org.apache.accumulo.core.iterators

Class IteratorUtil

java.lang.Object

org.apache.accumulo.core.iterators.IteratorUtil

public class IteratorUtil
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	IteratorUtil.IteratorScope Even though this type is not in a public API package, its used by methods in the public API.
static class	IteratorUtil.IterInfoComparator

Constructor Summary

Constructors

Constructor and Description
IteratorUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static List<IteratorSetting>	decodeIteratorSettings(byte[] enc)
static byte[]	encodeIteratorSettings(IteratorConfig iterators)
static byte[]	encodeIteratorSettings(List<IteratorSetting> iterators)
static String	findIterator(IteratorUtil.IteratorScope scope, String className, AccumuloConfiguration conf, Map<String,String> opts)
static Map<String,String>	generateInitialTableProperties(boolean limitVersion) Generate the initial (default) properties for a table
static int	getMaxPriority(IteratorUtil.IteratorScope scope, AccumuloConfiguration conf)
static <K extends org.apache.hadoop.io.WritableComparable<?>,V extends org.apache.hadoop.io.Writable> SortedKeyValueIterator<K,V>	loadIterators(IteratorUtil.IteratorScope scope, SortedKeyValueIterator<K,V> source, KeyExtent extent, AccumuloConfiguration conf, IteratorEnvironment env)
static <K extends org.apache.hadoop.io.WritableComparable<?>,V extends org.apache.hadoop.io.Writable> SortedKeyValueIterator<K,V>	loadIterators(IteratorUtil.IteratorScope scope, SortedKeyValueIterator<K,V> source, KeyExtent extent, AccumuloConfiguration conf, List<IteratorSetting> iterators, IteratorEnvironment env)
static <K extends org.apache.hadoop.io.WritableComparable<?>,V extends org.apache.hadoop.io.Writable> SortedKeyValueIterator<K,V>	loadIterators(IteratorUtil.IteratorScope scope, SortedKeyValueIterator<K,V> source, KeyExtent extent, AccumuloConfiguration conf, List<IterInfo> ssiList, Map<String,Map<String,String>> ssio, IteratorEnvironment env)
static <K extends org.apache.hadoop.io.WritableComparable<?>,V extends org.apache.hadoop.io.Writable> SortedKeyValueIterator<K,V>	loadIterators(IteratorUtil.IteratorScope scope, SortedKeyValueIterator<K,V> source, KeyExtent extent, AccumuloConfiguration conf, List<IterInfo> ssiList, Map<String,Map<String,String>> ssio, IteratorEnvironment env, boolean useAccumuloClassLoader)
static <K extends org.apache.hadoop.io.WritableComparable<?>,V extends org.apache.hadoop.io.Writable> SortedKeyValueIterator<K,V>	loadIterators(SortedKeyValueIterator<K,V> source, Collection<IterInfo> iters, Map<String,Map<String,String>> iterOpts, IteratorEnvironment env, boolean useAccumuloClassLoader, String context)
static Range	maximizeStartKeyTimeStamp(Range range)
static Range	minimizeEndKeyTimeStamp(Range range)
protected static void	parseIterConf(IteratorUtil.IteratorScope scope, List<IterInfo> iters, Map<String,Map<String,String>> allOptions, AccumuloConfiguration conf)
static IteratorConfig	toIteratorConfig(List<IteratorSetting> iterators)
static IteratorSetting	toIteratorSetting(TIteratorSetting tis)
static List<IteratorSetting>	toIteratorSettings(IteratorConfig ic)
static TIteratorSetting	toTIteratorSetting(IteratorSetting is)

Methods inherited from class java.lang.Object

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

Constructor Detail

IteratorUtil

public IteratorUtil()

Method Detail

generateInitialTableProperties

public static Map<String,String> generateInitialTableProperties(boolean limitVersion)

Generate the initial (default) properties for a table

Parameters:

limitVersion - include a VersioningIterator at priority 20 that retains a single version of a given K/V pair.

