Package it.unimi.di.big.mg4j.document

Class JdbcDocumentCollection.JdbcDocumentIterator

java.lang.Object

it.unimi.di.big.mg4j.document.AbstractDocumentIterator

it.unimi.di.big.mg4j.document.JdbcDocumentCollection.JdbcDocumentIterator

All Implemented Interfaces:

DocumentIterator, SafelyCloseable, Closeable, AutoCloseable

Enclosing class:

JdbcDocumentCollection

protected class JdbcDocumentCollection.JdbcDocumentIterator
extends AbstractDocumentIterator

An iterator over the whole collection that performs a single DBMS transaction.

Method Summary

Modifier and Type	Method	Description
void	close()	Closes this document iterator, releasing all resources.
Document	nextDocument()	Returns the next document.

Methods inherited from class it.unimi.di.big.mg4j.document.AbstractDocumentIterator

finalize

Methods inherited from class java.lang.Object

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

Method Detail

nextDocument

public Document nextDocument()
                      throws IOException

Description copied from interface: DocumentIterator

Returns the next document.

Returns:

the next document, or null if there are no other documents.

Throws:

IOException

close

public void close()
           throws IOException

Description copied from interface: DocumentIterator

Closes this document iterator, releasing all resources.

You should always call this method after having finished with this iterator. Implementations are invited to call this method in a finaliser as a safety net, but since there is no guarantee as to when finalisers are invoked, you should not depend on this behaviour.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in interface DocumentIterator

Overrides:

close in class AbstractDocumentIterator

Throws:

IOException