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- <?php
-
- namespace Illuminate\Database\Query\Grammars;
-
- use Illuminate\Support\Arr;
- use Illuminate\Support\Str;
- use Illuminate\Database\Query\Builder;
-
- class SQLiteGrammar extends Grammar
- {
- /**
- * The components that make up a select clause.
- *
- * @var array
- */
- protected $selectComponents = [
- 'aggregate',
- 'columns',
- 'from',
- 'joins',
- 'wheres',
- 'groups',
- 'havings',
- 'orders',
- 'limit',
- 'offset',
- 'lock',
- ];
-
- /**
- * All of the available clause operators.
- *
- * @var array
- */
- protected $operators = [
- '=', '<', '>', '<=', '>=', '<>', '!=',
- 'like', 'not like', 'ilike',
- '&', '|', '<<', '>>',
- ];
-
- /**
- * Compile a select query into SQL.
- *
- * @param \Illuminate\Database\Query\Builder $query
- * @return string
- */
- public function compileSelect(Builder $query)
- {
- $sql = parent::compileSelect($query);
-
- if ($query->unions) {
- $sql = 'select * from ('.$sql.') '.$this->compileUnions($query);
- }
-
- return $sql;
- }
-
- /**
- * Compile a single union statement.
- *
- * @param array $union
- * @return string
- */
- protected function compileUnion(array $union)
- {
- $conjunction = $union['all'] ? ' union all ' : ' union ';
-
- return $conjunction.'select * from ('.$union['query']->toSql().')';
- }
-
- /**
- * Compile a "where date" clause.
- *
- * @param \Illuminate\Database\Query\Builder $query
- * @param array $where
- * @return string
- */
- protected function whereDate(Builder $query, $where)
- {
- return $this->dateBasedWhere('%Y-%m-%d', $query, $where);
- }
-
- /**
- * Compile a "where day" clause.
- *
- * @param \Illuminate\Database\Query\Builder $query
- * @param array $where
- * @return string
- */
- protected function whereDay(Builder $query, $where)
- {
- return $this->dateBasedWhere('%d', $query, $where);
- }
-
- /**
- * Compile a "where month" clause.
- *
- * @param \Illuminate\Database\Query\Builder $query
- * @param array $where
- * @return string
- */
- protected function whereMonth(Builder $query, $where)
- {
- return $this->dateBasedWhere('%m', $query, $where);
- }
-
- /**
- * Compile a "where year" clause.
- *
- * @param \Illuminate\Database\Query\Builder $query
- * @param array $where
- * @return string
- */
- protected function whereYear(Builder $query, $where)
- {
- return $this->dateBasedWhere('%Y', $query, $where);
- }
-
- /**
- * Compile a "where time" clause.
- *
- * @param \Illuminate\Database\Query\Builder $query
- * @param array $where
- * @return string
- */
- protected function whereTime(Builder $query, $where)
- {
- return $this->dateBasedWhere('%H:%M:%S', $query, $where);
- }
-
- /**
- * Compile a date based where clause.
- *
- * @param string $type
- * @param \Illuminate\Database\Query\Builder $query
- * @param array $where
- * @return string
- */
- protected function dateBasedWhere($type, Builder $query, $where)
- {
- $value = $this->parameter($where['value']);
-
- return "strftime('{$type}', {$this->wrap($where['column'])}) {$where['operator']} cast({$value} as text)";
- }
-
- /**
- * Compile an insert statement into SQL.
- *
- * @param \Illuminate\Database\Query\Builder $query
- * @param array $values
- * @return string
- */
- public function compileInsert(Builder $query, array $values)
- {
- // Essentially we will force every insert to be treated as a batch insert which
- // simply makes creating the SQL easier for us since we can utilize the same
- // basic routine regardless of an amount of records given to us to insert.
- $table = $this->wrapTable($query->from);
-
- if (! is_array(reset($values))) {
- $values = [$values];
- }
-
- // If there is only one record being inserted, we will just use the usual query
- // grammar insert builder because no special syntax is needed for the single
- // row inserts in SQLite. However, if there are multiples, we'll continue.
- if (count($values) === 1) {
- return empty(reset($values))
- ? "insert into $table default values"
- : parent::compileInsert($query, reset($values));
- }
-
- $names = $this->columnize(array_keys(reset($values)));
-
- $columns = [];
-
- // SQLite requires us to build the multi-row insert as a listing of select with
- // unions joining them together. So we'll build out this list of columns and
- // then join them all together with select unions to complete the queries.
- foreach (array_keys(reset($values)) as $column) {
- $columns[] = '? as '.$this->wrap($column);
- }
-
- $columns = array_fill(0, count($values), implode(', ', $columns));
-
- return "insert into $table ($names) select ".implode(' union all select ', $columns);
- }
-
- /**
- * Compile an update statement into SQL.
- *
- * @param \Illuminate\Database\Query\Builder $query
- * @param array $values
- * @return string
- */
- public function compileUpdate(Builder $query, $values)
- {
- $table = $this->wrapTable($query->from);
-
- $columns = collect($values)->map(function ($value, $key) use ($query) {
- return $this->wrap(Str::after($key, $query->from.'.')).' = '.$this->parameter($value);
- })->implode(', ');
-
- if (isset($query->joins) || isset($query->limit)) {
- $selectSql = parent::compileSelect($query->select("{$query->from}.rowid"));
-
- return "update {$table} set $columns where {$this->wrap('rowid')} in ({$selectSql})";
- }
-
- return trim("update {$table} set {$columns} {$this->compileWheres($query)}");
- }
-
- /**
- * Prepare the bindings for an update statement.
- *
- * @param array $bindings
- * @param array $values
- * @return array
- */
- public function prepareBindingsForUpdate(array $bindings, array $values)
- {
- $cleanBindings = Arr::except($bindings, ['select', 'join']);
-
- return array_values(
- array_merge($values, $bindings['join'], Arr::flatten($cleanBindings))
- );
- }
-
- /**
- * Compile a delete statement into SQL.
- *
- * @param \Illuminate\Database\Query\Builder $query
- * @return string
- */
- public function compileDelete(Builder $query)
- {
- if (isset($query->joins) || isset($query->limit)) {
- $selectSql = parent::compileSelect($query->select("{$query->from}.rowid"));
-
- return "delete from {$this->wrapTable($query->from)} where {$this->wrap('rowid')} in ({$selectSql})";
- }
-
- $wheres = is_array($query->wheres) ? $this->compileWheres($query) : '';
-
- return trim("delete from {$this->wrapTable($query->from)} $wheres");
- }
-
- /**
- * Prepare the bindings for a delete statement.
- *
- * @param array $bindings
- * @return array
- */
- public function prepareBindingsForDelete(array $bindings)
- {
- $cleanBindings = Arr::except($bindings, ['select', 'join']);
-
- return array_values(
- array_merge($bindings['join'], Arr::flatten($cleanBindings))
- );
- }
-
- /**
- * Compile a truncate table statement into SQL.
- *
- * @param \Illuminate\Database\Query\Builder $query
- * @return array
- */
- public function compileTruncate(Builder $query)
- {
- return [
- 'delete from sqlite_sequence where name = ?' => [$query->from],
- 'delete from '.$this->wrapTable($query->from) => [],
- ];
- }
- }
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