2.3 The XML Abstractions Package
The XML Abstractions package contains exception and utility classes.
2.3.1 Class Hierarchy
The class hierarchy in the XML Abstractions package is illustrated in Figure 3 and Figure 4.
Figure 3: XML Abstractions - XML utility group hierarchy
Figure 4: XML Abstractions-- Exception group hierarchy
2.3.2 Listing of Class Groups
The classes in the XML Abstractions package fall into two functional groups:
XML utility classes
Exception classes
2.3.2.1 XML Utility classes group
These classes are included in Table 4.
Table 4: Listing of XML Abstractions classes -- Utility group
| Class Name | Purpose |
RWXmlAttribute | Represents an attribute of an XML element. |
RWXmlDuration | Represents an XML Schema duration type. |
RWXmlName | Represents an XML name. |
RWXmlNamespace | Represents an XML namespace. |
RWXmlProlog | Represents an XML prolog. |
2.3.2.2 Exception classes group
These classes are included in Table 5.
Table 5: Listing of XML Abstractions classes -- Exception group
| Class Name | Purpose |
RWXmlBadArgError | Thrown in response to invalid arguments. |
RWXmlBoundsError | Thrown for out-of-bounds access to an array or composite. |
RWXmlDomainError | Thrown for XML domain errors. |
RWXmlError | Base class for all XML errors. |
RWXmlInternalError | Thrown for an error internal to the module. |
RWXmlLengthError | Thrown for length errors. |
RWXmlRangeError | Thrown for range errors. |
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