Bajji Pat

Prototype is used when you are to clone an object i.e. creating customized objects, whereas a template design pattern is used when you want your objects to abide to a specific sequence of processing (etc. an algorithm)
[ May 05, 2006: Message edited by: Bajji Pat ]

D is the correct answer, Object Mapping is mapping data from some system into Object properties.

Originally posted by Apratim Khandalkar:
You are creating a web application for an online product ordering system. You have decided to use connection pooling to reduce load on the databases. Since you have many databases, you want to create one pool instance of the ConnectionPool class for each database. Depending on what is requested, you may have to connect to a variable number of databases. What pattern should you use?
a) Abstract factoryb) Factory Method
c) Builder d) Prototype
e) Singleton
The correct answer is Singleton but i think it should be abstract factory?

I think Singleton is the answer since each of the delegating component (say different sub-systems of the ordering system) would know the DB to connect to and it cannot be from a centralized place (i.e. We get to mention the target DB to connect to from the controller) in which case Abstract Factory would be correct answer!!
[ May 04, 2006: Message edited by: Bajji Pat ]

What do we want to acheive here??, is it that you only want n instances of the object to exist??

In that case what is to be done after n instances are created - throw an exception/ the behavior changes to a singleton then on??

You can use the following snippet- the characters() method would catch any CDATA sections within XML:

package com.saxparser; import java.io.ByteArrayInputStream; import javax.xml.parsers.SAXParser; import javax.xml.parsers.SAXParserFactory; import org.xml.sax.Attributes; import org.xml.sax.InputSource; import org.xml.sax.SAXException; import org.xml.sax.helpers.DefaultHandler; import org.xml.sax.helpers.ParserAdapter; public class ServerSideSAXParser extends DefaultHandler { private static String START_TAG= "start"; public synchronized void startElement(String namespace, String localName, String qName, Attributes atts) { if (localName.equals(START_TAG)) { System.out.println(START_TAG+" encountered"); } } public synchronized void characters(char[] cbuf, int start, int len) { System.out.print("Characters:"); System.out.println(new String(cbuf,start,len)); } public synchronized void processingInstruction(String target, String data) throws SAXException { System.out.println("ProcessingInstruction:"+target+" "+data); } public synchronized void parseString(String msgXML) throws Exception { System.out.println("Processing Message " + msgXML); SAXParserFactory spf = SAXParserFactory.newInstance(); SAXParser sp = spf.newSAXParser(); System.out.println("CLASS :"+sp.getClass()); System.out.println(System.getProperty("javax.xml.parsers.SAXParserFactory")); ParserAdapter pa = new ParserAdapter(sp.getParser()); pa.setContentHandler(this); byte bytearray[] = msgXML.getBytes(); ByteArrayInputStream bais = new ByteArrayInputStream(bytearray); pa.parse(new InputSource(bais)); } public static void main(String[] args)throws Exception { ServerSideSAXParser ref = new ServerSideSAXParser(); ref.parseString("<start><![CDATA['This is the cdata']]></start>"); } }
[ December 07, 2005: Message edited by: Bajji Pat ]

Hi Ganesh,

The problem must be with the mapping in your web.xml file .

Did u perform the servlet mapping (in web.xml):
ex
<servlet>
<servlet-name>MyServlet</servlet-name>
<servlet-class>com.servlet.SampleServlet</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>MyServlet</servlet-name>
<url-pattern>/servlet</url-pattern>
</servlet-mapping>

In the above case you can invoke this servlet(assuming that u have it inside ROOT ) as
http://localhost:8080/servlet

Hope this helps

Balaji

Probably a classpath problem!! Did u try setting the classpath??

Could u pls post the code??
[ June 13, 2005: Message edited by: Bajji Pat ]

It is because, mostly we use ParserAdapter and not the SAXParser as such, and we use PA's parse method that takes an InputSource or a systemId. We do it because ParserAdapter wraps SAX1 and makes it act as a SAX2 ,with feature, property, and Namespace support etc..

Hope this helps

Balaji
[ May 20, 2005: Message edited by: Bajji Pat ]

I tried parsing the same string and got the results correctly

SAXParserFactory spf = SAXParserFactory.newInstance(); // Setting features of the parser spf.setValidating(false); javax.xml.parsers.SAXParser sp = spf.newSAXParser(); ParserAdapter pa = new ParserAdapter(sp.getParser()); pa.setContentHandler(new SAXParser()); String tobeParsed = "<tag>A&B1</tag>"; byte[] barray = tobeParsed.getBytes(); ByteArrayInputStream bais = new ByteArrayInputStream(barray); pa.parse(new InputSource(bais));

Parsing the file using a SAX parser would not load it onto the memory.
U can try using one.

U can do it like this

st = ""+i;

Hi,

use window.open(filename?parameterlist);

and in the target html file

call a function onload of html and
use
url = this.location.href
// this would give the entire url
// use split command to retrieve various values
// this returns an array with tokens - just like string tokenizer in java

parameterList=url.split("?")

// use your parameter separator instead of ?

and then use split again on the parameterList[0] to total to retrieve the values..


Balaji

Hi,

Is there any opensource implementation of Presence(generic) framework compatible with sip,xmpp ?

If anyone has attempted this,please let me know

Rgds,
Bajji

Hi,

It can be done as follows:

on the button include onClick attribute and include a javascript function focus()

and in the script part

function focus()
{
window.location.href="yourhtmlname.html#the href name";
}
supposing u want to focus the text <a name="the href name">THIS THE TEXT</a>

Balaji

Hi

U can match the "\n" (newline) and replace them with <br/>

Balaji