org.apache.xerces.xni
Interface XMLAttributes


public interface XMLAttributes

The XMLAttributes interface defines a collection of attributes for an element. In the parser, the document source would scan the entire start element and collect the attributes. The attributes are communicated to the document handler in the startElement method.

The attributes are read-write so that subsequent stages in the document pipeline can modify the values or change the attributes that are propogated to the next stage.

Version:
$Id: XMLAttributes.java,v 1.2 2001/08/23 00:35:36 lehors Exp $
Author:
Andy Clark, IBM
See Also:
XMLDocumentHandler.startElement(org.apache.xerces.xni.QName, org.apache.xerces.xni.XMLAttributes)

Method Summary
 int addAttribute(QName attrName, java.lang.String attrType, java.lang.String attrValue)
          Adds an attribute.
 int addAttributeEntity(int attrIndex, java.lang.String entityName, int entityOffset, int entityLength)
          Adds an entity to the specified attribute.
 int getEntityCount(int attrIndex)
          Returns the number of entities for the specified attribute.
 int getEntityLength(int attrIndex, int entityIndex)
          Returns the length of the entity of a given attribute.
 java.lang.String getEntityName(int attrIndex, int entityIndex)
          Returns the name of the entity of a given attribute.
 int getEntityOffset(int attrIndex, int entityIndex)
          Returns the offset of the entity of a given attribute.
 int getIndex(java.lang.String qName)
          Look up the index of an attribute by XML 1.0 qualified name.
 int getIndex(java.lang.String uri, java.lang.String localPart)
          Look up the index of an attribute by Namespace name.
 int getLength()
          Returns the number of attributes in the list.
 java.lang.String getLocalName(int index)
          Look up an attribute's local name by index.
 void getName(int attrIndex, QName attrName)
          Sets the fields in the given QName structure with the values of the attribute name at the specified index.
 java.lang.String getNonNormalizedValue(int attrIndex)
          Returns the non-normalized value of the attribute at the specified index.
 java.lang.String getQName(int index)
          Look up an attribute's XML 1.0 qualified name by index.
 java.lang.String getType(int index)
          Look up an attribute's type by index.
 java.lang.String getType(java.lang.String qName)
          Look up an attribute's type by XML 1.0 qualified name.
 java.lang.String getType(java.lang.String uri, java.lang.String localName)
          Look up an attribute's type by Namespace name.
 java.lang.String getURI(int index)
          Look up an attribute's Namespace URI by index.
 java.lang.String getValue(int index)
          Look up an attribute's value by index.
 java.lang.String getValue(java.lang.String qName)
          Look up an attribute's value by XML 1.0 qualified name.
 java.lang.String getValue(java.lang.String uri, java.lang.String localName)
          Look up an attribute's value by Namespace name.
 boolean isSpecified(int attrIndex)
          Returns true if the attribute is specified in the instance document.
 void removeAllAttributes()
          Removes all of the attributes.
 void removeAllEntitiesFor(int attrIndex)
          Removes all of the entities for the specified attribute.
 void removeAttributeAt(int attrIndex)
          Removes the attribute at the specified index.
 void removeEntityAt(int attrIndex, int entityIndex)
          Removes the specified entity of a given attribute.
 void setEntityLength(int attrIndex, int entityIndex, int entityLength)
          Sets the entity length.
 void setEntityName(int attrIndex, int entityIndex, java.lang.String entityName)
          Sets the entity name.
 void setEntityOffset(int attrIndex, int entityIndex, int entityOffset)
          Sets the entity offset.
 void setName(int attrIndex, QName attrName)
          Sets the name of the attribute at the specified index.
 void setNonNormalizedValue(int attrIndex, java.lang.String attrValue)
          Sets the non-normalized value of the attribute at the specified index.
 void setSpecified(int attrIndex, boolean specified)
          Sets whether an attribute is specified in the instance document or not.
 void setType(int attrIndex, java.lang.String attrType)
          Sets the type of the attribute at the specified index.
 void setValue(int attrIndex, java.lang.String attrValue)
          Sets the value of the attribute at the specified index.
 

Method Detail

addAttribute

public int addAttribute(QName attrName,
                        java.lang.String attrType,
                        java.lang.String attrValue)
Adds an attribute.

Note: If an attribute of the same name already exists, the old values for the attribute are replaced by the new values.

