Struct QueryBuilder 

pub struct QueryBuilder { /* private fields */ }

Query builder for constructing Cypher queries

Implementations

impl QueryBuilder

pub fn new() -> Self

Create a new query builder

pub fn match_(self, pattern: &str) -> Self

Add a MATCH clause

Example

use nexus_sdk::query_builder::QueryBuilder;

let query = QueryBuilder::new()
    .match_("(n:Person)")
    .build();

pub fn create(self, pattern: &str) -> Self

Add a CREATE clause

Example

use nexus_sdk::query_builder::QueryBuilder;

let query = QueryBuilder::new()
    .create("(n:Person {name: $name})")
    .param("name", "Alice")
    .build();

pub fn merge(self, pattern: &str) -> Self

Add a MERGE clause

pub fn where_(self, condition: &str) -> Self

Add a WHERE clause

Example

use nexus_sdk::query_builder::QueryBuilder;

let query = QueryBuilder::new()
    .match_("(n:Person)")
    .where_("n.age > $min_age")
    .param("min_age", 18)
    .build();

pub fn return_(self, items: &str) -> Self

Add a RETURN clause

Example

use nexus_sdk::query_builder::QueryBuilder;

let query = QueryBuilder::new()
    .match_("(n:Person)")
    .return_("n")
    .build();

pub fn set(self, assignments: &str) -> Self

Add a SET clause

pub fn delete(self, items: &str) -> Self

Add a DELETE clause

pub fn with(self, items: &str) -> Self

Add a WITH clause

pub fn order_by(self, expression: &str) -> Self

Add an ORDER BY clause

Example

use nexus_sdk::query_builder::QueryBuilder;

let query = QueryBuilder::new()
    .match_("(n:Person)")
    .return_("n")
    .order_by("n.name ASC")
    .build();

pub fn limit(self, count: usize) -> Self

Add a LIMIT clause

Example

use nexus_sdk::query_builder::QueryBuilder;

let query = QueryBuilder::new()
    .match_("(n:Person)")
    .return_("n")
    .limit(10)
    .build();

pub fn skip(self, count: usize) -> Self

Add a SKIP clause

pub fn param<T: Into<Value>>(self, name: &str, value: T) -> Self

Add a parameter to the query

Example

use nexus_sdk::query_builder::QueryBuilder;

let query = QueryBuilder::new()
    .match_("(n:Person)")
    .where_("n.name = $name")
    .param("name", "Alice")
    .build();

pub fn build(self) -> BuiltQuery

Build the final query string

Trait Implementations

impl Clone for QueryBuilder

fn clone(&self) -> QueryBuilder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QueryBuilder

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

Formats the value using the given formatter.

impl Default for QueryBuilder

fn default() -> Self

Returns the “default value” for a type.