Why use an interface?

Hey everybody,
I posted a message in another thread about why to use an abstract class. I have another question and again I am not asking how but why and when. But this time about interfaces. Why would I need to write one? Any example that is not too technical would be great!
I have read a lot about interfaces but mostly it explains how to write one and not when and why to use them.
Thanks in advance for your help!

807479 wrote:
So my question is basically how does implementing an interface help if there is no code in any of the methods?Because it says to anyone who wants to know "this class fulfills the contract for <tt>x</tt>", where <tt>x</tt> is the behaviour (methods) associated with the interface.
Furthermore, in the same way that the language allows you to use a superclass as a type, it also allows you to use interfaces as types.
I presume you're aware that an object can be passed to any method that takes its superclass; well, it can also be passed to any method that takes an interface that it implements.
<tt>String</tt>, for example, implements <tt>Comparable</tt> (a good real-world interface to get familiar with, BTW), so a <tt>String</tt> object can be passed to either of the following methods:public String append(String s)...
public int compareWith(Comparable c)...Now, how does that help you? Suppose you write a program that uses a <tt>List</tt>. A common beginner's mistake is to type everything to the nth degree, viz:ArrayList<String> myList = new ArrayList<String>();and then write methods in the same way:public void addSomeStrings(ArrayList<String> list,
String... items) {.....but, while it will work, it's quite brittle.
Suppose you decide later on that an <tt>ArrayList</tt> isn't the best way to store your Strings ... what do you do? You have to refactor every bit of code that took an <tt>ArrayList</tt> to now take a new type of List (eg, a <tt>LinkedList</tt>).
Suppose instead that you wrote your program as follows:List<String> myList = new ArrayList<String>();and then your methods (hopefully ALL of them) as:public void addSomeStrings(List<String> list,
String... items) {..... Now to change the program to use a <tt>LinkedList</tt>, the ONLY thing you have to change is:List<String> myList = new LinkedList<String>();and your program will work just fine.
This is what a lot of the posts that talk about "programming to interfaces" are on about. It's a very good technique to get familiar with.
HIH
Winston

Similar Messages

Why should I use an interface?

I'm OK with how to use an interface but it's the why that I don't fully understand.
For instance, in the following example:
http://www.java2s.com/Code/Java/Language-Basics/InterfaceUsageExample.htm
the interface method is called using tryout([actor's name]).
Couldn't you just cut out the interface completely and use [actor's name].act()?
An interface in this example just seems to add more lines of code but there must be an advantage I'm missing.
Thanks in advance to anyone who can enlighten me.

Here's the code you're referring to:
interface Act {
void act();
class Actor1 implements Act {
public void act() {
    System.out.println("To be, or not to be");
class Actor2 implements Act {
public void act() {
    System.out.println("Wherefore art thou Romeo?");
public class TryOut {
public static void main(String args[]) {
    Actor1 hamlet = new Actor1();
    Actor2 juliet = new Actor2();
    tryout(hamlet);
    tryout(juliet);
private static void tryout(Act actor) {
    actor.act();
}The example might be a bit misleading: Actor1 and Actor2 are declared as classes, but their behaviour is that of two particular characters (Hamlet and Juliette). So your question is a reasonable one.
Sometimes this sort of example is given in terms of animals. Substitute speak for act and you get:
interface Speaker {
void speak();
class Dog implements Speaker {
public void speak() {
    System.out.println("woof");
// other stuff like name, license number etc
class Cat implements Speaker {
public void act() {
    System.out.println("meeow!");
public class TryOut {
public static void main(String args[]) {
    List<Speaker> speakerList = new ArrayList<Speaker>();
    speakerList.add(new Cat());
    speakerList.add(new Dog());
    speakerList.add(new Cat());
    for(Speaker sp :speakerList) {
      tryout(sp); // or just sp.speak();
private static void tryout(Speaker sp) {
    sp.act();
}Now the instances of Cat and Dog share the behaviour as seen from the "outside" ie they both speak. But they are different types of things in as much as they implement that behaviour differently. Having a type, "Speaker", allows us to invoke this common behaviour without knowing or caring about the actual type of the particular instances.
The example of having a collection of them is one time we might want to take advantage of this. When you have a List it has to be a list of something. In this case it is a list of Speaker instances.
Edited by: pbrockway2 on Dec 17, 2008 6:43 PM
d@mn cut-n-paste

