How to fill a Tree in Java?

Hello,
I have a tree to realize the navigation on my site and now I want to build this tree in a dataProvider. I found the class SimpleTreeData which seems to link to the <nodes>-Tag but I can't get it work. Here are some code extracts:
DataProvider:
private SimpleTreeData createShopNode(String text, String description)
SimpleTreeData data = new SimpleTreeData();
data.setText( text );
if ( description != null )
data.setDescription( description);
data.setDestination( "http://bali.us.oracle.com");
data.setDestinationText( "More Information");
return data;
private DataObject createData(RenderingContext context, String ns, String name)
SimpleTreeData treeRoot = new SimpleTreeData();
SimpleTreeData shop = createShopNode("Shop", "Spend some money!");
SimpleTreeData books = createShopNode("Books", null);
SimpleTreeData umbrellas = createShopNode("Umbrellas", "Rain, rain go away");
SimpleTreeData art = createShopNode("Art", "Picasso et al");
books.addChild( art);
shop.addChild(books);
shop.addChild(umbrellas);
DictionaryData lDictionaryData = new DictionaryData();
lDictionaryData.put( "dynamicNode", shop);
return lDictionaryData;
This is my UIX Page:
<provider>
<data name="TreeProxy">
<method class="test.DataTrees" method="getTreeProxy"/>
</data>
<data name="treeData">
<method class="test.NavigationNodes"
method="createData"/>
</data>
</provider>
<tree data:proxy="proxy@TreeProxy">
<include data:node="dynamicNode@treeData"/>
</tree>
Thanks,
Christian

Perhaps it is helpful, I get this Exception:
java.lang.IllegalAccessException: de/oc/vera/navigation/NavigationNodes
java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[])
native code
oracle.cabo.ui.data.DataObject oracle.cabo.ui.data.provider.MethodDataProvider.getDataObject(oracle.cabo.ui.RenderingContext, java.lang.String, java.lang.String)
oracle.cabo.ui.data.DataObject oracle.cabo.ui.data.provider.TableDataProvider.getDataObject(oracle.cabo.ui.RenderingContext, java.lang.String, java.lang.String)
oracle.cabo.ui.data.DataObject oracle.cabo.ui.data.provider.CachingDataProvider.getDataObject(oracle.cabo.ui.RenderingContext, java.lang.String, java.lang.String)
oracle.cabo.ui.data.DataObject oracle.cabo.ui.data.provider.DataProviderStack.getDataObject(oracle.cabo.ui.RenderingContext, java.lang.String, java.lang.String)
oracle.cabo.ui.data.DataObject oracle.cabo.ui.laf.base.TryRenderer$CatchContext.getDataObject(oracle.cabo.ui.RenderingContext, java.lang.String, java.lang.String)
oracle.cabo.ui.data.DataObject oracle.cabo.ui.RenderingContextProxy.getDataObject(java.lang.String, java.lang.String)
java.lang.Object oracle.cabo.ui.data.DataBoundValue.getValue(oracle.cabo.ui.RenderingContext)
java.lang.Object oracle.cabo.ui.BaseUINode.getAttributeValueImpl(oracle.cabo.ui.RenderingContext, oracle.cabo.ui.AttributeKey, boolean)
java.lang.Object oracle.cabo.ui.BaseUINode.getAttributeValue(oracle.cabo.ui.RenderingContext, oracle.cabo.ui.AttributeKey)
oracle.cabo.ui.data.DataObjectList oracle.cabo.ui.laf.base.BaseLafRenderer.getDataObjectListAttributeValue(oracle.cabo.ui.RenderingContext, oracle.cabo.ui.UINode, oracle.cabo.ui.AttributeKey)
void oracle.cabo.ui.laf.browser.TreeRenderer.renderContent(oracle.cabo.ui.RenderingContext, oracle.cabo.ui.UINode)
void oracle.cabo.ui.BaseRenderer.render(oracle.cabo.ui.RenderingContext, oracle.cabo.ui.UINode)
void oracle.cabo.ui.laf.xhtml.XhtmlLafRenderer.render(oracle.cabo.ui.RenderingContext, oracle.cabo.ui.UINode)
void oracle.cabo.ui.BaseUINode.render(oracle.cabo.ui.RenderingContext, oracle.cabo.ui.UINode)
void oracle.cabo.ui.BaseUINode.render(oracle.cabo.ui.RenderingContext)
void oracle.cabo.ui.BaseRenderer.renderChild(oracle.cabo.ui.RenderingContext, oracle.cabo.ui.UINode)
void oracle.cabo.ui.BaseRenderer.renderIndexedChild(oracle.cabo.ui.RenderingContext, oracle.cabo.ui.UINode, int)

