Duration class

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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. A Duration represents a signed, fixed-length span of time represented as a count of seconds and fractions of seconds at nanosecond resolution. It is independent of any calendar and concepts like "day" or "month". It is related to Timestamp in that the difference between two Timestamp values is a Duration and it can be added or subtracted from a Timestamp. Range is approximately +-10,000 years.

Examples

Example 1: Compute Duration from two Timestamps in pseudo code.

Timestamp start = ...; Timestamp end = ...; Duration duration = ...;

duration.seconds = end.seconds - start.seconds; duration.nanos = end.nanos - start.nanos;

if (duration.seconds < 0 && duration.nanos > 0) { duration.seconds += 1; duration.nanos -= 1000000000; } else if (duration.seconds > 0 && duration.nanos < 0) { duration.seconds -= 1; duration.nanos += 1000000000; }

Example 2: Compute Timestamp from Timestamp + Duration in pseudo code.

Timestamp start = ...; Duration duration = ...; Timestamp end = ...;

end.seconds = start.seconds + duration.seconds; end.nanos = start.nanos + duration.nanos;

if (end.nanos < 0) { end.seconds -= 1; end.nanos += 1000000000; } else if (end.nanos >= 1000000000) { end.seconds += 1; end.nanos -= 1000000000; }

Example 3: Compute Duration from datetime.timedelta in Python.

td = datetime.timedelta(days=3, minutes=10) duration = Duration() duration.FromTimedelta(td)

JSON Mapping

In JSON format, the Duration type is encoded as a string rather than an object, where the string ends in the suffix "s" (indicating seconds) and is preceded by the number of seconds, with nanoseconds expressed as fractional seconds. For example, 3 seconds with 0 nanoseconds should be encoded in JSON format as "3s", while 3 seconds and 1 nanosecond should be expressed in JSON format as "3.000000001s", and 3 seconds and 1 microsecond should be expressed in JSON format as "3.000001s".

Inheritance

Object
IProtoMessage
CosmosProtoMessage
Duration

Constructors

Duration({BigInt? seconds, int? nanos}): const
Duration.deserialize(List<int> bytes): factory
Duration.fromJson(Map<String, dynamic> json): factory
Duration.fromString(String duration): factory

Properties

declarationId → DefaultCosmosProtoTypeUrl: no setteroverride
hashCode → int: The hash code for this object.
no setterinherited
nanos → int?: Signed fractions of a second at nanosecond resolution of the span of time. Durations less than one second are represented with a 0 seconds field and a positive or negative nanos field. For durations of one second or more, a non-zero value for the nanos field must be of the same sign as the seconds field. Must be from -999,999,999 to +999,999,999 inclusive.
final
protoValues → List<Object?>: no setteroverride
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
seconds → BigInt?: Signed seconds of the span of time. Must be from -315,576,000,000 to +315,576,000,000 inclusive. Note: these bounds are computed from: 60 sec/min * 60 min/hr * 24 hr/day * 365.25 days/year * 10000 years
final

Methods

encodeString({bool asNanos = true}) → String
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
protoConfig() → ProtoMessageConfig: override
toAny() → Any: inherited
toBase64() → String: inherited
toBuffer() → List<int>: inherited
toJson() → Map<String, dynamic>: Dont change order of toJson the key index must be equal to protoConfig fields.
override
toJsonObject(CosmosToJsonEncoding encoding, {CosmosBech32Config? config}) → Map<String, dynamic>: inherited
toString() → String: A string representation of this object.
inherited

Operators

operator ==(Object other) → bool: The equality operator.
inherited

Static Methods

protoConfigStatic() → ProtoMessageConfig