Class NameChecker

java.lang.Object
net.sf.saxon.om.NameChecker
Direct Known Subclasses:
Name10Checker, Name11Checker

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.
  • Constructor Details

    • NameChecker

      public NameChecker()
  • Method Details

    • 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
    • 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
    • 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) throws QNameException
      Validate a QName, and return the prefix and local name.
      Parameters:
      qname - the lexical QName whose parts are required. Note that leading and trailing whitespace is not permitted
      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.
    • 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
    • getXMLVersion

      public abstract String getXMLVersion()
      Return the XML version supported by this NameChecker
      Returns:
      "1.0" or "1.1" as a string