Trait ligature::WriteTx

source · [−]
pub trait WriteTx {
    fn new_identifier(
        &self, 
        prefix: Option<String>
    ) -> Result<Identifier, LigatureError>;

    fn add_statement(
        &self, 
        statement: &Statement
    ) -> Result<Statement, LigatureError>;

    fn remove_statement(
        &self, 
        persisted_statement: &Statement
    ) -> Result<bool, LigatureError>;

    fn cancel(&self) -> Result<(), LigatureError>;
}
Expand description

Represents a WriteTx within the context of a Ligature instance and a single Dataset

Required methods

Creates a new, unique Entity within this Dataset with an optional prefix. This version of the function enforces that the new entity is unique in this Dataset.

Adds a given Statement to this Dataset. If the Statement already exists nothing happens (TODO maybe add it with a new context?). Note: Potentially could trigger a ValidationError

Removes a given Statement from this Dataset. If the Statement doesn’t exist nothing happens and returns Ok(false). This function returns Ok(true) only if the given Statement was found and removed. Note: Potentially could trigger a ValidationError.

Cancels this transaction so that none of the changes made so far will be stored. This also closes this transaction so no other methods can be called without returning a LigatureError.

Implementors