Returns:

A map of Table properties

getMaxPriority

public static int getMaxPriority(IteratorUtil.IteratorScope scope,
                 AccumuloConfiguration conf)

parseIterConf

protected static void parseIterConf(IteratorUtil.IteratorScope scope,
                 List<IterInfo> iters,
                 Map<String,Map<String,String>> allOptions,
                 AccumuloConfiguration conf)

findIterator

public static String findIterator(IteratorUtil.IteratorScope scope,
                  String className,
                  AccumuloConfiguration conf,
                  Map<String,String> opts)

loadIterators

public static <K extends org.apache.hadoop.io.WritableComparable<?>,V extends org.apache.hadoop.io.Writable> SortedKeyValueIterator<K,V> loadIterators(IteratorUtil.IteratorScope scope,
                                                                                                                                       SortedKeyValueIterator<K,V> source,
                                                                                                                                       KeyExtent extent,
                                                                                                                                       AccumuloConfiguration conf,
                                                                                                                                       IteratorEnvironment env)
                                                                                                                                          throws IOException

Throws:

IOException

loadIterators

public static <K extends org.apache.hadoop.io.WritableComparable<?>,V extends org.apache.hadoop.io.Writable> SortedKeyValueIterator<K,V> loadIterators(IteratorUtil.IteratorScope scope,
                                                                                                                                       SortedKeyValueIterator<K,V> source,
                                                                                                                                       KeyExtent extent,
                                                                                                                                       AccumuloConfiguration conf,
                                                                                                                                       List<IteratorSetting> iterators,
                                                                                                                                       IteratorEnvironment env)
                                                                                                                                          throws IOException

Throws:

IOException

loadIterators

public static <K extends org.apache.hadoop.io.WritableComparable<?>,V extends org.apache.hadoop.io.Writable> SortedKeyValueIterator<K,V> loadIterators(IteratorUtil.IteratorScope scope,
                                                                                                                                       SortedKeyValueIterator<K,V> source,
                                                                                                                                       KeyExtent extent,
                                                                                                                                       AccumuloConfiguration conf,
                                                                                                                                       List<IterInfo> ssiList,
                                                                                                                                       Map<String,Map<String,String>> ssio,
                                                                                                                                       IteratorEnvironment env)
                                                                                                                                          throws IOException

Throws:

IOException

loadIterators

public static <K extends org.apache.hadoop.io.WritableComparable<?>,V extends org.apache.hadoop.io.Writable> SortedKeyValueIterator<K,V> loadIterators(IteratorUtil.IteratorScope scope,
                                                                                                                                       SortedKeyValueIterator<K,V> source,
                                                                                                                                       KeyExtent extent,
                                                                                                                                       AccumuloConfiguration conf,
                                                                                                                                       List<IterInfo> ssiList,
                                                                                                                                       Map<String,Map<String,String>> ssio,
                                                                                                                                       IteratorEnvironment env,
                                                                                                                                       boolean useAccumuloClassLoader)
                                                                                                                                          throws IOException

Throws:

IOException

loadIterators

public static <K extends org.apache.hadoop.io.WritableComparable<?>,V extends org.apache.hadoop.io.Writable> SortedKeyValueIterator<K,V> loadIterators(SortedKeyValueIterator<K,V> source,
                                                                                                                                       Collection<IterInfo> iters,
                                                                                                                                       Map<String,Map<String,String>> iterOpts,
                                                                                                                                       IteratorEnvironment env,
                                                                                                                                       boolean useAccumuloClassLoader,
                                                                                                                                       String context)
                                                                                                                                          throws IOException

Throws:

IOException

maximizeStartKeyTimeStamp

public static Range maximizeStartKeyTimeStamp(Range range)

minimizeEndKeyTimeStamp

public static Range minimizeEndKeyTimeStamp(Range range)

toTIteratorSetting

public static TIteratorSetting toTIteratorSetting(IteratorSetting is)

toIteratorSetting

public static IteratorSetting toIteratorSetting(TIteratorSetting tis)

toIteratorConfig

public static IteratorConfig toIteratorConfig(List<IteratorSetting> iterators)

toIteratorSettings

public static List<IteratorSetting> toIteratorSettings(IteratorConfig ic)

encodeIteratorSettings

public static byte[] encodeIteratorSettings(IteratorConfig iterators)

encodeIteratorSettings

public static byte[] encodeIteratorSettings(List<IteratorSetting> iterators)

decodeIteratorSettings

public static List<IteratorSetting> decodeIteratorSettings(byte[] enc)