDB$FIELD_NAME) = UPPER(\'' . $column . '\') AND UPPER(RDB$RELATION_NAME) = UPPER(\'' . $table . '\');';
/**
* In any case (whichever option you choose), make sure that the column doesn't have any NULLs.
* Firebird will not check it for you. Later when you backup the database, everything is fine,
* but restore will fail as the NOT NULL column has NULLs in it. To be safe, each time you change from NULL to NOT NULL.
*/
if (!$allowNullNewType) {
$sql .= ' UPDATE ' . $this->db->quoteTableName($table) . ' SET ' . $this->db->quoteColumnName($column) . ' = 0'
. ' WHERE ' . $this->db->quoteColumnName($column) . ' IS NULL;';
}
$sql .= ' END';
return $sql;
}
}
/**
* @inheritdoc
*/
public function dropIndex($name, $table)
{
return 'DROP INDEX ' . $this->db->quoteTableName($name);
}
/**
* @inheritdoc
*/
public function resetSequence($table, $value = null)
{
$tableSchema = $this->db->getTableSchema($table);
if ($tableSchema === null) {
throw new InvalidParamException("Table not found: $table");
}
if ($tableSchema->sequenceName === null) {
throw new InvalidParamException("There is not sequence associated with table '$table'.");
}
if ($value !== null) {
$value = (int) $value;
} else {
// use master connection to get the biggest PK value
$value = $this->db->useMaster(function (Connection $db) use ($tableSchema) {
$key = reset($tableSchema->primaryKey);
return $db->createCommand("SELECT MAX({$this->db->quoteColumnName($key)}) FROM {$this->db->quoteTableName($tableSchema->name)}")->queryScalar();
}) + 1;
}
return "ALTER SEQUENCE {$this->db->quoteColumnName($tableSchema->sequenceName)} RESTART WITH $value";
}
/**
* @inheritdoc
*/
public function createTable($table, $columns, $options = null)
{
$sql = parent::createTable($table, $columns, $options);
foreach ($columns as $name => $type) {
if (!is_string($name)) {
continue;
}
if (strpos($type, Schema::TYPE_PK) === 0 || strpos($type, Schema::TYPE_BIGPK) === 0) {
$sqlTrigger = <<<SQLTRIGGER
CREATE TRIGGER tr_{$table}_{$name} FOR {$this->db->quoteTableName($table)}
ACTIVE BEFORE INSERT POSITION 0
AS
BEGIN
if (NEW.{$this->db->quoteColumnName($name)} is NULL) then NEW.{$this->db->quoteColumnName($name)} = NEXT VALUE FOR seq_{$table}_{$name};
END
SQLTRIGGER;
$sqlBlock = <<<SQL
EXECUTE block AS
BEGIN
EXECUTE STATEMENT {$this->db->quoteValue($sql)};
EXECUTE STATEMENT {$this->db->quoteValue("CREATE SEQUENCE seq_{$table}_{$name}")};
EXECUTE STATEMENT {$this->db->quoteValue($sqlTrigger)};
END;
SQL;
return $sqlBlock;
}
}
return $sql;
}
/**
* @inheritdoc
*/
public function dropTable($table)
{
$sql = parent::dropTable($table);
$tableSchema = $this->db->getTableSchema($table);
if ($tableSchema === null || $tableSchema->sequenceName === null) {
return $sql;
}
$sqlBlock = <<<SQL
EXECUTE block AS
BEGIN
EXECUTE STATEMENT {$this->db->quoteValue($sql)};
EXECUTE STATEMENT {$this->db->quoteValue("DROP SEQUENCE {$tableSchema->sequenceName}")};
END;
SQL;
return $sqlBlock;
}
}