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[basicprofiles] Fix division-by-zero error in $DELTA_PERCENT state filter #18089

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merged 5 commits into from
Feb 9, 2025
Merged

[basicprofiles] Fix division-by-zero error in $DELTA_PERCENT state filter #18089

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96fe905
[basicprofiles] Fix division-by-zero error in $DELTA_PERCENT state fi…
jimtng Jan 11, 2025
0e07cd4
remove duplicate tests
jimtng Feb 3, 2025
fe4886a
use Optional for acceptedState
jimtng Feb 3, 2025
5de032e
add empty checks
jimtng Feb 3, 2025
8c3a3b6
add javadoc
jimtng Feb 4, 2025
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18 changes: 9 additions & 9 deletions ...c/main/java/org/openhab/transform/basicprofiles/internal/profiles/StateFilterProfile.java
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Original file line number Diff line number Diff line change
Expand Up @@ -103,7 +103,7 @@ public class StateFilterProfile implements StateProfile {
private @Nullable Item linkedItem = null;

private State newState = UnDefType.UNDEF;
private State acceptedState = UnDefType.UNDEF;
private Optional<State> acceptedState = Optional.empty();
private LinkedList<State> previousStates = new LinkedList<>();

private final int windowSize;
Expand Down Expand Up @@ -230,7 +230,7 @@ private State checkCondition(State state) {
}

if (conditions.stream().allMatch(c -> c.check(state))) {
acceptedState = state;
acceptedState = Optional.of(state);
return state;
} else {
return configMismatchState;
Expand Down Expand Up @@ -566,15 +566,15 @@ public FunctionType(Function type, Optional<Integer> windowSize) {
}

public boolean alwaysAccept() {
if ((type == Function.DELTA || type == Function.DELTA_PERCENT) && acceptedState == UnDefType.UNDEF) {
if ((type == Function.DELTA || type == Function.DELTA_PERCENT) && acceptedState.isEmpty()) {
return true;
}
if (type == Function.DELTA_PERCENT) {
// avoid division by zero
if (acceptedState instanceof QuantityType base) {
if (acceptedState.get() instanceof QuantityType base) {
return base.toBigDecimal().compareTo(BigDecimal.ZERO) == 0;
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}
if (acceptedState instanceof DecimalType base) {
if (acceptedState.get() instanceof DecimalType base) {
return base.toBigDecimal().compareTo(BigDecimal.ZERO) == 0;
}
}
Expand Down Expand Up @@ -707,11 +707,11 @@ public String toString() {

private @Nullable State calculateDelta() {
if (newState instanceof QuantityType newStateQuantity) {
QuantityType result = newStateQuantity.subtract((QuantityType) acceptedState);
QuantityType result = newStateQuantity.subtract((QuantityType) acceptedState.get());
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return result.toBigDecimal().compareTo(BigDecimal.ZERO) < 0 ? result.negate() : result;
}
BigDecimal result = ((DecimalType) newState).toBigDecimal()
.subtract(((DecimalType) acceptedState).toBigDecimal()) //
.subtract(((DecimalType) acceptedState.get()).toBigDecimal()) //
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.abs();
return new DecimalType(result);
}
Expand All @@ -720,13 +720,13 @@ public String toString() {
State calculatedDelta = calculateDelta();
BigDecimal bdDelta;
BigDecimal bdBase;
if (acceptedState instanceof QuantityType acceptedStateQuantity) {
if (acceptedState.get() instanceof QuantityType acceptedStateQuantity) {
// Assume that delta and base are in the same unit
bdDelta = ((QuantityType) calculatedDelta).toBigDecimal();
bdBase = acceptedStateQuantity.toBigDecimal();
} else {
bdDelta = ((DecimalType) calculatedDelta).toBigDecimal();
bdBase = ((DecimalType) acceptedState).toBigDecimal();
bdBase = ((DecimalType) acceptedState.get()).toBigDecimal();
}
bdBase = bdBase.abs();
BigDecimal percent = bdDelta.multiply(BigDecimal.valueOf(100)).divide(bdBase, 2, RoundingMode.HALF_EVEN);
Expand Down