编写规则以根据访问情况检测客户在商店某个部门中的位置

Question

我是 Drools 的新手，有一些问题。我正在努力创建规则来检测商店部门中的客户。

我的模型如下：

客户：Id，Point(x,y)

部门：Id，矩形

客户活动

我目前有客户用 x,y 位置或点表示，部门用矩形表示。

1.) 如何编写规则来检测客户是否在矩形内？

2.) 如果客户在部门内更改位置至少 2 次，则触发事件。如何编写规则来检测客户是否在某个部门并且已经两次更改位置？

请告诉我。

谢谢！

客户

public class CustomerObj {

public CustomerObj(String custId, Integer timestamp) {
    super();
    this.custId = custId;
    this.timestamp = timestamp;
}
private String custId;
private long timestamp;
private Integer classification;
private Point location;
private Department department;


public long getTimestamp() {
    return timestamp;
}
public void setTimestamp(Integer timestamp) {
    this.timestamp = timestamp;
}
public String getCustId() {
    return custId;
}
public void setCustId(String custId) {
    this.custId = custId;
}
public Integer getClassification() {
    return classification;
}
public void setClassification(Integer classification) {
    this.classification = classification;
}
public Point getLocation() {
    return location;
}
public void setLocation(Point location) {
    this.location = location;
}
public Department getDepartment() {
    return department;
}
public void setDepartment(Department department) {
    this.department = department;
}

}

部门

public class部门{

public Department(Integer departmentId) {
    super();
    this.departmentId = departmentId;
}

private Integer departmentId;
private Rectangle deptLocation;

public Integer getDepartmentId() {
    return departmentId;
}

public void setDepartmentId(Integer departmentId) {
    this.departmentId = departmentId;
}

public boolean containsCustomer(CustomerObj c) {
    if (this.deptLocation.contains(c.getLocation())) return true;
    else return false;
}

}

Answer 1

假设 Rectangle 和 Point 来自 java.awt，事情就很简单了。

rule "customer in department"
when
    CustomerObj( $cid: custId, $p: point )
    Department( $did: departmentId, $dloc: deptLocation,
                $dloc.contains( $p ) )
then
    System.out.println( "customer " + $cid + " in " + $did );
end

至于移动，您需要一个显示客户和部门 ID 以及位置的 CustomerEvent。

rule "customer moves frequently in same department"
when
    CustomerEvent( $cid: custId, $did: dptmtId, $p: Point )
    $dep: Department( departmentId == $did )
    $cust: CustomerObj( custId == $cid, department == $dep, moves >= 1 )
then
    // whatever
end

请注意，您需要额外的规则来更改客户的部门参考和注册第一次移动，并且可能计算第二次移动之后的移动。

编写规则以根据访问情况检测客户在商店某个部门中的位置

write a rule to detect customer location in a department in a store based on visits

java

jboss

rule-engine

drools

complex-event-processing

客户

部门