public class ColumnAgeOffFilter extends Filter
Modifier and Type | Class and Description |
---|---|
static class |
ColumnAgeOffFilter.TTLSet |
OptionDescriber.IteratorOptions
Constructor and Description |
---|
ColumnAgeOffFilter() |
Modifier and Type | Method and Description |
---|---|
boolean |
accept(Key k,
Value v) |
static void |
addTTL(IteratorSetting is,
IteratorSetting.Column column,
Long ttl)
A convenience method for adding or changing an age off threshold for a column.
|
SortedKeyValueIterator<Key,Value> |
deepCopy(IteratorEnvironment env)
Creates a deep copy of this iterator as though seek had not yet been called.
|
OptionDescriber.IteratorOptions |
describeOptions()
Gets an iterator options object that contains information needed to configure this iterator.
|
void |
init(SortedKeyValueIterator<Key,Value> source,
Map<String,String> options,
IteratorEnvironment env)
Initializes the iterator.
|
void |
overrideCurrentTime(long ts) |
static void |
removeTTL(IteratorSetting is,
IteratorSetting.Column column)
A convenience method for removing an age off threshold for a column.
|
boolean |
validateOptions(Map<String,String> options)
Check to see if an options map contains all options required by an iterator and that the option
values are in the expected formats.
|
findTop, next, seek, setNegate
getSource, getTopKey, getTopValue, hasTop, setSource
public void init(SortedKeyValueIterator<Key,Value> source, Map<String,String> options, IteratorEnvironment env) throws IOException
SortedKeyValueIterator
init
in interface SortedKeyValueIterator<Key,Value>
init
in class Filter
source
- SortedKeyValueIterator source to read data from.options
- Map map of string option names to option values.env
- IteratorEnvironment environment in which iterator is being run.IOException
- unused.public SortedKeyValueIterator<Key,Value> deepCopy(IteratorEnvironment env)
SortedKeyValueIterator
public void overrideCurrentTime(long ts)
public OptionDescriber.IteratorOptions describeOptions()
OptionDescriber
describeOptions
in interface OptionDescriber
describeOptions
in class Filter
public boolean validateOptions(Map<String,String> options)
OptionDescriber
validateOptions
in interface OptionDescriber
validateOptions
in class Filter
options
- a map of option names to option valuespublic static void addTTL(IteratorSetting is, IteratorSetting.Column column, Long ttl)
is
- IteratorSetting object to configure.column
- column to encode as a parameter name.ttl
- age off threshold in milliseconds.public static void removeTTL(IteratorSetting is, IteratorSetting.Column column)
is
- IteratorSetting object to configure.column
- column to encode as a parameter name.Copyright © 2011–2018 The Apache Software Foundation. All rights reserved.