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Xerces2 is the next generation of high performance, fully compliant XML parsers in the Apache Xerces family. This new version of Xerces introduces the Xerces Native Interface (XNI), a complete framework for building parser components and configurations that is extremely modular and easy to program.
The Apache Xerces2 parser is the reference implementation of XNI but other parser components, configurations, and parsers can be written using the Xerces Native Interface. For complete design and implementation documents, refer to the XNI Manual.
Xerces2 is a fully conforming XML Schema 1.0 processor. A partial experimental implementation of the XML Schema 1.1 Structures and Datatypes Working Drafts (December 2009) and an experimental implementation of the XML Schema Definition Language (XSD): Component Designators (SCD) Candidate Recommendation (January 2010) are provided for evaluation. For more information, refer to the XML Schema page.
Xerces2 also provides a complete implementation of the Document Object Model Level 3 Core and Load/Save W3C Recommendations and provides a complete implementation of the XML Inclusions (XInclude) W3C Recommendation. It also provides support for OASIS XML Catalogs v1.1.
Xerces2 is able to parse documents written according to the XML 1.1 Recommendation, except that it does not yet provide an option to enable normalization checking as described in section 2.13 of this specification. It also handles namespaces according to the XML Namespaces 1.1 Recommendation, and will correctly serialize XML 1.1 documents if the DOM level 3 load/save APIs are in use.
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package sax.helpers;
import org.xml.sax.Attributes;
/**
* An Attributes implementation that can perform more operations
* than the attribute list helper supplied with the standard SAX2
* distribution.
*
* @version $Id: AttributesImpl.java 950356 2010-06-02 03:43:43Z mrglavas $
*/
public class AttributesImpl
implements Attributes {
//
// Data
//
/** Head node. */
private ListNode head;
/** Tail node. */
private ListNode tail;
/** Length. */
private int length;
//
// Attributes methods
//
/** Returns the number of attributes. */
public int getLength() {
return length;
}
/** Returns the index of the specified attribute. */
public int getIndex(String raw) {
ListNode place = head;
int index = 0;
while (place != null) {
if (place.raw.equals(raw)) {
return index;
}
index++;
place = place.next;
}
return -1;
}
/** Returns the index of the specified attribute. */
public int getIndex(String uri, String local) {
ListNode place = head;
int index = 0;
while (place != null) {
if (place.uri.equals(uri) && place.local.equals(local)) {
return index;
}
index++;
place = place.next;
}
return -1;
}
/** Returns the attribute URI by index. */
public String getURI(int index) {
ListNode node = getListNodeAt(index);
return node != null ? node.uri : null;
} // getURI(int):String
/** Returns the attribute local name by index. */
public String getLocalName(int index) {
ListNode node = getListNodeAt(index);
return node != null ? node.local : null;
} // getLocalName(int):String
/** Returns the attribute raw name by index. */
public String getQName(int index) {
ListNode node = getListNodeAt(index);
return node != null ? node.raw : null;
} // getQName(int):String
/** Returns the attribute type by index. */
public String getType(int index) {
ListNode node = getListNodeAt(index);
return (node != null) ? node.type : null;
} // getType(int):String
/** Returns the attribute type by uri and local. */
public String getType(String uri, String local) {
ListNode node = getListNode(uri, local);
return (node != null) ? node.type : null;
} // getType(String,String):String
/** Returns the attribute type by raw name. */
public String getType(String raw) {
ListNode node = getListNode(raw);
return (node != null) ? node.type : null;
} // getType(String):String
/** Returns the attribute value by index. */
public String getValue(int index) {
ListNode node = getListNodeAt(index);
return (node != null) ? node.value : null;
} // getType(int):String
/** Returns the attribute value by uri and local. */
public String getValue(String uri, String local) {
ListNode node = getListNode(uri, local);