Practical Use of Interface

Can anybody please let me know the practical use of Interfaces in abap objects.
Currently i am undergoing traning in abap objects and really confused with the concept why SAP has provided with interfaces.

Hi again,
<b>for interfaces
http://help.sap.com/saphelp_47x200/helpdata/en/c3/225b6254f411d194a60000e8353423/content.htm</b>
For Materials:
1) http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCABA/BCABA.pdf -- Page no: 1291
2) http://esnips.com/doc/5c65b0dd-eddf-4512-8e32-ecd26735f0f2/prefinalppt.ppt
3) http://esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf
4) http://esnips.com/doc/0ef39d4b-586a-4637-abbb-e4f69d2d9307/SAP-CONTROLS-WORKSHOP.pdf
5) http://esnips.com/doc/92be4457-1b6e-4061-92e5-8e4b3a6e3239/Object-Oriented-ABAP.ppt
6) http://esnips.com/doc/448e8302-68b1-4046-9fef-8fa8808caee0/abap-objects-by-helen.pdf
7) http://esnips.com/doc/39fdc647-1aed-4b40-a476-4d3042b6ec28/class_builder.ppt
8) http://www.amazon.com/gp/explorer/0201750805/2/ref=pd_lpo_ase/102-9378020-8749710?ie=UTF8
OO ABAP links:
1) http://www.erpgenie.com/sap/abap/OO/index.htm
2) http://help.sap.com/saphelp_nw04/helpdata/en/ce/b518b6513611d194a50000e8353423/frameset.htm
+++++
http://www.sapgenie.com/abap/OO/index.htm
http://www.geocities.com/victorav15/sapr3/abap_ood.html
http://www.brabandt.de/html/abap_oo.html
Check this cool weblog:
/people/thomas.jung3/blog/2004/12/08/abap-persistent-classes-coding-without-sql
/people/thomas.jung3/blog/2004/12/08/abap-persistent-classes-coding-without-sql
http://help.sap.com/saphelp_nw04/helpdata/en/c3/225b6254f411d194a60000e8353423/frameset.htm
http://www.sapgenie.com/abap/OO/
http://www.sapgenie.com/abap/OO/index.htm
http://help.sap.com/saphelp_nw04/helpdata/en/c3/225b5654f411d194a60000e8353423/content.htm
http://www.esnips.com/doc/375fff1b-5a62-444d-8ec1-55508c308b17/prefinalppt.ppt
http://www.esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf
http://www.esnips.com/doc/5c65b0dd-eddf-4512-8e32-ecd26735f0f2/prefinalppt.ppt
http://www.allsaplinks.com/
http://www.sap-img.com/
http://www.sapgenie.com/
http://help.sap.com
http://www.sapgenie.com/abap/OO/
http://www.sapgenie.com/abap/OO/index.htm
http://www.sapgenie.com/abap/controls/index.htm
http://www.esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf
http://www.esnips.com/doc/0ef39d4b-586a-4637-abbb-e4f69d2d9307/SAP-CONTROLS-WORKSHOP.pdf
http://www.sapgenie.com/abap/OO/index.htm
http://help.sap.com/saphelp_erp2005/helpdata/en/ce/b518b6513611d194a50000e8353423/frameset.htm
http://www.sapgenie.com/abap/OO/
these links
http://help.sap.com/saphelp_47x200/helpdata/en/ce/b518b6513611d194a50000e8353423/content.htm
For funtion module to class
http://help.sap.com/saphelp_47x200/helpdata/en/c3/225b5954f411d194a60000e8353423/content.htm
for classes
http://help.sap.com/saphelp_47x200/helpdata/en/c3/225b5c54f411d194a60000e8353423/content.htm
for methods
http://help.sap.com/saphelp_47x200/helpdata/en/08/d27c03b81011d194f60000e8353423/content.htm
for inheritance
http://help.sap.com/saphelp_47x200/helpdata/en/dd/4049c40f4611d3b9380000e8353423/content.htm
Thanks, ABY

