How to store complex data in session object
Hi All,
I have a requirement like this, I have to store some complex data(like some object) in webdynpro session object.
I know that i can store some string value in session by using wdScopeUtil and is it possible to store some complex data like(object ot object array).
See i have some ContryTO[] object which contains countrycode and value i have to store this Array object in session.How can I solve this problem,i am strucked regarding this pls help me regarding this issue.
Regards,
saleem
Bala,
Go thru this link. It may be useful to you.
Maintaining caching for a user session in webdynpro
List elementList = new ArrayList();
// set values to your list.
IMaintainScope maintainer = Utils.getScopeMaintainer(WDScopeType.APPLICATION_SCOPE);
maintainer.getScope().put("list",elementList);
List elementList1 = (List)maintainer.getScope().get("list");
Regards,
Sridhar
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i got a piece of code from the net which allows me to parse th file:
import java.io.IOException;
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How to access complex data type objects in webdynpro
Hi
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request(I level)
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requestheader(III level)
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How to store the data coming from network analyser into a text or excel file
Hii everyone
I'm using Agilent 8719ET network analyser and wish to store the data coming from netowrk analyser into a text file/ excel file.
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Attachments:
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How to store multiple data in one aray at one go?
Hi i am creating a Recipe Cooking Book and i have got a recipe class, ingredient class, equipment class and jFORM GUI. the gui form will have a list and it will contain couple of equipments. the user should be able to select more than 1 equipments which would use the pass- by - value to the recipe class and it will be passed to equipment class.
The problem that encounter is that when i have to select multiple values from list, it should store all selected equipments to array.
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This is my recipe constructor in recipe class
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*equipment[j] = aequipment[k];*
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this is The command that i have in Jform gui
public void jRcreateButton_actionPerformed(ActionEvent e) {
int i=0;
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Let me conclude what i am trying to do. Basically i want the user to select more than 1 equipments from the List and the user should also input other recipe data. once this is done, the should click on create.
when creating one recipe, u need more than 1 equipment so that created recipe should store selected equipments, which i will later on retrieve and display on screen.
can u please guide me where i am goin wrong and how i could fix it.
thank you in advance
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Hi! everyone.
I want to know
if I have a File, and the data in the file are type int, type String...
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Edited by: Terry001 on Apr 30, 2008 1:13 PMNo, a line in the file is just part of a question
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public void loadQuestionsFromFile(String fileName) throws FileNotFoundException
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File fileReader = new File("input.txt");
Scanner sc = new Scanner(fileReader);
while (sc.hasNextLine())
// I don't know how to pass the data I got from the nextLine() method to the ArrayList because they are of different type
catch (FileNotFoundException a)
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How to return complex data to PL/SQL pkg from java running in JVM
Hi, I don't know where could I post this question, so I post it here.
In Oracle, we could create object as type, and can pass it to Java (powered by JDBC I guess, but I don't know how to, if some one know, please tell me where could get the good document to teach me about this), but is there any way could return complex data (maybe in Oracle Object Type) to PL/SQL (not using long & seperated by sign string / using middle table)?
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select 1 id,'a' type_cd from dual union all
select 1 id,'b' type_cd from dual union all
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select 33 id,'c' type_cd from dual union all
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type_cd
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count(distinct type_cd) over(partition by id) cnt,
row_number() over(partition by id,type_cd order by 1) rn
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and cnt = 1
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2 c
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How to pass complex data type structure to WebService under mx:request?
From my Flex client, I need to pass data to a web service whose operation expects a complex data type with multiple layers of nesting structure. How can I populate the <mx:request> for the <mx:WebServices>? Any examples?
A couple of approaches come to my mind:
(1) construct ActionScript object to mimic the datatype expected by web service, and pass an instance of the AS object to mx:request; or
(2) construct an entire SOAP request body in XML and pass it into mx:request.
Does any of these (or both) work? If both work, which is the better way?
