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public interface ResultObjectProvider
Interface that allows lazy/custom instantiation of input objects.
ResultList
objects do not necessarily load in data all
at once. Instead, they may lazily load objects as necessary. So,
the lifespan of a ResultObjectProvider
instance is
related to how the application deals with processing the
ResultList
created with a given
ResultObjectProvider
instance.
Method Summary | |
---|---|
boolean |
absolute(int pos)
Move to the given 0-based position. |
void |
close()
Free the resources associated with this provider. |
Object |
getResultObject()
Instantiate the current result object. |
void |
handleCheckedException(Exception e)
Any checked exceptions that are thrown will be passed to this method. |
boolean |
next()
Advance the input to the next position. |
void |
open()
Open the result. |
void |
reset()
Reset this provider. |
int |
size()
Return the number of items in the input, or Integer.MAX_VALUE
if the size in unknown. |
boolean |
supportsRandomAccess()
Return true if this provider supports random access. |
Method Detail |
---|
boolean supportsRandomAccess()
void open() throws Exception
next()
, absolute(int)
, or size()
.
Exception
Object getResultObject() throws Exception
next()
or absolute(int)
.
Exception
boolean next() throws Exception
true
if
there is more data; otherwise false
.
Exception
boolean absolute(int pos) throws Exception
true
if there is data at this position;
otherwise false
. This may be invoked in place of
next()
.
Exception
int size() throws Exception
Integer.MAX_VALUE
if the size in unknown.
Exception
void reset() throws Exception
Exception
void close() throws Exception
close
in interface Closeable
Exception
void handleCheckedException(Exception e)
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