Multiple return of Search in Java

Hello!
For example i have an array list and I want to retrieve the values but my key is not the definite string for the key.
To illustrate:
ArrayList al = new ArrayList();
al.add("apple"); //0
al.add("orange"); //1
al.add("applepie"); //2
al.add("pineapple"); //3
al.add("grape"); //4
String key = "apple";
How will i be able to get all the values that matches like "apple".
I want to get the values 0, 2, 3.
Similar to the LIKE in sql statement "LIKE %apple%"
Thanks in advance!

Thanks for ur reply!
Although ur suggestion will output what i want... Isn't that too resource intensive if i have an arraylist with 1000 elements? Isn't there a way to get all the result with only 1 pass?
And which is faster? using indexOf or regex for search?
Thanks again!

Similar Messages

Multiple return values (Bug-ID 4222792)

I had exactly the same request for the same 3 reasons: strong type safety and code correctness verification at compile-time, code readability and ease of mantenance, performance.
Here is what Sun replied to me:
Autoboxing and varargs are provided as part of
JSRs 14 and 201
http://jcp.org/en/jsr/detail?id=14
http://jcp.org/en/jsr/detail?id=201
See also:
http://forum.java.sun.com/forum.jsp?forum=316
http://developer.java.sun.com/developer/earlyAccess/adding_generics/index.html
Multiple return values is covered by Bug-ID 4222792
Typically this is done by returning an array.
http://developer.java.sun.com/developer/bugParade/bugs/4222792.html
That's exactly the problem: we dynamically create instances of array objects that would better fit well within the operand stack without stressing the garbage collector with temporary Array object instances (and with their backing store: 2 separate allocations that need to be recycled when it is clearly a pollution that the operand stack would clean up more efficiently)
If you would like to engage in a discussion with the Java Language developers, the Generics forum would be a better place:
http://forum.java.sun.com/forum.jsp?forum=316
I know that (my report was already refering to the JSR for language extension) Generics is not what I was refering to (even if a generic could handle multiple return values, it would still be an allocated Object
instance to pack them, i.e. just less convenient than using a static class for type safety.
The most common case of multiple return values involve values that have known static datatypes and that should be checked with strong typesafety.
The simple case that involves returning two ints then will require at least two object instances and will not solve the garbage collection overhead.
Using a array of variable objects is exactly similar, except that it requires two instances for the components and one instance for the generic array container. Using extra method parameters with Integer, Byte, ... boxing objects is more efficient, but for now the only practical solution (which causes the least pollution in the VM allocator and garbage collector) is to use a custom class to store the return values in a single instance.
This is not natural, and needlessly complexifies many interfaces.
So to avoid this pollution, some solutions are used such as packing two ints into a long and returning a long, depacking the long after return (not quite clean but still much faster at run-time for methods that need to be used with high frequencies within the application. In some case, the only way to cut down the overhead is to inline methods within the caller code, and this does not help code maintenance by splitting the implementation into small methods (something that C++ can do very easily, both because it supports native types parameters by reference, and because it also supports inline methods).
Finally, suppose we don't want to use tricky code, difficult to maintain, then we'll have to use boxing Object types to allow passing arguments by reference. Shamely boxed native types cannot be allocated on the operand stack as local variables, so we need to instanciate these local variables before call, and we loose the capacity to track the cases where these local variables are not really initialized by an effective call to the method that will assign them. This does not help debugging, and is against the concept of a strongly typed language like Java should be:
Java makes lots of efforts to track uninitialized variables, but has no way to determine if an already instanciated Object instance refered in a local variable has effectively received an effective assignment because only the instanciation is kept. A typical code will then need to be written like this:
Integer a = null;
Integer b = null;
if (some condition) {
//call.method(a, b, 0, 1, "dummy input arg");
// the method is supposed to have assigned a value to a and b,
// but can't if a and b have not been instanciated, so we perform:
call.method(a = new Integer(), b = new Integer(), 0, 1, "dummy input
arg");
// we must suppose that the method has modified (not initialized!)
the value
// of a and b instances.
now.use(a.value(), b.value())
// are we sure here that a and b have received a value????
// the code may be detected at run-time (a null exception)
// or completely undetected (the method() above was called but it
// forgot to assign a value to its referenced objects a and b, in which
// case we are calling in fact: now.use(0, 0); with the default values
// or a and b, assigned when they were instanciated)
Very tricky... Hard to debug. It would be much simpler if we just used:
int a;
int b;
if (some condition) {
(a, b) = call.method(0, 1, "dummy input arg");
now.use(a, b);
The compiler would immediately detect the case where a and b are in fact not always initialized (possible use bere initialization), and the first invoked call.method() would not have to check if its arguments are not null, it would not compile if it forgets to return two values in some code path...
There's no need to provide extra boxing objects in the source as well as at run-time, and there's no stress added to the VM allocator or garbage collector simply because return values are only allocated on the perand stack by the caller, directly instanciated within the callee which MUST (checked at compile-time) create such instances by using the return statement to instanciate them, and the caller now just needs to use directly the variables which were referenced before call (here a and b). Clean and mean. And it allows strong typechecking as well (so this is a real help for programmers.
Note that the signature of the method() above is:
class call {
(int, int) method(int, int, String) { ... }
id est:
class "call", member name "method", member type "(IILjava.lang.string;)II"
This last signature means that the method can only be called by returning the value into a pair of variables of type int, or using the return value as a pair of actual arguments for another method call such as:
call.method(call.method("dummy input arg"), "other dummy input arg")
This is strongly typed and convenient to write and debug and very efficient at run-time...