Thanks in advance for your input!
-WilliamThanks a lot for the rapid response, Marcel.
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How to store measurement data in a single database row
I have to store time-data series into a database and do some analysis using Matlab later. Therefore the question might be more a database question rather than Diadem itself. Nevertheless I'm interested if anyone has some best practices for this issue.
I have a database which holds lifecycle records for certain components of same nature and different variants. Depending on the variant I have test setups which record certain data. There is a common set of component properties and a varying number of environmental measurements to be included. Also the duration of data acquisition varies across the variants.
Therefore having tables appears to be non-optimal solution for storing the data because the needed number of columns is unknown. Additionally I cannot create individual tables for each sample of a variant. This would produce to many tables.
So there are different approaches I have thought of:
Saving the TDM and TDX files as text respectively as BLOB
This makes it necessary to use intermediate files.
Saving the data as XML text
I don’t know yet if I can process XML data in Matlab
Has anybody an advice on that problem?
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ChrisChris
Sorry for the lateness in replying to your post.
I have done quite a bit of using a Database to store test results. (In my case this was Oracle DB, using a system called ASAM-ODS)
My 2 Cents:
Three functions were needed by users for me. 1) To search and find the tests, and 2) To take the list of Tests and process the data into a report/output summary. 2) If the file size is large, then being able to import the data quickly into analysis tool speeds up processing.
1) Searching for test results. This all depends on what parameters are of value for searching. In practice this is a smaller list of values(usually under 20), but I have had great difficulty getting users to agree on what these parameters are. They tend to want to search for anything. The organization of the searching parameters has direct relationship to how you can search. The NI Datafinder does a nice job of searching for parameters, so long as the parameter data are stored in properties of Channel Groups or Channels. It does not search or index if the values are in channel values.
Another note: Given these are searchable parameters, it helps greatly if these parameters have a controlled entry, so that the parameters are consistent over all tests, and not dependent on free form entry by each operator. Searching becomes impossible if the operators enter dates/ names in wildly different formats.
2) Similar issue exists if put values into databases. (I will use the database terms of Table and column(Parameter) and Row (instance of Data that would be one test record.)
The sql select statement, can do fast finds, if store the searchable parameters in rows of a table. Where would have one row for each Test Record. The files I worked with have more than 2000 parameters. Making a table that would store all of these, and be able to search for all of these, makes a very large number of rows. I did not like this approach, as it has substantial maintenance time, and when changes are made, things get ugly quick.
3)This is where having the file format be something that the analysis tool can quickly load up is beneficial. Especially if the data files are large. In DIAdem's case, it reads TDM,TDMS files very quickly into the dataportal. It can also read in the MDF or HDF files, but these are hierarchical structures that require custom code to traverse the information, and get the information into dataportal to use in Analysis /reporting. (Takes more time to read data, but have much more flexibility in the data structure than the two level tdm/tdms format.)
My personal preferences
I would not want to put the test data into a Table row. Each of the columns would be fixed and the table would be very wide in columns.
>
I personally like to put the test Data into a file, like TDMS, MDF, or HDF and then the database would have a entry for the reference to the attachment. The values that are in the database is just the parameters that are used for test Searching, either in datafinder or in sql commands in the user interface.
Hopefully these comments help your tasks some.
Respectfully,
Paul
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How to store bit data in VARCHAR(4000) field?
Hi.
Please help!
We are porting some C/C++ software with embedded SQLs from NT/DB2 to Linux/Oracle.
On NT/DB2 we have some table to store file data in a VARCHAR(4000) blocks.
Table looks like this
CREATE TABLE FileData (filetime as timestamp not null, idx int not null, datablock varchar(4000) FOR BIT DATA not null, primary key (filetime, idx) );
As you can see DB2 has appropriate field modifier - "FOR BIT DATA" which makes DB2 storing data as-is, not converting characters.
