net.sourceforge.datagenerator.generator
Class NumberExpressionValueGenerator
java.lang.Object
net.sourceforge.datagenerator.ColumnValueGeneratorBase
net.sourceforge.datagenerator.generator.NumberExpressionValueGenerator
- All Implemented Interfaces:
- ColumnValueGenerator
- public class NumberExpressionValueGenerator
- extends ColumnValueGeneratorBase
The NumberExpressionValueGenerator generates values by evaluating an
numeric expression. The expression can be made up of the following operators :
'+', '-', '*', '/' and it can contain sub-expressions that are enclosed
in brackets. The actual values can be staticly specified or selected from
another columns' generated values.
Examples:
'2+3+4-5'
'(4+3*(5-1))/2-6'
'minimum+10000'
'Order.quantity*Order.unitPrice'
- Version:
- 0.6
- Author:
- Chris Nagy
Method Summary |
java.lang.String[] |
getDependencies()
Returns the columns that this generator needs values for before
it can generate a value. |
ColumnValue |
getNextColumnValue(int row,
java.util.Random r)
Returns the next generated value. |
static void |
main(java.lang.String[] args)
|
void |
setExpression(java.lang.String expression)
Set the expression. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
NumberExpressionValueGenerator
public NumberExpressionValueGenerator()
setExpression
public void setExpression(java.lang.String expression)
- Set the expression.
- Parameters:
expression
- the expression
getDependencies
public java.lang.String[] getDependencies()
- Description copied from interface:
ColumnValueGenerator
- Returns the columns that this generator needs values for before
it can generate a value.
- Returns:
- the list of column names
- See Also:
ColumnValueGenerator.getDependencies()
getNextColumnValue
public ColumnValue getNextColumnValue(int row,
java.util.Random r)
- Description copied from interface:
ColumnValueGenerator
- Returns the next generated value.
- Parameters:
row
- the row numberr
- a random number generator
- Returns:
- the next column value
- See Also:
ColumnValueGenerator.getNextColumnValue(int,java.util.Random)
main
public static void main(java.lang.String[] args)