Package org.tribuo.data.sql

Class ResultSetIterator

java.lang.Object

com.oracle.labs.mlrg.olcut.util.IOSpliterator<ColumnarIterator.Row>

org.tribuo.data.columnar.ColumnarIterator

org.tribuo.data.sql.ResultSetIterator

All Implemented Interfaces:

Iterator<ColumnarIterator.Row>, Spliterator<ColumnarIterator.Row>

public class ResultSetIterator
extends ColumnarIterator

An iterator over a ResultSet returned from JDBC.

Nested Class Summary

Nested classes/interfaces inherited from class org.tribuo.data.columnar.ColumnarIterator

ColumnarIterator.Row

Nested classes/interfaces inherited from interface java.util.Spliterator

Spliterator.OfDouble, Spliterator.OfInt, Spliterator.OfLong, Spliterator.OfPrimitive<T extends Object,T_CONS extends Object,T_SPLITR extends Spliterator.OfPrimitive<T,T_CONS,T_SPLITR>>

Field Summary

Fields inherited from class org.tribuo.data.columnar.ColumnarIterator

currentRow, fields

Fields inherited from class com.oracle.labs.mlrg.olcut.util.IOSpliterator

DEFAULT_BATCH_SIZE, DEFAULT_CHARACTERISTICS

Fields inherited from interface java.util.Spliterator

CONCURRENT, DISTINCT, IMMUTABLE, NONNULL, ORDERED, SIZED, SORTED, SUBSIZED

Constructor Summary

Constructors

Constructor	Description
ResultSetIterator(ResultSet rs)	Construct a result set iterator over the supplied result set.
ResultSetIterator(ResultSet rs, int fetchSize)	Constructs a result set iterator over the supplied result set using the specified fetch buffer size.

Method Summary

Modifier and Type	Method	Description
protected Optional<ColumnarIterator.Row>	getRow()	Returns the next row of data based on internal state stored by the implementor, or Optional.empty() if there is no more data.

Methods inherited from class org.tribuo.data.columnar.ColumnarIterator

forEachRemaining, getFields, hasNext, next, tryAdvance

Methods inherited from class com.oracle.labs.mlrg.olcut.util.IOSpliterator

characteristics, estimateSize, trySplit

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Iterator

remove

Methods inherited from interface java.util.Spliterator

getComparator, getExactSizeIfKnown, hasCharacteristics

Constructor Details

ResultSetIterator

public ResultSetIterator(ResultSet rs)
                  throws SQLException

Construct a result set iterator over the supplied result set.

Parameters:

rs - The result set.

Throws:

SQLException - If the result set cannot be inspected.

ResultSetIterator

public ResultSetIterator(ResultSet rs,
 int fetchSize)
                  throws SQLException

Constructs a result set iterator over the supplied result set using the specified fetch buffer size.

Parameters:

rs - The result set.

fetchSize - The fetch size.

Throws:

SQLException - If the result set cannot be inspected.

Method Details

getRow

protected Optional<ColumnarIterator.Row> getRow()

Description copied from class: ColumnarIterator

Returns the next row of data based on internal state stored by the implementor, or Optional.empty() if there is no more data.

Specified by:

getRow in class ColumnarIterator

Returns:

The next row of data or None.