Implementation of a parse tree in java (HELP!!!)

I want to be able to do this in java, please how can i implement this.
     +
          a *
          b c

It's not entirely clear what you want to do. That expression in infix notation (standard notation) would be "(b a c) + *" which doesn't make any sense. The leaves of the tree should be values, and non-leaf nodes should be operators. You can implement this by using a tree datatype in Java.

Similar Messages

Implementation of a parse tree in Java (Urgent)

How best can a parse tree be implemented in java, i have read some online information that suggest use of data structures, but i am still not clear on how to do it.

Well, you need a tree. A logical way to structure a tree is out of "node" objects. A node presumeably will hold some data, and may also have one or more subnodes.
So the root of your effort ought to go into designing the node - data it will hold, and getters and setters, and operations to walk the tree.

How to parse XML to Java object... please help really stuck

Thank you for reading this email...
If I have a **DTD** like:
<!ELEMENT person (name, age)>
<!ATTLIST person
     id ID #REQUIRED
>
<!ELEMENT name ((family, given) | (given, family))>
<!ELEMENT age (#PCDATA)>
<!ELEMENT family (#PCDATA)>
<!ELEMENT given (#PCDATA)>
the **XML** like:
<person id="a1">
<name>
     <family> Yoshi </family>
     <given> Samurai </given>
</name>
<age> 21 </age>
</person>
**** Could you help me to write a simple parser to parse my DTD and XML to Java object, and how can I use those objects... sorry if the problem is too basic, I am a beginner and very stuck... I am very confuse with SAXParserFactory, SAXParser, ParserAdapter and DOM has its own Factory and Parser, so confuse...
Thank you for your help, Yo

Hi, Yo,
Thank you very much for your help. And I Wish you are there...I'm. And I plan to stay - It's sunny and warm here in Honolulu and the waves are up :)
A bit more question for dear people:
In the notes, it's mainly focus on JAXB,
1. Is that mean JAXB is most popular parser for
parsing XML into Java object? With me, definitely. There are essentially 3 technologies that allow you to parse XML documents:
1) "Callbacks" (e.g. SAX in JAXP): You write a class that overrides 3 methods that will be called i) whenever the parser encounters a start tag, ii) an end tag, or iii) PCDATA. Drawback: You have to figure out where the heck in the document hierarchy you are when such a callback happens, because the same method is called on EACH start tag and similarly for the end tag and the PCDATA. You have to create the objects and put them into your own data structure - it's very tedious, but you have complete control. (Well, more or less.)
2) "Tree" (e.g. DOM in JAXP, or it's better cousin JDOM): You call a parser that in one swoop creates an entire hierarchy that corresponds to the XML document. You don't get called on each tag as with SAX, you just get the root of the resulting tree. Drawback: All the nodes in the tree have the same type! You probably want to know which tags are in the document, don't you? Well, you'll have to traverse the tree and ask each node: What tag do you represent? And what are your attributes? (You get only strings in response even though your attributes often represent numbers.) Unless you want to display the tree - that's a nice application, you can do it as a tree model for JTree -, or otherwise don't care about the individual tags, DOM is not of much help, because you have to keep track where in the tree you are while you traverse it.
3) Enter JAXB (or Castor, or ...): You give it a grammar of the XML documents you want to parse, or "unmarshall" as the fashion dictates to call it. (Actually the name isn't that bad, because "parsing" focuses on the input text while "unmarshalling" focuses on the objects you get, even though I'd reason that it should be marshalling that converts into objects and unmarshalling that converts objects to something else, and not vice versa but that's just my opinion.) The JAXB compiler creates a bunch of source files each with one (or now more) class(es) (and now interfaces) that correspond to the elements/tags of your grammar. (Now "compiler" is a true jevel of a misnomer, try to explain to students that after they run the "compiler", they still need to compile the sources the "compiler" generated with the real Java compiler!). Ok, you've got these sources compiled. Now you call one single method, unmarshall() and as a result you get the root node of the hierarchy that corresponds to the XML document. Sounds like DOM, but it's much better - the objects in the resulting tree don't have all the same type, but their type depends on the tag they represent. E.g if there is the tag <ball-game> then there will be an object of type myPackage.BallGame in your data structure. It gets better, if there is <score> inside <ball-game> and you have an object ballGame (of type BallGame) that you can simply call ballGame.getScore() and you get an object of type myPackage.Score. In other words, the child tags become properties of the parent object. Even better, the attributes become properties, too, so as far as your program is concerned there is no difference whether the property value was originally a tag or an attribute. On top of that, you can tell in your schema that the property has an int value - or another primitive type (that's like that in 1.0, in the early release you'll have to do it in the additional xjs file). So this is a very natural way to explore the data structure of the XML document. Of course there are drawbacks, but they are minor: daunting complexity and, as a consequence, very steep learning curve, documentation that leaves much to reader's phantasy - read trial and error - (the user's guide is too simplicistic and the examples too primitive, e.g. they don't even tell you how to make a schema where a tag has only attributes) and reference manual that has ~200 pages full of technicalities and you have to look with magnifying glas for the really usefull stuff, huge number of generated classes, some of which you may not need at all (and in 1.0 the number has doubled because each class has an accompanying interface), etc., etc. But overall, all that pales compared to the drastically improved efficiency of the programmer's efforts, i.e. your time. The time you'll spend learning the intricacies is well spent, you'll learn it once and then it will shorten your programming time all the time you use it. It's like C and Java, Java is order of magnitude more complex, but you'd probably never be sorry you gave up C.
Of course the above essay leaves out lots and lots of detail, but I think that it touches the most important points.
A word about JAXB 1.0 vs. Early Release (EA) version. If you have time, definitively learn 1.0, they are quite different and the main advantage is that the schema combines all the info that you had to formulate in the DTD and in the xjs file when using the EA version. I suggested EA was because you had a DTD already, but in retrospect, you better start from scratch with 1.0. The concepts in 1.0 are here to stay and once your surmounted the learning curve, you'll be glad that you don't have to switch concepts.
When parser job is done,
what kind of Java Object we will get? (String,
InputStream or ...)See above, typically it's an object whose type is defined as a class (and interface in 1.0) within the sources that JABX generates. Or it can be a String or one of the primitive types - you tell the "compiler" in the schema (xjs file in EA) what you want!
2. If we want to use JAXB, we have to contain a
XJS-file? Something like:In EA, yes. In 1.0 no - it's all in the schema.
I am very new to XML, is there any simpler way to get
around them? It has already take me 4 days to find a
simple parser which give it XML and DTD, then return
to me Java objects ... I mean if that kind of parser
exists....It'll take you probably magnitude longer that that to get really familiar with JAXB, but believe me it's worth it. You'll save countless days if not weeks once you'll start developing serious software with it. How long did it take you to learn Java and it's main APIs? You'll either invest the time learning how to use the software others have written, or you invest it writing it yourself. I'll take the former any time. But it's only my opinion...
Jan

