ch.ethz.mxquery.sms.interfaces
Interface RandomRead

All Superinterfaces:

ReadInterface

All Known Implementing Classes:

IndexFIFOStore, LazyRandomFIFOStore, LazySequentialFIFOStore, RandomFIFOStore, RandomFIFOStoreSchema, SeqFIFOStore, SharedRandomFIFOStore, SharedSeqFIFOStore

public interface RandomRead
extends ReadInterface

Method Summary

Token	get(int tokenId, int eNode) Returns a token for a specific Token id if it is not outside the end node id
int	getAttributePosFromNodeId(java.lang.String attrName, int nodeId) For an attribute given by name, tries to guess the token id in the buffer
int	getAttributePosFromTokenId(java.lang.String attrName, int activeTokenId) For an attribute given by name, tries to guess the token id in the buffer
int	getNodeIdFromTokenId(int lastKnowNodeId, int activetokenId) Returns the node id for a given token id
int	getTokenIdForNode(int nodeId) Gets the first token id for a given node id
boolean	hasNode(int node) Checks if the node with the given id exits

Method Detail

getTokenIdForNode

int getTokenIdForNode(int nodeId)
                      throws MXQueryException

Gets the first token id for a given node id

Parameters:

nodeId -

Returns:

first element id

Throws:

MXQueryException

hasNode

boolean hasNode(int node)
                throws MXQueryException

Checks if the node with the given id exits

Parameters:

node -

Returns:

true if a with the given id exists

Throws:

MXQueryException

get

Token get(int tokenId,
          int eNode)
          throws MXQueryException

Returns a token for a specific Token id if it is not outside the end node id

Parameters:

tokenId -

eNode -

Returns:

the token, if it falls into the requested rane

Throws:

MXQueryException

getNodeIdFromTokenId

int getNodeIdFromTokenId(int lastKnowNodeId,
                         int activetokenId)
                         throws MXQueryException

Returns the node id for a given token id

Parameters:

lastKnowNodeId - Ist jus a hint to find the token id faster. If you have no clue use 0

activetokenId -

Returns:

the token Id

Throws:

MXQueryException

getAttributePosFromTokenId

int getAttributePosFromTokenId(java.lang.String attrName,
                               int activeTokenId)
                               throws MXQueryException

For an attribute given by name, tries to guess the token id in the buffer

Parameters:

attrName - - name of the attribute

activeTokenId - - last known token id

Returns:

the supposed position for the attribute given as parameter or -1 if no knowledge is available at the time of request

Throws:

MXQueryException

getAttributePosFromNodeId

int getAttributePosFromNodeId(java.lang.String attrName,
                              int nodeId)
                              throws MXQueryException

For an attribute given by name, tries to guess the token id in the buffer

Parameters:

attrName - - name of the attribute

nodeId - - last known node id

Returns:

the supposed position for the attribute given as parameter or -1 if no knowledge is available at the time of request

Throws:

MXQueryException