Class: Swift::DB::Sqlite3::Statement

Inherits:
Object
  • Object
show all
Defined in:
ext/swift/db/sqlite3/statement.c

Instance Method Summary collapse

Constructor Details

#initialize(adapter, sql) ⇒ Object 



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# File 'ext/swift/db/sqlite3/statement.c', line 53

VALUE db_sqlite3_statement_initialize(VALUE self, VALUE adapter, VALUE sql) {
    Statement *s = db_sqlite3_statement_handle(self);

    s->s       = 0;
    s->c       = db_sqlite3_adapter_handle_safe(adapter)->connection;
    s->adapter = adapter;

    if (sqlite3_prepare_v2(s->c, RSTRING_PTR(sql), RSTRING_LEN(sql), &(s->s), 0) != SQLITE_OK)
        rb_raise(eSwiftRuntimeError, "%s\nSQL: %s", sqlite3_errmsg(s->c), RSTRING_PTR(sql));

    return self;
}

Instance Method Details

#execute(*args) ⇒ Object 



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# File 'ext/swift/db/sqlite3/statement.c', line 71

VALUE db_sqlite3_statement_execute(int argc, VALUE *argv, VALUE self) {
    int expect, n;
    VALUE bind, result;

    Statement *s = db_sqlite3_statement_handle_safe(self);

    sqlite3_reset(s->s);
    sqlite3_clear_bindings(s->s);

    rb_scan_args(argc, argv, "00*", &bind);
    expect = sqlite3_bind_parameter_count(s->s);
    if (expect != RARRAY_LEN(bind))
        rb_raise(eSwiftArgumentError, "expected %d bind values got %d", expect, (int)RARRAY_LEN(bind));

    rb_gc_register_address(&bind);
    for (n = 0; n < expect; n++) {
        VALUE value = rb_ary_entry(bind, n);
        if (NIL_P(value))
            sqlite3_bind_null(s->s, n + 1);
        else {
            VALUE text = typecast_to_string(value);
            sqlite3_bind_text(s->s, n + 1, RSTRING_PTR(text), RSTRING_LEN(text), 0);
        }
    }

    result = db_sqlite3_result_allocate(cDSR);
    db_sqlite3_result_initialize(result, self);
    db_sqlite3_result_consume(result);
    rb_gc_unregister_address(&bind);
    return result;
}

#release ⇒ Object 



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# File 'ext/swift/db/sqlite3/statement.c', line 103

VALUE db_sqlite3_statement_release(VALUE self) {
    Statement *s = db_sqlite3_statement_handle_safe(self);
    sqlite3_finalize(s->s);
    s->s = 0;
    return Qtrue;
}