jet.formula
Class fRange
java.lang.Object
jet.connect.DbValue
jet.formula.fArray
jet.formula.fRange
- All Implemented Interfaces:
- jet.util.DbValueable, jet.util.QuickSortableNode
- Direct Known Subclasses:
- fBoolRange, fCurRange, fDateRange, fDateTimeRange, fIntRange, fNumRange, fStrRange, fTimeRange
public abstract class fRange
- extends fArray
Range is a special data type of formula variable which is mainly used to
specify the index of the sub-array of an array.
A range has two elements, the beginning index and the end index of the target array.
If bNull attribute of the two elements of the Range are not true, the Range is a valid Range.
If the value of either element of the Range is null, it means negative or positive infinite.
| Fields inherited from interface jet.util.DbValueable |
EQUAL, GREATER, LESS |
|
Method Summary |
java.lang.String |
toString()
Converts the value to string. |
| Methods inherited from class jet.formula.fArray |
compareTo, equals, getArray, getArray, getInstance, isAll, set, set, set, setIsAll, setValue, toStringValue |
| Methods inherited from class jet.connect.DbValue |
clone, compareTo, compareTo, equals, getColDesc, getPrecision, getScale, getSqlType, isCurrency, isNull, makeDbValue, set, setColDesc, setfoo, setNull, setValue |
| Methods inherited from class java.lang.Object |
getClass, hashCode, notify, notifyAll, wait, wait, wait |
fRange
public fRange()
- Creates an empty range object.
fRange
public fRange(int arraysize)
- Parameters:
arraysize - if the value does not equal to two, an IllegalArgumentException will be thrown.
fRange
public fRange(DbValue end,
DbValue begin)
- The bNull remains true after calling this method.
- Parameters:
end - begin -
fRange
public fRange(DbValue[] val,
boolean b)
- Parameters:
val - The element 0 is the beginning index, and the element 1 is the end.
If any array has less or more elements, an IllegalArgumentException will be thrown.b - the bNull flag of this range object
toString
public java.lang.String toString()
- Description copied from class:
DbValue
- Converts the value to string.
- Overrides:
toString in class fArray