@Script

Command method extension

Allows you to write small scripts in sql, javascript or any other scripting language.

For example:

@Script("begin" +
  "let account = create vertex Account set name = :name" +
  "let city = select from City where name = :city" +
  "let edge = create edge Lives from $account to $city" +
  "commit retry 100" +
  "return $edge")
Edge linkCity(@Param("name") String name, @Param("city") String city)

By default SQL language used for commands.

Example of javascript command:

@Script(language = "javascript", value =
 "for( i = 0; i < 1000; i++ ){" +
     "db.command('insert into Model(name) values (\"test'+i+'\")');" +
 "}")
void jsScript()

Note that in some cases script allows you to avoid OConcurrentModificationException:

@Script("begin" +
  "update Model set name = :0" +
  "commit")
void update(String name)

This may be not the best way in all cases, but it works (due to implementation specifics simple query may fail in concurrent cases). Also, note as positional parameter used as named. Script doesn't work with positional parameters, but it works like this.

Internally OCommandScript used.