Pre: Remove open_empty.

This was a work-around for Tolstoy, which couldn't gracefully handle
syncing a store with a bootstrap transaction.  Tolstoy now handles
that single transaction, so this is no longer necessary.

src/store.rs

@@ -89,22 +89,6 @@ impl Store {
         })
     }
 
-    /// Returns a totally blank store with no bootstrap schema. Use `open` instead.
-    pub fn open_empty(path: &str) -> Result<Store> {
-        if !path.is_empty() {
-            if Path::new(path).exists() {
-                bail!(MentatError::PathAlreadyExists(path.to_string()));
-            }
-        }
-
-        let mut connection = ::new_connection(path)?;
-        let conn = Conn::empty(&mut connection)?;
-        Ok(Store {
-            conn: conn,
-            sqlite: connection,
-        })
-    }
-
     pub fn transact(&mut self, transaction: &str) -> Result<TxReport> {
         let mut ip = self.begin_transaction()?;
         let report = ip.transact(transaction)?;
@@ -127,28 +111,9 @@ impl Store {
         })
     }
 
-    /// Variant of `open_empty` that allows a key (for encryption/decryption) to
+    /// Change the key for a database that was opened using `open_with_key` (using `PRAGMA
-    /// be supplied. Fails unless linked against sqlcipher (or something else
+    /// rekey`). Fails unless linked against sqlcipher (or something else that supports the Sqlite
-    /// that supports the Sqlite Encryption Extension).
+    /// Encryption Extension).
-    pub fn open_empty_with_key(path: &str, encryption_key: &str) -> Result<Store> {
-        if !path.is_empty() {
-            if Path::new(path).exists() {
-                bail!(MentatError::PathAlreadyExists(path.to_string()));
-            }
-        }
-
-        let mut connection = ::new_connection_with_key(path, encryption_key)?;
-        let conn = Conn::empty(&mut connection)?;
-        Ok(Store {
-            conn: conn,
-            sqlite: connection,
-        })
-    }
-
-    /// Change the key for a database that was opened using `open_with_key` or
-    /// `open_empty_with_key` (using `PRAGMA rekey`). Fails unless linked
-    /// against sqlcipher (or something else that supports the Sqlite Encryption
-    /// Extension).
     pub fn change_encryption_key(&mut self, new_encryption_key: &str) -> Result<()> {
         ::change_encryption_key(&self.sqlite, new_encryption_key)?;
         Ok(())

tools/cli/src/mentat_cli/command_parser.rs

@@ -51,9 +51,7 @@ pub static COMMAND_HELP: &'static str = &"help";
 pub static COMMAND_IMPORT_LONG: &'static str = &"import";
 pub static COMMAND_IMPORT_SHORT: &'static str = &"i";
 pub static COMMAND_OPEN: &'static str = &"open";
-pub static COMMAND_OPEN_EMPTY: &'static str = &"empty";
 pub static COMMAND_OPEN_ENCRYPTED: &'static str = &"open_encrypted";
-pub static COMMAND_OPEN_EMPTY_ENCRYPTED: &'static str = &"empty_encrypted";
 pub static COMMAND_QUERY_LONG: &'static str = &"query";
 pub static COMMAND_QUERY_SHORT: &'static str = &"q";
 pub static COMMAND_QUERY_EXPLAIN_LONG: &'static str = &"explain_query";
@@ -73,9 +71,7 @@ pub enum Command {
     Help(Vec<String>),
     Import(String),
     Open(String),
-    OpenEmpty(String),
     OpenEncrypted(String, String),
-    OpenEmptyEncrypted(String, String),
     Query(String),
     QueryExplain(String),
     QueryPrepared(String),
@@ -105,9 +101,7 @@ impl Command {
             &Command::Help(_) |
             &Command::Import(_) |
             &Command::Open(_) |
-            &Command::OpenEmpty(_) |
             &Command::OpenEncrypted(_, _) |
-            &Command::OpenEmptyEncrypted(_, _) |
             &Command::Timer(_) |
             &Command::Schema |
             &Command::Sync(_)
@@ -128,9 +122,7 @@ impl Command {
             &Command::Exit |
             &Command::Help(_) |
             &Command::Open(_) |
-            &Command::OpenEmpty(_) |
             &Command::OpenEncrypted(_, _) |
-            &Command::OpenEmptyEncrypted(_, _) |
             &Command::QueryExplain(_) |
             &Command::Timer(_) |
             &Command::Schema |
@@ -159,15 +151,9 @@ impl Command {
             &Command::Open(ref args) => {
                 format!(".{} {}", COMMAND_OPEN, args)
             },
-            &Command::OpenEmpty(ref args) => {
-                format!(".{} {}", COMMAND_OPEN_EMPTY, args)
-            },
             &Command::OpenEncrypted(ref db, ref key) => {
                 format!(".{} {} {}", COMMAND_OPEN_ENCRYPTED, db, key)
             },
-            &Command::OpenEmptyEncrypted(ref db, ref key) => {
-                format!(".{} {} {}", COMMAND_OPEN_EMPTY_ENCRYPTED, db, key)
-            },
             &Command::Query(ref args) => {
                 format!(".{} {}", COMMAND_QUERY_LONG, args)
             },
@@ -282,15 +268,9 @@ pub fn command(s: &str) -> Result<Command, Error> {
     let open_parser = opener(COMMAND_OPEN, 1).map(|args_res|
         args_res.map(|args| Command::Open(args[0].clone())));
 
