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java.lang.Objectcom.mckoi.database.SelectableRangeSet
public final class SelectableRangeSet
Represents a complex normalized range of a list. This is essentially a set of SelectableRange objects that make up a complex view of a range. For example, say we had a query '(a > 10 and a < 20 and a <> 15) or a >= 50', we could represent this range by the following range set;
RANGE: AFTER_LAST_VALUE 10, BEFORE_FIRST_VALUE 15 RANGE: AFTER_LAST_VALUE 15, BEFORE_FIRST_VALUE 20 RANGE: FIRST_VALUE 50, LAST_VALUE LAST_IN_SET
The range is constructed by calls to 'intersect', and 'union'.
Constructor Summary | |
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SelectableRangeSet()
Constructs the SelectableRangeSet to a full range (a range that encompases all values). |
Method Summary | |
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void |
intersect(Operator op,
TObject val)
Intersects this range with the given Operator and value constraint. |
static void |
main(java.lang.String[] args)
A test application. |
SelectableRange[] |
toSelectableRangeArray()
Returns the range as an array of SelectableRange or an empty array if there is no range. |
java.lang.String |
toString()
Outputs this range as a string, for diagnostic and testing purposes. |
void |
union(Operator op,
TObject val)
Unions this range with the given Operator and value constraint. |
void |
union(SelectableRangeSet union_to)
Unions the current range set with the given range set. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public SelectableRangeSet()
Method Detail |
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public void intersect(Operator op, TObject val)
public void union(Operator op, TObject val)
public void union(SelectableRangeSet union_to)
public SelectableRange[] toSelectableRangeArray()
public java.lang.String toString()
toString
in class java.lang.Object
public static void main(java.lang.String[] args)
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