如何转发和使用特定于子的方法
我有以下问题：
//class XmlObject is part of org.apache.xmlbeans
public class DepartmentType extends XmlObject; // getName method is defined in this class
public class OrganizatiopnType extends XmlObject; // getName method is defined in this class
XmlObject department = null;
if (a == 1)
department = (DepartmentType) order.getDepartment(); // returns DepartmentType
else
department = (OrganizationType) order.getOrganization(); // returns OrganizationType
department.getName(); // throws cannot find symbol
// ... and do some other complex stuff using methods which are defined in both classes ...
DepartmentType
OrganizationType
没有找到相关结果
已邀请:
4 个回复
死簇
<complexType name="NamedEntity" abstract="true"> <sequence> <element name="name" type="string"/> </sequence> </complexType> <complexType name="DepartmentType"> <complexContent> <extension base="NamedEntity"> <sequence> <element name="whatever"/> </sequence> </extension> </complexContent> </complexType>public class Department { XmlObject obj; public Department(XmlObject obj){ if(!obj instanceof DepartmentType || !obj instanceof OrganizatiopnType){ throw new IllegalArgumentException(); } this.obj = obj; } public String getName(){ return (String)PropertyUtils.getProperty(obj, "name"); } }剑哎
public interface NamedElement { String getName(); } ... NamedElement department = a == 1 ? order.getDepartment() : order.getOrganisation(); String name = department.getName();和代码。撕吠
public class UnitTypeBase extends XmlObject{ public String getName(){ //Some implementaition or you can mark it as abstract } }//class XmlObject is part of org.apache.xmlbeans public class DepartmentType extends UnitTypeBase; // getName method is defined in this class public class OrganizatiopnType extends UnitTypeBase; // getName method is defined in this class UnitTypeBase department = null; if (a == 1) department = (DepartmentType) order.getDepartment(); // returns DepartmentType else department = (OrganizationType) order.getOrganization(); // returns OrganizationType department.getName(); // ... and do some other complex stuff using methods which are defined in both classes ...嗜蒂谷尘旱
public class IName { public void getName(); } public class DepartmentType extends XmlObject implements IName {} public class OrganizationType extends XmlObject implements IName {} IName department = null; if (a==1) department = order.getDepartment(); else department = order.getOrganization(); String name = department.getName();