Struct mz_adapter::ExecuteContextExtra

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pub struct ExecuteContextExtra {
    statement_uuid: Option<StatementLoggingId>,
}
Expand description

State that the coordinator must process as part of retiring command execution. ExecuteContextExtra::Default is guaranteed to produce a value that will cause the coordinator to do nothing, and is intended for use by code that invokes the execution processing flow (i.e., sequence_plan) without actually being a statement execution.

This struct must not be dropped if it contains non-trivial state. The only valid way to get rid of it is to pass it to the coordinator for retirement. To enforce this, we assert in the Drop implementation.

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§statement_uuid: Option<StatementLoggingId>

Implementations§

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impl ExecuteContextExtra

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pub(crate) fn new(statement_uuid: Option<StatementLoggingId>) -> Self

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pub fn is_trivial(&self) -> bool

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pub fn contents(&self) -> Option<StatementLoggingId>

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fn retire(self) -> Option<StatementLoggingId>

Take responsibility for the contents. This should only be called from code that knows what to do to finish up logging based on the inner value.

Trait Implementations§

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impl Debug for ExecuteContextExtra

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

Formats the value using the given formatter. Read more
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impl Default for ExecuteContextExtra

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fn default() -> ExecuteContextExtra

Returns the “default value” for a type. Read more
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impl Drop for ExecuteContextExtra

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fn drop(&mut self)

Executes the destructor for this type. Read more

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