Dynamic Dimesion Building using SQL Interface

I am attempting to use SQL Interface in Essbase 6.5 to dynamically build the account dimension from a PeopleSoft tree. The view works fine in SQL worksheet, but the last UNION statement does not work using the SQL interface. Here is the SQL that is generated: [SELECT * FROM ps_n_pre_acc_vw WHERE 1 = 1 order by 6,4,5,3] is generated. Here is the view:SELECT B.TREE_NODE AS PARENT , A.TREE_NODE AS CHILD , (A.TREE_NODE||' : '||C.DESCR) , b.tree_node_num AS num , a.tree_node_num AS c_tree_node_num , 'A' AS ord FROM SYSADM.PSTREENODE A , SYSADM.PSTREENODE B , SYSADM.PS_TREE_NODE_TBL C WHERE A.TREE_NAME = 'PRE_CUBE' AND A.SETID = 'NW' AND A.EFFDT = ( SELECT MAX(EFFDT) FROM PSTREELEAF WHERE TREE_NAME = 'PRE_CUBE') AND A.TREE_NAME = B.TREE_NAME AND A.SETID = B.SETID AND A.EFFDT = B.EFFDT AND A.PARENT_NODE_NUM = B.TREE_NODE_NUM AND A.TREE_NODE = C.TREE_NODE AND A.SETID = C.SETID AND C.EFF_STATUS = 'A' AND C.EFFDT = ( SELECT MAX(EFFDT) FROM SYSADM.PS_TREE_NODE_TBL X WHERE C.TREE_NODE = X.TREE_NODE AND C.SETID = X.SETID) UNION SELECT B.TREE_NODE AS PARENT , (A.RANGE_FROM||' : '||DESCR) AS child , A.RANGE_FROM , b.tree_node_num AS num , a.tree_node_num AS c_tree_node_num , 'B' AS ord FROM SYSADM.PSTREELEAF A , SYSADM.PSTREENODE B , SYSADM.PS_GL_ACCOUNT_TBL C WHERE A.TREE_NAME = 'PRE_CUBE' AND A.SETID = 'NW' AND A.EFFDT = ( SELECT MAX(EFFDT) FROM PSTREELEAF WHERE TREE_NAME = 'PRE_CUBE') AND A.TREE_NAME = B.TREE_NAME AND A.EFFDT = B.EFFDT AND A.SETID = B.SETID AND A.TREE_NODE_NUM = B.TREE_NODE_NUM AND C.SETID = A.SETID AND A.RANGE_FROM = C.ACCOUNT AND C.EFFDT = ( SELECT MAX(EFFDT) FROM SYSADM.PS_GL_ACCOUNT_TBL X WHERE C.ACCOUNT = X.ACCOUNT AND c.setid = x.setid) UNION SELECT B.TREE_NODE AS PARENT , (D.ACCOUNT||' : '||DESCR) AS child , D.ACCOUNT , b.tree_node_num AS num , a.tree_node_num AS c_tree_node_num , 'B' AS ord FROM pstreeleaf a , pstreenode b , PS_GL_ACCOUNT_TBL D WHERE a.tree_name = 'PRE_CUBE' AND a.effdt = '01-JAN-2001' AND A.SETID = 'NW' AND A.RANGE_FROM <> A.RANGE_TO AND A.TREE_NAME = B.TREE_NAME AND A.SETID = B.SETID AND A.EFFDT = B.EFFDT AND A.TREE_NODE_NUM = B.TREE_NODE_NUM AND D.ACCOUNT BETWEEN A.RANGE_FROM AND A.RANGE_TO AND D.SETID = 'NW' AND D.EFFDT = ( SELECT MAX(EFFDT) FROM PS_GL_ACCOUNT_TBL X WHERE D.ACCOUNT = X.ACCOUNT AND D.SETID = X.SETID)I created a view from the last union section of the SQL and Essbase returns a zero rows found error, although when I ran the view in SQL worksheet I was able to get rows returned. Any ideas on why the view does not return the expected results in Essbase?