Parameters:
attrName - The attribute name.
attrType - The attribute type. The type name is determined by the type specified for this attribute in the DTD. For example: "CDATA", "ID", "NMTOKEN", etc. However, attributes of type enumeration will have the type value specified as the pipe ('|') separated list of the enumeration values prefixed by an open parenthesis and suffixed by a close parenthesis. For example: "(true|false)".
attrValue - The attribute value.
Returns:
Returns the attribute index.

removeAllAttributes

public void removeAllAttributes()
Removes all of the attributes. This method will also remove all entities associated to the attributes.

removeAttributeAt

public void removeAttributeAt(int attrIndex)
Removes the attribute at the specified index.

Note: This operation changes the indexes of all attributes following the attribute at the specified index.

Parameters:
attrIndex - The attribute index.

addAttributeEntity

public int addAttributeEntity(int attrIndex,
                              java.lang.String entityName,
                              int entityOffset,
                              int entityLength)
Adds an entity to the specified attribute.

Note: This method does not replace any existing entities for the specified attribute, even if an entity of the same name already exists.

Note: This method does not ensure that the entities appear in increasing offset order. The caller is required to add attribute entities in increasing offset order.

Parameters:
attrIndex - The attribute index.
entityName - The entity name.
entityOffset - The entity offset.
entityLength - The entity length

removeAllEntitiesFor

public void removeAllEntitiesFor(int attrIndex)
Removes all of the entities for the specified attribute.
Parameters:
attrIndex - The attribute index.

removeEntityAt

public void removeEntityAt(int attrIndex,
                           int entityIndex)
Removes the specified entity of a given attribute.

Note: This operation changes the indexes of all entities following the entity at the specified index.

Parameters:
attrIndex - The attribute index.
entityIndex - The entity index.

getLength

public int getLength()
Returns the number of attributes in the list.

Once you know the number of attributes, you can iterate through the list.

See Also:
getURI(int), getLocalName(int), getQName(int), getType(int), getValue(int)

getIndex

public int getIndex(java.lang.String qName)
Look up the index of an attribute by XML 1.0 qualified name.
Parameters:
qName - The qualified (prefixed) name.
Returns:
The index of the attribute, or -1 if it does not appear in the list.

getIndex

public int getIndex(java.lang.String uri,
                    java.lang.String localPart)
Look up the index of an attribute by Namespace name.
Parameters:
uri - The Namespace URI, or the empty string if the name has no Namespace URI.
localName - The attribute's local name.
Returns:
The index of the attribute, or -1 if it does not appear in the list.

setName

public void setName(int attrIndex,
                    QName attrName)
Sets the name of the attribute at the specified index.
Parameters:
attrIndex - The attribute index.
attrName - The new attribute name.

getName

public void getName(int attrIndex,
                    QName attrName)
Sets the fields in the given QName structure with the values of the attribute name at the specified index.
Parameters:
attrIndex - The attribute index.
attrName - The attribute name structure to fill in.

getURI

public java.lang.String getURI(int index)
Look up an attribute's Namespace URI by index.
Parameters:
index - The attribute index (zero-based).
Returns:
The Namespace URI, or the empty string if none is available, or null if the index is out of range.
See Also:
getLength()

getLocalName

public java.lang.String getLocalName(int index)
Look up an attribute's local name by index.
Parameters:
index - The attribute index (zero-based).
Returns:
The local name, or the empty string if Namespace processing is not being performed, or null if the index is out of range.
See Also:
getLength()

getQName

public java.lang.String getQName(int index)
Look up an attribute's XML 1.0 qualified name by index.
Parameters:
index - The attribute index (zero-based).
Returns:
The XML 1.0 qualified name, or the empty string if none is available, or null if the index is out of range.
See Also:
getLength()

setType

public void setType(int attrIndex,
                    java.lang.String attrType)
Sets the type of the attribute at the specified index.
Parameters:
attrIndex - The attribute index.
attrType - The attribute type. The type name is determined by the type specified for this attribute in the DTD. For example: "CDATA", "ID", "NMTOKEN", etc. However, attributes of type enumeration will have the type value specified as the pipe ('|') separated list of the enumeration values prefixed by an open parenthesis and suffixed by a close parenthesis. For example: "(true|false)".

getType

public java.lang.String getType(int index)
Look up an attribute's type by index.