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So, here's the problem:
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webservice as needed (triggered by the tree itself), making it a
`live model`. If there is a way to produce the same behaviour in
flex2, I haven't found it yet. Sure, I've only downloaded the trial
version yesterday, so I may have overlooked some docs or blogs.
Any hints would be appreciated, specially on programatically
modifying the tree, and making calls to the webservice changing the
parameters every time.

I would re-post to the Flex Data Services forum.

How to create a tree structure using list items(tlist)

HI every one,
As we know how to create a tree structure using Hierarchy item type.
We have a requirement to create The same tree like structure using List Item(Tlist)
I would be so appreciated If you send with an example
Thanks
RangaReddy

Hi all
Any one help me please
Actually our client requirement is creation of tree structure using list item,similar to what we used in oracle Application(FNDSCSGN) form.We did the tree structure using hierarchy tree using Htree and Ftree.It working excelently.For client requirement, we want to use list item.How PJC(Pluggable Java Components) is useful for using list item(Tlist).I can't understand how it is useful.
Do you have any example please help me.
Thanks
RangaReddy

How to fill a hashed table ?

Hi,
In my last thread i had asked about the ways of deleting the cube contents selectively using a job/FM and i was suggested this by one of you.
CALL FUNCTION 'RSDRD_SEL_DELETION'
EXPORTING
I_DATATARGET = 'YOUR_CUBE'
I_THX_SEL = L_THX_SEL
I_AUTHORITY_CHECK = 'X'
I_THRESHOLD = '1.0000E-01'
I_MODE = 'C'
I_NO_LOGGING = ''
I_PARALLEL_DEGREE = 1
I_NO_COMMIT = ''
CHANGING
C_T_MSG = L_T_MSG.
Although the FM is the correct one the structure L_THX_SEL is a hashed table structure and i am not aware how to fill values into it. My requirement is to give a condition for the 0CALDAY info-object i.e 0CALDAY < 30 days. Please suggest me.
Regadrs,
Pramod M

