org.xml.sax.helpers
Class AttributesImpl

java.lang.Object
  |
  +--org.xml.sax.helpers.AttributesImpl

public class AttributesImpl

extends java.lang.Object

implements Attributes

Default implementation of the Attributes interface.

This module, both source code and documentation, is in the Public Domain, and comes with NO WARRANTY.

This class provides a default implementation of the SAX2 Attributes interface, with the addition of manipulators so that the list can be modified or reused.

There are two typical uses of this class:

1. to take a persistent snapshot of an Attributes object in a ContentHandler.startElement event; or
2. to construct or modify an Attributes object in a SAX2 XMLReader or filter.

This class replaces the now-deprecated SAX1 AttributeListImpl class; in addition to supporting the updated Attributes interface rather than the deprecated AttributeList interface, it also includes a much more efficient implementation using arrays rather than Vector.

Since:

SAX 2.0

Version:

2.0beta

Author:

David Megginson, sax@megginson.com

Constructor Summary

AttributesImpl()
Construct a new, empty AttributesImpl object.

AttributesImpl(Attributes atts)
Copy an existing Attributes object.

Method Summary

void	addAttribute(java.lang.String uri, java.lang.String localName, java.lang.String rawName, java.lang.String type, java.lang.String value) Add an attribute to the end of the list.
void	clear() Clear the attribute list for reuse.
int	getIndex(java.lang.String rawName) Look up an attribute's index by raw XML 1.0 name.
int	getIndex(java.lang.String uri, java.lang.String localName) Look up an attribute's index by Namespace name.
int	getLength() Return the number of attributes in the list.
java.lang.String	getLocalName(int index) Return an attribute's local name.
java.lang.String	getRawName(int index) Return an attribute's raw XML 1.0 name.
java.lang.String	getType(int index) Return an attribute's type by index.
java.lang.String	getType(java.lang.String rawName) Look up an attribute's type by raw XML 1.0 name.
java.lang.String	getType(java.lang.String uri, java.lang.String localName) Look up an attribute's type by Namespace-qualified name.
java.lang.String	getURI(int index) Return an attribute's Namespace URI.
java.lang.String	getValue(int index) Return an attribute's value by index.
java.lang.String	getValue(java.lang.String rawName) Look up an attribute's value by raw XML 1.0 name.
java.lang.String	getValue(java.lang.String uri, java.lang.String localName) Look up an attribute's value by Namespace-qualified name.
void	removeAttribute(int index) Remove an attribute from the list.
void	setAttribute(int index, java.lang.String uri, java.lang.String localName, java.lang.String rawName, java.lang.String type, java.lang.String value) Set an attribute in the list.
void	setLocalName(int index, java.lang.String localName) Set the local name of a specific attribute.
void	setRawName(int index, java.lang.String rawName) Set the raw XML 1.0 name of a specific attribute.
void	setType(int index, java.lang.String type) Set the type of a specific attribute.
void	setURI(int index, java.lang.String uri) Set the Namespace URI of a specific attribute.
void	setValue(int index, java.lang.String value) Set the value of a specific attribute.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AttributesImpl

public AttributesImpl()

Construct a new, empty AttributesImpl object.

AttributesImpl

public AttributesImpl(Attributes atts)

Copy an existing Attributes object.

This constructor is especially useful inside a start element event.

Parameters:

atts - The existing Attributes object.

Method Detail

getLength

public int getLength()

Return the number of attributes in the list.

Specified by:

getLength in interface Attributes

Returns:

The number of attributes in the list.

See Also:

Attributes.getLength()

getURI

public java.lang.String getURI(int index)

Return an attribute's Namespace URI.

Specified by:

getURI in interface Attributes

Parameters:

index - The attribute's index (zero-based).

Returns:

The Namespace URI or the empty string if none is available.

See Also:

Attributes.getURI(int)

getLocalName

public java.lang.String getLocalName(int index)

Return an attribute's local name.

Specified by:

getLocalName in interface Attributes

Parameters:

index - The attribute's index (zero-based).

Returns:

The attribute's local name or the empty string if none is available.

See Also:

Attributes.getLocalName(int)

getRawName

public java.lang.String getRawName(int index)

Return an attribute's raw XML 1.0 name.

Specified by:

getRawName in interface Attributes

Parameters:

index - The attribute's index (zero-based).

Returns:

The attribute's raw name or the empty string if none is available.

See Also:

Attributes.getRawName(int)

getType

public java.lang.String getType(int index)

Return an attribute's type by index.

Specified by:

getType in interface Attributes

Parameters:

index - The attribute's index (zero-based).

Returns:

The attribute's type.

See Also:

Attributes.getType(int)

getValue

public java.lang.String getValue(int index)

Return an attribute's value by index.

Specified by:

getValue in interface Attributes

Parameters:

index - The attribute's index (zero-based).

Returns:

The attribute's value.

See Also:

Attributes.getValue(int)

getIndex

public int getIndex(java.lang.String uri,
                    java.lang.String localName)

Look up an attribute's index by Namespace name.

Specified by:

getIndex in interface Attributes

Parameters:

uri - The attribute's Namespace URI, or the empty string if none is available.

localName - The attribute's local name.

Returns:

The attribute's index, or -1 if none matches.

