Struct vdb::Entry

pub struct Entry {
    pub name: String,
    pub value: Data,
}

Each RowId has many entries. Comparable to column name+data in relational databases.

Fields

name: String

value: Data

Methods

impl Entry

pub fn new_string(name: &str, value: &str) -> Entry

Shortcut for creating a new Entry with a DbString

pub fn new_i32(name: &str, value: i32) -> Entry

Shortcut for creating a new Entry with a DbI32

pub fn compare(&self, predicate: &Predicate) -> bool

Examples

use vdb::{Entry,Predicate};
let a = Entry::new_string("mundo", "world");

assert_eq!(a.compare(&Predicate::new_equal_string("mundo", "world")), true);
assert_eq!(a.compare(&Predicate::new_contains("mundo", "orl")), true);
assert_eq!(a.compare(&Predicate::new_equal_string("mundo", "World")), false);

pub fn compare_all(entries: &[Entry], predicate: &Predicate) -> bool

pub fn check_by_name(entries: &[Entry], name: &str) -> bool

Return true if there is any entry with the given name

pub fn check_by_value(entries: &[Entry], name: &str, value: &Data) -> bool

Return true if there is any entry with the given name

pub fn get_first_by_name(entries: &[Entry], name: &str) -> Option<Entry>

Return first Entry in a given list that matches name

pub fn get_first_by_name_mut<'a>(
    entries: &'a mut Vec<Entry>,
    name: &str
) -> Option<&'a mut Entry>

Return first Entry in a given list that matches name as mutable reference

Trait Implementations

impl Clone for Entry

fn clone(&self) -> Entry

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialEq<Entry> for Entry

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Eq for Entry

impl Debug for Entry

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

Formats the value using the given formatter.

impl Hash for Entry

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl Serialize for Entry

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

Serialize this value into the given Serde serializer.

impl<'de> Deserialize<'de> for Entry

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.