before your query do:
<cfsavecontent
variable="emailmessagebody"><cfinclude
template="#mancbPath#/mancb_body.cfm"></cfsavecontent>
then in your query instead of using '<cfinclude ...>'
use
'#emailmessagebody#'
Azadi Saryev
Sabai-dee.com
http://www.sabai-dee.com/

Why use *31L in the following code?

Why use *31L in the following code?
* {@inheritDoc}
public int hashCode()
return (int) ((long) getAreaCode() * 31L + getLocalNumber());
public class PhoneNumber
        implements PortableObject
    // ----- constructors ---------------------------------------------------
    * Default constructor (necessary for PortableObject implementation).
    public PhoneNumber()
    * Construct a Phone.
    * @param nAccessCode   the numbers used to access international or
    *                      non-local calls
    * @param nCountryCode the numbers used to designate a country
    * @param nAreaCode     the numbers used to indicate a geographical region
    * @param lLocalNumber the local numbers
    public PhoneNumber(short nAccessCode, short nCountryCode,
            short nAreaCode, long lLocalNumber)
        m_nAccessCode = nAccessCode;
        m_nCountryCode = nCountryCode;
        m_nAreaCode    = nAreaCode;
        m_lLocalNumber = lLocalNumber;
    // ----- accessors ------------------------------------------------------
    * Return the access code.
    * @return the access code
    public short getAccessCode()
        return m_nAccessCode;
    * Set the numbers used to access international or non-local calls.
    * @param nAccessCode the access code numbers
    public void setAccessCode(short nAccessCode)
        m_nAccessCode = nAccessCode;
    * Return the country code.
    * @return the country code
    public short getCountryCode()
        return m_nCountryCode;
    * Set the country code.
    * @param nCountryCode the country code
    public void setCountryCode(short nCountryCode)
        m_nCountryCode = nCountryCode;
    * Return the area code.
    * @return the area code
    public short getAreaCode()
        return m_nAreaCode;
    * Set the numbers used indicate a geographic area within a country.
    * @param nAreaCode the area code
    public void setAreaCode(short nAreaCode)
        m_nAreaCode = nAreaCode;
    * Return the local or subscriber number.
    * @return the local or subscriber number
    public long getLocalNumber()
        return m_lLocalNumber;
    * Set the local or subscriber number.
    * @param lLocalNumbeer the local or subscriber number
    public void setLocalNumber(long lLocalNumbeer)
        m_lLocalNumber = lLocalNumbeer;
    // ----- PortableObject interface ---------------------------------------
    * {@inheritDoc}
    public void readExternal(PofReader reader)
            throws IOException
        m_nAccessCode = reader.readShort(ACCESS_CODE);
        m_nCountryCode = reader.readShort(COUNTRY_CODE);
        m_nAreaCode    = reader.readShort(AREA_CODE);
        m_lLocalNumber = reader.readLong(LOCAL_NUMBER);
    * {@inheritDoc}
    public void writeExternal(PofWriter writer)
            throws IOException
        writer.writeShort(ACCESS_CODE, m_nAccessCode);
        writer.writeShort(COUNTRY_CODE, m_nCountryCode);
        writer.writeShort(AREA_CODE, m_nAreaCode);
        writer.writeLong(LOCAL_NUMBER, m_lLocalNumber);
    // ----- Object methods -------------------------------------------------
    * {@inheritDoc}
    public boolean equals(Object oThat)
        if (this == oThat)
            return true;
        if (oThat == null)
            return false;
        PhoneNumber that = (PhoneNumber) oThat;
        return getAccessCode() == that.getAccessCode() &&
               getCountryCode() == that.getCountryCode() &&
               getAreaCode()    == that.getAreaCode()    &&
               getLocalNumber() == that.getLocalNumber();
    * {@inheritDoc}
    public int hashCode()
        return (int) ((long) getAreaCode() * 31L + getLocalNumber());
    * {@inheritDoc}
    public String toString()
        return "+" + getAccessCode() + " " + getCountryCode() + " "
                   + getAreaCode()   + " " + getLocalNumber();
...

