Package org.apache.cayenne.access.jdbc
Class JDBCResultIterator<T>
- java.lang.Object
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- org.apache.cayenne.access.jdbc.JDBCResultIterator<T>
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- All Implemented Interfaces:
AutoCloseable,Iterable<T>,ResultIterator<T>
public class JDBCResultIterator<T> extends Object implements ResultIterator<T>
A ResultIterator over the underlying JDBC ResultSet.- Since:
- 1.2
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Constructor Summary
Constructors Constructor Description JDBCResultIterator(Statement statement, ResultSet resultSet, RowReader<T> rowReader)Creates new JDBCResultIterator that reads from provided ResultSet.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description List<T>allRows()Returns all yet unread rows from ResultSet without closing it.protected voidcheckNextRow()Moves internal ResultSet cursor position down one row.voidclose()Closes ResultIterator and associated ResultSet.booleanhasNextRow()Returns true if there is at least one more record that can be read from the iterator.Iterator<T>iterator()TnextRow()Returns the next result row that is, depending on the query, may be a scalar value, a DataRow, or an Object[] array containing a mix of scalars and DataRows.voidskipRow()Goes past current row.-
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface java.lang.Iterable
forEach, spliterator
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Method Detail
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allRows
public List<T> allRows()
Description copied from interface:ResultIteratorReturns all yet unread rows from ResultSet without closing it.- Specified by:
allRowsin interfaceResultIterator<T>- Since:
- 3.0
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hasNextRow
public boolean hasNextRow()
Returns true if there is at least one more record that can be read from the iterator.- Specified by:
hasNextRowin interfaceResultIterator<T>
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nextRow
public T nextRow()
Description copied from interface:ResultIteratorReturns the next result row that is, depending on the query, may be a scalar value, a DataRow, or an Object[] array containing a mix of scalars and DataRows.- Specified by:
nextRowin interfaceResultIterator<T>- Since:
- 3.0
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skipRow
public void skipRow()
Description copied from interface:ResultIteratorGoes past current row. If the row is not needed, this may save some time on data conversion.- Specified by:
skipRowin interfaceResultIterator<T>- Since:
- 3.0
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close
public void close() throws NoSuchElementExceptionCloses ResultIterator and associated ResultSet. This method must be called explicitly when the user is finished processing the records. Otherwise unused database resources will not be released properly.- Specified by:
closein interfaceAutoCloseable- Specified by:
closein interfaceResultIterator<T>- Throws:
NoSuchElementException
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checkNextRow
protected void checkNextRow()
Moves internal ResultSet cursor position down one row. Checks if the next row is available.
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