I need to know - if it is possible to do the same in Oracle like in DB2?
If Oracle has some kind of field modifier like "FOR BIT DATA" in DB2?
If not, how can I do the same in Oracle?
The current problems are:
1) when application imports the file with some national chars the Oracle stores "?" in a database in place of national chars.
2) another piece of a problem - if file is more than 4000 bytes length, it reports the ORA-01461 error (see it is trying to expand some chars to UTF8 char which is not fit a single char, so finally - not fit the field size).
So, it seems that it cannot proceed national chars at all. :-\
For details please see enclosed [C code|http://dmitry-bond.spaces.live.com/blog/cns!D4095215C101CECE!1606.entry] , there is example how data written to a table.
In other places we also need to read data from FIELDATA table and store back to file (other filename, other location).
Here is summary on a field-datatype variants I have tried for the "datablock" field:
1) VARCHAR2, RAW, LONG RAW, BLOB - does not work! All reports the same error - ORA-01461.
2) CLOB, LONG - both working fine but(!) both still returns "?" instead of national chars on data reading.
Hint: how I did try these field types - I just drop the "FileData" table, created it using different type for "datablock" field and run the same application to test it.
I think I need to explain what the problem - we do not provide direct access to Oracle database, we use a some middle-ware. Middle-ware is a C/C++ software which also has a interface for dynamic SQLs execution. So, exactly this middle-ware (which is typically running on the same server with Oracle) receives the "?" instead of national chars! But we need it to return all data AS-IS(!) without any changes!!! That is wjhy I did ask - if Oracle has any options to store byte-data as-is?
The BIG QUESTION - HOW CAN WE DO THIS?!
Another thing I need to explain - it is ok to use Oracle-specific SQL ONLY IF THERE IS REALLY NO WAY TO ACHIEVE THIS WITH STANDARD SQL! Please.
So, please look on a C code (by link I have posted above) and tell - if it is possible to make working in Oracle the VARCHAR approach we using at the moment?
If not - please describe what options do we have for Oracle?
Regards,
Dmitry.
PS. it is Oracle 11gR2 on CentOS 5.4, all stuff installed with default settings, so Oracle db encoding is "AL32UTF8".
C/C++ application is built as ANSI/ASCII application (non-unicode), so sizeof(char)=1.
The target Oracle db (I mean - the one which will be used on customer site) is Oracle 10g. So, solution need to be working on Oracle 10g.P. Forstmann wrote:
There is some contradiction in your requirements:
- if you want to store data as is without any translation use RAW or BLOB
- if you want to store national character data try to use NVARCHAR2 or NCLOB.Seems you did not understand the problem. Ok, I'll try to explain. Please look on the code sample I provided in original question
(I just added expanded data structures there, sorry I forgot to publish them when post original question):
EXEC SQL BEGIN DECLARE SECTION;
struct {
char timestamp[27];
char station[17];
char filename[33];
char task[17];
char orderno[17];
long filelen;
gFilehead;
struct {
char timestamp[27];
long idx;
struct {
short len;
char arr[4001];
} datablock;
gFiledata;
EXEC SQL END DECLARE SECTION;
#define DATABLOCKSIZE 4000
#ifdef __ORACLE
#define VARCHAR_VAL(vch) vch.arr
#elif __DB2
#endif
short dbWriteFile( char *databytes, long datalen )
short nRc;
long movecount;
long offset = 0;
gFilehead.filelen = gFilehead.filelen + datalen;
while ((datalen + gFiledata.datablock.len) >= DATABLOCKSIZE)
movecount = DATABLOCKSIZE - gFiledata.datablock.len;
memcpy(&VARCHAR_VAL(gFiledata.datablock)[gFiledata.datablock.len], databytes, movecount);
gFiledata.datablock.len = (short)(gFiledata.datablock.len + movecount);
exec sql insert into filedata (recvtime, idx, datablock)
values(
:gFiledata.recvtime type as timestamp,
:gFiledata.idx,