Implementation of LISP trees in Java

I have a problem with implementation of a something similar to a LISP tree in Java. That means that I want to be able to combine different if-else-conditions from a set of variables and operators and run it. For example, if (variable) (operator) (variable) (operator2) (variable) (operator) (variable)
whereby :
variable: means a variable
operator: <, >, =, +, _,
variable: variable
operator2: &&, ||, etc
I don't know how to do in a way that a variable can be picked up from a set, operator can be picked up from a set and operator2 can also be picked up from a set.

Lisp doesn't use trees... it uses lists. In fact, Lisp stands for "List Processing".
Take a look at the java.util.LinkedList class. If you make a LinkedList of Nodes, where each Node contains an Object car and LinkedList cdr, you've got yourself a Lisp list implementation!

Java Error in RFC Lookup in XSLT Mapping usinf Java helper class

Hi All,
I am doing RFC Lookup in XSLT Mapping using Java Helper class.
The Lookup works fine when called one RFC at a time However my requirement is I want to do 2 Lookups.
Both Lookups works when done individually however when I call both lookups in one mapping I get following error "javax.xml.transform.TransformerException: DOMSource whose Node is null."
Following is the code I have written in XSLT for the lookup:
     <xsl:template name="Lookup_1">
          <xsl:param name="STDPN"/>
               <rfc:RFC_READ_TABLE>
                    <QUERY_TABLE>KNA1</QUERY_TABLE>
                    <OPTIONS><item><TEXT>
                              <xsl:value-of select="$STDPN"/>
                         </TEXT></item>
                    </OPTIONS>
                    <FIELDS>
                         <item>
                              <FIELDNAME>KUNNR</FIELDNAME>
                         </item>
                    </FIELDS>
               </rfc:RFC_READ_TABLE>
          </xsl:variable>
          <xsl:variable name="response" xmlns:lookup="java:urn.mt.pi" select="lookup:execute($request, 'BS_D, 'cc_RfcLookup', $inputparam)"/>
          <xsl:element name="STDPN">
               <xsl:value-of select="$response//DATA/item/WA"/>
          </xsl:element>
     </xsl:template>
     <xsl:template name="Lookup_2">
          <xsl:param name="BELNR"/>
               <xsl:variable name="Query">AGMNT = '<xsl:value-of select="$BELNR"/>'</xsl:variable>
               <xsl:variable name="request1">
                    <rfc:RFC_READ_TABLE>
                         <QUERY_TABLE>ZTABLE</QUERY_TABLE>
                         <OPTIONS><item><TEXT>
                              <xsl:value-of select="$Query"/>
                              </TEXT></item>
                         </OPTIONS>
                         <FIELDS>
                              <item>
                                   <FIELDNAME>KUNAG</FIELDNAME>
                              </item>
                         </FIELDS>
                    </rfc:RFC_READ_TABLE>
               </xsl:variable>
               <xsl:variable name="response1" xmlns:lookup="java:urn.mt.pi" select="lookup:execute($request1, 'BS_D','cc_RfcLookup', $inputparam)"/>
               <xsl:element name="BELNR">
                    <xsl:value-of select="$response1//DATA/item/WA"/>
               </xsl:element>
     </xsl:template>
My Question: Am I doing anything wrong? Or Is it possible to call multiple lookups in one XSLT?
Thanks and Regards,
Atul

