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java.lang.Objectcom.devexperts.qd.ng.RecordSource
public abstract class RecordSource
Record source is a read-only sequence of records that is available via
RecordCursor
using next()
method. It supports navigation
to arbitrary records by their position via getPosition()
and
cursorAt(long)
methods and, thus, can be read multiple times.
Method Summary | |
---|---|
abstract RecordCursor |
cursorAt(long position)
Returns read cursor at a specified position. |
abstract long |
getPosition()
Retruns position of the current record. |
abstract RecordCursor |
next()
Returns read cursor at the current position and advances position to next record. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public abstract RecordCursor next()
public abstract RecordCursor cursorAt(long position)
getPosition()
method.
public abstract long getPosition()
next()
method.
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