-    let open_empty_parser = opener(COMMAND_OPEN_EMPTY, 1).map(|args_res|
-        args_res.map(|args| Command::OpenEmpty(args[0].clone())));
-
     let open_encrypted_parser = opener(COMMAND_OPEN_ENCRYPTED, 2).map(|args_res|
         args_res.map(|args| Command::OpenEncrypted(args[0].clone(), args[1].clone())));
 
-    let open_empty_encrypted_parser = opener(COMMAND_OPEN_EMPTY_ENCRYPTED, 2).map(|args_res|
-        args_res.map(|args| Command::OpenEmptyEncrypted(args[0].clone(), args[1].clone())));
-
     let query_parser = try(string(COMMAND_QUERY_LONG)).or(try(string(COMMAND_QUERY_SHORT)))
                         .with(edn_arg_parser())
                         .map(|x| {
@@ -340,15 +320,13 @@ pub fn command(s: &str) -> Result<Command, Error> {
 
     spaces()
     .skip(token('.'))
-    .with(choice::<[&mut Parser<Input = _, Output = Result<Command, Error>>; 16], _>
+    .with(choice::<[&mut Parser<Input = _, Output = Result<Command, Error>>; 14], _>
           ([&mut try(help_parser),
             &mut try(import_parser),
             &mut try(timer_parser),
             &mut try(cache_parser),
             &mut try(open_encrypted_parser),
-            &mut try(open_empty_encrypted_parser),
             &mut try(open_parser),
-            &mut try(open_empty_parser),
             &mut try(close_parser),
             &mut try(explain_query_parser),
             &mut try(exit_parser),
@@ -459,19 +437,6 @@ mod tests {
         }
     }
 
-    #[test]
-    fn test_empty_encrypted_parser() {
-        let input = ".empty_encrypted /path/to/my.db hunter2";
-        let cmd = command(&input).expect("Expected empty_encrypted command");
-        match cmd {
-            Command::OpenEmptyEncrypted(path, key) => {
-                assert_eq!(path, "/path/to/my.db".to_string());
-                assert_eq!(key, "hunter2".to_string());
-            },
-            _ => assert!(false)
-        }
-    }
-
     #[test]
     fn test_open_encrypted_parser_missing_key() {
         let input = ".open_encrypted path/to/db.db";
@@ -479,13 +444,6 @@ mod tests {
         assert_eq!(err.to_string(), "Missing required argument");
     }
 
-    #[test]
-    fn test_empty_encrypted_parser_missing_key() {
-        let input = ".empty_encrypted path/to/db.db";
-        let err = command(&input).expect_err("Expected an error");
-        assert_eq!(err.to_string(), "Missing required argument");
-    }
-
     #[test]
     fn test_sync_parser_path_arg() {
         let input = ".sync https://example.com/api/ 316ea470-ce35-4adf-9c61-e0de6e289c59";

tools/cli/src/mentat_cli/repl.rs

@@ -63,7 +63,6 @@ use command_parser::{
     COMMAND_HELP,
     COMMAND_IMPORT_LONG,
     COMMAND_OPEN,
-    COMMAND_OPEN_EMPTY,
     COMMAND_QUERY_LONG,
     COMMAND_QUERY_SHORT,
     COMMAND_QUERY_EXPLAIN_LONG,
@@ -81,7 +80,6 @@ use command_parser::{
 // omit them from help message (since they wouldn't work).
 #[cfg(feature = "sqlcipher")]
 use command_parser::{
-    COMMAND_OPEN_EMPTY_ENCRYPTED,
     COMMAND_OPEN_ENCRYPTED,
 };
 