Hi Atul,
I had the same problem like you had.
The main Problem is that with the example code the request variable is created as NodeList object. In XSLT a variable is somekind of a constant and can't be changed. As the request object is empty after the first request the programm fails at the following line:
Source source = new DOMSource(request.item(0));
So I've created a workaround for this problem.
In the call of the template I've put the request as a parameter object at the template call:
<xsl:with-param name="req">
<rfc:PLM_EXPLORE_BILL_OF_MATERIAL xmlns:rfc="urn:sap-com:document:sap:rfc:functions">
<APPLICATION>Z001</APPLICATION>
<FLAG_NEW_EXPLOSION>X</FLAG_NEW_EXPLOSION>
<MATERIALNUMBER><xsl:value-of select="value"/></MATERIALNUMBER>
<PLANT>FSD0</PLANT>
<VALIDFROM><xsl:value-of select="//Recordset/Row[name='DTM-031']/value"/></VALIDFROM>
<BOMITEM_DATA/>
</rfc:PLM_EXPLORE_BILL_OF_MATERIAL>
</xsl:with-param>
With this change the request will be provided as a String object and not as a NodeList object.
Afterwards the RfcLookup.java has to be changed to the following:
package com.franke.mappings;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Map;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import com.sap.aii.mapping.lookup.Channel;
import com.sap.aii.mapping.api.StreamTransformationConstants;
import com.sap.aii.mapping.api.AbstractTrace;
import com.sap.aii.mapping.lookup.RfcAccessor;
import com.sap.aii.mapping.lookup.LookupService;
import com.sap.aii.mapping.lookup.XmlPayload;
* @author Thorsten Nordholm Søbirk, AppliCon A/S
* Helper class for using the XI Lookup API with XSLT mappings for calling RFCs.
* The class is generic in that it can be used to call any remote-enabled
* function module in R/3. Generation of the XML request document and parsing of
* the XML response is left to the stylesheet, where this can be done in a very
* natural manner.
* TD:
* Changed the class that request is sent as String, because of IndexOutOfBound-exception
* When sending multiple requests in one XSLT mapping.
public class RfcLookup {
     * Execute RFC lookup.
     * @param request RFC request - TD: changed to String
     * @param service name of service
     * @param channelName name of communication channel
     * @param inputParam mapping parameters
     * @return Node containing RFC response
     public static Node execute( String request,
             String service,
             String channelName,
             Map inputParam)
          AbstractTrace trace = (AbstractTrace) inputParam.get(StreamTransformationConstants.MAPPING_TRACE);
          Node responseNode = null;
          try {
              // Get channel and accessor
              Channel channel = LookupService.getChannel(service, channelName);
              RfcAccessor accessor = LookupService.getRfcAccessor(channel);
               // Serialise request NodeList - TD: Not needed anymore as request is String
               /*TransformerFactory factory = TransformerFactory.newInstance();
               Transformer transformer = factory.newTransformer();
               Source source = new DOMSource(request.item(0));
               ByteArrayOutputStream baos = new ByteArrayOutputStream();
               StreamResult streamResult = new StreamResult(baos);
               transformer.transform(source, streamResult);*/
                // TD: Add xml header and remove linefeeds for the request string
                request = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"+request.replaceAll("[\r\n]+", "");
                // TD: Get byte Array from request String to send afterwards
                byte[] requestBytes = request.getBytes();
               // TD: Not used anymore as request is String
                //byte[] requestBytes = baos.toByteArray();
                trace.addDebugMessage("RFC Request: " + new String(requestBytes));
                // Create input stream representing the function module request message
                InputStream inputStream = new ByteArrayInputStream(requestBytes);
                // Create XmlPayload
                XmlPayload requestPayload =LookupService.getXmlPayload(inputStream);
                // Execute lookup
                XmlPayload responsePayload = accessor.call(requestPayload);
                InputStream responseStream = responsePayload.getContent();
                TeeInputStream tee = new TeeInputStream(responseStream);
                // Create DOM tree for response
                DocumentBuilder docBuilder =DocumentBuilderFactory.newInstance().newDocumentBuilder();
                Document document = docBuilder.parse(tee);
                trace.addDebugMessage("RFC Response: " + tee.getStringContent());
                responseNode = document.getFirstChild();
          } catch (Throwable t) {
               StringWriter sw = new StringWriter();
               t.printStackTrace(new PrintWriter(sw));
               trace.addWarning(sw.toString());
          return responseNode;
     * Helper class which collects stream input while reading.
     static class TeeInputStream extends InputStream {
           private ByteArrayOutputStream baos;
           private InputStream wrappedInputStream;
           TeeInputStream(InputStream inputStream) {
                baos = new ByteArrayOutputStream();
                wrappedInputStream = inputStream;
           * @return stream content as String
           String getStringContent() {
                return baos.toString();
          /* (non-Javadoc)
          * @see java.io.InputStream#read()
          public int read() throws IOException {
               int r = wrappedInputStream.read();
               baos.write(r);
               return r;
Then you need to compile and upload this class and it should work.
I hope that this helps you.
Best regards
Till

[svn] 1648: This checkin makes public our modifications to Velocity 1. 4 which make the parse tree serializable.

