GridAbstractCalculationEngine
Inheritance: java.lang.Object
public abstract class GridAbstractCalculationEngine
Represents user’s custom calculation engine to extend the default calculation engine of Aspose.Cells.
Remarks
User should not modify any part of the Workbook directly in this implementation(except the calculated result of the custom function, which can be set by GridCalculationData.CalculatedValue property). Otherwise unexpected result or Exception may be caused. If user needs to change other data than calculated result in the implementation for some custom functions, For example, change cell’s formula, style, …etc., user should gather those data in this implementation and change them out of the scope of formula calculation.
Example
class MyEngine extends GridAbstractCalculationEngine
{
public /*override*/ void calculate(GridCalculationData data)
{
String funcName = data.getFunctionName().toUpperCase();
if ("MYFUNC".equals(funcName))
{
//do calculation for MYFUNC here
int count = data.getParamCount();
Object res = null;
for (int i = 0; i <count; i++)
{
Object pv = data.getParamValue(i);
if (pv instanceof GridReferredArea)
{
GridReferredArea ra = (GridReferredArea)pv;
pv = ra.getValue(0, 0);
}
//process the parameter here
//res = ...;
}
data.setCalculatedValue(res);
}
}
}
Constructors
| Constructor | Description |
|---|---|
| GridAbstractCalculationEngine() |
Methods
| Method | Description |
|---|---|
| calculate(GridCalculationData data) | Calculates one function with given data. |
| equals(Object arg0) | |
| getClass() | |
| hashCode() | |
| notify() | |
| notifyAll() | |
| toString() | |
| wait() | |
| wait(long arg0) | |
| wait(long arg0, int arg1) |
GridAbstractCalculationEngine()
public GridAbstractCalculationEngine()
calculate(GridCalculationData data)
public abstract void calculate(GridCalculationData data)
Calculates one function with given data.
Remarks
User should set the calculated value for given data for all functions(including excel native functions) that he wants to calculate by himself in this implementation.
Parameters:
| Parameter | Type | Description |
|---|---|---|
| data | GridCalculationData | The required data to calculate function such as function name, parameters, …etc. |
equals(Object arg0)
public boolean equals(Object arg0)
Parameters:
| Parameter | Type | Description |
|---|---|---|
| arg0 | java.lang.Object |
Returns: boolean
getClass()
public final native Class<?> getClass()
Returns: java.lang.Class
hashCode()
public native int hashCode()
Returns: int
notify()
public final native void notify()
notifyAll()
public final native void notifyAll()
toString()
public String toString()
Returns: java.lang.String
wait()
public final void wait()
wait(long arg0)
public final native void wait(long arg0)
Parameters:
| Parameter | Type | Description |
|---|---|---|
| arg0 | long |
wait(long arg0, int arg1)
public final void wait(long arg0, int arg1)
Parameters:
| Parameter | Type | Description |
|---|---|---|
| arg0 | long | |
| arg1 | int |