@@ -107,12 +105,9 @@ lazy_static! {
             (COMMAND_EXIT_SHORT, "Shortcut for `.exit`. Close the current database and exit the REPL."),
 
             (COMMAND_OPEN, "Open a database at path."),
-            (COMMAND_OPEN_EMPTY, "Open an empty database at path."),
 
             #[cfg(feature = "sqlcipher")]
             (COMMAND_OPEN_ENCRYPTED, "Open an encrypted database at path using the provided key."),
-            #[cfg(feature = "sqlcipher")]
-            (COMMAND_OPEN_EMPTY_ENCRYPTED, "Open an empty encrypted database at path using the provided key."),
 
             (COMMAND_SCHEMA, "Output the schema for the current open database."),
 
@@ -306,24 +301,12 @@ impl Repl {
                     Err(e) => eprintln!("{}", e.to_string()),
                 };
             },
-            Command::OpenEmpty(db) => {
-                match self.open_empty(db) {
-                    Ok(_) => println!("Empty database {:?} opened", self.db_name()),
-                    Err(e) => eprintln!("{}", e.to_string()),
-                };
-            },
             Command::OpenEncrypted(db, encryption_key) => {
                 match self.open_with_key(db, &encryption_key) {
                     Ok(_) => println!("Database {:?} opened with key {:?}", self.db_name(), encryption_key),
                     Err(e) => eprintln!("{}", e.to_string()),
                 }
             },
-            Command::OpenEmptyEncrypted(db, encryption_key) => {
-                match self.open_empty_with_key(db, &encryption_key) {
-                    Ok(_) => println!("Empty database {:?} opened with key {:?}", self.db_name(), encryption_key),
-                    Err(e) => eprintln!("{}", e.to_string()),
-                }
-            },
             Command::Query(query) => {
                 self.store
                     .q_once(query.as_str(), None)
@@ -414,30 +397,20 @@ impl Repl {
 
     fn open_common(
         &mut self,
-        empty: bool,
         path: String,
         encryption_key: Option<&str>
     ) -> ::mentat::errors::Result<()> {
         if self.path.is_empty() || path != self.path {
             let next = match encryption_key {
                 #[cfg(not(feature = "sqlcipher"))]
-                Some(_) => return Err(::mentat::MentatError::RusqliteError(".open_encrypted and .empty_encrypted require the sqlcipher Mentat feature".into())),
+                Some(_) => return Err(::mentat::MentatError::RusqliteError(".open_encrypted requires the sqlcipher Mentat feature".into())),
-
                 #[cfg(feature = "sqlcipher")]
                 Some(k) => {
-                    if empty {
-                        Store::open_empty_with_key(path.as_str(), k)?
-                    } else {
                     Store::open_with_key(path.as_str(), k)?
-                    }
                 },
                 _ => {
-                    if empty {
-                        Store::open_empty(path.as_str())?
-                    } else {
                     Store::open(path.as_str())?
                 }
-                }
             };
             self.path = path;
             self.store = next;
@@ -447,22 +420,12 @@ impl Repl {
     }
 
     fn open<T>(&mut self, path: T) -> ::mentat::errors::Result<()> where T: Into<String> {
-        self.open_common(false, path.into(), None)
+        self.open_common(path.into(), None)
-    }
-
-    fn open_empty<T>(&mut self, path: T)
-    -> ::mentat::errors::Result<()> where T: Into<String> {
-        self.open_common(true, path.into(), None)
     }
 
     fn open_with_key<T, U>(&mut self, path: T, encryption_key: U)
     -> ::mentat::errors::Result<()> where T: Into<String>, U: AsRef<str> {
-        self.open_common(false, path.into(), Some(encryption_key.as_ref()))
+        self.open_common(path.into(), Some(encryption_key.as_ref()))
-    }
-
-    fn open_empty_with_key<T, U>(&mut self, path: T, encryption_key: U)
-    -> ::mentat::errors::Result<()> where T: Into<String>, U: AsRef<str> {
-        self.open_common(true, path.into(), Some(encryption_key.as_ref()))
     }
 
     // Close the current store by opening a new in-memory store in its place.