Revision: 1648
Author: [email protected]
Date: 2008-05-09 14:24:44 -0700 (Fri, 09 May 2008)
Log Message:
This checkin makes public our modifications to Velocity 1.4 which make the parse tree serializable.
Velocity has a slow parser and template lookup mechanism so we save 25% time in the MXML compiler by only using merge at runtime and loading a serialized form of the parse tree from the classpath.
There's a simple class flex.util.SerializedTemplateFactory that has a main method to serialize a template and a load method to load a template.
Another significant change is that macros and their arguments are not parsed at runtime; we parse them once at parse time and they are just evaluated at runtime. The original Velocity liked to concatenate tokens in its production rules and then re-parse at runtime.
It turns out that re-serializing the parse trees is still pretty expensive, so the next step would be to codegen a Java class that does all the velocity actions without any of the Velocity runtime necessary.
Bugs: -
QA: No
Doc: No
Reviewer: Jono
Modified Paths:
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/app/VelocityEngin e.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/Runtime.j ava
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/RuntimeCo nstants.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/RuntimeIn stance.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/RuntimeSe rvices.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/RuntimeSi ngleton.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/Velocimac roFactory.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/Velocimac roManager.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/directive /Foreach.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/directive /Include.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/directive /Macro.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/directive /VMProxyArg.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/directive /VelocimacroProxy.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/Pa rser.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/Pa rser.jj
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/Pa rser.jjt
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/To ken.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/bu ild
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/no de/ASTComment.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/no de/ASTDirective.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/no de/ASTEscape.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/no de/ASTEscapedDirective.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/no de/ASTIdentifier.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/no de/ASTMethod.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/no de/ASTNumberLiteral.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/no de/ASTReference.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/no de/ASTSetDirective.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/no de/ASTStringLiteral.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/no de/ASTText.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/no de/ASTWord.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/no de/Node.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/runtime/parser/no de/SimpleNode.java
flex/sdk/trunk/modules/thirdparty/velocity/src/java/org/apache/velocity/util/introspectio n/Info.java
Added Paths:
flex/sdk/trunk/modules/thirdparty/velocity/src/java/flex/
flex/sdk/trunk/modules/thirdparty/velocity/src/java/flex/util/
flex/sdk/trunk/modules/thirdparty/velocity/src/java/flex/util/SerializedTemplateFactory.j ava

Dave,
First of all, THANK YOU! THis is extremely timely and helpful; exactly what I've been looking for.
I'm with you all the way until the end, right here:
wrap the elements into the required delimiters.
my $returnValue = sprintf('"%s" <%s> (%s) [%s]', $displayName, $emailAddress, $username, $userIdentifier);
return ETC, ETC
Did this part lose some formatting in the post? Where are the line breaks? Is it one unbroken string?
Dual 2GHz G5 Mac OS X (10.4.6)
Dual 2GHz G5 Mac OS X (10.4.6)
Dual 2GHz G5 Mac OS X (10.4.6)

Regarding Java Help System...('',)

Hello All,
I had successfully implemented Java Help System for my chat messenger...
But the problem I am facing is.... after making a jar file of my helpsystem..I am trying to access my Helpset file from my java code....
When I click on Help topics button to display the Helpset It will give me the following error....
HelpSet: Could not parse
Got an IOException (null)
Parsing failed for null
HelpSet: Master.hs not found
Exception in thread "main" java.lang.NullPointerException
at HelpMenu.<init>(HelpMenu.java:30)
at HelpMenu.main(HelpMenu.java:63)
But I have placed that Jar file in my program....where all files are given....
Can anybody help me out here.....
Thanks in advance.....

I am using the following program to do so...
public class JavaHelpDemo extends JFrame
private HelpBroker someHelpBroker;
public JavaHelpDemo()
HelpSet hs;
try
        File f = new File("Master.hs");
        URL url = f.toURL();
        hs = new HelpSet (null, url);
        HelpBroker hb = hs.createHelpBroker();
        new CSH.DisplayHelpFromSource(hb);
        hb.setDisplayed(true);
      catch (Exception a)
        System.out.println("Error is here");
        System.out.print(a);
// constructor
public static void main(String[] args)
JavaHelpDemo javaHelpDemo1 = new JavaHelpDemo();
}//classActually my this program is running well and I m getting my helpset only when i insert all my files with htmls in my source path.....
I hav created a Jar or all these files and named it Help.jar
is there any way just to call that helpset using this jar without giving all files into source path.....
Regards,
Damz