Can anyone give me some real-world examples where
multiple return values aren't better captured in a
class that logically groups those values? I can of
course give hundreds of examples for why it's better
to capture method arguments as multiple values instead
of as one "logical object", but whenever I've hankered
for multiple return values, I end up rethinking my
strategy and rewriting my code to be better Object
Oriented.I'd personally say you're usually right. There's almost always a O-O way of avoiding the situation.
Sometimes though, you really do just want to return "two ints" from a function. There's no logical object you can think of to put them in. So you end up polluting the namespace:
public class MyUsefulClass {
public TwoInts calculateSomething(int a, int b, int c) {
public static class TwoInts {
    //now, do I use two public int fields here, making it
    //in essence a struct?
   //or do I make my two ints private & final, which
   //requires a constructor & two getters?
//and while I'm at it, is it worth implementing
//equals(), how about hashCode()? clone()?
//readResolve() ?
}The answer to most of the questions for something as simple as "TwoInts" is usually "no: its not worth implementing those methods", but I still have to think about them.
More to the point, the TwoInts class looks so ugly polluting the top level namespace like that, MyUsefulClass.TwoInts is public, that I don't think I've ever actually created that class. I always find some way to avoid it, even if the workaround is just as ugly.
For myself, I'd like to see some simple pass-by-value "Tuple" type. My fear is it'd be abused as a way for lazy programmers to avoid creating objects when they should have a logical type for readability & maintainability.
Anyone who has maintained code where someone has passed in all their arguments as (mutable!) Maps, Collections and/or Arrays and "returned" values by mutating those structures knows what a nightmare it can be. Which I suppose is an argument that cuts both ways: on the one hand you can say: "why add Tuples which would be another easy thing to abuse", on the other: "why not add Tuples, given Arrays and the Collections framework already allow bad programmers to produce unmainable mush. One more feature isn't going to make a difference either way".
Ho hum.

How to reference multiple instances of the same Java object from PL/SQL?

