Enum GValue

pub enum GValue {
    Null,
    Vertex(Vertex),
    Edge(Edge),
    VertexProperty(VertexProperty),
    Property(Property),
    Uuid(Uuid),
    Int32(i32),
    Int64(i64),
    Float(f32),
    Double(f64),
    Date(DateTime<Utc>),
    List(List),
    Set(Set),
    Map(Map),
    Token(Token),
    String(String),
    Path(Path),
    TraversalMetrics(TraversalMetrics),
    Metric(Metric),
    TraversalExplanation(TraversalExplanation),
    IntermediateRepr(IntermediateRepr),
    P(P),
    T(T),
    Bytecode(Bytecode),
    Traverser(Traverser),
    Scope(Scope),
    Order(Order),
    Bool(bool),
    TextP(TextP),
    Pop(Pop),
    Cardinality(Cardinality),
}

Represent possible values coming from the Gremlin Server

Variants

Null

Vertex(Vertex)

Edge(Edge)

VertexProperty(VertexProperty)

Property(Property)

Uuid(Uuid)

Int32(i32)

Int64(i64)

Float(f32)

Double(f64)

Date(DateTime<Utc>)

List(List)

Set(Set)

Map(Map)

Token(Token)

String(String)

Path(Path)

TraversalMetrics(TraversalMetrics)

Metric(Metric)

TraversalExplanation(TraversalExplanation)

IntermediateRepr(IntermediateRepr)

P(P)

T(T)

Bytecode(Bytecode)

Traverser(Traverser)

Scope(Scope)

Order(Order)

Bool(bool)

TextP(TextP)

Pop(Pop)

Cardinality(Cardinality)

Implementations

impl GValue

pub fn take<T>(self) -> GremlinResult<T>

where T: FromGValue,

Examples found in repository

examples/path.rs (line 9)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = GremlinClient::connect("localhost")?;

    let results = client
        .execute("g.V(param).outE().inV().path()", &[("param", &1)])?
        .filter_map(Result::ok)
        .map(|f| f.take::<Path>())
        .collect::<Result<Vec<Path>, _>>()?;

    println!("{:#?}", results);

    Ok(())
}

examples/multithread.rs (line 12)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = GremlinClient::connect("localhost")?;

    let c = client.clone();

    let result = thread::spawn(move || {
        c.execute("g.V(param)", &[("param", &1)])?
            .filter_map(Result::ok)
            .map(|f| f.take::<Vertex>())
            .collect::<Result<Vec<Vertex>, _>>()
    });

    println!("{:?}", result.join());

    Ok(())
}

examples/vertex.rs (line 9)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = GremlinClient::connect("localhost")?;

    let results = client
        .execute("g.V(param)", &[("param", &1)])?
        .filter_map(Result::ok)
        .map(|f| f.take::<Vertex>())
        .collect::<Result<Vec<Vertex>, _>>()?;

    println!("Vertex count: {}", results.len());

    let vertex = &results[0];

    println!(
        "Vertex with id: [{}] and label: [{}]",
        vertex.id().get::<i64>()?,
        vertex.label()
    );

    Ok(())
}

examples/connection_options.rs (line 16)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = GremlinClient::connect(
        ConnectionOptions::builder()
            .host("localhost")
            .port(8182)
            .pool_size(1)
            .credentials("stephen", "password")
            .build(),
    )?;

    let results = client
        .execute("g.V(param)", &[("param", &1)])?
        .filter_map(Result::ok)
        .map(|f| f.take::<Vertex>())
        .collect::<Result<Vec<Vertex>, _>>()?;

    println!("{:?}", results);

    Ok(())
}

examples/edge_properties.rs (line 9)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = GremlinClient::connect("localhost")?;

    let results = client
        .execute("g.V(param).outE().properties()", &[("param", &1)])?
        .filter_map(Result::ok)
        .map(|f| f.take::<Property>())
        .collect::<Result<Vec<Property>, _>>()?;

    println!("{:?}", results);

    let results = client
        .execute("g.V(param).outE().propertyMap()", &[("param", &1)])?
        .filter_map(Result::ok)
        .map(|f| f.take::<Map>())
        .collect::<Result<Vec<Map>, _>>()?;

    println!("{:?}", results);

    Ok(())
}

examples/edge.rs (line 10)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = GremlinClient::connect("localhost")?;