XSLT mapping with Java helper classes

Hi,
I'm trying to implement a XSLT mapping to convert my request to a specific soap request message format for this I'm calling some methods from a java helper class. I have imported the jar file into the archives. When I tried to test the interface it keeps complaing there is some exception but doesn't give me the exact error. Has any one called any java helper classes with in XSLT mapping, if so I would appreciate if you could help me with this. Here is the code from xsl.
<wsse:Security soapenv:actor="http://schemas.xmlsoap.org/soap/actor/next" soapenv:mustUnderstand="0" xmlns:wsse="http://schemas.xmlsoap.org/ws/2002/07/secext"   xmlns:UserToken="java:com.company.test.mapping.UserTokenMap">
<wsse:UsernameToken>
    <wsse:Username xsi:type="soapenc:string" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/">
      <xsl:value-of select="UserToken:getUsername()"/>
    </wsse:Username>
    <wsse:Password wsse:Type="wsse:PasswordDigest" xsi:type="soapenc:string" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/">
    <xsl:value-of select="UserToken:getPasswordDigest()"/>
    </wsse:Password>
    <wsse:Nonce xsi:type="soapenc:string" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/">
    <xsl:value-of select="UserToken:getNonce()"/>
    </wsse:Nonce>
    <wsu:Created xsi:type="soapenc:string" xmlns:wsu="http://schemas.xmlsoap.org/ws/2002/07/utility" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/">
    <xsl:value-of select="UserToken:getCreateDate()"/>
</wsu:Created>
</wsse:UsernameToken>
</wsse:Security>
Thanks,
Joe

Hi,
I'm getting following exception when I refer to the java class with in my XSLT mapping. Any one encountered the same problem.
com.sap.engine.services.ejb.exceptions.BaseRemoteException:
Exception in method transform.
     at com.sap.aii.ibrep.sbeans.mapping.MapServiceRemoteObjectImpl0.transform(MapServiceRemoteObjectImpl0.java:218)
     at com.sap.aii.ibrep.sbeans.mapping.MapServiceRemoteObjectImpl0p4_Skel.dispatch(MapServiceRemoteObjectImpl0p4_Skel.java:104)
     at com.sap.engine.services.rmi_p4.DispatchImpl._runInternal(DispatchImpl.java:320)
     at com.sap.engine.services.rmi_p4.DispatchImpl._run(DispatchImpl.java:198)
     at com.sap.engine.services.rmi_p4.server.P4SessionProcessor.request(P4SessionProcessor.java:129)
     at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
     at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
     at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
     at java.security.AccessController.doPrivileged(Native
Method)
     at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:100)
     at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170)
Caused by: java.lang.UnsupportedClassVersionError:
com/earthlink/xi/mapping/UserTokenMap (Unsupported
major.minor version 49.0)
     at java.lang.ClassLoader.defineClass0(Native
Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:448)
     at com.sap.aii.ibrep.server.mapping.ibrun.RepMappingLoader.findClass(RepMappingLoader.java:175)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
     at com.sap.engine.lib.xsl.xpath.JLBLibrary.<init>(JLBLibrary.java:33)
     at com.sap.engine.lib.xsl.xpath.LibraryManager.getFunction(LibraryManager.java:69)
     at com.sap.engine.lib.xsl.xpath.ETFunction.evaluate(ETFunction.java:98)
     at com.sap.engine.lib.xsl.xpath.XPathProcessor.innerProcess(XPathProcessor.java:56)
     at com.sap.engine.lib.xsl.xpath.XPathProcessor.process(XPathProcessor.java:43)
     at com.sap.engine.lib.xsl.xpath.XPathProcessor.process(XPathProcessor.java:51)
     at com.sap.engine.lib.xsl.xslt.XSLValueOf.process(XSLValueOf.java:76)
     at com.sap.engine.lib.xsl.xslt.XSLNode.processFromFirst(XSLNode.java:296)
     at com.sap.engine.lib.xsl.xslt.XSLElement.process(XSLElement.java:248)
     at com.sap.engine.lib.xsl.xslt.XSLNode.processFromFirst(XSLNode.java:296)
     at com.sap.engine.lib.xsl.xslt.XSLElement.process(XSLElement.java:248)
     at com.sap.engine.lib.xsl.xslt.XSLNode.processFromFirst(XSLNode.java:296)
     at com.sap.engine.lib.xsl.xslt.XSLElement.process(XSLElement.java:248)
     at com.sap.engine.lib.xsl.xslt.XSLNode.processFromFirst(XSLNode.java:296)
     at com.sap.engine.lib.xsl.xslt.XSLElement.process(XSLElement.java:248)
     at com.sap.engine.lib.xsl.xslt.XSLNode.processFromFirst(XSLNode.java:296)
     at com.sap.engine.lib.xsl.xslt.XSLElement.process(XSLElement.java:248)
     at com.sap.engine.lib.xsl.xslt.XSLNode.processFromFirst(XSLNode.java:296)
     at com.sap.engine.lib.xsl.xslt.XSLTemplate.process(XSLTemplate.java:272)
     at com.sap.engine.lib.xsl.xslt.XSLStylesheet.process(XSLStylesheet.java:463)
     at com.sap.engine.lib.xsl.xslt.XSLStylesheet.process(XSLStylesheet.java:431)
     at com.sap.engine.lib.xsl.xslt.XSLStylesheet.process(XSLStylesheet.java:394)
     at com.sap.engine.lib.jaxp.TransformerImpl.transformWithStylesheet(TransformerImpl.java:398)
     at com.sap.engine.lib.jaxp.TransformerImpl.transform(TransformerImpl.java:240)
     at com.sap.aii.ibrep.server.mapping.ibrun.RepMappingTransformer.transform(RepMappingTransformer.java:150)
     at com.sap.aii.ibrep.server.mapping.ibrun.RepXSLTMapping.execute(RepXSLTMapping.java:81)
     at com.sap.aii.ibrep.server.mapping.ibrun.RepSequenceMapping.execute(RepSequenceMapping.java:54)
     at com.sap.aii.ibrep.server.mapping.ibrun.RepMappingHandler.run(RepMappingHandler.java:80)
     at com.sap.aii.ibrep.server.mapping.rt.MappingHandlerAdapter.run(MappingHandlerAdapter.java:107)
     at com.sap.aii.ibrep.server.mapping.ServerMapService.transformInterfaceMapping(ServerMapService.java:127)
     at com.sap.aii.ibrep.server.mapping.ServerMapService.transform(ServerMapService.java:104)
     at com.sap.aii.ibrep.sbeans.mapping.MapServiceBean.transform(MapServiceBean.java:40)
     at com.sap.aii.ibrep.sbeans.mapping.MapServiceRemoteObjectImpl0.transform(MapServiceRemoteObjectImpl0.java:167)
     ... 10 more
; nested exception is:
     java.lang.UnsupportedClassVersionError:
com/earthlink/xi/mapping/UserTokenMap (Unsupported
major.minor version 49.0)

