/*
* $Id: MimeHeaders.java,v 1.5 2005/04/05 20:49:49 mk125090 Exp $
* $Revision: 1.5 $
* $Date: 2005/04/05 20:49:49 $
*/
/*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the License). You may not use this file except in
* compliance with the License.
*
* You can obtain a copy of the license at
* https://glassfish.dev.java.net/public/CDDLv1.0.html.
* See the License for the specific language governing
* permissions and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* Header Notice in each file and include the License file
* at https://glassfish.dev.java.net/public/CDDLv1.0.html.
* If applicable, add the following below the CDDL Header,
* with the fields enclosed by brackets [] replaced by
* you own identifying information:
* "Portions Copyrighted [year] [name of copyright owner]"
*
* Copyright 2006 Sun Microsystems Inc. All Rights Reserved
*/
package javax.xml.soap;
import java.util.Iterator;
import java.util.Vector;
/**
* A container for <code>MimeHeader</code> objects, which represent
* the MIME headers present in a MIME part of a message.
*
* <p>This class is used primarily when an application wants to
* retrieve specific attachments based on certain MIME headers and
* values. This class will most likely be used by implementations of
* <code>AttachmentPart</code> and other MIME dependent parts of the SAAJ
* API.
* @see SOAPMessage#getAttachments
* @see AttachmentPart
*/
public class MimeHeaders {
private Vector headers;
/**
* Constructs a default <code>MimeHeaders</code> object initialized with
* an empty <code>Vector</code> object.
*/
public MimeHeaders() {
headers = new Vector();
}
/**
* Returns all of the values for the specified header as an array of
* <code>String</code> objects.
*
* @param name the name of the header for which values will be returned
* @return a <code>String</code> array with all of the values for the
* specified header
* @see #setHeader
*/
public String[] getHeader(String name) {
Vector values = new Vector();
for(int i = 0; i < headers.size(); i++) {
MimeHeader hdr = (MimeHeader) headers.elementAt(i);
if (hdr.getName().equalsIgnoreCase(name)
&& hdr.getValue() != null)
values.addElement(hdr.getValue());
}
if (values.size() == 0)
return null;
String r[] = new String[values.size()];
values.copyInto(r);
return r;
}
/**
* Replaces the current value of the first header entry whose name matches
* the given name with the given value, adding a new header if no existing header
* name matches. This method also removes all matching headers after the first one.
* <P>
* Note that RFC822 headers can contain only US-ASCII characters.
*
* @param name a <code>String</code> with the name of the header for
* which to search
* @param value a <code>String</code> with the value that will replace the
* current value of the specified header
*
* @exception IllegalArgumentException if there was a problem in the
* mime header name or the value being set
* @see #getHeader
*/
public void setHeader(String name, String value)
{
boolean found = false;
if ((name == null) || name.equals(""))
throw new IllegalArgumentException("Illegal MimeHeader name");
for(int i = 0; i < headers.size(); i++) {
MimeHeader hdr = (MimeHeader) headers.elementAt(i);
if (hdr.getName().equalsIgnoreCase(name)) {
if (!found) {
headers.setElementAt(new MimeHeader(hdr.getName(),
value), i);
found = true;
}
else
headers.removeElementAt(i--);
}
}
if (!found)
addHeader(name, value);
}
/**
* Adds a <code>MimeHeader</code> object with the specified name and value
* to this <code>MimeHeaders</code> object's list of headers.
* <P>
* Note that RFC822 headers can contain only US-ASCII characters.
*
* @param name a <code>String</code> with the name of the header to
* be added
* @param value a <code>String</code> with the value of the header to
* be added
*
* @exception IllegalArgumentException if there was a problem in the
* mime header name or value being added
*/
public void addHeader(String name, String value)
{
if ((name == null) || name.equals(""))
throw new IllegalArgumentException("Illegal MimeHeader name");
int pos = headers.size();
for(int i = pos - 1 ; i >= 0; i--) {
MimeHeader hdr = (MimeHeader) headers.elementAt(i);
if (hdr.getName().equalsIgnoreCase(name)) {
headers.insertElementAt(new MimeHeader(name, value),
i+1);
return;
}
}
headers.addElement(new MimeHeader(name, value));
}
/**
* Remove all <code>MimeHeader</code> objects whose name matches the
* given name.
*
* @param name a <code>String</code> with the name of the header for
* which to search
*/
public void removeHeader(String name) {
for(int i = 0; i < headers.size(); i++) {
MimeHeader hdr = (MimeHeader) headers.elementAt(i);
if (hdr.getName().equalsIgnoreCase(name))
headers.removeElementAt(i--);
}
}
/**
* Removes all the header entries from this <code>MimeHeaders</code> object.
*/
public void removeAllHeaders() {
headers.removeAllElements();
}
/**
* Returns all the <code>MimeHeader</code>s in this <code>MimeHeaders</code> object.
*
* @return an <code>Iterator</code> object over this <code>MimeHeaders</code>
* object's list of <code>MimeHeader</code> objects
*/
public Iterator getAllHeaders() {
return headers.iterator();
}
class MatchingIterator implements Iterator {
private boolean match;
private Iterator iterator;
private String[] names;
private Object nextHeader;
MatchingIterator(String[] names, boolean match) {
this.match = match;
this.names = names;
this.iterator = headers.iterator();
}
private Object nextMatch() {
next:
while (iterator.hasNext()) {
MimeHeader hdr = (MimeHeader) iterator.next();
if (names == null)
return match ? null : hdr;
for(int i = 0; i < names.length; i++)
if (hdr.getName().equalsIgnoreCase(names[i]))
if (match)
return hdr;
else
continue next;
if (!match)
return hdr;
}
return null;
}
public boolean hasNext() {
if (nextHeader == null)
nextHeader = nextMatch();
return nextHeader != null;
}
public Object next() {
// hasNext should've prefetched the header for us,
// return it.
if (nextHeader != null) {
Object ret = nextHeader;
nextHeader = null;
return ret;
}
if (hasNext())
return nextHeader;
return null;
}
public void remove() {
iterator.remove();
}
}
/**
* Returns all the <code>MimeHeader</code> objects whose name matches
* a name in the given array of names.
*
* @param names an array of <code>String</code> objects with the names
* for which to search
* @return an <code>Iterator</code> object over the <code>MimeHeader</code>
* objects whose name matches one of the names in the given list
*/
public Iterator getMatchingHeaders(String[] names) {
return new MatchingIterator(names, true);
}
/**
* Returns all of the <code>MimeHeader</code> objects whose name does not
* match a name in the given array of names.
*
* @param names an array of <code>String</code> objects with the names
* for which to search
* @return an <code>Iterator</code> object over the <code>MimeHeader</code>
* objects whose name does not match one of the names in the given list
*/
public Iterator getNonMatchingHeaders(String[] names) {
return new MatchingIterator(names, false);
}
}
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