polars_python::prelude

Trait Utf8JsonPathImpl

Source 
pub trait Utf8JsonPathImpl: AsString {
    // Provided methods
    fn json_path_match(
        &self,
        json_path: &ChunkedArray<StringType>,
    ) -> Result<ChunkedArray<StringType>, PolarsError> { ... }
    fn json_infer(
        &self,
        number_of_rows: Option<usize>,
    ) -> Result<DataType, PolarsError> { ... }
    fn json_decode(
        &self,
        dtype: Option<DataType>,
        infer_schema_len: Option<usize>,
    ) -> Result<Series, PolarsError> { ... }
    fn json_path_select(
        &self,
        json_path: &str,
    ) -> Result<ChunkedArray<StringType>, PolarsError> { ... }
    fn json_path_extract(
        &self,
        json_path: &str,
        dtype: Option<DataType>,
        infer_schema_len: Option<usize>,
    ) -> Result<Series, PolarsError> { ... }
}

Provided Methods§

Source

fn json_path_match( &self, json_path: &ChunkedArray<StringType>, ) -> Result<ChunkedArray<StringType>, PolarsError>

Extract json path, first match Refer to https://goessner.net/articles/JsonPath/

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fn json_infer( &self, number_of_rows: Option<usize>, ) -> Result<DataType, PolarsError>

Returns the inferred DataType for JSON values for each row in the StringChunked, with an optional number of rows to inspect. When None is passed for the number of rows, all rows are inspected.

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fn json_decode( &self, dtype: Option<DataType>, infer_schema_len: Option<usize>, ) -> Result<Series, PolarsError>

Extracts a typed-JSON value for each row in the StringChunked

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fn json_path_select( &self, json_path: &str, ) -> Result<ChunkedArray<StringType>, PolarsError>

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fn json_path_extract( &self, json_path: &str, dtype: Option<DataType>, infer_schema_len: Option<usize>, ) -> Result<Series, PolarsError>

Implementors§