See Also:

Attributes.getIndex(java.lang.String,java.lang.String)

getIndex

public int getIndex(java.lang.String rawName)

Look up an attribute's index by raw XML 1.0 name.

Specified by:

getIndex in interface Attributes

Parameters:

rawName - The raw XML 1.0 (prefixed) name.

Returns:

The attribute's index, or -1 if none matches.

See Also:

Attributes.getIndex(java.lang.String)

getType

public java.lang.String getType(java.lang.String uri,
                                java.lang.String localName)

Look up an attribute's type by Namespace-qualified name.

Specified by:

getType in interface Attributes

Parameters:

uri - The Namespace URI, or the empty string for a name with no explicit Namespace URI.

localName - The local name.

Returns:

The attribute's type, or null if there is no matching attribute.

See Also:

Attributes.getType(java.lang.String,java.lang.String)

getType

public java.lang.String getType(java.lang.String rawName)

Look up an attribute's type by raw XML 1.0 name.

Specified by:

getType in interface Attributes

Parameters:

rawName - The raw XML 1.0 name.

Returns:

The attribute's type, or null if there is no matching attribute.

See Also:

Attributes.getType(java.lang.String)

getValue

public java.lang.String getValue(java.lang.String uri,
                                 java.lang.String localName)

Look up an attribute's value by Namespace-qualified name.

Specified by:

getValue in interface Attributes

Parameters:

uri - The Namespace URI, or the empty string for a name with no explicit Namespace URI.

localName - The local name.

Returns:

The attribute's value, or null if there is no matching attribute.

See Also:

Attributes.getValue(java.lang.String,java.lang.String)

getValue

public java.lang.String getValue(java.lang.String rawName)

Look up an attribute's value by raw XML 1.0 name.

Specified by:

getValue in interface Attributes

Parameters:

rawName - The raw XML 1.0 name.

Returns:

The attribute's value, or null if there is no matching attribute.

See Also:

Attributes.getValue(java.lang.String)

clear

public void clear()

Clear the attribute list for reuse.

Note that no memory is actually freed by this call: the current arrays are kept so that they can be reused.

addAttribute

public void addAttribute(java.lang.String uri,
                         java.lang.String localName,
                         java.lang.String rawName,
                         java.lang.String type,
                         java.lang.String value)

Add an attribute to the end of the list.

For the sake of speed, this method does no checking to see if the attribute is already in the list: that is the responsibility of the application.

Parameters:

uri - The Namespace URI, or the empty string if none is available or Namespace processing is not being performed.

localName - The local name, or the empty string if Namespace processing is not being performed.

rawName - The raw XML 1.0 name, or the empty string if raw names are not available.

type - The attribute type as a string.

value - The attribute value.

setAttribute

public void setAttribute(int index,
                         java.lang.String uri,
                         java.lang.String localName,
                         java.lang.String rawName,
                         java.lang.String type,
                         java.lang.String value)

Set an attribute in the list.

For the sake of speed, this method does no checking for name conflicts or well-formedness: such checks are the responsibility of the application.

Parameters:

index - The index of the attribute (zero-based).

uri - The Namespace URI, or the empty string if none is available or Namespace processing is not being performed.

localName - The local name, or the empty string if Namespace processing is not being performed.

rawName - The raw XML 1.0 name, or the empty string if raw names are not available.

type - The attribute type as a string.

value - The attribute value.

Throws:

java.lang.ArrayIndexOutOfBoundsException - When the supplied index does not point to an attribute in the list.

removeAttribute

public void removeAttribute(int index)

Remove an attribute from the list.

Parameters:

index - The index of the attribute (zero-based).

Throws:

java.lang.ArrayIndexOutOfBoundsException - When the supplied index does not point to an attribute in the list.

setURI

public void setURI(int index,
                   java.lang.String uri)

Set the Namespace URI of a specific attribute.

Parameters:

index - The index of the attribute (zero-based).

uri - The attribute's Namespace URI, or the empty string for none.

Throws:

java.lang.ArrayIndexOutOfBoundsException - When the supplied index does not point to an attribute in the list.

setLocalName

public void setLocalName(int index,
                         java.lang.String localName)

Set the local name of a specific attribute.

Parameters:

index - The index of the attribute (zero-based).

localName - The attribute's local name, or the empty string for none.

Throws:

java.lang.ArrayIndexOutOfBoundsException - When the supplied index does not point to an attribute in the list.

setRawName

public void setRawName(int index,
                       java.lang.String rawName)

Set the raw XML 1.0 name of a specific attribute.

Parameters:

index - The index of the attribute (zero-based).

rawName - The attribute's raw name, or the empty string for none.

Throws:

java.lang.ArrayIndexOutOfBoundsException - When the supplied index does not point to an attribute in the list.

setType

public void setType(int index,
                    java.lang.String type)

Set the type of a specific attribute.

Parameters:

index - The index of the attribute (zero-based).

type - The attribute's type.

Throws:

java.lang.ArrayIndexOutOfBoundsException - When the supplied index does not point to an attribute in the list.

setValue

public void setValue(int index,
                     java.lang.String value)

Set the value of a specific attribute.

Parameters:

index - The index of the attribute (zero-based).

value - The attribute's value.

Throws:

java.lang.ArrayIndexOutOfBoundsException - When the supplied index does not point to an attribute in the list.