+// Attributes2.java - extended Attributes
+// http://www.saxproject.org
+// Public Domain: no warranty.
+// $Id: Attributes2.java,v 1.6 2004/03/08 13:01:00 dmegginson Exp $
+
+package org.xml.sax.ext;
+
+import org.xml.sax.Attributes;
+
+
+/**
+ * SAX2 extension to augment the per-attribute information
+ * provided though {@link Attributes}.
+ * If an implementation supports this extension, the attributes
+ * provided in {@link org.xml.sax.ContentHandler#startElement
+ * ContentHandler.startElement() } will implement this interface,
+ * and the <em>http://xml.org/sax/features/use-attributes2</em>
+ * feature flag will have the value <em>true</em>.
+ *
+ * <blockquote>
+ * <em>This module, both source code and documentation, is in the
+ * Public Domain, and comes with <strong>NO WARRANTY</strong>.</em>
+ * </blockquote>
+ *
+ * <p> XMLReader implementations are not required to support this
+ * information, and it is not part of core-only SAX2 distributions.</p>
+ *
+ * <p>Note that if an attribute was defaulted (<em>!isSpecified()</em>)
+ * it will of necessity also have been declared (<em>isDeclared()</em>)
+ * in the DTD.
+ * Similarly if an attribute's type is anything except CDATA, then it
+ * must have been declared.
+ * </p>
+ *
+ * @since SAX 2.0 (extensions 1.1 alpha)
+ * @author David Brownell
+ * @version TBS
+ */
+public interface Attributes2 extends Attributes
+{
+ /**
+ * Returns false unless the attribute was declared in the DTD.
+ * This helps distinguish two kinds of attributes that SAX reports
+ * as CDATA: ones that were declared (and hence are usually valid),
+ * and those that were not (and which are never valid).
+ *
+ * @param index The attribute index (zero-based).
+ * @return true if the attribute was declared in the DTD,
+ * false otherwise.
+ * @exception java.lang.ArrayIndexOutOfBoundsException When the
+ * supplied index does not identify an attribute.
+ */
+ public boolean isDeclared (int index);
+
+ /**
+ * Returns false unless the attribute was declared in the DTD.
+ * This helps distinguish two kinds of attributes that SAX reports
+ * as CDATA: ones that were declared (and hence are usually valid),
+ * and those that were not (and which are never valid).
+ *
+ * @param qName The XML qualified (prefixed) name.
+ * @return true if the attribute was declared in the DTD,
+ * false otherwise.
+ * @exception java.lang.IllegalArgumentException When the
+ * supplied name does not identify an attribute.
+ */
+ public boolean isDeclared (String qName);
+
+ /**
+ * Returns false unless the attribute was declared in the DTD.
+ * This helps distinguish two kinds of attributes that SAX reports
+ * as CDATA: ones that were declared (and hence are usually valid),
+ * and those that were not (and which are never valid).
+ *
+ * <p>Remember that since DTDs do not "understand" namespaces, the
+ * namespace URI associated with an attribute may not have come from
+ * the DTD. The declaration will have applied to the attribute's
+ * <em>qName</em>.
+ *
+ * @param uri The Namespace URI, or the empty string if
+ * the name has no Namespace URI.
+ * @param localName The attribute's local name.
+ * @return true if the attribute was declared in the DTD,
+ * false otherwise.
+ * @exception java.lang.IllegalArgumentException When the
+ * supplied names do not identify an attribute.
+ */
+ public boolean isDeclared (String uri, String localName);
+
+ /**
+ * Returns true unless the attribute value was provided
+ * by DTD defaulting.
+ *
+ * @param index The attribute index (zero-based).
+ * @return true if the value was found in the XML text,
+ * false if the value was provided by DTD defaulting.
+ * @exception java.lang.ArrayIndexOutOfBoundsException When the
+ * supplied index does not identify an attribute.
+ */
+ public boolean isSpecified (int index);
+
+ /**
+ * Returns true unless the attribute value was provided
+ * by DTD defaulting.
+ *
+ * <p>Remember that since DTDs do not "understand" namespaces, the
+ * namespace URI associated with an attribute may not have come from
+ * the DTD. The declaration will have applied to the attribute's
+ * <em>qName</em>.
+ *
+ * @param uri The Namespace URI, or the empty string if
+ * the name has no Namespace URI.
+ * @param localName The attribute's local name.
+ * @return true if the value was found in the XML text,
+ * false if the value was provided by DTD defaulting.
+ * @exception java.lang.IllegalArgumentException When the
+ * supplied names do not identify an attribute.
+ */
+ public boolean isSpecified (String uri, String localName);
+
+ /**
+ * Returns true unless the attribute value was provided
+ * by DTD defaulting.
+ *
+ * @param qName The XML qualified (prefixed) name.
+ * @return true if the value was found in the XML text,
+ * false if the value was provided by DTD defaulting.
+ * @exception java.lang.IllegalArgumentException When the
+ * supplied name does not identify an attribute.
+ */
+ public boolean isSpecified (String qName);
+}