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java.lang.Object | +--algebraTree.Update | +--algebraTree.DataUpdate
A data update. This is logical only - the physical update should not have anything to do with this class!
Field Summary | |
protected Table |
after
if "before" is null, we have an add, if "after" is null, we have a delete, otherwise, we have an update. |
protected Table |
before
if "before" is null, we have an add, if "after" is null, we have a delete, otherwise, we have an update. |
Fields inherited from class algebraTree.Update |
relation |
Constructor Summary | |
DataUpdate(DataUpdate old)
copy constructor for update propagation |
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DataUpdate(java.lang.String relationP,
Table beforeP,
Table afterP)
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Method Summary | |
java.lang.String |
toString()
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Methods inherited from class java.lang.Object |
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Field Detail |
protected Table before
protected Table after
Constructor Detail |
public DataUpdate(java.lang.String relationP, Table beforeP, Table afterP)
public DataUpdate(DataUpdate old)
Method Detail |
public java.lang.String toString()
toString
in class java.lang.Object
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