Populate Flex Tree from Java Code (Database)

Hi
Can someone please help me? I'm very new to using flex. I'm
basically trying to create a tree that is populated from data in my
database. I am using hibernate to fetch that data.
The plan is to basically create the tree in Java code (since
I don't want any processing done on the client PC) and then pass
this to the flex tree (or an actionscript data structure that is
compatible as the tree datasource)
I am creating the java tree using DocumentImpl. Is this
correct? What class would work?
Element e = null;
Node n = null;
Document xmldoc= new DocumentImpl();
Element root = xmldoc.createElement("USERS");

quote:
Originally posted by:
ntsiii
Stop running and get a map (read the documents)
This is hardly a useful comment and must discourage new users
from asking questions. If you think the documentation relating to
the use of the tree control is straightforward then I beg to
differ.
If you are aware of a clear example of how to use the data
tree with a php backend returning a remote data object please
enlighten me. Meanwhile I continue my search but not within the
livedocs.
One site I have found that may be of use is
http://flexdiary.blogspot.com/2009/01/lazy-loading-tree-example-file-posted.html
Not everyone is an expert.

Java Help Exception in Linux

Hi all, I have a piece of code that initializes Java help on windows perfectly but the same code causes an exception in Linux. below is the exception I am getting in Linux. because of this, the applications help is not appearing in Linux. Does anybody know why this happens only in Linux / has come across this or a fix for this earlier?
Also I am working on Linux for the first time and I noticed that when i gave a couple of System.outs in the code to find out what was happening, they appeared allright in windows, but did not appear in Linux !! (then even the exception below disappeared, and that did not load help either !!)
java.lang.NullPointerException
at javax.help.HelpSet.parseInto(HelpSet.java:567)
at javax.help.HelpSet.<init>(HelpSet.java:129)
at com.mysoftware.util.MyJavaHelp.<init>(MyJavaHelp.java:52)
at com.mysoftware.util.MyJavaHelp.getInstance(MyJavaHelp.java:64)
Parsing failed for null
Got an IOException (null)
An answer to this will be highly appreciated...

At present I am not sure if I can post code. I am trying to find that out. However, can u tell me what u mean by a Windows - window? I will try to figure that out...
Thanks a lot..

