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 void
checkNextRow()
Moves internal ResultSet cursor position down one row.void
close()
Closes ResultIterator and associated ResultSet.boolean
hasNextRow()
Returns true if there is at least one more record that can be read from the iterator.Iterator<T>
iterator()
T
nextRow()
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.void
skipRow()
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:ResultIterator
Returns all yet unread rows from ResultSet without closing it.- Specified by:
allRows
in 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:
hasNextRow
in interfaceResultIterator<T>
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nextRow
public T nextRow()
Description copied from interface:ResultIterator
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.- Specified by:
nextRow
in interfaceResultIterator<T>
- Since:
- 3.0
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skipRow
public void skipRow()
Description copied from interface:ResultIterator
Goes past current row. If the row is not needed, this may save some time on data conversion.- Specified by:
skipRow
in interfaceResultIterator<T>
- Since:
- 3.0
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close
public void close() throws NoSuchElementException
Closes 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:
close
in interfaceAutoCloseable
- Specified by:
close
in 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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