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java.lang.Objectcom.sciapp.tree.TreeTableComparator
com.sciapp.tree.DefaultTreeTableComparator
public class DefaultTreeTableComparator
DefaultTreeTableComparator 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.
Field Summary | |
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protected int |
column
the column to use when comparing rows |
Fields inherited from class com.sciapp.tree.TreeTableComparator |
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model |
Constructor Summary | |
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DefaultTreeTableComparator(TreeTableModel model,
int column)
Constructs a DefaultTreeTableComparator object with column as
the column to use when comparing rows. |
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. |
boolean |
isGroupedByColumn(int column)
Returns true if column was used by this comparator in order
to group the rows of a TreeTable component. |
void |
setColumn(int column)
Sets the column to use when comparing rows. |
String |
toString()
Returns a string representation of the object. |
Methods inherited from class com.sciapp.tree.TreeTableComparator |
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getModel, setModel |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface java.util.Comparator |
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equals |
Field Detail |
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protected int column
Constructor Detail |
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public DefaultTreeTableComparator(TreeTableModel model, int column)
column
as
the column to use when comparing rows.
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."
o1
- the first object to be compared.o2
- the second object to be compared.
public int getColumn()
public boolean isGroupedByColumn(int column)
column
was used by this comparator in order
to group the rows of a TreeTable component.
isGroupedByColumn
in class TreeTableComparator
column
- the index of the column
public void setColumn(int column)
column
- the columnpublic String toString()
toString
method returns a string that
"textually represents" this object. The result should
be a concise but informative representation that is easy for a
person to read.
It is recommended that all subclasses override this method.
The toString
method for class Object
returns a string consisting of the name of the class of which the
object is an instance, the at-sign character `@
', and
the unsigned hexadecimal representation of the hash code of the
object. In other words, this method returns a string equal to the
value of:
getClass().getName() + '@' + Integer.toHexString(hashCode())
toString
in class Object
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