Re: [Simple-support] @ElementList
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Re: [Simple-support] @ElementList
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From: Niall G. - Y. <Nia...@yi...> - 2012-12-05 21:49:30
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With a converter you would not use an @ElementUnion, one Converter should be used to handle all the different types for PLObject. Why do you not just use implementations and annotate them as normal? At any rate a converter should work for PLObject.
-----Original Message-----
From: Jochen van Waasen [mailto:Jo...@va...]
Sent: Thursday, 6 December 2012 7:22 AM
To: Niall Gallagher; sim...@li...
Subject: Re: [Simple-support] @ElementList
Hi Niall,
I still don’t understand how to solve my issue:
My new PropertyList class looks like this. It now reflects the DTD as the objects are mutual exclusive.
import org.simpleframework.xml.Attribute;
import org.simpleframework.xml.Element;
import org.simpleframework.xml.ElementUnion;
import org.simpleframework.xml.Root;
@Root(name = "plist")
public class PropertyList{
@ElementUnion({
@Element(name = "dict", required = false, type = PLDict.class),
@Element(name = "array", required = false, type = PLArray.class),
@Element(name = "real", required = false, type = PLNumber.class),
@Element(name = "integer", required = false, type = PLNumber.class),
@Element(name = "string", required = false, type = PLString.class),
@Element(name = "data", required = false, type = PLData.class),
@Element(name = "date", required = false, type = PLDate.class),
@Element(name = "true", required = false, type = PLBoolean.class),
@Element(name = "false", required = false, type =
PLBoolean.class)
})
private PLObject plObject;
@Attribute(required = true)
private String version;
public PropertyList(){
super();
}
public String getVersion(){
return this.version;
}
public void setVersion(String version){
this.version = version;
}
public PLObject getPLObject() {
return plObject;
}
public void setPLObject(PLObject plObject) {
this.plObject = plObject;
}
}
How can I define Converters for my classes?
This does not work
@ElementUnion({
@Element(name = "dict", required = false, type = PLDict.class),
@Element(name = "array", required = false, type = PLArray.class),
@Element(name = "real", required = false, type = PLNumber.class),
@Element(name = "integer", required = false, type = PLNumber.class),
@Element(name = "string", required = false, type = PLString.class),
@Element(name = "data", required = false, type = PLData.class),
@Element(name = "date", required = false, type = PLDate.class),
@Element(name = "true", required = false, type = PLBoolean.class),
@Element(name = "false", required = false, type =
PLBoolean.class)
})
@Convert(PLObjectConverter.class)
private PLObject plObject;
and gives me the following error:
Element annotation required for field 'plObject'
Where do I have to annotate/define the converter when using ElementUnion?
Thanks
Jochen
On 05.12.2012 09:31 , Niall Gallagher wrote:
> Yes an @ElementUnion can match two different classes, PlKey and PlObject need to be objects not interfaces. If there are many implementations use @ElementMapUnion to specify them.
>
> --- On Wed, 5/12/12, jo...@va...<jo...@va...> wrote:
>
>> From: jo...@va...<jo...@va...>
>> Subject: [Simple-support] @ElementList
>> To: sim...@li...
>> Received: Wednesday, 5 December, 2012, 12:21 AM Hi,
>>
>> I have this set of custom classes:
>> PLBigDecimal, PLBoolean, PLData, PLDate, PLNumber, PLString:
>> these all implement the interface PLObject PLKey (does not implement
>> interface PLObject).
>>
>> @ElementMap(name = "dict",
>> key = "key", keyType = PLKey.class,
>> required = false, inline = false) private Map<PLKey,
>> PLObject> plDictionary;
>>
>> The XML looks like this:
>> <?xml version="1.0"
>> encoding="UTF-8"?>
>> <plist version="1.0">
>> <date>2012-11-30T10:14:00Z</date>
>> <dict>
>>
>> <key>key01</key><string>value01</string>
>>
>> <key>key02</key><string>value02</string>
>>
>> <key>key03</key><string>value03</string>
>> </dict>
>> <real>150.0</real>
>> <integer>500</integer>
>> <string>myPLString</string>
>> <true/>
>> <false/>
>> </plist>
>>
>> How can I parse the<dict> structure.
>> My current (see above) annotation gives me this error:
>> Cannot instantiate interface PLObject for interface PLObject
>>
>> How can I use this Map<PLKey, PLObject> so that it can hold any
>> combination of PLKey and my PLObject interface (PLString,
>> PLBigDecimal, …)?
>> Can this be done at all with simpleXML?
>>
>> Any help on the map topic is appreciated!
>>
>> The second thing:
>> @Element(name = "true", required = false)
>> @Convert(PLBooleanConverter.class)
>> private PLBoolean plTrue;
>>
>> @Element(name = "false", required =
>> false)
>> @Convert(PLBooleanConverter.class)
>> private PLBoolean plFalse;
>>
>> Is it possible to bind two xml elements to one object?
>> The above works but I am looking for something like (map two xml tags
>> to one object):
>> @ElementUnion({
>> @Element(name = "false", required = false),
>> @Element(name = "true", required =
>> false)
>> })
>> @Convert(PLBooleanConverter.class)
>> private PLBoolean plBoolean;
>>
>> Thanks
>> Jochen
>>
>> PS: Implementation for my root xml element, The ElementList is not
>> working for the same reason (interface cannot be
>> instantiated)
>>
>> @Root(name = "plist")
>> public class PropertyList{
>>
>> @ElementMap(name = "dict",
>> key =
>> "key", keyType = PLKey.class,
>> required = false, inline = false)
>> private Map<PLKey, PLObject> plDictionary;
>>
>> @ElementList(name = "array", required =
>> false)
>> private List<PLObject> plArray;
>>
>> @Element(name = "real", required = false)
>> @Convert(PLNumberConverter.class)
>> private PLNumber plReal;
>>
>> @Element(name = "integer", required =
>> false)
>> @Convert(PLNumberConverter.class)
>> private PLNumber plInteger;
>>
>> @Element(name = "string", required =
>> false)
>> @Convert(PLStringConverter.class)
>> private PLString plString;
>>
>> @Element(name = "data", required = false)
>> @Convert(PLDataConverter.class)
>> private PLData plData;
>>
>> @Element(name = "date", required = false)
>> @Convert(PLDateConverter.class)
>> private PLDate plDate;
>>
>> @Element(name = "true", required = false)
>> @Convert(PLBooleanConverter.class)
>> private PLBoolean plTrue;
>>
>> @Element(name = "false", required =
>> false)
>> @Convert(PLBooleanConverter.class)
>> private PLBoolean plFalse;
>>
>> @Attribute(required = true)
>> private String version;
>>
>> public PropertyList(){
>>
>> super();
>> }
>> }
>>
>>
>> -----Inline Attachment Follows-----
>>
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>
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