ch.ethz.mxquery.sms.MMimpl
Class IndexInPlaceStore

java.lang.Object
  ch.ethz.mxquery.sms.MMimpl.InPlaceStore
      ch.ethz.mxquery.sms.MMimpl.IndexInPlaceStore

All Implemented Interfaces:

Source, IndexInterface, IndexRead, IndexUpdate, ReadInterface, StreamStore

public class IndexInPlaceStore
extends InPlaceStore
implements IndexRead

Field Summary

Fields inherited from class ch.ethz.mxquery.sms.MMimpl.InPlaceStore

id

Constructor Summary

IndexInPlaceStore(int id, WindowBuffer container)

Method Summary

void	buffer(Token tok, int event) Materialize the given token into the store instance
Token	get(int pos) Get Token at given position
void	newItem() Specify the beginning of a new item
IndexSchema	registerIndex(IndexSchema schema) Index schema registration for read/update operations
XDMIterator	retrieve(IndexSchema schema, Token[] tokens)
void	setDefaultValues(Token[] tokens)
void	setIterator(XDMIterator it) For pull stores, add the iterator from which they should pull their data
void	update(IndexSchema schema, Token[] toks, Token[] forIndex) Update the store with new data

Methods inherited from class ch.ethz.mxquery.sms.MMimpl.InPlaceStore

compare, copySource, getIterator, getMyId, getURI

Methods inherited from class java.lang.Object

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

Constructor Detail

IndexInPlaceStore

public IndexInPlaceStore(int id,
                         WindowBuffer container)

Method Detail

setDefaultValues

public void setDefaultValues(Token[] tokens)

update

public void update(IndexSchema schema,
                   Token[] toks,
                   Token[] forIndex)
            throws MXQueryException

Description copied from interface: IndexUpdate

Update the store with new data

Specified by:

update in interface IndexUpdate

Parameters:

schema - Index schema used in finding the items that are to be updated

toks - Iterator with data to be updated

forIndex - Actual values for the attributes to be used in searching

Throws:

MXQueryException

retrieve

public XDMIterator retrieve(IndexSchema schema,
                            Token[] tokens)
                     throws MXQueryException

Specified by:

retrieve in interface IndexRead

Returns:

iterator with requested data

Throws:

MXQueryException

get

public Token get(int pos)

Description copied from interface: StreamStore

Get Token at given position

Specified by:

get in interface StreamStore

Parameters:

pos - Unique id given to the token inside this store instance (token position

Returns:

the Token at the given position

newItem

public void newItem()

Description copied from interface: StreamStore

Specify the beginning of a new item

Specified by:

newItem in interface StreamStore

buffer

public void buffer(Token tok,
                   int event)
            throws MXQueryException

Description copied from interface: StreamStore

Materialize the given token into the store instance

Specified by:

buffer in interface StreamStore

Throws:

MXQueryException

registerIndex

public IndexSchema registerIndex(IndexSchema schema)

Description copied from interface: IndexInterface

Index schema registration for read/update operations

Specified by:

registerIndex in interface IndexInterface

Parameters:

schema - for index construction

Returns:

-1 if error, else unique index id value ( id >= 0)

setIterator

public void setIterator(XDMIterator it)
                 throws MXQueryException

Description copied from interface: StreamStore

For pull stores, add the iterator from which they should pull their data

Specified by:

setIterator in interface StreamStore

Throws:

MXQueryException