HI,
Internal Tables
Internal tables provide a means of taking data from a fixed structure and storing it in working memory in ABAP. The data is stored line by line in memory, and each line has the same structure. In ABAP, internal tables fulfill the function of arrays. Since they are dynamic data objects, they save the programmer the task of dynamic memory management in his or her programs. You should use internal tables whenever you want to process a dataset with a fixed structure within a program. A particularly important use for internal tables is for storing and formatting data from a database table within a program. They are also a good way of including very complicated data structures in an ABAP program.
Data Type of an Internal Table
The data type of an internal table is fully specified by its line type, key, and table type.
Line Type
The line type of an internal table can be any data type. The data type of an internal table is normally a structure. Each component of the structure is a column in the internal table. However, the line type may also be elementary or another internal table.
Key
The key identifies table rows. There are two kinds of key for internal tables - the standard key and a user-defined key. You can specify whether the key should be UNIQUE or NON-UNIQUE. Internal tables with a unique key cannot contain duplicate entries. The uniqueness depends on the table access method.
At tables with structured row type, the standard key is formed from all character-type columns of the internal table. If a table has an elementary line type, the default key is the entire line. The default key of an internal table whose line type is an internal table, the default key is empty. At tables with non-structured row type, the standard key consists of the entire row. If the row type is also a table, an empty key is defined.
The user-defined key can contain any columns of the internal table that are no internal table themselves, and do not contain internal tables. References are allowed as table keys. Internal tables with a user-defined key are called key tables. When you define the key, the sequence of the key fields is significant. You should remember this, for example, if you intend to sort the table according to the key.
Table type
The table type determines how ABAP will access individual table entries. Internal tables can be divided into three types:
Standard tables have an internal linear index. From a particular size upwards, the indexes of internal tables are administered as trees. In this case, the index administration overhead increases in logarithmic and not linear relation to the number of lines. The system can access records either by using the table index or the key. The response time for key access is proportional to the number of entries in the table. The key of a standard table is always non-unique. You cannot specify a unique key. This means that standard tables can always be filled very quickly, since the system does not have to check whether there are already existing entries.
Sorted tables are always saved sorted by the key. They also have an internal index. The system can access records either by using the table index or the key. The response time for key access is logarithmically proportional to the number of table entries, since the system uses a binary search. The key of a sorted table can be either unique or non-unique. When you define the table, you must specify whether the key is to be UNIQUE or NON-UNIQUE. Standard tables and sorted tables are known generically as index tables.
Hashed tables have no linear index. You can only access a hashed table using its key. The response time is independent of the number of table entries, and is constant, since the system access the table entries using a hash algorithm. The key of a hashed table must be unique. When you define the table, you must specify the key as UNIQUE.
Generic Internal Tables
Unlike other local data types in programs, you do not have to specify the data type of an internal table fully. Instead, you can specify a generic construction, that is, the key or key and line type of an internal table data type may remain unspecified. You can use generic internal tables to specify the types of field symbols and the interface parameters of procedures . You cannot use them to declare data objects.
Internal Tables as Dynamic Data Objects
Internal tables are always completely specified regarding row type, key and access type. However, the number of lines is not fixed. Thus internal tables are dynamic data objects, since they can contain any number of lines of a particular type. The only restriction on the number of lines an internal table may contain are the limits of your system installation. The maximum memory that can be occupied by an internal table (including its internal administration) is 2 gigabytes. A more realistic figure is up to 500 megabytes. An additional restriction for hashed tables is that they may not contain more than 2 million entries. The line types of internal tables can be any ABAP data types - elementary, structured, or internal tables. The individual lines of an internal table are called table lines or table entries. Each component of a structured line is called a column in the internal table.
Choosing a Table Type
The table type (and particularly the access method) that you will use depends on how the typical internal table operations will be most frequently executed.
Standard tables
This is the most appropriate type if you are going to address the individual table entries using the index. Index access is the quickest possible access. You should fill a standard table by appending lines (ABAP APPENDstatement), and read, modify and delete entries by specifying the index (INDEX option with the relevant ABAP command). The access time for a standard table increases in a linear relationship with the number of table entries. If you need key access, standard tables are particularly useful if you can fill and process the table in separate steps. For example, you could fill the table by appending entries, and then sort it. If you use the binary search option (BINARY) with key access, the response time is logarithmically proportional to the number of table entries.
Sorted tables
This is the most appropriate type if you need a table which is sorted as you fill it. You fill sorted tables using the INSERTstatement. Entries are inserted according to the sort sequence defined through the table key. Any illegal entries are recognized as soon as you try to add them to the table. The response time for key access is logarithmically proportional to the number of table entries, since the system always uses a binary search. Sorted tables are particularly useful for partially sequential processing in a LOOP if you specify the beginning of the table key in the WHEREcondition.
Hashed tables
This is the most appropriate type for any table where the main operation is key access. You cannot access a hashed table using its index. The response time for key access remains constant, regardless of the number of table entries. Like database tables, hashed tables always have a unique key. Hashed tables are useful if you want to construct and use an internal table which resembles a database table or for processing large amounts of data.
If help full please give me max Reward

How to fill a Tree in Java?

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