Re: [Simple-support] Custom HashMap serialization/deserialization - Help

[Simon B. <sim...@if...>]

Hi Miguel,

Sorry, I was a little bit to fast. Didn't realize the Map:

So new try:

public class Courses {
     @ElementList(entry=”Course”,type=com.simpleserializer.model.Course.class,
inline=true)
java.util.Collection<Course> getCourses(){
    return courses.values();
}

@ElementList(entry=”Course”,type=com.simpleserializer.model.Course.class,
inline=true)
void setCourses(java.util.Collection<Course> courses){
    for(Course course: courses){
        this.put(course);
    }
}

                 private HashMap<String, Course> courses = new
 HashMap<String, Course>();

                 public void put(Course course)
                 {
                                this.courses.put(course.getId(), course);
                 }

    }


> Hi Simon!
>
>    Thank you for your quick answer.
>
>    Unfortunately it did not work. When I try this:
>
> 	// Retrieving courses from ddbb
> 	Courses courses = CoursesDAO.get(token, connection);
>
> 	// Serialization to xml
> 	String xml = Serializer.toXml(courses);
>
>    It raises the following exception:
>
>            java.util.HashMap cannot be cast to java.util.Collection
>
>    The rest of the code below:
>
> Serializer.java:
>
> 	package com.simpleserializer.util;
>
> 	import java.io.StringWriter;
>
> 	import org.simpleframework.xml.core.Persister;
>
> 	public class Serializer {
> 		public static String toXml(Object source) {
> 			StringWriter response = new StringWriter();
>
> 			try {
> 				new Persister().write(source, response);
> 			} catch (Exception e) {
> 				e1.printStackTrace();
> 			}
>
> 			return response.toString();
> 		}
> 	}
>
>
> On Mon, May 28, 2012 at 12:12 PM, Simon Brodt <sim...@if...>
> wrote:
>> Hi Miguel,
>>
>>
>>
>> Try the following:
>>
>>
>>
>> Course.java:
>>
>>    package com.simpleserializer.model;
>>
>>
>>
>>    import org.simpleframework.xml.Attribute;
>>
>>
>>
>>    @Root(name=”Course”)
>>
>>    public class Course {
>>
>>                 @Attribute private String id;
>>
>>                 @Attribute private String name;
>>
>>
>>
>>                 public Course(String id, String name) {
>>
>>                                   this.setId(id);
>>
>>                                   this.setName(name);
>>
>>                 }
>>
>>
>>
>>        public String getId() {
>>
>>                                   return this.id;
>>
>>                 }
>>
>>
>>
>>                 public void setId(String id) {
>>
>>                                this.id = id;
>>
>>                 }
>>
>>
>>
>>                 public String getName() {
>>
>>                                return this.name;
>>
>>                 }
>>
>>
>>
>>                 public void setName(String name) {
>>
>>                                this.name = name;
>>
>>                 }
>>
>>    }
>>
>>
>>
>> Course2.java:
>>
>>    package com.simpleserializer.model;
>>
>>
>>
>>    import java.util.HashMap;
>>
>>
>>
>>    @Root(name=”Courses”)
>>
>>    public class Courses {
>>
>>
>>
>>                 @ElementList(entry=”Course”,type=
>> com.simpleserializer.model.Course.class, inline=true)
>>
>>                 private HashMap<String, Course> courses = new
>> HashMap<String, Course>();
>>
>>
>>
>>                 public void put(String courseId, Course course)
>>
>>                 {
>>
>>                                this.courses.put(courseId, course);
>>
>>                 }
>>
>>    }
>>
>>
>>
>> Von: Miguel Ángel Martínez Fernández [mailto:mig...@gm...]
>> Gesendet: Montag, 28. Mai 2012 01:35
>> An: sim...@li...
>> Betreff: [Simple-support] Custom HashMap serialization/deserialization -
>> Help
>>
>>
>>
>> Hi,
>>
>>
>>
>>  I am trying to serialize (and deserialize) two Java clases
>> (Courses.java
>> and Couse.Java) in order to get the following XML:
>>
>>
>>
>>         <Courses>
>>
>>           <Course id="course01" name="My first course"/>
>>
>>           <Course id="course02" name="My second course"/>
>>
>>         </Courses>
>>
>>
>>
>> Course.java:
>>
>>    package com.simpleserializer.model;
>>
>>
>>
>>    import org.simpleframework.xml.Attribute;
>>
>>
>>
>>    public class Course {
>>
>>             @Attribute private String id;
>>
>>             @Attribute private String name;
>>
>>
>>
>>             public Course(String id, String name) {
>>
>>                            this.setId(id);
>>
>>                            this.setName(name);
>>
>>             }
>>
>>
>>
>>        public String getId() {
>>
>>                            return this.id;
>>
>>             }
>>
>>
>>
>>             public void setId(String id) {
>>
>>                         this.id = id;
>>
>>             }
>>
>>
>>
>>             public String getName() {
>>
>>                         return this.name;
>>
>>             }
>>
>>
>>
>>             public void setName(String name) {
>>
>>                         this.name = name;
>>
>>             }
>>
>>    }
>>
>>
>>
>> Course2.java:
>>
>>    package com.simpleserializer.model;
>>
>>
>>
>>    import java.util.HashMap;
>>
>>
>>
>>    public class Courses {
>>
>>             private HashMap<String, Course> courses = new
>> HashMap<String,
>> Course>();
>>
>>
>>
>>             public void put(String courseId, Course course)
>>
>>             {
>>
>>                         this.courses.put(courseId, course);
>>
>>             }
>>
>>    }
>>
>>
>>
>> An example about how these clases are used is:
>>
>>
>>
>>      Courses courses = new Courses();
>>
>>
>>
>>      Course course1 = new Course("course01", "My first course");
>>
>>      Course course2 = new Course("course02", "My second course");
>>
>>
>>
>>      courses.put(course1.getId(), course1);
>>
>>      courses.put(course2.getId(), course2);
>>
>>
>>
>>
>>
>> Could you please help me? I would really appreciate it!
>>
>>
>>
>> Thanks!
>