org.zkoss.poi.ss.formula

Interface DependencyTracker

All Known Implementing Classes:

DependencyTrackerEx, DependencyTrackerImpl

public interface DependencyTracker

Interface for constructing the formula dependency.

Author:

Henri Chen (henrichen at zkoss dot org) - dependency tracking

Method Summary

Modifier and Type	Method and Description
void	addDependency(OperationEvaluationContext ec, Ptg[] ptgs) Construct formula reference dependencies.
void	clearIndirectRefPrecedent(OperationEvaluationContext ec) Clear precedent for a IndirectRef
ValueEval	postProcessValueEval(OperationEvaluationContext ec, ValueEval opResult, boolean eval) Callback when evaluating a formula cell.
void	setIndirectRefPrecedent(OperationEvaluationContext ec, ValueEval precedent) Sets precedent for a IndirectRef

Method Detail

postProcessValueEval

ValueEval postProcessValueEval(OperationEvaluationContext ec,
                               ValueEval opResult,
                               boolean eval)

Callback when evaluating a formula cell.

Parameters:

ec - the evaluation context of the evaluated formula cell.

opResult - the precedent that might change the formula cell.

eval - whether this reference is an evaluated result(e.g. from INDIRECT() function(true), or directly specified in formula(false))

Returns:

the ValueEval after the dependency checking

addDependency

void addDependency(OperationEvaluationContext ec,
                   Ptg[] ptgs)

Construct formula reference dependencies.

Parameters:

ec - the evaluation context of the evaluated formula cell.

ptgs - the precedent that might change the formula cell.

clearIndirectRefPrecedent

void clearIndirectRefPrecedent(OperationEvaluationContext ec)

Clear precedent for a IndirectRef

Parameters:

ec -

Since:

3.9.6

setIndirectRefPrecedent

void setIndirectRefPrecedent(OperationEvaluationContext ec,
                             ValueEval precedent)

Sets precedent for a IndirectRef

Parameters:

ec -

precedent -

Since:

3.9.6