:gFiledata.datablock /* <--- ORA-01461 appears here */
nRc = sqlcode;
switch (nRc)
case SQLERR_OK: break;
default:
LogError(ERR_INSERT, "filedata", IntToStr(nRc), LOG_END);
exit(EXIT_FAILURE);
offset = offset + movecount;
datalen = datalen - movecount;
gFiledata.idx = gFiledata.idx + 1;
memset(&gFiledata.datablock, 0, sizeof(gFiledata.datablock));
databytes = databytes + movecount;
gFiledata.datablock.len = 0;
if (datalen + gFiledata.datablock.len)
memcpy(&VARCHAR_VAL(gFiledata.datablock)[gFiledata.datablock.len], databytes, datalen);
gFiledata.datablock.len = (short)(gFiledata.datablock.len + datalen);
return 0;
}So, the thing we need is - to put some data into the "datablock" field of following structure:
struct {
char timestamp[27];
long idx;
struct {
short len;
char arr[4001];
} datablock;
gFiledata;Then insert it into a database table using static SQL like this:
exec sql insert into filedata (recvtime, idx, datablock)
values(
:gFiledata.recvtime type as timestamp,
:gFiledata.idx,
:gFiledata.datablock /* <--- ORA-01461 appears here */
); And then expect to read exactly the same data back!
The problems are:
1) Oracle make decision to convert the data we are inserting (why? and how to disable converting?!)
2) even if it inserts the data (CLOB and LONG field datatypes are working fine when inserting data with such static SQL + such host variable) then it became not readable! (why?! how to make it readable?!)
P. Forstmann wrote:
ORA-01461 could mean that you have a wrong data type for bind variable variable in your client code:Not me decided that host variable is the "LONG datatype value" - the Oracle make that decision instead of me. And that is the problem!
Looks like Oracle react on any char code >= 0x80.
So, assume if I run the code:
// if Tab1 was created as "CREATE TABLE Tab1 (value VARCHAR(5))" then
char szData[10] = "\x41\x81\x82\x83\x84";
EXEC SQL INSERT INTO Tab1 (value) VALUES (:szData);
Oracle will report the ORA-01461 error!
EXACTLY THIS IS THE PROBLEM I HAVE DESCRIBED IN MY ORIGINAL QUESTION.
So, problem - why Oracle make such decision instead of me?! How we can make Oracle insert data into a table AS-IS?
What other type of host variable we should use to make Oracle think that data is a binary?
void*? unsigned char? Could you please provide any examples?
Ok, you did recommend - "use the RAW datatype". But RAW datatype is limited to size 2000 bytes only - we need 4000! So, it is not match our needs at all.
Also you have mentioned "use BLOB" - but testing shows that Oracle reports the same ORA-01461 error on inserting data into a BLOB field from such host variable! (see the code I posted)
What also we can do?
Change type of host variables? BUT HOW?! -
How to store the data instead of memoryengine to database when use XML file
Hi Experts,
I have doubt which is into XML to database data transfer.
While transferring the data from XML to database the tables will be store in memory for the xml files, my aim is instead of storing this in memory engine
is there any way to store the data in to the data base itself..
I am assuming when the data size increases say for example huge amount data, storing this much of data is big issue here right, so to avoid this is there any way to store
this data directly in the database level.
Please understand my requirement or else I have the good explanation about my requirement and please assist me how do this job....
Thx,
Sahadeva.Hi Experts,
For this job I have applied the
jdbc:snps:xmll?f=/mydata/xml/file.xml&s=wrk_admin&dp_driver=oracle.jdbc.driver.OracleDriver&dp_url=jdbc:oracle:thin:@localhost:1521:xel&dp_user=wrk_admin&dp_password=bPyXS2eRXw8fWnKEmTYSEf&dp_schema=wrk_admin&dp_doc=Y
my schema name is wrk_admin
xml file name is mydata
jdbc driver: localhost:1521:xe
Encoded password: I have encoded the pwd from cmd:c:oracle\oracle_odi1\oracledi\agent\bin\encode wrk_admin
The above are the details I have applied to my ODI studio for creating the dataserver.
