Nulls vs. ErrorsI started to supportObjectNotFoundExceptionsfor failed gets but the overhead and cumbersome coding needed to surround a simple get method is ridiculous. Instead the JCS return null.
Nulls vs. ErrorsI started to supportObjectNotFoundExceptionsfor failed gets but the overhead and cumbersome coding needed to surround a simple get method is ridiculous. Instead the JCS return null.
is huge, but unlike the usual huge books, the content is very interesting. It can be used as reference material, or as toilet book (to learn things while you're wasting time in the toilets).public int hashCode() {
int h = hash;
if (h == 0) {
int off = offset;
char val[] = value;
int len = count;
for (int i = 0; i < len; i++) h = 31*h + val[off ++];
hash = h; } return h;} is huge, but unlike the usual huge books, the content is very interesting. It can be used as reference material, or as toilet book (to learn things while you're wasting time in the toilets).public int hashCode() {
int h = hash;
if (h == 0) {
int off = offset;
char val[] = value;
int len = count;
for (int i = 0; i < len; i++) h = 31*h + val[off ++];
hash = h; } return h;} private HttpClient initHttpClient()
{
HttpClient client = new HttpClient();
List authPrefs = new ArrayList(2);
authPrefs.add(AuthPolicy.DIGEST );
authPrefs.add(AuthPolicy.BASIC);
client.getParams().setParameter (AuthPolicy.AUTH_SCHEME_PRIORITY, authPrefs);
client.getParams().setAuthenticationPreemptive(true);
Credentials defaultcreds = new UsernamePasswordCredentials(user, password);
client.getState().setCredentials(new AuthScope( "www.blogger.com", 443, AuthScope.ANY_REALM), defaultcreds);
return client;
}
public Collection getPosts() throws HttpException, IOException, ParserConfigurationException, SAXException, DocumentException
{
GetMethod get = new GetMethod("https://www.blogger.com/atom" +"/"+blogId);
int statusCode = client.executeMethod(get);
if (statusCode != HttpStatus.SC_OK)
{
throw new RuntimeException(" Could not make HTTP request properly: " +get.getStatusLine());
}
InputStream response = get.getResponseBodyAsStream();
SAXReader reader = new SAXReader();
Document doc = reader.read(response);
Collection posts = new ArrayList();
List entries = doc.getRootElement().elements("entry");
if (LOG.isDebugEnabled())
{
LOG.debug("found "+entries.size()+" entries");
}
for (int i = 0; i <entries.size();i ++)
{
Element entry = (Element) entries.get(i);
Map m = new HashMap();
for (Iterator it = entry.elementIterator();it. hasNext();)
{
Element detail = (Element) it.next();
String name = detail.getName();
if (name.equals("link"))
{
m.put("link ",detail.attribute("href").getValue());
}
else if (name. equals("content"))
{
m.put("content",detail.asXML());
}
else
{
m.put(name,detail.getTextTrim());
}
}
posts.add(m);
if (LOG.isDebugEnabled())
{
LOG.debug( "found="+m.get(" title")+", url= "+m.get("link"));
}
}
return posts;
}
private String createXmlForCreatePost(String postTitle, String postContent) throws IOException, DocumentException
{
SAXReader xmlReader = new SAXReader();
xmlReader.setValidation(false );
Document doc = DocumentHelper.createDocument();
QName rootName = DocumentHelper.createQName("entry", new Namespace("", "http://purl.org/atom/ns# "));
Element root = doc.addElement(rootName);
Element title = root.addElement("title");
title.addAttribute("mode"," escaped");
title.addAttribute("type ","text/plain");
title.setText (postTitle);
Element generator = root.addElement("generator ");
generator.addAttribute("url" , "http://31416.org");
generator. setText("31416 Java Generator ");
Element content = root.addElement("content ");
content.addAttribute("type" , "application/xhtml+xml");
//Element div = content.addElement(DocumentHelper.createQName("div",new Namespace("","http://www.w3.org/1999/xhtml")));
//div.add(...); //YOUR XHTML HERE
StringWriter result = new StringWriter();
XMLWriter writer = new XMLWriter (result);
writer.write(doc);
writer.close();
return result.toString();
}
private HttpClient initHttpClient()
{
HttpClient client = new HttpClient();
List authPrefs = new ArrayList(2);
authPrefs.add(AuthPolicy.DIGEST );
authPrefs.add(AuthPolicy.BASIC);