Binary search tree in java using a 2-d array

Good day, i have been wrestling with this here question.
i think it does not get any harder than this. What i have done so far is shown at the bottom.
We want to use both Binary Search Tree and Single Linked lists data structures to store a text. Chaining
techniques are used to store the lines of the text in which a word appears. Each node of the binary search
tree contains four fields :
(i) Word
(ii) A pointer pointing to all the lines word appears in
(iii) A pointer pointing to the subtree(left) containing all the words that appears in the text and are
predecessors of word in lexicographic order.
(iv) A pointer pointing to the subtree(right) containing all the words that appears in the text and are
successors of word in lexicographic order.
Given the following incomplete Java classes BinSrchTreeWordNode, TreeText, you are asked to complete
three methods, InsertionBinSrchTree, CreateBinSrchTree and LinesWordInBinSrchTree. For
simplicity we assume that the text is stored in a 2D array, a row of the array represents a line of the text.
Each element in the single linked list is represented by a LineNode that contains a field Line which represents a line in which the word appears, a field next which contains the address of a LineNode representing the next line in which the word appears.
public class TreeText{
BinSrchTreeWordNode RootText = null;// pointer to the root of the tree
String TextID; // Text Identification
TreeText(String tID){TextID = tID;}
void CreateBinSrchTree (TEXT text){...}
void LinesWordInBinSrchTree(BinSrchTreeWordNode Node){...}
public static void main(String[] args)
TEXT univ = new TEXT(6,4);
univ.textcont[0][0] = "Ukzn"; univ.textcont[0][1] ="Uct";
univ.textcont[0][2] ="Wits";univ.textcont[0][3] ="Rhodes";
univ.textcont[1][0] = "stellenbosch";
univ.textcont[1][1] ="FreeState";
univ.textcont[1][2] ="Johannesburg";
univ.textcont[1][3] = "Pretoria" ;
univ.textcont[2][0] ="Zululand";univ.textcont[2][1] ="NorthWest";
univ.textcont[2][2] ="Limpopo";univ.textcont[2][3] ="Wsu";
univ.textcont[3][0] ="NorthWest";univ.textcont[3][1] ="Limpopo";
univ.textcont[3][2] ="Uct";univ.textcont[3][3] ="Ukzn";
univ.textcont[4][0] ="Mit";univ.textcont[4][1] ="Havard";
univ.textcont[4][2] ="Michigan";univ.textcont[4][3] ="Juissieu";
univ.textcont[5][0] ="Cut";univ.textcont[5][1] ="Nmmu";
univ.textcont[5][2] ="ManTech";univ.textcont[5][3] ="Oxford";
// create a binary search tree (universities)
// and insert words of text univ in it
TreeText universities = new TreeText("Universities");
universities.CreateBinSrchTree(univ);
// List words Universities trees with their lines of appearance
System.out.println();
System.out.println(universities.TextID);
System.out.println();
universities.LinesWordInBinSrchTree(universities.RootText);
public class BinSrchTreeWordNode {
BinSrchTreeWordNode LeftTree = null; // precedent words
String word;
LineNode NextLineNode = null; // next line in
// which word appears
BinSrchTreeWordNode RightTree = null; // following words
BinSrchTreeWordNode(String WordValue)
{word = WordValue;} // creates a new node
BinSrchTreeWordNode InsertionBinSrchTree
(String w, int line, BinSrchTreeWordNode bst)
public class LineNode{
int Line; // line in which the word appears
LineNode next = null;
public class TEXT{
int NBRLINES ; // number of lines
int NBRCOLS; // number of columns
String [][] textcont; // text content
TEXT(int nl, int nc){textcont = new String[nl][nc];}
The method InsertionBinSrchTree inserts a word (w) in the Binary search tree. The method Create-
BinSrchTree creates a binary search tree by repeated calls to InsertionBinSrchTree to insert elements
of text. The method LinesWordInBinSrchTree traverses the Binary search tree inorder and displays the
words with the lines in which each appears.
>>>>>>>>>>>>>>>>>>>>>>
//InsertionBinTree is of type BinSearchTreeWordNode
BinSrchTreeWordNode InsertionBinSrchTree(String w, int line,                                             BinSrchTreeWordNode bst)
//First a check must be made to make sure that we are not trying to //insert a word into an empty tree. If tree is empty we just create a //new node.
     If (bst == NULL)
               System.out.println(Tree was empty)
     For (int rows =0; rows <= 6; rows++)
               For (int cols = 0; cols <= 4; cols++)
                    Textcont[i][j] = w

What is the purpose of this thread? You are yet to ask a question... Such a waste of time...
For future reference use CODE TAGS when posting code in a thread.
But again have a think about how to convey a question to others instead of blabbering on about nothing.
i think it does not get any harder than this.What is so difficult to understand. Google an implementation of a binary tree using a single array. Then you can integrate this into the required 2-dimension array for your linked list implemented as an array in your 2-d array.
Mel

Binary Tree in Java - ******URGENT********

HI,
i want to represent a binary tree in java. is there any way of doing that.
thanx
sraphson

HI,
i want to represent a binary tree in java. is there
e any way of doing that.
thanx
sraphsonFirst, what is a binary tree? Do you know how the binary tree looks like on puesdo code? How about a representation in terms of numbers? What is a tree? What is binary? The reason I ask is, what do you know about programming?
Asking to represent a binary tree in java seems like a question who doesn't know how it looks like in the first please. Believe me, I am one of them. I am not at this level yet. If you are taking a class that is teaching binary trees and you don't know how it looks like, go back to your notes.
Sounds harsh, but it is better to hear it from a person that doesn't know either then a boss that hired you because Computer Science was what you degree said. Yet, you don't know how to program?
Telling you will not help you learn. I can show you tutorials of trees would be start on where to learn.
HOW TO USE TREES (oops this is too simple, but it is a good example)
http://java.sun.com/docs/books/tutorial/uiswing/components/tree.html
CS312 Data Structures and Analysis of Algorithms
(Here is a course about trees. Search and learn)
http://www.calstatela.edu/faculty/jmiller6/cs312-winter2003/index.htm

