T
- The type managed by the Row
.Collection<T>
, Iterable<T>
, List<T>
RowImpl
public interface Row<T> extends List<T>
Row
holds multiple data elements loosely coupled to a
Header
. As a Row
just contains a list of data elements with
no keys (names) directly associated to the elements, a Header
with
the according list of key (name) and type definitions is required to give a
Row
its semantics.
In terms of a CSV file, a Row
represents a single line of comma
separated values. The Header
stands for the header line (top line) of
the CSV file. The semantics for the content of a Row
is provided by
the according Header
.
Many Row
instances are contained in a Rows
instance which in
turn requires a single Header
to give all the therein contained
Row
instances their semantics (in terms of key (name) and type
information).
In contrast to a Row
, a Record
relates an element field with
a key (name), called Field
.
In contrast to a Record
, a Row
does not relate a key (name)
to its values. To do this, a Header
is required. Similar to a
Record
, a Row
makes use of Column
instances (provided
by a Header
instance) to give the fields additional semantics.
Modifier and Type | Method | Description |
---|---|---|
T |
get(Header<T> aHeader,
String aKey) |
This method retrieves a value from the row by taking the index of the
according column in the header of the given key (the one with the given
key) and returns that value.
|
parallelStream, removeIf, stream
add, add, addAll, addAll, clear, contains, containsAll, equals, get, hashCode, indexOf, isEmpty, iterator, lastIndexOf, listIterator, listIterator, remove, remove, removeAll, replaceAll, retainAll, set, size, sort, spliterator, subList, toArray, toArray
T get(Header<T> aHeader, String aKey) throws HeaderMismatchException, ColumnMismatchException
Header
(as down
with Column.get(Record)
).
-------------------------------------------------------------------------aHeader
- The header being the reference for retrieval of the value
by the given key.aKey
- The key for which to retrieve the value.HeaderMismatchException
- Thrown in case there is a mismatch
between the given HeaderMismatchException
and the
Row
, i.e. the index for the given key in the header may
be out of index of the given row or the given key does not exist
in the Header
.ColumnMismatchException
- in case the type defined in the column
for that key does not match the type in the row identified by the
given key.Copyright © 2018. All rights reserved.