Package 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	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	Description
IteratorUtil()

Method Summary

Modifier and Type	Method	Description
static List<IteratorSetting>	decodeIteratorSettings(byte[] enc)
static byte[]	encodeIteratorSettings(List<IteratorSetting> iterators)
static byte[]	encodeIteratorSettings(IteratorConfig iterators)
static Map<String,String>	generateInitialTableProperties(boolean limitVersion)	Generate the initial (default) properties for a table
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(IteratorUtil.IteratorScope scope, SortedKeyValueIterator<K,V> source, KeyExtent extent, AccumuloConfiguration conf, List<IterInfo> ssiList, Map<String,Map<String,String>> ssio, IteratorEnvironment env, boolean useAccumuloClassLoader, String classLoaderContext)
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(SortedKeyValueIterator<K,V> source, Collection<IterInfo> iters, Map<String,Map<String,String>> iterOpts, IteratorEnvironment env, boolean useAccumuloClassLoader, String context)
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, Map<String,Class<? extends SortedKeyValueIterator<K,V>>> classCache)
static Range	maximizeStartKeyTimeStamp(Range range)
static void	mergeIteratorConfig(List<IterInfo> destList, Map<String,Map<String,String>> destOpts, List<IterInfo> tableIters, Map<String,Map<String,String>> tableOpts, List<IterInfo> ssi, Map<String,Map<String,String>> ssio)
static Range	minimizeEndKeyTimeStamp(Range range)
static void	parseIterConf(IteratorUtil.IteratorScope scope, List<IterInfo> iters, Map<String,Map<String,String>> allOptions, AccumuloConfiguration conf)
static SortedKeyValueIterator<Key,Value>	setupSystemScanIterators(SortedKeyValueIterator<Key,Value> source, Set<Column> cols, Authorizations auths, byte[] defaultVisibility)
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

mergeIteratorConfig

public static void mergeIteratorConfig(List<IterInfo> destList,
                                       Map<String,Map<String,String>> destOpts,
                                       List<IterInfo> tableIters,
                                       Map<String,Map<String,String>> tableOpts,
                                       List<IterInfo> ssi,
                                       Map<String,Map<String,String>> ssio)

parseIterConf

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

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(IteratorUtil.IteratorScope scope,
                                                                                                                                                                   SortedKeyValueIterator<K,V> source,
                                                                                                                                                                   KeyExtent extent,
                                                                                                                                                                   AccumuloConfiguration conf,
                                                                                                                                                                   List<IterInfo> ssiList,
                                                                                                                                                                   Map<String,Map<String,String>> ssio,
                                                                                                                                                                   IteratorEnvironment env,
                                                                                                                                                                   boolean useAccumuloClassLoader,
                                                                                                                                                                   String classLoaderContext)
                                                                                                                                                            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

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,
                                                                                                                                                                   Map<String,Class<? extends SortedKeyValueIterator<K,V>>> classCache)
                                                                                                                                                            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)

setupSystemScanIterators

public static SortedKeyValueIterator<Key,Value> setupSystemScanIterators(SortedKeyValueIterator<Key,Value> source,
                                                                               Set<Column> cols,
                                                                               Authorizations auths,
                                                                               byte[] defaultVisibility)
                                                                        throws IOException

Throws:

IOException