net.java.rdf.sommer
Class MapperManager

java.lang.Object
  net.java.rdf.sommer.MapperManager

public abstract class MapperManager
extends java.lang.Object

Author:

Henry Story

Field Summary

(package private) static Mapper.Init	deflt
protected static java.util.HashMap<java.lang.String,Mapping>	graphMapper We keep a map of graph name to mapper objects
protected static java.util.logging.Logger	log

Constructor Summary

MapperManager()

Method Summary

(package private) static Mapper.Init	getDefaultInit()
static Mapper	getMapperForGraph(Mapper.Init init, java.lang.String... urls) every Mapper specialises in mapping to a graph
static Mapper	getMapperForGraph(java.lang.String... url) every Mapper specialises in mapping to a graph or union of graphs
static RewriteMapper	getMapperForObject(java.lang.Object o) Deprecated. This was needed when the objects could not tell of themselves who their mapper was. They always had to go through this very slow method.
static void	outputAll() Output the content of all the graphs
static void	setDefaultInit(Mapper.Init defltInit)

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static transient java.util.logging.Logger log

graphMapper

protected static java.util.HashMap<java.lang.String,Mapping> graphMapper

We keep a map of graph name to mapper objects

deflt

static Mapper.Init deflt

Constructor Detail

MapperManager

public MapperManager()

Method Detail

getDefaultInit

static Mapper.Init getDefaultInit()

setDefaultInit

public static void setDefaultInit(Mapper.Init defltInit)

getMapperForGraph

public static Mapper getMapperForGraph(java.lang.String... url)

every Mapper specialises in mapping to a graph or union of graphs

Parameters:

url - the url for the graph(s) (should later also allow blank nodes. idea: if they start with '_:') the first url indicates the graph write operations are done in

Returns:

A Mapper

getMapperForGraph

public static Mapper getMapperForGraph(Mapper.Init init,
                                       java.lang.String... urls)

every Mapper specialises in mapping to a graph

Parameters:

init - the Initialiser for the mapper.

url - the url for the graph(s) (should later also allow blank nodes. idea: if they start with '_:') the first url indicates the graph write operations are done in

Returns:

A Mapper

getMapperForObject

public static RewriteMapper getMapperForObject(java.lang.Object o)

Deprecated. This was needed when the objects could not tell of themselves who their mapper was. They always had to go through this very slow method.

Every object o if mapped belongs to a graph. We may not need this later if we add information right into the object concerning which field the object is mapped to. For the moment this is a call for the rewriter only.

Parameters:

o -

Returns:

The RewriteMapper in which the object is mapped, or null

outputAll

public static void outputAll()

Output the content of all the graphs