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java.lang.Objectcom.sciapp.tree.TreeTableModel.RowComparator
public class TreeTableModel.RowComparator
RowComparator compares row data based on a single column. This column is passed as an argument in the constructor and can also be changed with setColumn. If the column is -1, the compare method always return -1, which implies that rows will never be grouped (since they are all different).
Constructor Summary | |
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TreeTableModel.RowComparator(int field)
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Method Summary | |
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int |
compare(Object o1,
Object o2)
Compares its two arguments for order. |
int |
getColumn()
Returns the column to use when comparing rows. |
void |
setColumn(int column)
Set the column to use when comparing rows. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface java.util.Comparator |
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equals |
Constructor Detail |
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public TreeTableModel.RowComparator(int field)
Method Detail |
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public int compare(Object o1, Object o2)
The implementor must ensure that sgn(compare(x, y)) == -sgn(compare(y, x)) for all x and y. (This implies that compare(x, y) must throw an exception if and only if compare(y, x) throws an exception.)
The implementor must also ensure that the relation is transitive: ((compare(x, y)>0) && (compare(y, z)>0)) implies compare(x, z)>0.
Finally, the implementer must ensure that compare(x, y)==0 implies that sgn(compare(x, z))==sgn(compare(y, z)) for all z.
It is generally the case, but not strictly required that (compare(x, y)==0) == (x.equals(y)). Generally speaking, any comparator that violates this condition should clearly indicate this fact. The recommended language is "Note: this comparator imposes orderings that are inconsistent with equals."
compare
in interface Comparator
o1
- the first object to be compared.o2
- the second object to be compared.
public void setColumn(int column)
column
- the columnpublic int getColumn()
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