PathQuery

Struct PathQuery 

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pub struct PathQuery<'a> { /* private fields */ }
Expand description

Path-native query builder for TCH

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impl<'a> PathQuery<'a>

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pub fn from_path(conn: &'a ToonConnection, path: &str) -> Self

Start query from path - O(|path|) resolution

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pub fn nested(self, subpath: &str) -> Self

Navigate to nested path: O(|subpath|) additional

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pub fn filter( self, field: &str, op: CompareOp, value: impl Into<ToonValue>, ) -> Self

Add predicate (pushed to ColumnStore scan)

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pub fn where_eq(self, field: &str, value: impl Into<ToonValue>) -> Self

Shorthand for equality filter

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pub fn where_gt(self, field: &str, value: impl Into<ToonValue>) -> Self

Shorthand for greater-than filter

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pub fn where_lt(self, field: &str, value: impl Into<ToonValue>) -> Self

Shorthand for less-than filter

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pub fn where_like(self, field: &str, pattern: &str) -> Self

Shorthand for LIKE filter

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pub fn project(self, columns: &[impl AsRef<str>]) -> Self

Project specific columns

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pub fn select(self, columns: &[impl AsRef<str>]) -> Self

Select specific columns (alias for project)

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pub fn order_by(self, column: &str, ascending: bool) -> Self

Order by column

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pub fn limit(self, n: usize) -> Self

Limit results

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pub fn offset(self, n: usize) -> Self

Skip first n results

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pub fn execute(self) -> Result<ToonResult<'a>>

Execute and return ToonResult for streaming output

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pub fn collect(self) -> Result<Vec<String>>

Execute and collect all results

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pub fn to_toon(self) -> Result<String>

Execute and get TOON string

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pub fn path(&self) -> &str

Get the path being queried

Auto Trait Implementations§

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impl<'a> Freeze for PathQuery<'a>

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impl<'a> !RefUnwindSafe for PathQuery<'a>

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impl<'a> Send for PathQuery<'a>

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impl<'a> Sync for PathQuery<'a>

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impl<'a> Unpin for PathQuery<'a>

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impl<'a> !UnwindSafe for PathQuery<'a>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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impl<T> From<T> for T

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fn from(t: T) -> T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

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