pub struct ConvertedType(pub i32);
Expand description

DEPRECATED: Common types used by frameworks(e.g. hive, pig) using parquet. ConvertedType is superseded by LogicalType. This enum should not be extended.

See LogicalTypes.md for conversion between ConvertedType and LogicalType.

Tuple Fields

0: i32

Implementations

a BYTE_ARRAY actually contains UTF8 encoded chars

a map is converted as an optional field containing a repeated key/value pair

a key/value pair is converted into a group of two fields

a list is converted into an optional field containing a repeated field for its values

an enum is converted into a binary field

A decimal value.

This may be used to annotate binary or fixed primitive types. The underlying byte array stores the unscaled value encoded as two’s complement using big-endian byte order (the most significant byte is the zeroth element). The value of the decimal is the value * 10^{-scale}.

This must be accompanied by a (maximum) precision and a scale in the SchemaElement. The precision specifies the number of digits in the decimal and the scale stores the location of the decimal point. For example 1.23 would have precision 3 (3 total digits) and scale 2 (the decimal point is 2 digits over).

A Date

Stored as days since Unix epoch, encoded as the INT32 physical type.

A time

The total number of milliseconds since midnight. The value is stored as an INT32 physical type.

A time.

The total number of microseconds since midnight. The value is stored as an INT64 physical type.

A date/time combination

Date and time recorded as milliseconds since the Unix epoch. Recorded as a physical type of INT64.

A date/time combination

Date and time recorded as microseconds since the Unix epoch. The value is stored as an INT64 physical type.

An unsigned integer value.

The number describes the maximum number of meaningful data bits in the stored value. 8, 16 and 32 bit values are stored using the INT32 physical type. 64 bit values are stored using the INT64 physical type.

A signed integer value.

The number describes the maximum number of meaningful data bits in the stored value. 8, 16 and 32 bit values are stored using the INT32 physical type. 64 bit values are stored using the INT64 physical type.

An embedded JSON document

A JSON document embedded within a single UTF8 column.

An embedded BSON document

A BSON document embedded within a single BINARY column.

An interval of time

This type annotates data stored as a FIXED_LEN_BYTE_ARRAY of length 12 This data is composed of three separate little endian unsigned integers. Each stores a component of a duration of time. The first integer identifies the number of months associated with the duration, the second identifies the number of days associated with the duration and the third identifies the number of milliseconds associated with the provided duration. This duration of time is independent of any particular timezone or date.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Converts to this type from the input type.

Converts to this type from the input type.

Converts to this type from the input type.

Converts to this type from the input type.

Feeds this value into the given Hasher. Read more

Feeds a slice of this type into the given Hasher. Read more

This method returns an Ordering between self and other. Read more

Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

Restrict a value to a certain interval. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

This method returns an ordering between self and other values if one exists. Read more

This method tests less than (for self and other) and is used by the < operator. Read more

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

This method tests greater than (for self and other) and is used by the > operator. Read more

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.