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34.3. Using Unbound Attributes
Overview
Defining in XML Schema
anyAttribute
element. It can be used wherever an attribute element can be used. The anyAttribute
element has no attributes, as shown in Example 34.7, “Complex Type with an Undeclared Attribute”.
Example 34.7. Complex Type with an Undeclared Attribute
<complexType name="arbitter">
<sequence>
<element name="name" type="xsd:string" />
<element name="rate" type="xsd:float" />
</sequence>
<anyAttribute />
</complexType>
Example 34.8. Examples of Elements Defined with a Wild Card Attribute
<officer rank="12"><name>...</name><rate>...</rate></officer> <lawyer type="divorce"><name>...</name><rate>...</rate></lawyer> <judge><name>...</name><rate>...</rate></judge>
Mapping to Java
anyAttribute
element is mapped to Java, the code generator adds a member called otherAttributes
to the generated class. otherAttributes
is of type java.util.Map<QName, String>
and it has a getter method that returns a live instance of the map. Because the map returned from the getter is live, any modifications to the map are automatically applied. Example 34.9, “Class for a Complex Type with an Undeclared Attribute” shows the class generated for the complex type defined in Example 34.7, “Complex Type with an Undeclared Attribute”.
Example 34.9. Class for a Complex Type with an Undeclared Attribute
public class Arbitter { @XmlElement(required = true) protected String name; protected float rate; @XmlAnyAttribute private Map<QName, String> otherAttributes = new HashMap<QName, String>(); public String getName() { return name; } public void setName(String value) { this.name = value; } public float getRate() { return rate; } public void setRate(float value) { this.rate = value; } public Map<QName, String> getOtherAttributes() { return otherAttributes; } }
Working with undeclared attributes
otherAttributes
member of the generated class expects to be populated with a Map
object. The map is keyed using QNames
. Once you get the map , you can access any attributes set on the object and set new attributes on the object.
Example 34.10. Working with Undeclared Attributes