When is necessary to use import statements to import classes?
Hi,
I'm sure that it must be necessary to use import statements
in some situations, I'm finding that my code often works fine
without them. For example, some instructions will say it is
necessary to use import.flash.events.MouseEvent; before
MouseEvent.CLICK will work, or that I must import the loader class
before loading an SWF, but I'm finding that I can skip timporting
and it works fine. Could anyone please explain why this it, and
give me some idea of how to knew when to import and when I don't
have to?
Thank you in advance!
Importing is only necessary when you create you own classes
or are using a class that Flash doesn't auto import such as the
fscommand package. Any time you create your own custom
package/class, it is also necessary to use import statements unless
you add the folder containing your custom packages to the default
class path.
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Im getting a ClassNotFoundException on the line with the >>
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private void loadTest(){
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Can you use if statements for css classes?
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Parse error: syntax error, unexpected end of file in C:\xampp\htdocs\mining\systems.php on line 101
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Thanks!Nevermind, I figured out how to do it. Here is the correct code. I presume this is the best way. Hopefully.
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<?php do { ?>
<tr>
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Binding a subtree using custom State- and ObjectFactory
Hi,
first of all a very short example to illustrate my idea. I know that it would be complete rubbish to store the kind of data in the example in multiple classes and ldap entries. Currently I'm working with much larger objects that must be written according to special schema definitions. This example is really only for illustration!
LDAP-Schema:
objectclass ( 1.3.6.1.4.1... NAME 'myperson'
SUP top STRUCTURAL
MUST ( cn $ sn ) MAY ( email ) )
objectclass ( 1.3.6.1.4.1... NAME 'myphoto'
SUP top STRUCTURAL
MUST ( cn $ jpegPhoto ) )
Java-Classes:
class MyPhoto {
byte[] photo;
class MyPerson {
String cn;
String sn;
String email;
MyPhoto photo; // This is the really relevant line :)
}Now to the question:
Is it possible to bind multiple java objects with one call to bind and to get a subtree by using custom State- and ObjectFactory-Classes?
Structure of the LDAP-Database
dn: cn=John Doe
{ cn=John Doe
sn=Doe
[email protected] }
dn: cn=TheLogo, cn=John Doe // Child of cn=John Doe
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// its only use is for building the dn
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Of course this doesn't work because the entry for cn="John Doe" doesn't exist at this time. Now I don't know what to do. A possible solution would be to create everything by hand, but then I wouldn't have to use custom StateFactories at all. But if there is a simple solution to my problem I would like to use my own StateFactory instead of having to implement a persistance manager on my own.
I hope you understand what I want to do and why it doesn't work out. If you don't please ask and I will try to clarify.Hello,
A provisional solution is to use an external controller. For this approach to work, each class has to provide the list of objects being part of its properties. I have prepared two interfaces for this purpose:
public interface HasSubordinates {
Enumeration getSubordinates();
boolean hasSubordinates();
public interface Storable extends HasSubordinates {
String getIdentifier();
Then, you can use the controller to recursively get the object "tree" and store it in the directory (either using objects that implement the DirContext interface or using StateFactories - the last one is the one I have used)
The code for the Controller is the following:
import javax.naming.*;
import javax.naming.directory.*;
import javax.naming.spi.*;
import java.util.*;
import java.io.IOException;
public class DatabaseAccessController {
// Constants
final static String ldapServerName = "localhost";
final static String rootdn = "cn=juanluis, o=niaf";
final static String rootpass = "secret";
final static String rootContext = "o=niaf";
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static {
env.put( Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory" );
env.put( Context.STATE_FACTORIES, "database.PersonStateFactory:database.AddressStateFactory");
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env.put( Context.SECURITY_PRINCIPAL, rootdn );
env.put( Context.SECURITY_CREDENTIALS, rootpass );
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try {
initialContext = new InitialDirContext( env );
} catch( Exception e ) {
e.printStackTrace();
public void store( Storable object ) {
try {
store( object, initialContext );
} catch( NamingException ne ) {
ne.printStackTrace();
private void store( Storable object, DirContext ctx ) throws NamingException{