31 is a nice prime number that is used here to decrease hash collisions
thanks,
-Rob

Why use key-partitioning and key-associator features?

Why use key-partitioning and key-associator features?
What kind of applications are suitable for using key-associator and key-partitioning features?
Could you give me some example?
Thank you

So the typical way is to use KeyAssociation. This is a single interface that uses a method
public Object getAssociatedKey();
I believe this works on the ClusterService level (rather than say the Cache). So, say you have a Client and an Account cache where a Client can have multiple Accounts. Now both the Client and the Account object will implement KeyAssociation and return the client object as the AssociatedKey. This will cause these associated objects to live on the same partition.
Now you can do some clever tricks since you know these are on the same partition. These include using the BackingMap and EntryProcessors / InvocationService / Aggregators to return all the AccountIds associated with a client account (essentially a join).
Unfortunately, these are pretty advanced Coherence features so it is worth building them in a testcase first and getting them to work before you integrate them into your application.
Best, Andrew.
PS. You could also use the KeyPartitioningStrategy, but I prefer the KeyAssociation (as do most people).

Unusual use of interface defining static factory class with getInstance

This question is prompted by a recent New to Java forum question ask about the differences between Interfaces and Abstract classes. Of course one of the standard things mentioned is that interfaces cannot actually implement a method.
One of my past clients, one of the 500 group, uses interfaces as class factories. The interface defines a pubic static class with a public static method, getInstance, that is called to generate instances of a class that implements the interface.
This architecture was very object-oriented, made good use of polymorphism and worked very well. But I haven't seen this architecture used anywhere else and it seemed a little convoluted.
Here is a 'pseudo' version of the basic interface template and use
-- interface that defines public static factory class and getInstance method
public interface abc {
    public static class FactoryClass
        public static abc getInstance ()
            return (abc) FactoryGenerator(new abcImpl(), abc.class);
-- call of interface factory to create an instance
abc myABC = abc.Factory.getInstance();1. Each main functional area ('abc' in the above) has its own interface factory
2. Each main functional area has its own implementation class for that interface
3. There is one generator (FactoryGenerator) that uses the interface class ('abc.class') to determine which implementation class to instantiate and return. The generator class can be configured at startup to control the actual class to return for any given interface.
I should mention that the people that designed this entire architecture were not novices. They wrote some very sophisticated multi-threaded code that rarely had problems, was high performance and was easy to extend to add new functionality (interfaces and implementing classes) - pretty much plug-n-play with few, if any, side-effects that affected existing modules.
Is this a best-practices method of designing factory classes and methods? Please provide any comments about the use of an architecture like this.

