Struct VersionInfo 

pub struct VersionInfo {
    pub saved_by: Option<Generation>,
    pub created_by: Option<Generation>,
    pub resaved: bool,
    pub format_level: Option<u32>,
    pub locking_features: Vec<String>,
    pub needs_format_level: Option<u32>,
    pub unknown_labels: Vec<String>,
    pub alternative_lock_columns: bool,
    pub sqlite_version: Option<u32>,
}

What a file tells about the CSP versions that saved it.

Fields

saved_by: Option<Generation>

Newest generation whose labels are registered (the last saver, at least).

created_by: Option<Generation>

Generation of the first block of ParamScheme rows (the creator). None when that block has no marker, or when a CSP that rewrites the registry saved the file again (resaved and the creator is lost).

resaved: bool

Whether the file was made by an older CSP and saved again by a newer one: rows appended after the first block, or a label the saving generation no longer registers.

format_level: Option<u32>

Highest N of the registered Layer.Has1_0_N columns (the format level of the saving CSP), if any.

locking_features: Vec<String>

Columns with lock type 4 and no link whose value is set in some row: a CSP that does not know such a column locks the scope its registration names (the canvas for scope 2), or the layer when the alternative lock is 1 (checked in CSP 5.1.4).

needs_format_level: Option<u32>

Highest N among set Has1_0_N columns: CSP needs format level N or newer to edit the file without a lock.

unknown_labels: Vec<String>

Registered labels this library does not know (a newer CSP).

alternative_lock_columns: bool

Whether ParamScheme has the AlternativeLock* columns (since 2.x).

sqlite_version: Option<u32>

SQLITE_VERSION_NUMBER of the library that last wrote the database.

Implementations

impl VersionInfo

pub fn read(connection: &Connection, image: Option<&[u8]>) -> Result<Self>

Read the version facts of an open database. image is the raw SQLite database (for the writer’s SQLite version), when available.

Trait Implementations

impl Clone for VersionInfo

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for VersionInfo

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for VersionInfo

impl PartialEq for VersionInfo

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for VersionInfo

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for VersionInfo