Package org.apache.accumulo.core.iteratorsImpl

Class IteratorConfigUtil

java.lang.Object

org.apache.accumulo.core.iteratorsImpl.IteratorConfigUtil

public class IteratorConfigUtil
extends Object

Utility class for configuring iterators. These methods were moved from IteratorUtil so that it could be treated as API.

Field Summary

Fields

Modifier and Type	Field	Description
static Comparator<IterInfo>	ITER_INFO_COMPARATOR

Constructor Summary

Constructors

Constructor	Description
IteratorConfigUtil()

Method Summary

Modifier and Type	Method	Description
static SortedKeyValueIterator<Key,Value>	convertItersAndLoad(IteratorUtil.IteratorScope scope, SortedKeyValueIterator<Key,Value> source, AccumuloConfiguration conf, List<IteratorSetting> iterators, IteratorEnvironment env)	Convert the list of iterators to IterInfo objects and then load the stack.
static Map<String,String>	generateInitialTableProperties(boolean limitVersion)	Generate the initial (default) properties for a table
static Property	getProperty(IteratorUtil.IteratorScope scope)	Fetch the correct configuration key prefix for the given scope.
static SortedKeyValueIterator<Key,Value>	loadIterators(SortedKeyValueIterator<Key,Value> source, IteratorBuilder iteratorBuilder)	Load a stack of iterators provided in the iterator builder, starting with source.
static IteratorBuilder.IteratorBuilderEnv	loadIterConf(IteratorUtil.IteratorScope scope, List<IterInfo> iters, Map<String,Map<String,String>> iterOpts, AccumuloConfiguration conf)
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 List<IterInfo>	parseIterConf(IteratorUtil.IteratorScope scope, List<IterInfo> iters, Map<String,Map<String,String>> allOptions, AccumuloConfiguration conf)

Methods inherited from class java.lang.Object

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

Field Detail

ITER_INFO_COMPARATOR

public static final Comparator<IterInfo> ITER_INFO_COMPARATOR

Constructor Detail

IteratorConfigUtil

public IteratorConfigUtil()

Method Detail

getProperty

public static Property getProperty(IteratorUtil.IteratorScope scope)

Fetch the correct configuration key prefix for the given scope. Throws an IllegalArgumentException if no property exists for the given scope.

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

parseIterConf

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

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)

loadIterConf

public static IteratorBuilder.IteratorBuilderEnv loadIterConf(IteratorUtil.IteratorScope scope,
                                                              List<IterInfo> iters,
                                                              Map<String,Map<String,String>> iterOpts,
                                                              AccumuloConfiguration conf)

convertItersAndLoad

public static SortedKeyValueIterator<Key,Value> convertItersAndLoad(IteratorUtil.IteratorScope scope,
                                                                          SortedKeyValueIterator<Key,Value> source,
                                                                          AccumuloConfiguration conf,
                                                                          List<IteratorSetting> iterators,
                                                                          IteratorEnvironment env)
                                                                   throws IOException

Convert the list of iterators to IterInfo objects and then load the stack.

Throws:

IOException

loadIterators

public static SortedKeyValueIterator<Key,Value> loadIterators(SortedKeyValueIterator<Key,Value> source,
                                                                    IteratorBuilder iteratorBuilder)
                                                             throws IOException

Load a stack of iterators provided in the iterator builder, starting with source.

Throws:

IOException