falkordb 0.1.5

A FalkorDB Rust client
Documentation 
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/*
 * Copyright FalkorDB Ltd. 2023 - present
 * Licensed under the MIT License.
 */

use crate::{EntityType, GraphSchema, IndexType};
use std::{collections::HashMap, fmt::Display};

pub(crate) mod blocking;
pub(crate) mod query_builder;

#[cfg(feature = "tokio")]
pub(crate) mod asynchronous;

pub trait HasGraphSchema {
    fn get_graph_schema_mut(&mut self) -> &mut GraphSchema;
}

pub(crate) fn generate_create_index_query<P: Display>(
    index_field_type: IndexType,
    entity_type: EntityType,
    label: &str,
    properties: &[P],
    options: Option<&HashMap<String, String>>,
) -> String {
    let properties_string = properties
        .iter()
        .map(|element| format!("l.{}", element))
        .collect::<Vec<_>>()
        .join(", ");

    let pattern = match entity_type {
        EntityType::Node => format!("(l:{})", label),
        EntityType::Edge => format!("()-[l:{}]->()", label),
    };

    let idx_type = match index_field_type {
        IndexType::Range => "",
        IndexType::Vector => "VECTOR ",
        IndexType::Fulltext => "FULLTEXT ",
    };

    let options_string = options
        .map(|hashmap| {
            hashmap
                .iter()
                .map(|(key, val)| format!("'{key}':'{val}'"))
                .collect::<Vec<_>>()
                .join(",")
        })
        .map(|options_string| format!(" OPTIONS {{ {} }}", options_string))
        .unwrap_or_default();

    format!(
        "CREATE {idx_type}INDEX FOR {pattern} ON ({}){}",
        properties_string, options_string
    )
}

pub(crate) fn generate_drop_index_query<P: Display>(
    index_field_type: IndexType,
    entity_type: EntityType,
    label: &str,
    properties: &[P],
) -> String {
    let properties_string = properties
        .iter()
        .map(|element| format!("e.{}", element))
        .collect::<Vec<_>>()
        .join(", ");

    let pattern = match entity_type {
        EntityType::Node => format!("(e:{})", label),
        EntityType::Edge => format!("()-[e:{}]->()", label),
    };

    let idx_type = match index_field_type {
        IndexType::Range => "",
        IndexType::Vector => "VECTOR",
        IndexType::Fulltext => "FULLTEXT",
    }
    .to_string();

    format!(
        "DROP {idx_type} INDEX for {pattern} ON ({})",
        properties_string
    )
}