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java.lang.Objectjavax.xml.namespace.QName
QName represents a qualified name, which is
specified by three parts; a Namespace URI, a
local part and a prefix.
An example of a qualified name is shown below:
<soap:Envelope
xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/'>
<soap:Body>
...
</soap:Body>
</soap:Envelope>
The prefix is xmlns, the local part is soap, and
the namespace URI is http://schemas.xmlsoap.org/soap/envelope/.
The use of the local part is a techincality to make it easier
to reference a namespace. Instead of using the URI the local part
can be used.
In the example above this corresponds to using soap in stead of
the longer URL: http://schemas.xmlsoap.org/soap/envelope/
Additional information about QName includes:
QName to retain lexical
information. The prefix is not used in
equals(Object), QName.equals(Object)
or to compute the hash code. Equality and the hash code are
defined using only the Namespace URI and local part.
QName is immutable.
For further details on qualified names refer to the XML specifications [XMLN, XMLNE, XMLS].
| Constructor Summary | |
QName(java.lang.String llocalPart)
QName constructor specifying the local part. |
|
QName(java.lang.String llnamespaceURI,
java.lang.String llocalPart)
QName constructor specifying the Namespace URI
and local part.
|
|
QName(java.lang.String lnamespaceURI,
java.lang.String llocalPart,
java.lang.String lprefix)
QName constructor specifying the Namespace URI,
local part and prefix. |
|
| Method Summary | |
boolean |
equals(java.lang.Object objectToTest)
Test this QName for equality with another
Object. |
java.lang.String |
getLocalPart()
Get the local part of this QName. |
java.lang.String |
getNamespaceURI()
Get the Namespace URI of this QName. |
java.lang.String |
getPrefix()
Get the prefix of this QName. |
int |
hashCode()
Generate the hash code for this QName. |
java.lang.String |
toString()
String representation of this
QName. |
static QName |
valueOf(java.lang.String qNameAsString)
QName derived from parsing the formatted
String. |
| Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
| Constructor Detail |
public QName(java.lang.String llnamespaceURI,
java.lang.String llocalPart)
QName constructor specifying the Namespace URI
and local part.
If the Namespace URI is null, it is set to "".
This value represents no explicitly defined Namespace as
defined by [XMLN]. This action preserves compatible behavior
with QName 1.0.
If the local part is null, an
IllegalArgumentException is thrown.
When using this constructor, the prefix is set to "".
llnamespaceURI - Namespace URI of the QNamellocalPart - local part of the QName
public QName(java.lang.String lnamespaceURI,
java.lang.String llocalPart,
java.lang.String lprefix)
QName constructor specifying the Namespace URI,
local part and prefix.
If the Namespace URI is null, it is set to "".
This value represents no
explicitly defined Namespace as defined by the Namespaces
in XML specification. This action preserves compatible
behavior with QName 1.0.
If the local part is null,
an IllegalArgumentException is thrown.
If the prefix is null, an
IllegalArgumentException is thrown. Use ""
to explicitly indicate that no
prefix is present or the prefix is not relevant.
lnamespaceURI - Namespace URI of the QNamellocalPart - local part of the QNamelprefix - prefix of the QNamepublic QName(java.lang.String llocalPart)
QName constructor specifying the local part.
If the local part is null or
.equals(""), an
IllegalArgumentException is thrown.
When using this constructor, the Namespace URI is set to "" and the prefix is set to "".
In an XML context, all Elements and
Attributes names exist in the context of a Namespace.
Making this explicit during the construction of a
QName, helps to prevent difficulties finding XML
validity errors.
llocalPart - local part of the QNameQName(String
namespaceURI, String localPart),
QName(String namespaceURI, String localPart, String
prefix)| Method Detail |
public java.lang.String getNamespaceURI()
Get the Namespace URI of this QName.
QNamepublic java.lang.String getLocalPart()
Get the local part of this QName.
QNamepublic java.lang.String getPrefix()
Get the prefix of this QName.
The prefix assigned to a QName may
not be valid in a different
context. For example, a QName may be assigned a
prefix in the context of parsing a document but that prefix may
be invalid in the context of a different document.
QNamepublic boolean equals(java.lang.Object objectToTest)
Test this QName for equality with another
Object.
If the Object to be tested is not a
QName or is null, then this method
returns false.
Two QNames are considered equal if and only if
both the Namespace URI and local part are equal. This method
uses String.equals() to check equality of the
Namespace URI and local part. The prefix is
not used to determine equality.
This method satisfies the general contract of
Object.equals(Object).
objectToTest - the Object to test for
equality with this QName
true if the given Object is
equal to this QName else falsepublic int hashCode()
Generate the hash code for this QName.
The hash code is calculated using both the Namespace URI and
the local part of the QName. The prefix is
not used to calculate the hash
code.
This method satisfies the general contract of
Object.hashCode().
QName Objectpublic java.lang.String toString()
String representation of this
QName.
There is no standard specification for
representing a QName as a String.
The returned String is not portable across
implementations and will change when a standard
String representation is defined. This
implementation currently represents a QName as:
"{" + Namespace URI + "}" + local part. If the Namespace URI
.equals(""), only the
local part is returned. An appropriate use of this method is
for debugging or logging for human consumption.
Note the prefix value is not
returned as part of the String representation.
This method satisfies the general contract of
Object.toString().
String representation of this QNamepublic static QName valueOf(java.lang.String qNameAsString)
QName derived from parsing the formatted
String.
If the String is null
or does not conform to QName.toString() formatting,
an IllegalArgumentException is thrown.
The String must be in the
form returned by QName.toString(). There is
no standard specification for representing a
QName as a String. The
String format is not portable
across implementations and will change when a standard
String representation is defined. This
implementation currently parses a String formatted
as: "{" + Namespace URI + "}" + local part. If the Namespace
URI .equals(""), only the
local part should be provided.
The prefix value cannot be
represented in the String and will be set to
""
This method does not do full validation of the resulting
QName. In particular, the local part is not
validated as a NCName
as specified in Namespaces in
XML.
qNameAsString - String representation
of the QName
QName corresponding to the given StringQName.toString()
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