jet.formula

Class fRange

java.lang.Object

jet.connect.DbValue

jet.formula.fArray

jet.formula.fRange

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.

Field Summary

Fields inherited from class jet.formula.fArray

value

Fields inherited from class jet.connect.DbValue

BIGINT_DESC, bNull, CHAR_DESC, CURRENCY_DESC, DATE_DESC, desc, DOUBLE_DESC, INTEGER_DESC, TIME_DESC

Constructor Summary

Constructors

Constructor and Description
fRange() Creates an empty range object.
fRange(DbValue[] val, boolean b)
fRange(DbValue end, DbValue begin) The bNull remains true after calling this method.
fRange(int arraysize)

Method Summary

Modifier and Type	Method and Description
java.lang.String	toString() Converts the value to string.

Methods inherited from class jet.formula.fArray

compareTo, compareTo, equals, get, getArray, getArray, getInstance, isAll, set, set, set, setIsAll, setValue, toString, toStringValue

Methods inherited from class jet.connect.DbValue

clone, equals, getColDesc, getDataTimeZone, 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

Constructor Detail

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

Method Detail

toString

public java.lang.String toString()

Description copied from class: DbValue

Converts the value to string.

Overrides:

toString in class fArray