PGpcEfficient<T extends GpcEfficient<GpsPoint>> class abstract

Abstract persister for GpcEfficient. Child classes should be created for specific children of GpcEfficient, providing overriddes for methods/properties like supportedType and signatureAndVersion.





chunkSize int
Approximate number of bytes to use as chunk size when reading/writing. After some basic testing settled on about 4 MB chunks, since some performance checks with 1M GpsPoint in a GpcCompactGpsPoint showed less than 15% performance improvements if huge chunk sizes are allowed that fit the whole list in one go.
hashCode int
The hash code for this object.
no setterinherited
runtimeType Type
A representation of the runtime type of the object.
no setterinherited
signature String
Returns the signature string for this Persister.
no setterinherited
signatureAndVersion SignatureAndVersion
Override in children to indicate the signature of this class (used to recognize when reading a file which persister to initialize) and which version is written. The version should be increased if for example new fields get persisted. In that case, the reader must contain compatibility code for reading older versions.
no setterinherited
supportedType Type
Indicates what object type this Persister can persist, to be overridden in child classes.
no setterinherited
version int
Indicates the version of the persistence method.
no setterinherited


getMetadata(GpsPointsView<GpsPoint> view) ByteData?
Allows writing up to Persistence.maxMetadataLength bytes of extra information in the file header. Override in children if needed.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
readViewFromStream(GpsPointsView<GpsPoint> view, StreamReaderState source, int version, ByteData metadata) Future<void>
Overwrites the contents of view (if it is not read-only) with the information fom the source. version and metadata indicate the additional information that was read from the block header in the file, and may be used to e.g. convert old formats to new.
signatureFromString(String sig) String
Makes sure that the specified sig, if too short, is extended to be of valid signature length.
signatureFromType(Type type) String
Creates a default signature from the type. This should be used carefully, since changing the name of the supportedType class in a refactoring can lead to stored files becoming incompatible.
toString() String
A string representation of this object.
writeViewToStream(GpsPointsView<GpsPoint> view) Stream<List<int>>
Converts view to a Stream of bytes. Override in children.


operator ==(Object other) bool
The equality operator.