Thanks for the feedback.
>
I don't see how 'the generator class can be configured at startup to control the actual class to return for any given interface' can possibly be true given this pseudo-code.
>
I can see why that isn't clear just from what is posted.
The way it was explained to me at the time is that the interface uses standard naming conventions and acts like a template to make it easy to clone for new modules: just change 'abc' to 'def' in three places and write a new 'defImpl' class that extends the interface and the new interface and class can just 'plug in' to the framework.
The new 'defImpl' class established the baseline functionality that must be supported. This line
return (abc) FactoryGenerator(new abcImpl(), abc.class);uses the initial version of the new class that was defined, 'abcImpl()', when calling the FactoryGenerator and it acted as a 'minimum version supported'. The generator class could use configuration information, if provided, to provide a newer class version that would extend this default class. Their reasoning was that this allowed the framework to use multiple versions of the class as needed when bugs got fixed or new functionality was introduced.
So the initial objects would be an interface 'abc' and a class 'abcImpl'. Then the next version (bug fixes or enhancements) would be introduced by creating a new class, perhaps 'abcImpl_version2'. A configuration parameter could be passed giving 'abcImpl' as the base class to expect in the FactoryGenerator call and the generator would actually create an instance of 'abcImpl_version2' or any other class that extended 'abcImpl'.
It certainly go the job done. You could use multiple versions of the class for different environments as you worked new functionality from DEV, TEST, QA and PRODUCTION environments without changing the basic framework.
I've never seen any Java 'pattern' that looks like that or any pattern where an interface contained a class. It seemed really convoluted to me and seems like the 'versioning' aspect of it could have been accomplished in a more straightforward manner.
Thanks for the feedback. If you wouldn't mind expanding a bit on one comment you made then I will mark this ANSWERED and put it to rest.
>
I don't mind interfaces containing classes per se when necessary
>
I have never seen this except at this one site. Would you relate any info about where you have seen or used this or when it might be necessary?

Use of interface concept

Hi everyone !!!
Can anyone explain me what are the uses to the interface and why do we need to use interface.
I know one advantage is java doesn't support multiple inheritance so we need to use interface.
By using interface what can we do ? But i dont find advantages in that
can you explain me pls ....

One of the most popular uses of interfaces comes out of the Collections frame works.
For example, java.util.List, java.util.Map, and java.util.Set.
ArrayList is an implementation of the the interface List. By abstracting ArrayList into the interface, I can now change what type of List I am working with, and my code doesn't care....
For example, I have a method that creates an ArrayList that contains all the users on the server at a particular time. As the coder, I know the method is going to create an ArrayList. Now I have a choice, I can make the method's return type an ArrayList, or I can use the interface name and return a List:
public ArrayList getCurrentUsers() {
ArrayList theList = new ArrayList();
return theList;
-or-
public List getCurrentUsers() {
List theList = new ArrayList();
return theList;
} Both codes would be functionally equivalent. Any code that calls the first method may (but does not need to) do this:
ArrayList currentUsers = getCurrentUsers();Whereas any code that runs the second method would need to do this:
List currentUsers = getCurrentUsers();What's the difference? Well, let's say you decide to change your method to use a LinkedList instead of an ArrayList. If you employed method 1, you now have to make sure you change all the code that accessed the method is changed as well. But, since LinkedList is another implementation of List, if you employ method 2, you can be sure that none of the code that uses your method will break, because they only work through an interface wich both ArrayList and LinkedList share in comon.
So Interfaces are great for defining how a class or object looks, but not necessarily how it works. If you use the List interface to look at ArrayList or LinkedList then both of these classes will look the same, they are both sure to have the same methods defined in the List interface. However, they both will act differently, based on the underlying implementation.
In general terms, it is a level of abstraction that allows the implementer be more flexible with what he is working on, by ensuring a common means of accessing the object, or a set of rules that users must use when accessing the object. In the mean time, the coder is free to make changes, switch implementations, without affecting others.

