org.aksw.sparqlify.database

Class PrefixIndex<T>

java.lang.Object

org.aksw.sparqlify.database.PrefixIndex<T>

All Implemented Interfaces:

Index<T>

public class PrefixIndex<T>
extends Object
implements Index<T>

Constructor Summary

Constructors

Constructor and Description
PrefixIndex(Table<T> table, int[] indexColumns, org.apache.commons.collections15.Transformer<T,Set<String>> prefixExtractor)

Method Summary

Methods

Modifier and Type	Method and Description
void	add(List<? extends T> row)
static <T> PrefixIndex<T>	attach(org.apache.commons.collections15.Transformer<T,Set<String>> prefixExtractor, Table<T> table, String... columnNames)
List<String>	getIndexColumnNames()
int[]	getIndexColumns()
IndexMetaNode	getRoot()
Object	getStore()
Table<T>	getTable()
void	index(String... row)
void	lookup(Constraint... constraints) The constraints given as arguments are interpreted as conjunctions.
Collection<List<T>>	lookup(List<Set<String>> prefixesList)
void	lookup(List<Set<String>> prefixesList, int i, NavigableMap<String,Object> current, Collection<List<T>> result)
void	lookupRemaining(Object tmp, int i, Collection<List<T>> result)
Collection<List<T>>	lookupSimple(List<String> prefixList)
void	lookupSimple(List<String> prefixList, int i, Object tmp, Collection<List<T>> result)
Collection<List<T>>	lookupSimpleLonger(List<String> prefixList)
void	lookupSimpleLonger(List<String> prefixList, int i, NavigableMap<String,Object> current, Collection<List<T>> result)
void	postAdd(List<? extends T> row)
boolean	preAdd(List<? extends T> row) Only table should call this.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

PrefixIndex

public PrefixIndex(Table<T> table,
           int[] indexColumns,
           org.apache.commons.collections15.Transformer<T,Set<String>> prefixExtractor)

Method Detail

index

public void index(String... row)

add

public void add(List<? extends T> row)

Specified by:

add in interface Index<T>

lookup

public void lookup(Constraint... constraints)

The constraints given as arguments are interpreted as conjunctions. The set of prefixes within a constraint is interpreted as a disjunction.

Parameters:

constraints -

lookupSimple

public Collection<List<T>> lookupSimple(List<String> prefixList)

lookupSimpleLonger

public Collection<List<T>> lookupSimpleLonger(List<String> prefixList)

lookupSimple

public void lookupSimple(List<String> prefixList,
                int i,
                Object tmp,
                Collection<List<T>> result)

lookupSimpleLonger

public void lookupSimpleLonger(List<String> prefixList,
                      int i,
                      NavigableMap<String,Object> current,
                      Collection<List<T>> result)

lookupRemaining

public void lookupRemaining(Object tmp,
                   int i,
                   Collection<List<T>> result)

lookup

public Collection<List<T>> lookup(List<Set<String>> prefixesList)

lookup

public void lookup(List<Set<String>> prefixesList,
          int i,
          NavigableMap<String,Object> current,
          Collection<List<T>> result)

attach

public static <T> PrefixIndex<T> attach(org.apache.commons.collections15.Transformer<T,Set<String>> prefixExtractor,
                        Table<T> table,
                        String... columnNames)

preAdd

public boolean preAdd(List<? extends T> row)

Description copied from interface: Index

Only table should call this. Return true to accept the row, false to reject it

Specified by:

preAdd in interface Index<T>

Returns:

postAdd

public void postAdd(List<? extends T> row)

Specified by:

postAdd in interface Index<T>

getTable

public Table<T> getTable()

Specified by:

getTable in interface Index<T>

getIndexColumns

public int[] getIndexColumns()

Specified by:

getIndexColumns in interface Index<T>

getIndexColumnNames

public List<String> getIndexColumnNames()

Specified by:

getIndexColumnNames in interface Index<T>

toString

public String toString()

Overrides:

toString in class Object

getRoot

public IndexMetaNode getRoot()

Specified by:

getRoot in interface Index<T>

getStore

public Object getStore()

Specified by:

getStore in interface Index<T>