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Type:
Bug
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Status: Verified (View Workflow)
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Priority:
Major
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Resolution: Done
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Affects Version/s: 7.0.0.GA
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Fix Version/s: 7.0.1.GA
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Component/s: None
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Labels:None
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Target Release:
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Fix Build:CR1
I'm using Drools 7.6 and for some reason @watch doesn't stop the rule from reactivating itself or other rules when only the unwatched property is changed. Which results in an infinite loop.
Can someone figure out what am I doing wrong?
The rule:
package com.model
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import com.model.*;
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import java.util.List;
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rule "10% for 15 High-range Items"
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when
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$o: Order($lines: orderLines) @watch(!discount)
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Number(intValue >= 15) from accumulate(
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OrderLine($item: item, $q: quantity) from $lines and
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Item(category == Item.Category.HIGH_RANGE) from $item,
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sum($q)
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)
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then
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modify($o) {increaseDiscount(0.10)}
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end
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The model used is from the book Mastering JBoss Drools. The method increase discount has been annotated with @Modifes. The order class:
public class Order implements Serializable {
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private static final long serialVersionUID = 1L;
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private Long orderId;
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private Date date;
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private Customer customer;
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private List<OrderLine> orderLines = new ArrayList<>();
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private Discount discount;
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public Order() {
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}
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public Long getOrderId() {
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return orderId;
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}
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public void setOrderId(Long orderId) {
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this.orderId = orderId;
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}
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public Customer getCustomer() {
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return customer;
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}
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public void setCustomer(Customer customer) {
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this.customer = customer;
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}
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public Date getDate() {
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return date;
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}
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public void setDate(Date date) {
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this.date = date;
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}
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public List<OrderLine> getOrderLines() {
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return orderLines;
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}
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public void setItems(List<OrderLine> orderLines) {
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this.orderLines = orderLines;
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}
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public double getTotal() {
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return this.getOrderLines().stream()
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.mapToDouble(item -> item.getItem().getSalePrice() * item.getQuantity())
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.sum();
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}
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public int getTotalItems() {
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return this.getOrderLines().stream()
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.mapToInt(item -> item.getQuantity())
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.sum();
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}
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@Modifies({"discount"})
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public void increaseDiscount(double increase) {
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if (discount == null) {
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discount = new Discount(0.0);
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}
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discount.setPercentage(discount.getPercentage() + increase);
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}
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public Discount getDiscount() {
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return discount;
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}
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public double getDiscountPercentage() {
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return discount.getPercentage();
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}
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public void setDiscount(Discount discount) {
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this.discount = discount;
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}
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}
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- cloned from
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- Resolved
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