Module datetime 

Temporal functions for Cypher query evaluation.

Provides date, time, datetime, and duration constructors along with extraction functions compatible with OpenCypher temporal types.

Structs

CypherDuration

Represents a Cypher duration with separate month, day, and nanosecond components.

Enums

TemporalType

Classification of temporal types for dispatch.

TimezoneInfo

Parsed timezone information.

Functions

add_cypher_duration_to_date

Add a CypherDuration to a date string, returning the result date string.

add_cypher_duration_to_datetime

Add a CypherDuration to a datetime-with-timezone string, returning the result string.

add_cypher_duration_to_localdatetime

Add a CypherDuration to a local datetime string, returning the result string.

add_cypher_duration_to_localtime

Add a CypherDuration to a local time string, returning the result time string.

add_cypher_duration_to_time

Add a CypherDuration to a time-with-timezone string, returning the result time string.

add_duration_to_date

Add duration (microseconds) to date.

add_duration_to_datetime

Add duration (microseconds) to datetime.

add_months_to_date

Add months to a date with day-of-month clamping.

classify_temporal

Classify a string value into its temporal type using pattern detection.

datetime_difference

Subtract two datetimes, return duration in microseconds.

duration_to_micros

Convert a duration value (ISO 8601 string or i64 micros) to microseconds.

eval_datetime_function

eval_datetime_function_with_clock

Evaluate a temporal function using a frozen statement clock.

eval_duration_accessor

Evaluate a duration component accessor using Euclidean division.

eval_temporal_accessor

Evaluate a temporal component accessor.

eval_temporal_accessor_value

Evaluate a temporal component accessor on a Value.

is_date_value

Check if value is a date string or temporal date.

is_datetime_value

Check if value is a datetime string or temporal datetime.

is_duration_accessor

Check if a property name is a valid duration accessor.

is_duration_or_micros

Check if a value is a duration string OR an integer (microseconds).

is_duration_string

Check if a string looks like a duration value.

is_duration_value

Check if value is a duration (ISO 8601 string starting with ‘P’ or temporal duration).

is_temporal_accessor

Check if a property name is a valid temporal accessor.

is_temporal_string

Check if a string looks like a temporal value (date, time, datetime).

parse_datetime_utc

Parse a datetime string into a DateTime<Utc>.

parse_datetime_with_tz

Parse a datetime string and extract date, time, and timezone info.

parse_duration_from_value

Parse a duration from a Value, handling temporal durations, ISO 8601 strings, and integer microseconds.

parse_duration_to_cypher

Parse a duration string to a CypherDuration with preserved components.

parse_duration_to_micros

Parse a duration string to microseconds.