DirStateFactory.Result result = DirectoryManager.getStateToBind( object, null, null, env, null );
Attributes attributes = result.getAttributes();
DirContext new_ctx = ctx.createSubcontext( dn(object), attributes );
if( object.hasSubordinates() ) {
Enumeration subordinates = object.getSubordinates();
while( subordinates.hasMoreElements() ) {
try {
store( (Storable)subordinates.nextElement(), new_ctx );
} catch( Exception e ) {
e.printStackTrace();
private String dn( Storable object ) {
return "cn="+object.getIdentifier();
This is an example of how it should work on two objects:
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String name;
String surname;
Address address;
public Person(String n, String sn, Address addr) {
name = n;
surname = sn;
address = addr;
public boolean hasSubordinates() {
return true;
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h.put("address", address );
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String street;
int number;
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public Address( String s, int n) {
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number = n;
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return false;
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return street + number;
And here it is the program that access to the directory:
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public TestLDAP() {
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try {
System.out.println("Creating controller...");
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Hello all,
i have a scenario where i need to use the attribute 'm_appl_events' which is protected attribute. in need to add this event type into my events and add this to registered events.
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Getting below error message when importing data using IMPORT and EXPORT WIZARD
Error 0xc0202009: Data Flow Task 1: SSIS Error Code DTS_E_OLEDBERROR. An OLE DB error has occurred. Error code: 0x80004005.
<dir>
<dir>
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Error 0xc0202009: Data Flow Task 1: SSIS Error Code DTS_E_OLEDBERROR. An OLE DB error has occurred. Error code: 0x80004005.
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Error 0xc0209029: Data Flow Task 1: SSIS Error Code DTS_E_INDUCEDTRANSFORMFAILUREONERROR. The "Destination - Buyer_.Inputs[Destination Input]" failed because error code 0xC020907B occurred, and the error row disposition on "Destination
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(SQL Server Import and Export Wizard)
Error 0xc0047022: Data Flow Task 1: SSIS Error Code DTS_E_PROCESSINPUTFAILED. The ProcessInput method on component "Destination - Buyer" (28) failed with error code 0xC0209029 while processing input "Destination Input" (41). The
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Error 0xc02020c4: Data Flow Task 1: The attempt to add a row to the Data Flow task buffer failed with error code 0xC0047020.
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Smash126Hi Smash126,
Based on the error message” Could not allocate a new page for database REPORTING' because of insufficient disk space in filegroup 'PRIMARY'. Create the necessary space by dropping objects in the filegroup, adding additional files to the filegroup, or setting
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The following document about Add Data or Log Files to a Database is for your reference:
http://msdn.microsoft.com/en-us/library/ms189253.aspx
If there are any other questions, please feel free to ask.
Thanks,
Katherine Xiong
Katherine Xiong
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If we have query like select * from {tablename} (Here tablename is the variable) then will the use of prepared staement improve the performance? My guess is use of statement in this case is a better option rather than prepared statement as the tablename may change for every other query.I think are not useful if tablename changes.They are useful only when the where clause has dynamic values.cantor wrote:
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>
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Using case statement in merge when matched
Hi,
I want to use case statement in the when matched clause of merge statement to ensure that I update only those fields that are undated.
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NAME1 VARCHAR2(25),
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Thanks.
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Edited by: 808255 on Nov 12, 2010 4:22 AMHi
In that case you would have to use multiple statements and you may as well just use UPDATE instead of MERGE. Also, are you sure that you aren't trying to to fix a problem that doesn't actually exist.
Think about where the execution time is going to come from...
I would be tempted to do 1 UPDATE like this...
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I don't this the cost of the update is going to be as great as you think.
Cheers
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Hi all!
I have installed JDeveloper 11g (11.1.1.3.0)
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