Dear all,
I'm experimenting with calling Java from PL/SQL.
My simple attempts work, which is calling public static [java] methods through PL/SQL wrappers from SQL (and PL/SQL). (See my example code below).
However it is the limitation of the public static methods that puzzels me.
I would like to do the following:
- from PL/SQL (in essence it needs to become a forms app) create one or more objects in the java realm
- from PL/SQL alter properties of a java object
- from PL/SQL call methods on a java object
However I fail to see how I can create multiple instances of an object and reference one particular object in the java realm through public static methods.
My current solution is the singleton pattern: of said java object I have only 1 copy, so I do not need to know a reference to it.
I can just assume that there will only ever be 1 of said object.
But I should be able to make more then 1 instance of an object.
To make it more specific:
- suppose I have the object car in the java realm
- from PL/SQL I want to create a car in the java realm
- from PL/SQL I need to give it license plates
- I need to start the engine of a scpecific car
However if I want more then 1 car then I need to be able to refrence them. How is this done?
Somehow I need to be able to execute the following in PL/SQL:
DECLARE
vMyCar_Porsche CAR;
vMyCar_Fiat CAR;
BEGIN
vMyCar_Porsche = new CAR();
vMyCar_Fiat = new CAR();
vMyCar_Porsche.setLicensePlates('FAST');
vMyCar_Porsche.startEngine();
vMyCar_Fiat.killEngine();
END;
Thanks in advance.
Best Regards,
Ruben
My current example code is the following:
JAVA:
===
CREATE OR REPLACE AND RESOLVE JAVA SOURCE NAMED CODAROUL."RMG/BO/RMG_OBJECT" as package RMG.BO;
public class RMG_OBJECT {
private static RMG_OBJECT instance = new RMGOBJECT();
private String rmgObjectNaam;
private RMG_OBJECT(){
this.rmgObjectNaam = "NonDetermined";
public static String GET_RMGOBJECT_NAAM () {
String toestand = null;
if (_instance == null) {toestand = "DOES NOT EXIST";} else { toestand = "EXISTS";};
System.out.println("instance : " + toestand);
System.out.println("object name is : " + _instance.rmgObjectNaam);
return _instance.rmgObjectNaam;
public static Integer SET_RMGOBJECT_NAAM (String IN)
try
_instance.rmgObjectNaam = IN;
return 1;
catch (Exception e)//catch
System.out.println("Other Exception: " + e.toString());
e.printStackTrace();
return 5;
} //catch
PL/SQL Wrapper:
==========
CREATE OR REPLACE FUNCTION CODAROUL.SET_RMGOBJECT_NAAM(NAAM IN VARCHAR2) return NUMBER AS
LANGUAGE JAVA NAME 'RMG.BO.RMG_OBJECT.SET_RMGOBJECT_NAAM (java.lang.String) return java.lang.Integer';
Calling from SQL:
==========
CALL dbms_java.set_output(2000);
select CODAROUL.GET_RMGOBJECT_NAAM() from dual;
Edited by: RubenS_BE on Apr 6, 2012 5:35 AM
Edited by: 925945 on Apr 6, 2012 5:41 AM

You can do this by manually creating a new iterator binding in your binding tab.
So instead of dragging the VO directly to the page, go to the binding tab, add a new executable iterator binding, and point to that one from your ELs in the page itself.

Multiple Return Types

haven't been around in a while, so I thought I'd stir up some comments with a suggestion for a new feature in Java, which I'm sure has been suggested at some point, but I can't remember seeing it talked about, so here goes:
Multiple Return Types:
public String, int getStateInfo(String abbrev) {
   if("nj".equalsIgnoreCase(abbrev)) {
      return "New Jersey", 11408042;
   // ... and other states...
   return null, -1;
String name, int population = getStateInfo("nj");
System.out.println("The population of " + name + " is " + population + ".");Yes yes, I know. Create a StateInfo object with the fields needed. Still, I think that could be interesting.

apart from it getting ugly with more than twoparameters
What? How is this ugly? ;-)
public String, int, String, Color, String, String
getStateInfo(String abbrev) {
return name, population, stateFlower, stateColor,
or, stateAnimal, governorsName;
there no indication on what the return valuesrepresent.
Well, I guees the API docs would have to speak for
themselves. Or better method naming... In that
sense, it's no different then now. I could write a
method "getStateName()" and return totally different.
public String, int getStateNameAndPopulation(String
abbrev) {...
I used to like "tuples" when I studied The Tom Programming Language (that's how he calls them), as every CS student is a bit of a "featurist"... Now that I came to develop 40 hours a week and to love Java's simple and powerful expressiveness, I tend to find such constructs overly ugly to be avoided as possible... a matter of personal taste, too, I suppose...

