Struct AndCondition 

pub struct AndCondition { /* private fields */ }

Implementations

impl AndCondition

pub fn new(field_name: String, field_value: String) -> Self

Examples found in repository

examples/00_usage.rs (line 82)

fn main() {
    // Specify home location for indexes
    let home = ".store".to_string();
    // Specify index name
    let index_name = "usage".to_string();

    // Prepare builder
    let mut builder = SurferBuilder::default();
    builder.set_home(&home);

    let data = UserInfo::default();
    builder.add_struct(index_name.clone(), &data);

    // Prepare Surf
    let mut surf = Surf::try_from(builder).unwrap();

    // Prepare data to insert & search

    // User 1: John Doe
    let first = "John".to_string();
    let last = "Doe".to_string();
    let age = 20u8;
    let john_doe = UserInfo::new(first, last, age);

    // User 2: Jane Doe
    let first = "Jane".to_string();
    let last = "Doe".to_string();
    let age = 18u8;
    let jane_doe = UserInfo::new(first, last, age);

    // See examples for more options
    let users = vec![john_doe.clone(), jane_doe.clone()];
    let _ = surf.insert(&index_name, &users).unwrap();

    block_thread(1);

    // See examples for more options
    // Similar to SELECT * FROM users WHERE (age = 20 AND last = "Doe") OR (first = "Jane")
    let conditions = vec![
        OrCondition::new(
            // (age = 20 AND last = "Doe")
            vec![
                AndCondition::new("age".to_string(), "20".to_string()),
                AndCondition::new("last".to_string(), "doe".to_string())
            ]),
        OrCondition::new(
            // (first = "Jane")
            vec![
                AndCondition::new("first".to_string(), "jane".to_string())
            ])
    ];

    // Validate John and Jane Doe
    let mut computed = surf.select::<UserInfo>(&index_name, &conditions).unwrap().unwrap();
    let mut expected = vec![john_doe.clone(), jane_doe.clone(), ];
    expected.sort();
    computed.sort();
    assert_eq!(expected, computed);

    // Validated John's record - Alternate shortcut for query using one field only
    let computed = surf.read_all_structs_by_field(&index_name, "age", "20");
    let computed: Vec<UserInfo> = computed.unwrap().unwrap();
    assert_eq!(vec![john_doe], computed);

    // Delete John's record
    let result = surf.delete(&index_name, "age", "20");
    assert!(result.is_ok());

    // John's was removed
    let computed = surf.read_all_structs_by_field(&index_name, "age", "20");
    let computed: Vec<UserInfo> = computed.unwrap().unwrap();
    assert!(computed.is_empty());


    // Clean-up
    let path = surf.which_index(&index_name).unwrap();
    let _ = remove_dir_all(&path);
    let _ = remove_dir_all(&home);
}

pub fn update_field_value(&mut self, field_value: String)

pub fn resolve_field_name(&self) -> &String

pub fn resolve_field_value(&self) -> &String

Trait Implementations

impl Clone for AndCondition

fn clone(&self) -> AndCondition

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AndCondition

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

Formats the value using the given formatter.

impl PartialEq for AndCondition

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for AndCondition

impl StructuralPartialEq for AndCondition