Enum RowMapping 

pub enum RowMapping {
    Node {
        label: String,
        id_column: Option<String>,
        id_property: Option<String>,
        properties: Vec<ColumnSpec>,
    },
    Relationship {
        rel_type: String,
        start_label: String,
        start_column: String,
        start_match_property: String,
        end_label: String,
        end_column: String,
        end_match_property: String,
        properties: Vec<ColumnSpec>,
    },
}

Top-level mapping: how to turn a stream of decoded rows into Cypher inserts. Carries enough information for the playground’s auto-detect / preview path; users can edit this in the import dialog before running.

Variants

Node

Each row becomes a node of label with the listed properties.

Fields

label: String

Single label or Label1:Label2:Label3.

id_column: Option<String>

Optional file column whose value becomes a unique property later referenced by relationship imports. When set, the generated statement includes a property literal; when omitted, the node has no identity beyond Cypher’s auto-allocated node id.

id_property: Option<String>

Property name to store the id column under (defaults to id when [Self::id_column] is set).

properties: Vec<ColumnSpec>

Source column → property name mappings.

Relationship

Each row becomes a relationship between two nodes located by (start_label, start_match_property) and the corresponding end_* fields.

Fields

rel_type: String

start_label: String

start_column: String

start_match_property: String

end_label: String

end_column: String

end_match_property: String

properties: Vec<ColumnSpec>

Implementations

impl RowMapping

pub fn to_cypher(&self) -> Result<String, String>

Render the mapping into a Cypher template. The template binds $rows to a batch of decoded rows.

Trait Implementations

impl Clone for RowMapping

fn clone(&self) -> RowMapping

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RowMapping

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for RowMapping

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for RowMapping

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

where __S: Serializer,

Serialize this value into the given Serde serializer.