Binary trees in Java

Hi there
Do you have any suggestions about how to implement trees or binary trees in Java?
As far as I know there are already some libraries for that, but I don't know how to use them. Was trying to get some implementation examples but I'm still very confused.
How can I use for example:
removeChild(Tree t)
addChild(Tree t)
isLeaf()
Thanks in advance

Lulu wrote:
Hi there
I have several questions about binary trees
Let's see, I use TreeMap to create them with the following code:
TreeMap treeMap = new TreeMap<Integer, String>();
treeMap.put("first", "Fruit");
treeMap.put("second","Orange");
treeMap.put("third", "Banana");
treeMap.put("fourth", "Apple");You've defined the map to hold integer keys and strings as values, yet you're trying to add string keys and string values to it: that won't work.
If this is a map how do I define if the data should go to the left or to the right of certain node?That is all done for you. In a TreeMap (using the no-args constructor), you can only store objects that are comparable to each other (so, they must implement the Comparable interface!). So the dirty work of deciding if the entry should be stored, or traversed, into the left or right subtree of a node, is all done behind the scenes.
Also note that TreeMap is not backed up by a binary tree, or a binary search tree, but by a red-black tree. A red-black tree is a self balancing binary tree structure.
Should I have dynamical keys so that they increase automatically when adding new data?
According to a webpage I should use Comparator(), is that to find the data in the tree and retrieve the key?
ThanksI am not sure what it is you want. I am under the impression that you have to write a binary tree (or a binary search tree) for a course for school/university. Is that correct? If so, then I don't think you're permitted to use a TreeMap, but you'll have to write your own classes.

Tutorials to implement Flash Islands with Web Dynpro Java

Hi,
We have downloaded the CE 7.1 EhP1 trial version.
Any pointers to tutorials to implement Flash Islands with Web Dynpro Java would be helpful.
Thanks,
Chitrali

Hi,
I read a document which says Adobe Flex Builder is not been included part of shipment of NW. So not lots of documents available. Yet with WDA, some tutorials and blogs are available. Similar application can be developed using WDJ. Please check these.
WDJ:
The specified item was not found.
WDA:
http://www.adobe.com/devnet/sap/
https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/10989ef6-968c-2b10-50a9-eb34a5267163
https://www.sdn.sap.com/irj/scn/wiki?path=/display/emtech/sapRichIslandsforAdobe+Flash
Regards,
Harini S

What does it mean when the usecounts of Parse Tree for a view is incrementing when a select query is issued against the view?

I'm using SQL Server 2008 R2 (10.50.4033) and I'm troubleshooting an issue that a select query against a specific view is taking more than 30 seconds consistently.   The issue just starts happening this week and there is no mass changes in data.
The problem only occur if the query is issued from an IIS application but not from SSMS. One thing I noticed is that sys.dm_exec_cached_plans is returning 2 Parse Tree rows for the view - one created when the select query is issued
1st time from the IIS application and another one created when the same select query is issued 1st time from SSMS.   The usecounts of the Parse Tree row for the view (the IIS one) is increasing whenever the select query is issued.  The
usecounts of the Parse Tree row for the view (the SSMS one) does not increase when the select query is issued again.
There seems to be a correlation between the slowness of the query and the increasing of the usecounts of the Parse Tree row for the view.
I don't know why there is 2 Parse Tree rows for the view. There is also 2 Compiled Plan rows for the select query.
What does the Parse Tree row mean especially the usecounts column?

>> The issue just starts happening this week and there is no mass changes in data.
There might be a mass changes in the execution plan for several reason without mass changes in data
If you have the old version and a way to check the old execution plan, and compare to the new one, that this should be your starting point. In most cases you don't have this option and we need to monitor from scratch.
>> The problem only occur if the query is issued from an IIS application but not from SSMS.
This mean that we know exactly what is the different and you can compare both execution plan. once you do it, you will find that they are no the same. But this is very common issue and we can know that it is a result of different SETting while connecting
from different application. SSMS is an external app like any app that you develop in Visual studio but the SSMS dose not use the Dot.Net default options.
Please check this link, to find the full explanation and solutions:
http://www.sommarskog.se/query-plan-mysteries.html
Take a look at sys.dm_exec_sessions for your ASP.Net application and for your SSMS session.
If you need more specific help, then we need more information and less stories :-)
We need to see the DDL+DML+Query and both execution plans
>> What does the Parse Tree row mean
I am not sure what you mean but the parse tree represents the logical steps necessary to execute the query that has been requested. you can check this tutorial about the execution plan: https://www.simple-talk.com/sql/performance/execution-plan-basics/ or
this one: http://www.developer.com/db/understanding-a-sql-server-query-execution-plan.html
>> regarding the usecount column or any other column check this link:
https://msdn.microsoft.com/en-us/library/ms187404.aspx?f=255&MSPPError=-2147217396.
Ronen Ariely
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Implementation of a parse tree in java (HELP!!!)

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