hub / github.com/1345414527/MIT6.830 / next

Method next

src/java/simpledb/storage/DbFileIterator.java:30–30 · view source on GitHub ↗

Gets the next tuple from the operator (typically implementing by reading from a child operator or an access method). @return The next tuple in the iterator. @throws NoSuchElementException if there are no more tuples

()

Source from the content-addressed store, hash-verified

28	* @throws NoSuchElementException if there are no more tuples
29	*/
30	Tuple next()
31	throws DbException, TransactionAbortedException, NoSuchElementException;
32
33	/**

Callers 15

testIteratorBasicMethod · 0.95

testIteratorCloseMethod · 0.95

indexIteratorMethod · 0.95

testAlternateEmptyAndFullPagesThenIterateMethod · 0.95

testIteratorBasicMethod · 0.95

testIteratorCloseMethod · 0.95

setUpMethod · 0.95

deleteTupleMethod · 0.95

handleManyDirtyPagesMethod · 0.95

deleteTupleMethod · 0.95

nextKeyLockingTestLessThanMethod · 0.95

nextKeyLockingTestGreaterThanMethod · 0.95

Implementers 8

HeapFileIteratorsrc/java/simpledb/storage/HeapFile.jav

MockScantest/simpledb/TestUtil.java

TupleArrayIteratorsrc/java/simpledb/Parser.java

TupleIteratorsrc/java/simpledb/storage/TupleIterato

BTreeScansrc/java/simpledb/index/BTreeScan.java

AggregateItersrc/java/simpledb/execution/AggregateI

SeqScansrc/java/simpledb/execution/SeqScan.ja

AbstractDbFileIteratorsrc/java/simpledb/storage/AbstractDbFi

Calls

no outgoing calls

Tested by 15

testIteratorBasicMethod · 0.76

testIteratorCloseMethod · 0.76

indexIteratorMethod · 0.76

testAlternateEmptyAndFullPagesThenIterateMethod · 0.76

testIteratorBasicMethod · 0.76

testIteratorCloseMethod · 0.76

setUpMethod · 0.76

deleteTupleMethod · 0.76

handleManyDirtyPagesMethod · 0.76

deleteTupleMethod · 0.76

nextKeyLockingTestLessThanMethod · 0.76

nextKeyLockingTestGreaterThanMethod · 0.76