Java Doc for AttributeList.java in  » Science » javolution-5.2 » org » xml » sax » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Science » javolution 5.2 » org.xml.sax 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


org.xml.sax.AttributeList

AttributeList
public interface AttributeList (Code)
Interface for an element's attribute specifications.
This module, both source code and documentation, is in the Public Domain, and comes with NO WARRANTY. See http://www.saxproject.org for further information.

This is the original SAX1 interface for reporting an element's attributes. Unlike the new org.xml.sax.Attributes Attributes interface, it does not support Namespace-related information.

When an attribute list is supplied as part of a org.xml.sax.DocumentHandler.startElement startElement event, the list will return valid results only during the scope of the event; once the event handler returns control to the parser, the attribute list is invalid. To save a persistent copy of the attribute list, use the SAX1 org.xml.sax.helpers.AttributeListImpl AttributeListImpl helper class.

An attribute list includes only attributes that have been specified or defaulted: #IMPLIED attributes will not be included.

There are two ways for the SAX application to obtain information from the AttributeList. First, it can iterate through the entire list:

 public void startElement (String name, AttributeList atts) {
 for (int i = 0; i < atts.getLength(); i++) {
 String name = atts.getName(i);
 String type = atts.getType(i);
 String value = atts.getValue(i);
 [...]
 }
 }
 

(Note that the result of getLength() will be zero if there are no attributes.)

As an alternative, the application can request the value or type of specific attributes:

 public void startElement (String name, AttributeList atts) {
 String identifier = atts.getValue("id");
 String label = atts.getValue("label");
 [...]
 }
 

since:
   SAX 1.0
author:
   David Megginson
version:
   2.0.1 (sax2r2)
See Also:   org.xml.sax.DocumentHandler.startElement
See Also:    startElement
See Also:   org.xml.sax.helpers.AttributeListImpl
See Also:    AttributeListImpl




Method Summary
abstract public  intgetLength()
     Return the number of attributes in this list.

The SAX parser may provide attributes in any arbitrary order, regardless of the order in which they were declared or specified.

abstract public  StringgetName(int i)
     Return the name of an attribute in this list (by position).

The names must be unique: the SAX parser shall not include the same attribute twice.

abstract public  StringgetType(int i)
     Return the type of an attribute in the list (by position).

The attribute type is one of the strings "CDATA", "ID", "IDREF", "IDREFS", "NMTOKEN", "NMTOKENS", "ENTITY", "ENTITIES", or "NOTATION" (always in upper case).

If the parser has not read a declaration for the attribute, or if the parser does not report attribute types, then it must return the value "CDATA" as stated in the XML 1.0 Recommentation (clause 3.3.3, "Attribute-Value Normalization").

For an enumerated attribute that is not a notation, the parser will report the type as "NMTOKEN".


Parameters:
  i - The index of the attribute in the list (starting at 0).
abstract public  StringgetType(String name)
     Return the type of an attribute in the list (by name).

The return value is the same as the return value for getType(int).

If the attribute name has a namespace prefix in the document, the application must include the prefix here.


Parameters:
  name - The name of the attribute.
abstract public  StringgetValue(int i)
     Return the value of an attribute in the list (by position).

If the attribute value is a list of tokens (IDREFS, ENTITIES, or NMTOKENS), the tokens will be concatenated into a single string separated by whitespace.


Parameters:
  i - The index of the attribute in the list (starting at 0).
abstract public  StringgetValue(String name)
     Return the value of an attribute in the list (by name).



Method Detail
getLength
abstract public int getLength()(Code)
Return the number of attributes in this list.

The SAX parser may provide attributes in any arbitrary order, regardless of the order in which they were declared or specified. The number of attributes may be zero.

The number of attributes in the list.



getName
abstract public String getName(int i)(Code)
Return the name of an attribute in this list (by position).

The names must be unique: the SAX parser shall not include the same attribute twice. Attributes without values (those declared #IMPLIED without a value specified in the start tag) will be omitted from the list.

If the attribute name has a namespace prefix, the prefix will still be attached.


Parameters:
  i - The index of the attribute in the list (starting at 0). The name of the indexed attribute, or nullif the index is out of range.
See Also:   AttributeList.getLength
See Also:   



getType
abstract public String getType(int i)(Code)
Return the type of an attribute in the list (by position).

The attribute type is one of the strings "CDATA", "ID", "IDREF", "IDREFS", "NMTOKEN", "NMTOKENS", "ENTITY", "ENTITIES", or "NOTATION" (always in upper case).

If the parser has not read a declaration for the attribute, or if the parser does not report attribute types, then it must return the value "CDATA" as stated in the XML 1.0 Recommentation (clause 3.3.3, "Attribute-Value Normalization").

For an enumerated attribute that is not a notation, the parser will report the type as "NMTOKEN".


Parameters:
  i - The index of the attribute in the list (starting at 0). The attribute type as a string, ornull if the index is out of range.
See Also:   AttributeList.getLength
See Also:   
See Also:   AttributeList.getType(j2me.lang.String)



getType
abstract public String getType(String name)(Code)
Return the type of an attribute in the list (by name).

The return value is the same as the return value for getType(int).

If the attribute name has a namespace prefix in the document, the application must include the prefix here.


Parameters:
  name - The name of the attribute. The attribute type as a string, or null if nosuch attribute exists.
See Also:   AttributeList.getType(int)



getValue
abstract public String getValue(int i)(Code)
Return the value of an attribute in the list (by position).

If the attribute value is a list of tokens (IDREFS, ENTITIES, or NMTOKENS), the tokens will be concatenated into a single string separated by whitespace.


Parameters:
  i - The index of the attribute in the list (starting at 0). The attribute value as a string, ornull if the index is out of range.
See Also:   AttributeList.getLength
See Also:   AttributeList.getValue(j2me.lang.String)



getValue
abstract public String getValue(String name)(Code)
Return the value of an attribute in the list (by name).

The return value is the same as the return value for getValue(int).

If the attribute name has a namespace prefix in the document, the application must include the prefix here.


Parameters:
  name - the name of the attribute to return The attribute value as a string, or null ifno such attribute exists.
See Also:   AttributeList.getValue(int)



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