Trait ligature::WriteTx[−][src]

pub trait WriteTx {
    fn new_entity(&self) -> Result<Entity, LigatureError>;

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

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

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

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

Required methods

fn new_entity(&self) -> Result<Entity, LigatureError>[src]

Creates a new, unique Entity within this Dataset. Note: Entitys are shared across named graphs in a given Dataset.

fn add_statement(
    &self,
    statement: &Statement
) -> Result<PersistedStatement, LigatureError>[src]

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

fn remove_statement(
    &self,
    persisted_statement: &PersistedStatement
) -> Result<bool, LigatureError>[src]

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

fn cancel(&self) -> Result<(), LigatureError>[src]

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.

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Implementors

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