Flex services with multiple return types

Hello,
We are creating a webapplication with flex and php.
Everything is working very good, until we got to the library part of the application.
Every service so far had only 1 return type (eg: User, Group, ...)
Now for the library we want to return a ArrayCollection of different types of objects. To be more specific the LibraryService should return a ArrayCollection containing Folder and File objects.
But how to configure this in Flex (Flash Builder 4 (standard))?
So far it converts every object to the type Object, i would really like it to be Folder or File
The only solution we can think of right now is to create a new object Library that will contain 2 ArrayCollections, one of type Folder and one of type File. This could work ofcourse, but I wonder if there is a better solution for this OR that i can configure multiple return types for a service.
Any ideas/advice is greatly appreciated.

Normally if you are using Blazeds(Java stuff, i'm sure there should be something similar for php), you can map java objects to that of the AS objects, when you get the data back you are actually seeing the object which is a Folder or a File object rather than just a Object.

How to do exact word search using Java API

Hi,
Can someone tell me how can I write a search query using Ultra Search Java API to return data containing a full word that is sent as a search
parameter. e.g. If I want to search for a word 'Dictionary' I need to get all the results conatining full word Dictionary for example if I
have following 4 records
1. Dictionary
2. English Dictionary
3. French Dictionary
4. AllDictionary
How can I write a query that returns me first 3 records only as they contain the word 'Dictionary' and not the fourth record as it's not a word.
Here is what I need to get back and ordered in that way as the 'Dictionary' needs to be first record because the search is on Dictionary.
1. Dictionary
2. English Dictionary
3. French Dictionary
Any help is appreciated.
Thanks

Looks like we can not do an exact word search using Java API.

Exception in Holder for Multiple Return Types

Hi,
I am implementing multiple return types as mentioned at url: -
http://e-docs.bea.com/wls/docs70/webserv/implement.html#1058020
I have a "Ticket" object and its holder "TicketHolder".
I have built the service successfully which has the following method with its
built files: -
public String serviceMethod(String arg,TicketHolder out) {
Ticket tc = new Ticket();
tc.setticketId("001");
out = new TicketHolder();
out.value = tc;
System.out.println("got it man");
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But when i try to invoke this method from its "http://localhost:8088/WebServices/RegisterTickets"
link (note - RegisterTickets is the service name here), it gives me the following
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javax.xml.rpc.JAXRPCException: Failed to invoke the target:test.MyService@630693
operation name:serviceMethod method:public java.lang.String test.MyService.serviceMethod(java.lang.String,test.TicketHolder)
args:[Ljava.lang.Object;@3d51e3arg.length:2 Due to exception:java.lang.IllegalArgumentException:
argument type mismatch
                           at weblogic.webservice.component.javaclass.JavaClassInvocationHandler.invoke(JavaClassInvocationHandler.java:97)
                                               at weblogic.webservice.core.handler.InvokeHandler.handleRequest(InvokeHandler.java:78)
                                                                         at weblogic.webservice.core.HandlerChain.handleRequest(HandlerChain.java:131)
    at weblogic.webservice.core.DefaultOperation.process(DefaultOperation.java:539)
at weblogic.webservice.core.DefaultWebService.invoke(DefaultWebService.java:264)
Can someone help me in resolving this exception?
Any help would be appreciated...
thanks in advance,
Rajesh


apart from it getting ugly with more than twoparameters
What? How is this ugly? ;-)
public String, int, String, Color, String, String
getStateInfo(String abbrev) {
return name, population, stateFlower, stateColor,
or, stateAnimal, governorsName;
there no indication on what the return valuesrepresent.
Well, I guees the API docs would have to speak for
themselves. Or better method naming... In that
sense, it's no different then now. I could write a
method "getStateName()" and return totally different.
public String, int getStateNameAndPopulation(String
abbrev) {...
I used to like "tuples" when I studied The Tom Programming Language (that's how he calls them), as every CS student is a bit of a "featurist"... Now that I came to develop 40 hours a week and to love Java's simple and powerful expressiveness, I tend to find such constructs overly ugly to be avoided as possible... a matter of personal taste, too, I suppose...

