org.xml.sax.helpers: public class: AttributeListImpl

org.xml.sax.helpers
public class: AttributeListImpl [javadoc | source]

java.lang.Object
   org.xml.sax.helpers.AttributeListImpl

All Implemented Interfaces:
AttributeList

Deprecated! This - class implements a deprecated interface, AttributeList ; that interface has been replaced by Attributes , which is implemented in the AttributesImpl helper class.

Default implementation for AttributeList.

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.

AttributeList implements the deprecated SAX1 AttributeList interface, and has been replaced by the new SAX2 AttributesImpl interface.

This class provides a convenience implementation of the SAX AttributeList interface. This implementation is useful both for SAX parser writers, who can use it to provide attributes to the application, and for SAX application writers, who can use it to create a persistent copy of an element's attribute specifications:

private AttributeList myatts;

public void startElement (String name, AttributeList atts)
{
             // create a persistent copy of the attribute list
             // for use outside this method
  myatts = new AttributeListImpl(atts);
  [...]
}

Please note that SAX parsers are not required to use this class to provide an implementation of AttributeList; it is supplied only as an optional convenience. In particular, parser writers are encouraged to invent more efficient implementations.

Also see:

org.xml.sax.AttributeList

org.xml.sax.DocumentHandler#startElement

since: SAX - 1.0

author: David - Megginson

version: 2.0.1 - (sax2r2)

Field Summary
Vector	names
Vector	types
Vector	values

Constructor:

Constructor:
public AttributeListImpl() { } Create an empty attribute list. This constructor is most useful for parser writers, who will use it to create a single, reusable attribute list that can be reset with the clear method between elements. Also see: addAttribute clear
public AttributeListImpl(AttributeList atts) { setAttributeList(atts); } Construct a persistent copy of an existing attribute list. This constructor is most useful for application writers, who will use it to create a persistent copy of an existing attribute list. Parameters: `atts` - The attribute list to copy Also see: org.xml.sax.DocumentHandler#startElement

 public AttributeListImpl() {

}

Create an empty attribute list.

This constructor is most useful for parser writers, who will use it to create a single, reusable attribute list that can be reset with the clear method between elements.

Also see:

addAttribute

clear

 public AttributeListImpl(AttributeList atts) {
	setAttributeList(atts);
}

This constructor is most useful for application writers, who will use it to create a persistent copy of an existing attribute list.

Parameters:

atts - The attribute list to copy

Also see:

org.xml.sax.DocumentHandler#startElement

Method from org.xml.sax.helpers.AttributeListImpl Summary:
addAttribute, clear, getLength, getName, getType, getType, getValue, getValue, removeAttribute, setAttributeList

Methods from java.lang.Object:
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from org.xml.sax.helpers.AttributeListImpl Detail:
public void addAttribute(String name, String type, String value) { names.addElement(name); types.addElement(type); values.addElement(value); } Deprecated! Add an attribute to an attribute list. This method is provided for SAX parser writers, to allow them to build up an attribute list incrementally before delivering it to the application.
public void clear() { names.removeAllElements(); types.removeAllElements(); values.removeAllElements(); } Deprecated! Clear the attribute list. SAX parser writers can use this method to reset the attribute list between DocumentHandler.startElement events. Normally, it will make sense to reuse the same AttributeListImpl object rather than allocating a new one each time.
public int getLength() { return names.size(); } Deprecated! Return the number of attributes in the list.
public String getName(int i) { if (i < 0) { return null; } try { return (String)names.elementAt(i); } catch (ArrayIndexOutOfBoundsException e) { return null; } } Deprecated! Get the name of an attribute (by position).
public String getType(int i) { if (i < 0) { return null; } try { return (String)types.elementAt(i); } catch (ArrayIndexOutOfBoundsException e) { return null; } } Deprecated! Get the type of an attribute (by position).
public String getType(String name) { return getType(names.indexOf(name)); } Deprecated! Get the type of an attribute (by name).
public String getValue(int i) { if (i < 0) { return null; } try { return (String)values.elementAt(i); } catch (ArrayIndexOutOfBoundsException e) { return null; } } Deprecated! Get the value of an attribute (by position).
public String getValue(String name) { return getValue(names.indexOf(name)); } Deprecated! Get the value of an attribute (by name).
public void removeAttribute(String name) { int i = names.indexOf(name); if (i >= 0) { names.removeElementAt(i); types.removeElementAt(i); values.removeElementAt(i); } } Deprecated! Remove an attribute from the list. SAX application writers can use this method to filter an attribute out of an AttributeList. Note that invoking this method will change the length of the attribute list and some of the attribute's indices. If the requested attribute is not in the list, this is a no-op.
public void setAttributeList(AttributeList atts) { int count = atts.getLength(); clear(); for (int i = 0; i < count; i++) { addAttribute(atts.getName(i), atts.getType(i), atts.getValue(i)); } } Deprecated! Set the attribute list, discarding previous contents. This method allows an application writer to reuse an attribute list easily.

Method from org.xml.sax.helpers.AttributeListImpl Detail:

 public  void addAttribute(String name,
    String type,
    String value) {
	names.addElement(name);
	types.addElement(type);
	values.addElement(value);
}

Deprecated!

This method is provided for SAX parser writers, to allow them to build up an attribute list incrementally before delivering it to the application.

 public  void clear() {
	names.removeAllElements();
	types.removeAllElements();
	values.removeAllElements();
}

Deprecated!

SAX parser writers can use this method to reset the attribute list between DocumentHandler.startElement events. Normally, it will make sense to reuse the same AttributeListImpl object rather than allocating a new one each time.

 public int getLength() {
	return names.size();
}

Deprecated!

Return the number of attributes in the list.

 public String getName(int i) {
	if (i <  0) {
	    return null;
	}
	try {
	    return (String)names.elementAt(i);
	} catch (ArrayIndexOutOfBoundsException e) {
	    return null;
	}
}

Deprecated!

Get the name of an attribute (by position).

 public String getType(int i) {
	if (i <  0) {
	    return null;
	}
	try {
	    return (String)types.elementAt(i);
	} catch (ArrayIndexOutOfBoundsException e) {
	    return null;
	}
}

Deprecated!

Get the type of an attribute (by position).

 public String getType(String name) {
	return getType(names.indexOf(name));
}

Deprecated!

Get the type of an attribute (by name).

 public String getValue(int i) {
	if (i <  0) {
	    return null;
	}
	try {
	    return (String)values.elementAt(i);
	} catch (ArrayIndexOutOfBoundsException e) {
	    return null;
	}
}

Deprecated!

Get the value of an attribute (by position).

 public String getValue(String name) {
	return getValue(names.indexOf(name));
}

Deprecated!

Get the value of an attribute (by name).

 public  void removeAttribute(String name) {
	int i = names.indexOf(name);
	if (i  >= 0) {
	    names.removeElementAt(i);
	    types.removeElementAt(i);
	    values.removeElementAt(i);
	}
}

Deprecated!

SAX application writers can use this method to filter an attribute out of an AttributeList. Note that invoking this method will change the length of the attribute list and some of the attribute's indices.

If the requested attribute is not in the list, this is a no-op.

 public  void setAttributeList(AttributeList atts) {
	int count = atts.getLength();
	clear();
	for (int i = 0; i <  count; i++) {
	    addAttribute(atts.getName(i), atts.getType(i), atts.getValue(i));
	}
}

Deprecated!

This method allows an application writer to reuse an attribute list easily.