net.sf.saxon.om

Class NameChecker

public abstract class NameChecker extends Object

A NameChecker performs validation and analysis of XML names. There are two implementations of this interface, one for XML 1.0 names and one for XML 1.1 names. The class also handles validation of characters against the XML 1.0 or XML 1.1 rules.
Method Summary
static StringgetPrefix(String qname)
Extract the prefix from a QName.
String[]getQNameParts(CharSequence qname)
Validate a QName, and return the prefix and local name.
abstract StringgetXMLVersion()
Return the XML version supported by this NameChecker
booleanisQName(String name)
Validate whether a given string constitutes a valid QName, as defined in XML Namespaces.
abstract booleanisValidChar(int ch)
Test whether a character is a valid XML character
abstract booleanisValidNCName(String name)
Validate whether a given string constitutes a valid NCName, as defined in XML Namespaces.

Method Detail

getPrefix

public static final String getPrefix(String qname)
Extract the prefix from a QName. Note, the QName is assumed to be valid.

Parameters: qname The lexical QName whose prefix is required

Returns: the prefix, that is the part before the colon. Returns an empty string if there is no prefix

getQNameParts

public final String[] getQNameParts(CharSequence qname)
Validate a QName, and return the prefix and local name.

Parameters: qname the lexical QName whose parts are required

Returns: an array of two strings, the prefix and the local name. The first item is a zero-length string if there is no prefix.

Throws: QNameException if not a valid QName.

getXMLVersion

public abstract String getXMLVersion()
Return the XML version supported by this NameChecker

Returns: "1.0" or "1.1" as a string

isQName

public final boolean isQName(String name)
Validate whether a given string constitutes a valid QName, as defined in XML Namespaces. Note that this does not test whether the prefix is actually declared.

Parameters: name the name to be tested

Returns: true if the name is a lexically-valid QName

isValidChar

public abstract boolean isValidChar(int ch)
Test whether a character is a valid XML character

Parameters: ch the character to be tested

Returns: true if this is a valid character in the selected version of XML

isValidNCName

public abstract boolean isValidNCName(String name)
Validate whether a given string constitutes a valid NCName, as defined in XML Namespaces.

Parameters: name the name to be tested

Returns: true if the name is a lexically-valid QName