return (node != null) ? node.value : null;
} // getType(String):String
/** Returns the attribute value by raw name. */
public String getValue(String raw) {
ListNode node = getListNode(raw);
return (node != null) ? node.value : null;
} // getType(String):String
//
// Public methods
//
/** Adds an attribute. */
public void addAttribute(String raw, String type, String value) {
addAttribute(null, null, raw, type, value);
}
/** Adds an attribute. */
public void addAttribute(String uri, String local, String raw,
String type, String value) {
ListNode node = new ListNode(uri, local, raw, type, value);
if (length == 0) {
head = node;
}
else {
tail.next = node;
}
tail = node;
length++;
} // addAttribute(String,StringString,String,String)
/** Inserts an attribute. */
public void insertAttributeAt(int index,
String raw, String type, String value) {
insertAttributeAt(index, null, null, raw, type, value);
}
/** Inserts an attribute. */
public void insertAttributeAt(int index,
String uri, String local, String raw,
String type, String value) {
// if list is empty, add attribute
if (length == 0 || index >= length) {
addAttribute(uri, local, raw, type, value);
return;
}
// insert at beginning of list
ListNode node = new ListNode(uri, local, raw, type, value);
if (index < 1) {
node.next = head;
head = node;
}
else {
ListNode prev = getListNodeAt(index - 1);
node.next = prev.next;
prev.next = node;
}
length++;
} // insertAttributeAt(int,String,String,String,String,String)
/** Removes an attribute. */
public void removeAttributeAt(int index) {
if (length == 0) {
return;
}
if (index == 0) {
head = head.next;
if (head == null) {
tail = null;
}
length--;
}
else {
ListNode prev = getListNodeAt(index - 1);
ListNode node = getListNodeAt(index);
if (node != null) {
prev.next = node.next;
if (node == tail) {
tail = prev;
}
length--;
}
}
} // removeAttributeAt(int)
/** Removes the specified attribute. */
public void removeAttribute(String raw) {
removeAttributeAt(getIndex(raw));
}
/** Removes the specified attribute. */
public void removeAttribute(String uri, String local) {
removeAttributeAt(getIndex(uri, local));
}
//
// Private methods
//
/** Returns the node at the specified index. */
private ListNode getListNodeAt(int i) {
for (ListNode place = head; place != null; place = place.next) {
if (--i == -1) {
return place;
}
}
return null;
} // getListNodeAt(int):ListNode
/** Returns the first node with the specified uri and local. */
public ListNode getListNode(String uri, String local) {
if (uri != null && local != null) {
ListNode place = head;
while (place != null) {
if (place.uri != null && place.local != null &&
place.uri.equals(uri) && place.local.equals(local)) {
return place;
}
place = place.next;
}
}
return null;
} // getListNode(String,String):ListNode
/** Returns the first node with the specified raw name. */
private ListNode getListNode(String raw) {
if (raw != null) {
for (ListNode place = head; place != null; place = place.next) {
if (place.raw != null && place.raw.equals(raw)) {
return place;
}
}
}
return null;
} // getListNode(String):ListNode
//
// Object methods
//
/** Returns a string representation of this object. */
public String toString() {
StringBuffer str = new StringBuffer();
str.append('[');
str.append("len=");
str.append(length);
str.append(", {");
for (ListNode place = head; place != null; place = place.next) {
str.append(place.toString());
if (place.next != null) {
str.append(", ");
}
}
str.append("}]");
return str.toString();
} // toString():String
//
// Classes
//
/**
* An attribute node.
*/
static class ListNode {
//
// Data
//
/** Attribute uri. */
public String uri;
/** Attribute local. */
public String local;
/** Attribute raw. */
public String raw;
/** Attribute type. */
public String type;
/** Attribute value. */
public String value;
/** Next node. */
public ListNode next;
//
// Constructors
//
/** Constructs a list node. */
public ListNode(String uri, String local, String raw,
String type, String value) {
this.uri = uri;
this.local = local;
this.raw = raw;
this.type = type;
this.value = value;
} // (String,String,String,String,String)
//
// Object methods
//
/** Returns string representation of this object. */
public String toString() {
return raw != null ? raw : local;
}
} // class ListNode
} // class AttributesImpl