Report Script returns no data and "java.io.FileNotFoundException" error

When attempting to write to a new file (Eg: C:\TEST.txt), Report Script returns no data and "java.io.FileNotFoundException" error occurs.
This error occurs only in Essbase 9.3.1.3 release, however it works fine in release 9.3.1.0.
After running the report the script, it pops up the follwing message:
"java.io.FileNotFoundException: ..\temp\eas17109.tmp (The system cannot find the file specified): C:\TEST.txt"
When checked the TEST.txt, it was empty.

Sorry folks, I just found out the reason. Its because there was no data in the combination what I was extracting.
but is this the right error message for that? It should have atleast create a blank file right?

IE opening multiple windows when searching google only.

We have a problem where IE opens multiple windows when searching in Google. As a result of this we are receiving Google sorry page informing us that Google is receiving automated search requests from our public IP. Is there any quick fix to this problem
apart from restoring and reset setting in IE.
Is anybody else facing this issue.?
REgards
Nahas

Hi Nahas,
Thank you for your update.
Based on the current situation, you may remove any Google domains in your trusted sites for a test.
Tools>Internet Options>Security tab, click "Reset all zones to default"
Trusted sites icon, 'Sites' button. Remove any Google domains in your trusted sites list.
For more information, you may refer to:
Understanding Zone Elevation
http://blogs.msdn.com/b/ieinternals/archive/2012/09/24/zone-elevation-security-warning-websites-in-less-privileged-zone-can-navigate-csrf-xss-protection.aspx
Also, you may try to contact Google to confirm this.
http://support.google.com/?hl=en
If you wants to report a bug to Microsoft. I would like to share the link below with you.
https://connect.microsoft.com/
Thanks for your understanding.
Regards,
Blair Deng
Blair Deng
TechNet Community Support
Spot on Blair. Thanks for the fix!
Worked for me:
Tools>Internet Options>Security tab, click "Reset all zones to default"

Issue with displaying international characters returned by Search And Promote.

Hi,
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Thanks Sham! Found the fix. I am checking for invalid characters in the byte stream and then applying corresponding encoding.
This method checks for invalid characters.
public static boolean isValidUTF8( byte[] input ) {
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Unmarshalling return; nested exception is: java.lang.ClassNotFoundException

I think what I'm trying to achieve is probably very simple (or at least should be) but I've been trying for at least 5 hrs now:
I'm using RMI for a distributed app I'm building for my degree.
Up until today I got around the need for using a SecurityManager by including all shared classes (those I pass between client and server) in a class library .jar file referenced by both client and server projects.
This has worked fine, but now I've coded a method that returns an object of a class that I do NOT want to include in the shared library (because I don't want the client to be able to construct these objects); therefore, I've decided to try and get the dynamic class loading working.
I'm using netbeans and testing on a single computer.
Here's what I'm trying:
My main() method has the standard code I've seen: if (System.getSecurityManager() == null) System.setSecurityManager(new RMISecurityManager());
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I've copied the ellusive class's .java file into C:\ to keep the URL simple, but I've also tried directing it to the netbean project's bin\ folder using '%20' for spaces, both with the same results - about a five second pause (so it's finding something I think) and then the error message from the client's output:
error unmarshalling return; nested exception is: java.lang.ClassNotFoundException: mypackage.myClass
My policy file's contents are:
grant {
permission java.security.AllPermission;
I've tried about 20 different ways of formatting the codebase argument's URL.. can anyone help?
David
p.s. my OS is Windows 7

Thanks EJP,
Yes, after posting I guessed it might want the .class file instead, so I directed it their instead - still no joy, unfortunately!
I'm carrying out all testing on one computer, so (+if+ I could get it to work) a local codebase address would not be a problem.
Noted about the server-side security manager. I might want to use callbacks, but the server still won't need to download class files from the client, so I'll still try and set the codebase, but will try without loading a security manager on the server-side.
For the time being I've put the class in the shared library but have defined it within the same package as the server code. By doing this I've been able to set the class's accessibility back to default, but the client can still access it as Object (from the shared library).
This solution is good enough, but I still wonder why the client refuses to accept the class file from the C:\ codebase.