CMP Entity beans using local interfaces

Why CMP entity beans with CMR relation ship using local interfaces only?
Why we should not use remote interface to get the CMR field relationship?
Pls give me the solutions

"Local interfaces provide the foundation for container-managed relationships among entity beans and session beans. The bean uses the local interface to maintain its references to other beans. For example, an entity bean uses its local interfaces to maintain relationships to other entity beans. Using local interfaces, beans can also expose their state and use pass-by-reference to pass their state between related bean instances. "
http://java.sun.com/developer/technicalArticles/ebeans/EJB20CMP/

Why the "hme0" interface is missing?

Hallo! I'm working on a Sun Blade 150 (Solaris 8 4/01). I did a "ifconfig -a" and only see the "lo0" loppback interface and the "eri0" interface.
Why the "hme0" interface is missing?
Edited by: Wolfgang073 on Jan 17, 2010 9:11 AM

Wolfgang073 wrote:
Hallo! I'm working on a Sun Blade 150 (Solaris 8 4/01). I did a "ifconfig -a" and only see the "lo0" loppback interface and the "eri0" interface.
Why the "hme0" interface is missing?
Edited by: Wolfgang073 on Jan 17, 2010 9:11 AM... because for Solaris-ethernet-on-SPARC, the interface name is specific to the chipset that is used for the function.
Your SB150 uses an "ethernet RIO interface" (ERI) on a discrete chipset and does not use hardware for what has often been named "highspeed-media-ethernet" (HME).
The hardware is different, thus the acronym is different.
Others may choose to offer a better description.

Editing the Customer Address using Open Interface

Hi All,
The requirement is to edit the address details(postal codes) of the customer using Open Interface and not the APIs.
They are insisting on using open interface as the Vertex validation(Taxation rules) is taken care only by Open Interface.
Will need help on this.Kindly advice.

Please refer the following whitepaper
https://metalink2.oracle.com/cgi-bin/cr/getfile.cgi?p_attid=67196.1:1
Thanks,
Anil

Populating the Addressee field using Customer Interface program

Hello All,
Can any body tell me how to populate the "Addressee" column in the HZ_Party_Sites table using Customer Interface Program. Which field should be populated in RA_Customers_Interface_All table inorder to populate the "Addressee" field.
Thank you,
Vijay

You can post this thread in this
Customers as well.
Thanks
GM

Can i use one interface to load data into 2 different tables

Hi Folks,
Can i use one interface to load data into 2 different tables(same schema or different schemas) from one source table with same structure ?
Please give me advice
Thanks
Raj
Edited by: user11410176 on Oct 21, 2009 9:55 AM

Hi Lucky,
Thanks for your reply,
What iam trying is ...Iam trying to load the data from legacy tables(3) into oracle staging tables.But i need to load the same source data into two staging tables(these staging tables are in two different schemas)
can i load this source data into two staging tables by using single standard interface(some business logic is there)
If i can then give me some suggestion how to do that
Thanks in advance
Raj

How to use multiple Interfaces for the same BS?

Hi @ ,
Is it possible to have a scenarion where i am using multiple interfaces in the same BS based upon some conditional field in the message.
I amnot able to get the solution I know with condition editor I can have multiple receivers but in my scenarion based upon message fiels i have to decide which BAPI to be used and wht mapping and then post it to the same System
Any help will be highly rewarded
Regards

Hi-
Yes it is possible you can use multimapping for mapping the interfaces.
To know more about multimapping see
http://help.sap.com/saphelp_nw04/helpdata/en/21/6faf35c2d74295a3cb97f6f3ccf43c/content.htm
Some more helpful links
/people/jin.shin/blog/2006/02/07/multi-mapping-without-bpm--yes-it146s-possible

Is there a way to run an existing PS-JS script using external interface

I have several previously written Photoshop JS scripts which I'd like to run through buttons on PS panels, much like the example for the HelloWorld introduction. I assume that--using external interface--I'll somehow be able to fire off these script files. Is this a correct assumption?
Thanks!

Certainly, but not with external interface.
Have a look at the cookbooks. There are examples of how to use the root host object to call directly into extendscript.

Why use an interface?

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