    // Find outgoing edges for V[1]
    let results = client
        .execute("g.V(param).outE()", &[("param", &1)])?
        .filter_map(Result::ok)
        .map(|f| f.take::<Edge>())
        .collect::<Result<Vec<Edge>, _>>()?;

    println!("Edges count {}", results.len());

    let first = &results[0];

    println!(
        "Edge with id: [{}] and label: [{}] from: [{}] to: [{}]",
        first.id().get::<i32>()?,
        first.label(),
        first.out_v().id().get::<i64>()?,
        first.in_v().id().get::<i64>()?
    );

    Ok(())
}

Additional examples can be found in:

• examples/vertex_properties.rs

pub fn get<'a, T>(&'a self) -> GremlinResult<&'a T>

where T: BorrowFromGValue,

Examples found in repository

examples/vertex_properties.rs (line 22)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = GremlinClient::connect("localhost")?;

    let results = client
        .execute("g.V(param).properties()", &[("param", &1)])?
        .filter_map(Result::ok)
        .map(|f| f.take::<VertexProperty>())
        .collect::<Result<Vec<VertexProperty>, _>>()?;

    println!("{:?}", results[0].get::<String>()?);

    let results = client
        .execute("g.V(param).propertyMap()", &[("param", &1)])?
        .filter_map(Result::ok)
        .map(|f| f.take::<Map>())
        .collect::<Result<Vec<Map>, _>>()?;

    println!(
        "{:?}",
        results[0]["name"].get::<List>()?[0]
            .get::<VertexProperty>()?
            .get::<String>()?
    );

    Ok(())
}

examples/traversal_complex.rs (line 26)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = GremlinClient::connect("localhost")?;

    let g = traversal().with_remote(client);

    create_graph(&g)?;

    let result = g
        .v(())
        .has_label("complex_vertex")
        .has(("name", "test1"))
        .out("complex_label")
        .out("complex_label")
        .value_map(())
        .next()?
        .expect("no vertices found");

    println!(
        "Found vertex with name {:?}",
        result["name"].get::<List>().unwrap()[0]
    );

    let results = g
        .v(())
        .has_label("complex_vertex")
        .has(("number", P::gt(3)))
        .to_list()?;

    println!(
        "Found {} vertices with number greater than 3",
        results.len()
    );

    let results = g
        .v(())
        .has_label("complex_vertex")
        .has(("number", P::within((3, 6))))
        .to_list()?;

    println!("Found {} vertices with number 3 or 6", results.len());

    let results = g
        .v(())
        .has_label("complex_vertex")
        .where_(__.out("complex_label").count().is(P::gte(1)))
        .to_list()?;

    println!(
        "Found {} vertices with 1 or more connected edges with label complex_label",
        results.len()
    );

    Ok(())
}

Trait Implementations

impl Clone for GValue

fn clone(&self) -> GValue

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for GValue

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

Formats the value using the given formatter.

impl From<&String> for GValue

fn from(val: &String) -> Self

Converts to this type from the input type.

impl From<&Vertex> for GValue

fn from(val: &Vertex) -> Self

Converts to this type from the input type.

impl<'a> From<&'a str> for GValue

fn from(val: &'a str) -> Self

Converts to this type from the input type.

impl From<BTreeMap<String, GValue>> for GValue

fn from(val: BTreeMap<String, GValue>) -> Self

Converts to this type from the input type.

impl From<Bytecode> for GValue

fn from(val: Bytecode) -> GValue

Converts to this type from the input type.

impl From<Cardinality> for GValue

fn from(val: Cardinality) -> GValue

Converts to this type from the input type.

impl From<DateTime<Utc>> for GValue

fn from(val: DateTime<Utc>) -> Self

Converts to this type from the input type.

impl From<Edge> for GValue

fn from(val: Edge) -> Self

Converts to this type from the input type.

impl<A, B> From<Either2<A, B>> for GValue

where A: Into<GValue>, B: Into<GValue>,

fn from(val: Either2<A, B>) -> Self

Converts to this type from the input type.

impl From<GKey> for GValue

fn from(val: GKey) -> Self

Converts to this type from the input type.

impl From<GValue> for Vec<GValue>

fn from(val: GValue) -> Self

Converts to this type from the input type.

impl From<GValue> for VecDeque<GValue>

fn from(val: GValue) -> Self

Converts to this type from the input type.