How to search using java? SearchControl or SearchResult ?

Can anyone help me how to do search in Java? The application i develop is having search field for user.

what do you mean? is it an application with a database? is the user data in the database? then just perform a SQL query like
select * from user_table where name like 'john%'

Search help multiple selection of search results

Hi,
I have a search help (SE11) and it is correctly integrated in my WDP4A application using 'automatic' search help integration. Unfortunately multiple selection of search results does not seem to be supported (the ok button greys out when >1 result is selected). Is there a standard way to link a search help to an attribute in a 0..n value node, so that at runtime a new context element is created for each selected search result? Or do I have to recreate the search help from scratch to get this behaviour (OVS)?
If the latter is true, then why is it even possible to select multiple search results?
Kind regards,
Jeroen

Hallo Jeroen,
OVS standard configuration does not allow you to select more than one configuration, You need to specify that explicitely on Phase-0 of OVS using the set_configuration method.
see
[Multiple Selection in F4 help|Multiple Selection in F4 help]
[http://wiki.sdn.sap.com/wiki/display/WDABAP/InputhelpofObjectValueSelectioninWDABAP|http://wiki.sdn.sap.com/wiki/display/WDABAP/InputhelpofObjectValueSelectioninWDABAP]
[http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/70cee684-ccbb-2c10-3c94-91e806e5f7ac?quicklink=index&overridelayout=true|http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/70cee684-ccbb-2c10-3c94-91e806e5f7ac?quicklink=index&overridelayout=true]

Why multiple inheritence is avoided in java.

why multiple inheritence is avoided in java.
r there any advantages in this???
can u briefly explain with programming so that it will be clear.

Here is one of several discussions of this topic to be found on the web:
http://csis.pace.edu/~bergin/patterns/multipleinheritance.html

Advice on Multiple Returns and Unanchored Frames

Hello everyone--
I'm hoping to get some guidance on how to approach a problem I'm facing. I have been tasked with updating a series of documents totalling around 5,000 pages to incorporate our new corporate fonts and colors. The new fonts are slightly larger than the fonts used in those documents. Upon review of the documents, my heart fell as I saw how the indd files were initially built.
Here are the lovely challenges:
The original designers didn't anchor a single image in any of the documents.
They rarely used text wrap; instead they would use carriage returns and baseline shifts to create the spacing they wanted.
Some of the documents have threaded stories that run 60-70 frames long.
I was hoping to update the paragraph styles and adjust the layouts as needed based on text flow. (These are training manuals). Nonetheless, as you can imagine, this causes the document to get messy really quick, as text flows to other pages while the associated graphics stay in their original location.
Due to the number of documents I need to update, some sort of automated solution would be great. Ideally, I would be able to anchor graphics to the text and remove the extraneous returns so that when the paragraph styles are updated, I can at least maintain the integrity of the content as i work through the other aspects of the layout that I need to update.
Some ideas:
Is there maybe a way to see if there is a graphic in the same general location as the multiple returns? Maybe using the some calculation of the offset properties on the first and last return, and then comparing it with the bounds of any graphics on the page?
I'm also thinking of splitting the stories and updating each page's styles separately, but the document contains a lot of numbered lists. Splitting the stories would mean I'd need to figure out how to keep all of those lists in the right numbering scheme.
I'm not asking for anyone to script this for me. (first of all these may be dumb ideas). Rather, I would love advice on how to go about scripting something like this (or if it is even possible). If faced with these challenges, how would you approach them?
Thank you in advance for your time and effort!

as per my view u have to create tree diffrent tables, because if tree diff. table then multi join can be done

Multiple return of Search in Java

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