org.apache.accumulo.core.client.impl
Class TabletServerBatchReader

java.lang.Object
  org.apache.accumulo.core.client.impl.ScannerOptions
      org.apache.accumulo.core.client.impl.TabletServerBatchReader

All Implemented Interfaces:

Iterable<Map.Entry<Key,Value>>, BatchScanner, ScannerBase

Direct Known Subclasses:

TabletServerBatchDeleter

public class TabletServerBatchReader
extends ScannerOptions
implements BatchScanner

Field Summary

static org.apache.log4j.Logger

log

Fields inherited from class org.apache.accumulo.core.client.impl.ScannerOptions

fetchedColumns, serverSideIteratorList, serverSideIteratorOptions, timeOut

Constructor Summary

TabletServerBatchReader(Instance instance, Credentials credentials, String table, Authorizations authorizations, int numQueryThreads)

Method Summary

void	close() Closes any underlying connections on the scanner
protected void	finalize() Warning: do not rely upon finalize to close this class.
Iterator<Map.Entry<Key,Value>>	iterator() Returns an iterator over an accumulo table.
void	setRanges(Collection<Range> ranges) Allows scanning over multiple ranges efficiently.

Methods inherited from class org.apache.accumulo.core.client.impl.ScannerOptions

addScanIterator, clearColumns, clearScanIterators, fetchColumn, fetchColumn, fetchColumnFamily, getFetchedColumns, getTimeout, removeScanIterator, setOptions, setTimeout, updateScanIteratorOption

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.accumulo.core.client.BatchScanner

setTimeout

Methods inherited from interface org.apache.accumulo.core.client.ScannerBase

addScanIterator, clearColumns, clearScanIterators, fetchColumn, fetchColumnFamily, getTimeout, removeScanIterator, updateScanIteratorOption

Field Detail

log

public static final org.apache.log4j.Logger log

Constructor Detail

TabletServerBatchReader

public TabletServerBatchReader(Instance instance,
                               Credentials credentials,
                               String table,
                               Authorizations authorizations,
                               int numQueryThreads)

Method Detail

close

public void close()

Description copied from interface: ScannerBase

Closes any underlying connections on the scanner

Specified by:

close in interface BatchScanner

Specified by:

close in interface ScannerBase

Overrides:

close in class ScannerOptions

finalize

protected void finalize()

Warning: do not rely upon finalize to close this class. Finalize is not guaranteed to be called.

Overrides:

finalize in class Object

setRanges

public void setRanges(Collection<Range> ranges)

Description copied from interface: BatchScanner

Allows scanning over multiple ranges efficiently.

Specified by:

setRanges in interface BatchScanner

Parameters:

ranges - specifies the non-overlapping ranges to query

iterator

public Iterator<Map.Entry<Key,Value>> iterator()

Description copied from interface: ScannerBase

Returns an iterator over an accumulo table. This iterator uses the options that are currently set for its lifetime, so setting options will have no effect on existing iterators. Keys returned by the iterator are not guaranteed to be in sorted order.

Specified by:

iterator in interface Iterable<Map.Entry<Key,Value>>

Specified by:

iterator in interface ScannerBase

Overrides:

iterator in class ScannerOptions

Returns:

an iterator over Key,Value pairs which meet the restrictions set on the scanner