client.getParams().setParameter (AuthPolicy.AUTH_SCHEME_PRIORITY, authPrefs);
client.getParams().setAuthenticationPreemptive(true);
Credentials defaultcreds = new UsernamePasswordCredentials(user, password);
client.getState().setCredentials(new AuthScope( "www.blogger.com", 443, AuthScope.ANY_REALM), defaultcreds);
return client;
}
public Collection getPosts() throws HttpException, IOException, ParserConfigurationException, SAXException, DocumentException
{
GetMethod get = new GetMethod("https://www.blogger.com/atom" +"/"+blogId);
int statusCode = client.executeMethod(get);
if (statusCode != HttpStatus.SC_OK)
{
throw new RuntimeException(" Could not make HTTP request properly: " +get.getStatusLine());
}
InputStream response = get.getResponseBodyAsStream();
SAXReader reader = new SAXReader();
Document doc = reader.read(response);
Collection posts = new ArrayList();
List entries = doc.getRootElement().elements("entry");
if (LOG.isDebugEnabled())
{
LOG.debug("found "+entries.size()+" entries");
}
for (int i = 0; i <entries.size();i ++)
{
Element entry = (Element) entries.get(i);
Map m = new HashMap();
for (Iterator it = entry.elementIterator();it. hasNext();)
{
Element detail = (Element) it.next();
String name = detail.getName();
if (name.equals("link"))
{
m.put("link ",detail.attribute("href").getValue());
}
else if (name. equals("content"))
{
m.put("content",detail.asXML());
}
else
{
m.put(name,detail.getTextTrim());
}
}
posts.add(m);
if (LOG.isDebugEnabled())
{
LOG.debug( "found="+m.get(" title")+", url= "+m.get("link"));
}
}
return posts;
}
private String createXmlForCreatePost(String postTitle, String postContent) throws IOException, DocumentException
{
SAXReader xmlReader = new SAXReader();
xmlReader.setValidation(false );
Document doc = DocumentHelper.createDocument();
QName rootName = DocumentHelper.createQName("entry", new Namespace("", "http://purl.org/atom/ns# "));
Element root = doc.addElement(rootName);
Element title = root.addElement("title");
title.addAttribute("mode"," escaped");
title.addAttribute("type ","text/plain");
title.setText (postTitle);
Element generator = root.addElement("generator ");
generator.addAttribute("url" , "http://31416.org");
generator. setText("31416 Java Generator ");
Element content = root.addElement("content ");
content.addAttribute("type" , "application/xhtml+xml");
//Element div = content.addElement(DocumentHelper.createQName("div",new Namespace("","http://www.w3.org/1999/xhtml")));
//div.add(...); //YOUR XHTML HERE
StringWriter result = new StringWriter();
XMLWriter writer = new XMLWriter (result);
writer.write(doc);
writer.close();
return result.toString();
}
JAX-WS still sucks!
JAX-WS still sucks!
Si l'agrégat est détruit (ou copié), ses composants le sont aussi.
les composants (en tant qu'ils sont composants) ont une durée de vie incluse dans celle de leur composé.
If the aggregate is destroyed (or copied), its components are destroyed (or copied) as well.or
components (while they are components) lifetime is included in the one of their aggregate
Composition [...] is exactly like Aggregation except that the lifetime of the 'part' is controlled by the 'whole'. This control may be direct or transitive. That is, the 'whole' may take direct responsibility for creating or destroying the 'part', or it may accept an already created part, and later pass it on to some other whole that assumes responsibility for it.
The "no sharing" rule is the key to composition . Another assumption is that if you delete the polygon, it should automatically ensure that any owned Points also are deleted .
An association may represent a composite aggregation (i.e., a whole/part relationship). Only binary associations can be aggregations. Composite aggregation is a strong form of aggregation that requires a part instance be included in at most one composite at a time. If a composite is deleted, all of its parts are normally deleted with it. Note that a part can (where allowed) be removed from a composite before the composite is deleted, and thus not be deleted as part of the composite. Compositions define transitive asymmetric relationships—their links form a directed, acyclic graph.