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:
index - The attribute index (zero-based).
Returns:
The attribute's type as a string, or null if the index is out of range.
See Also:
getLength()

getType

public java.lang.String getType(java.lang.String qName)
Look up an attribute's type by XML 1.0 qualified name.

See getType(int) for a description of the possible types.

Parameters:
qName - The XML 1.0 qualified name.
Returns:
The attribute type as a string, or null if the attribute is not in the list or if qualified names are not available.

getType

public java.lang.String getType(java.lang.String uri,
                                java.lang.String localName)
Look up an attribute's type by Namespace name.

See getType(int) for a description of the possible types.

Parameters:
uri - The Namespace URI, or the empty String if the name has no Namespace URI.
localName - The local name of the attribute.
Returns:
The attribute type as a string, or null if the attribute is not in the list or if Namespace processing is not being performed.

setValue

public void setValue(int attrIndex,
                     java.lang.String attrValue)
Sets the value of the attribute at the specified index.
Parameters:
attrIndex - The attribute index.
attrValue - The new attribute value.

getValue

public java.lang.String getValue(int index)
Look up an attribute's value by index.

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

Parameters:
index - The attribute index (zero-based).
Returns:
The attribute's value as a string, or null if the index is out of range.
See Also:
getLength()

getValue

public java.lang.String getValue(java.lang.String qName)
Look up an attribute's value by XML 1.0 qualified name.

See getValue(int) for a description of the possible values.

Parameters:
qName - The XML 1.0 qualified name.
Returns:
The attribute value as a string, or null if the attribute is not in the list or if qualified names are not available.

getValue

public java.lang.String getValue(java.lang.String uri,
                                 java.lang.String localName)
Look up an attribute's value by Namespace name.

See getValue(int) for a description of the possible values.

Parameters:
uri - The Namespace URI, or the empty String if the name has no Namespace URI.
localName - The local name of the attribute.
Returns:
The attribute value as a string, or null if the attribute is not in the list.

setNonNormalizedValue

public void setNonNormalizedValue(int attrIndex,
                                  java.lang.String attrValue)
Sets the non-normalized value of the attribute at the specified index.
Parameters:
attrIndex - The attribute index.
attrValue - The new non-normalized attribute value.

getNonNormalizedValue

public java.lang.String getNonNormalizedValue(int attrIndex)
Returns the non-normalized value of the attribute at the specified index. If no non-normalized value is set, this method will return the same value as the getValue(int) method.
Parameters:
attrIndex - The attribute index.

setSpecified

public void setSpecified(int attrIndex,
                         boolean specified)
Sets whether an attribute is specified in the instance document or not.
Parameters:
attrIndex - The attribute index.
specified - True if the attribute is specified in the instance document.

isSpecified

public boolean isSpecified(int attrIndex)
Returns true if the attribute is specified in the instance document.
Parameters:
attrIndex - The attribute index.

getEntityCount

public int getEntityCount(int attrIndex)
Returns the number of entities for the specified attribute.
Parameters:
attrIndex - The attribute index.

setEntityName

public void setEntityName(int attrIndex,
                          int entityIndex,
                          java.lang.String entityName)
Sets the entity name.
Parameters:
attrIndex - The attribute index.
entityIndex - The entity index.
entityName - The new entity name.

getEntityName

public java.lang.String getEntityName(int attrIndex,
                                      int entityIndex)
Returns the name of the entity of a given attribute.
Parameters:
attrIndex - The attribute index.
entityIndex - The entity index.

setEntityOffset

public void setEntityOffset(int attrIndex,
                            int entityIndex,
                            int entityOffset)
Sets the entity offset.
Parameters:
attrIndex - The attribute index.
entityIndex - The entity index.
entityOffset - The new entity offset.

getEntityOffset

public int getEntityOffset(int attrIndex,
                           int entityIndex)
Returns the offset of the entity of a given attribute.
Parameters:
attrIndex - The attribute index.
entityIndex - The entity index.

setEntityLength

public void setEntityLength(int attrIndex,
                            int entityIndex,
                            int entityLength)
Sets the entity length.
Parameters:
attrIndex - The attribute index.
entityIndex - The entity index.
entityLength - The new entity length.

getEntityLength

public int getEntityLength(int attrIndex,
                           int entityIndex)
Returns the length of the entity of a given attribute.
Parameters:
attrIndex - The attribute index.
entityIndex - The entity index.


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