Package org.apache.solr.search.stats

Class StatsUtil

java.lang.Object

org.apache.solr.search.stats.StatsUtil

public class StatsUtil
extends Object

Various utilities for de/serialization of term stats and collection stats.

TODO: serialization format is very simple and does nothing to compress the data.

Field Summary

Fields

Modifier and Type	Field	Description
static String	ENTRY_SEPARATOR
static char	ENTRY_SEPARATOR_CHAR
static char	ESCAPE
static char	ESCAPE_ENTRY_SEPARATOR

Constructor Summary

Constructors

Constructor	Description
StatsUtil()

Method Summary

Modifier and Type	Method	Description
static Map<String,CollectionStats>	colStatsMapFromString(String data)
static String	colStatsMapToString(Map<String,CollectionStats> stats)
static String	colStatsToString(CollectionStats colStats)	Make a String representation of CollectionStats
static String	decode(String value)
static String	encode(String value)
static Set<String>	fieldsFromString(String data)
static String	fieldsToString(Collection<String> fields)
static String	shardUrlToShard(String collectionName, String shardUrls)	Parse a list of urls separated by "|" in order to retrieve a shard name.
static org.apache.lucene.index.Term	termFromEncodedString(String data)
static Set<org.apache.lucene.index.Term>	termsFromEncodedString(String data)
static Map<String,TermStats>	termStatsMapFromString(String data)
static String	termStatsMapToString(Map<String,TermStats> stats)
static String	termStatsToString(TermStats termStats, boolean encode)
static String	termsToEncodedString(Collection<?> terms)
static String	termToEncodedString(String term)
static String	termToEncodedString(org.apache.lucene.index.Term t)

Methods inherited from class java.lang.Object

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

Field Detail

ENTRY_SEPARATOR

public static final String ENTRY_SEPARATOR

See Also:

Constant Field Values

ENTRY_SEPARATOR_CHAR

public static final char ENTRY_SEPARATOR_CHAR

See Also:

Constant Field Values

ESCAPE

public static final char ESCAPE

See Also:

Constant Field Values

ESCAPE_ENTRY_SEPARATOR

public static final char ESCAPE_ENTRY_SEPARATOR

See Also:

Constant Field Values

Constructor Detail

StatsUtil

public StatsUtil()

Method Detail

shardUrlToShard

public static String shardUrlToShard(String collectionName,
                                     String shardUrls)

Parse a list of urls separated by "|" in order to retrieve a shard name.

Parameters:

collectionName - collection name

shardUrls - list of urls

Returns:

shard name, or shardUrl if no shard info is present, or null if impossible to determine (eg. empty string)

termsToEncodedString

public static String termsToEncodedString(Collection<?> terms)

termsFromEncodedString

public static Set<org.apache.lucene.index.Term> termsFromEncodedString(String data)

fieldsFromString

public static Set<String> fieldsFromString(String data)

fieldsToString

public static String fieldsToString(Collection<String> fields)

colStatsToString

public static String colStatsToString(CollectionStats colStats)

Make a String representation of CollectionStats

termToEncodedString

public static String termToEncodedString(org.apache.lucene.index.Term t)

encode

public static String encode(String value)

decode

public static String decode(String value)
                     throws IOException

Throws:

IOException

termToEncodedString

public static String termToEncodedString(String term)

termFromEncodedString

public static org.apache.lucene.index.Term termFromEncodedString(String data)

termStatsToString

public static String termStatsToString(TermStats termStats,
                                       boolean encode)

colStatsMapFromString

public static Map<String,CollectionStats> colStatsMapFromString(String data)

colStatsMapToString

public static String colStatsMapToString(Map<String,CollectionStats> stats)

termStatsMapFromString

public static Map<String,TermStats> termStatsMapFromString(String data)

termStatsMapToString

public static String termStatsMapToString(Map<String,TermStats> stats)