impl From<HashMap<GKey, GValue>> for GValue

fn from(val: HashMap<GKey, GValue>) -> Self

Converts to this type from the input type.

impl From<HashMap<String, GValue>> for GValue

fn from(val: HashMap<String, GValue>) -> Self

Converts to this type from the input type.

impl From<Metric> for GValue

fn from(val: Metric) -> Self

Converts to this type from the input type.

impl From<Order> for GValue

fn from(val: Order) -> Self

Converts to this type from the input type.

impl From<P> for GValue

fn from(val: P) -> GValue

Converts to this type from the input type.

impl From<Path> for GValue

fn from(val: Path) -> Self

Converts to this type from the input type.

impl From<Property> for GValue

fn from(val: Property) -> Self

Converts to this type from the input type.

impl From<Scope> for GValue

fn from(val: Scope) -> Self

Converts to this type from the input type.

impl From<String> for GValue

fn from(val: String) -> Self

Converts to this type from the input type.

impl From<T> for GValue

fn from(val: T) -> GValue

Converts to this type from the input type.

impl From<TextP> for GValue

fn from(val: TextP) -> GValue

Converts to this type from the input type.

impl From<Token> for GValue

fn from(val: Token) -> Self

Converts to this type from the input type.

impl From<TraversalExplanation> for GValue

fn from(val: TraversalExplanation) -> Self

Converts to this type from the input type.

impl From<TraversalMetrics> for GValue

fn from(val: TraversalMetrics) -> Self

Converts to this type from the input type.

impl From<Traverser> for GValue

fn from(val: Traverser) -> Self

Converts to this type from the input type.

impl From<Uuid> for GValue

fn from(val: Uuid) -> GValue

Converts to this type from the input type.

impl From<Vec<GValue>> for GValue

fn from(val: Vec<GValue>) -> Self

Converts to this type from the input type.

impl From<Vertex> for GValue

fn from(val: Vertex) -> Self

Converts to this type from the input type.

impl From<VertexProperty> for GValue

fn from(val: VertexProperty) -> Self

Converts to this type from the input type.

impl From<bool> for GValue

fn from(val: bool) -> GValue

Converts to this type from the input type.

impl From<f32> for GValue

fn from(val: f32) -> Self

Converts to this type from the input type.

impl From<f64> for GValue

fn from(val: f64) -> Self

Converts to this type from the input type.

impl From<i32> for GValue

fn from(val: i32) -> Self

Converts to this type from the input type.

impl From<i64> for GValue

fn from(val: i64) -> Self

Converts to this type from the input type.

impl PartialEq for GValue

fn eq(&self, other: &GValue) -> 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 TryFrom<&GValue> for HashSet<DateTime<Utc>>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: &GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<&GValue> for HashSet<String>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: &GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<&GValue> for HashSet<Uuid>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: &GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<&GValue> for HashSet<bool>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: &GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<&GValue> for HashSet<i32>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: &GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<&GValue> for HashSet<i64>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: &GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<&GValue> for Vec<DateTime<Utc>>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: &GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<&GValue> for Vec<String>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: &GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<&GValue> for Vec<Uuid>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: &GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<&GValue> for Vec<bool>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: &GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<&GValue> for Vec<f32>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: &GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<&GValue> for Vec<f64>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: &GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<&GValue> for Vec<i32>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: &GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<&GValue> for Vec<i64>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: &GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for BTreeMap<String, GValue>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for DateTime<Utc>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for HashMap<GKey, GValue>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for HashMap<String, GValue>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for HashSet<DateTime<Utc>>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for HashSet<String>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for HashSet<Uuid>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for HashSet<bool>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for HashSet<i32>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for HashSet<i64>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for Option<DateTime<Utc>>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for Option<String>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for Option<Uuid>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for Option<bool>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for Option<f32>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for Option<f64>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for Option<i32>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for Option<i64>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for String

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for Uuid

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for Vec<DateTime<Utc>>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for Vec<String>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for Vec<Uuid>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for Vec<bool>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for Vec<f32>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for Vec<f64>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for Vec<i32>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for Vec<i64>

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for bool

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for f32

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for f64

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for i32

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl TryFrom<GValue> for i64

type Error = GremlinError

The type returned in the event of a conversion error.

fn try_from(value: GValue) -> GremlinResult<Self>

Performs the conversion.

impl StructuralPartialEq for GValue