classRowMultiset

Simulation packages/ztd-query-core/src/Shadow/Row/RowMultiset.php:22

final class RowMultiset

Rows counted with their repeats: what one set of rows has that another does not.

A table may hold the same row twice, so comparing two states of it cannot be done with set arithmetic — a row that appears three times before and once after has been removed twice. Every row here is paired off against at most one row on the other side, and what stays unpaired is the difference.

Column order is not part of a row's identity: the same columns carrying the same values are the same row however the reader happened to order them.

Type Aliases§

Row = import from TableDefinition

Methods§

public function __construct(private RowMatch $match = new \ZtdQuery\Shadow\Row\RowMatch())

100%source §

Parameters

$match RowMatch Decides when two rows are the same row

Test cases 4

Calls 1

new RowMatch line 27

public function difference(array<int, Row> $left, array<int, Row> $right): list<Row>

100%source §

Answers the rows on the left that nothing on the right pairs with.

Parameters

`$left`	`array<int, Row>`	Rows to account for
`$right`	`array<int, Row>`	Rows they are paired off against

Returns

list<Row> The unpaired rows, in the order the left held them

Test cases 4

RowMultisetTest::testDifferenceAnswersTheRowsNothingOnTheOtherSidePairsWith covers and calls
RowMultisetTest::testDifferenceIgnoresTheOrderTheColumnsWereReadIn covers and calls
RowMultisetTest::testDifferenceIsNothingWhereEveryRowIsPairedOff covers and calls
RowMultisetTest::testDifferencePairsOffARepeatedRowOnlyOnce covers and calls

Called from 5

Calls 1

method-call RowMatch::sameRow() line 46

Private surface 1§

Implementation details, listed for orientation only.

private RowMatch $match = new \ZtdQuery\Shadow\Row\RowMatch()

Test cases 10§

Test cases that cover or call this symbol, from the coverage report and from the analyzed test sources.

Dedicated tests 4

RowMultisetTest::testDifferenceAnswersTheRowsNothingOnTheOtherSidePairsWith covers and calls
RowMultisetTest::testDifferenceIgnoresTheOrderTheColumnsWereReadIn covers and calls
RowMultisetTest::testDifferenceIsNothingWhereEveryRowIsPairedOff covers and calls
RowMultisetTest::testDifferencePairsOffARepeatedRowOnlyOnce covers and calls

Other tests reaching this symbol 6

SessionTest calls
MutationImpactTest calls
SynchronizeMutationTest calls
ReferentialIntegrityEnforcerTest calls
ShadowApplicationTest calls
StatementSimulatorTest calls

Relations§

Instantiated in 2

Method calls 5

Type declarations 2