ch.ethz.mxquery.model.updatePrimitives
Class PendingUpdateList

java.lang.Object
  ch.ethz.mxquery.model.updatePrimitives.PendingUpdateList

public class PendingUpdateList
extends java.lang.Object

Constructor Summary

PendingUpdateList(QueryLocation loc)

Method Summary

void	add(UpdatePrimitive up)
void	apply() Applies all updates.
boolean	checkStoreUsage(Set stores) Check if all the updates contained in the PUL are working against the stores given as parameter
void	clear() Removes all update primitives from this pending update list.
void	merge(PendingUpdateList pul) Merges the a pending updating list with this list

Methods inherited from class java.lang.Object

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

Constructor Detail

PendingUpdateList

public PendingUpdateList(QueryLocation loc)

Method Detail

add

public void add(UpdatePrimitive up)
         throws MXQueryException

Throws:

MXQueryException

apply

public void apply()
           throws MXQueryException

Applies all updates. Important: Because an update should not be executed twice, the list is cleared afterwards.

Throws:

MXQueryException

clear

public void clear()

Removes all update primitives from this pending update list.

merge

public void merge(PendingUpdateList pul)
           throws MXQueryException

Merges the a pending updating list with this list

Parameters:

pul - pending update list that has to be merge to this.

Throws:

MXQueryException

checkStoreUsage

public boolean checkStoreUsage(Set stores)

Check if all the updates contained in the PUL are working against the stores given as parameter

Parameters:

stores - Set of stores to check

Returns:

true if all updates work (only) against the stores given in stores, false otherwise