After applying this I got the following error.
Could you please correct me here if I am wrong...
jdbc:snps:xml?param1=value1¶m2=value2&...
at oracle.odi.jdbc.datasource.LoginTimeoutDatasourceAdapter.doGetConnection(LoginTimeoutDatasourceAdapter.java:133)
at oracle.odi.jdbc.datasource.LoginTimeoutDatasourceAdapter.getConnection(LoginTimeoutDatasourceAdapter.java:62)
at com.sunopsis.sql.SnpsConnection.testConnection(SnpsConnection.java:1118)
at com.sunopsis.graphical.dialog.SnpsDialogTestConnet.getLocalConnect(SnpsDialogTestConnet.java:420)
at com.sunopsis.graphical.dialog.SnpsDialogTestConnet.localConnect(SnpsDialogTestConnet.java:860)
at com.sunopsis.graphical.dialog.SnpsDialogTestConnet.jButtonTest_ActionPerformed(SnpsDialogTestConnet.java:806)
at com.sunopsis.graphical.dialog.SnpsDialogTestConnet.connEtoC1(SnpsDialogTestConnet.java:165)
at com.sunopsis.graphical.dialog.SnpsDialogTestConnet.access$1(SnpsDialogTestConnet.java:161)
Thx,
Sahadeva. -
How to store xml data fragments, that will not be queried?
Hello,
Delphi Client application communicates with Java Server application via XML messages. Client sends XML message over HTTP Post method. Java Servlet gets XML message, parses it, performs requested action (select/insert/update/delete), generates resulting response and sends it back to the Client.
I use Oracle DB XE 10.2.
For example: Client sends a request to the server, to append certain Order with new Product info:
Request:
<?xml version="1.0" encoding="UTF-8" ?>
- <Request OrderID="123123123" Action="NewProduct">
- <Product TempProdID="2" ProdName="L01" VisualID="1" Amount="1" TechClass="1" TechSubject="1" TechVersion="0" TechName="TestTech" ElemOk="0">
<Modified UserID="XXX" UserGroup="XXX" GroupLevel="0" />
- <QuickInfo>
<ProdIcon Format="PNG"
Encoding="Base64">iVBORw0KGgoAAAANSUhEUgAAAEAAAABACAIAAAA
lC+aJAAAAA3RSTlP////6yOLMAAAAvElEQVR42u3aQQ6EIAwAQP7/afe0
mo1mBVur0emJgwGmRDFNWwvH9I153OpjyoisefqXW3afm4WypP+MgomvT
z8AAAAAAAAAAAAAAMAzAClzAWQAdvexfqATEKmA/Fm0rYs5ozvoAWyWj4
ZqJ9efQKR8BJAHOPEdKAAc/lLdAhC/K68EBG+JWwAixfABgF8Jf6MAAAA
AAAAAAAAAAAAALwRUGgAAAAAAsgGJ3cfVrcfFl2jiIZzV+V7Zd/8BOtNi
0MnJ58oAAAAASUVORK5CYII=
</ProdIcon>
<Parameters />
</QuickInfo>
- <TechProduct CurVer="1" MinVer="1" TotalItems="330" ItemNodeSize="55074">
- <SubItem Class="TPlGraph" BindID="00B9C004">
<PropList />
- <SubItem Ident="Profiles" Class="TProfileList" Child="1" BindID="0188598C">
<PropList />
- <SubItem Class="TPlProfile" Child="1" BindID="018CA6CC">
- <PropList>
<Property PropIdent="ProfBaze0X" ValText="0" />
<Property PropIdent="ProfBaze0Y" ValText="990" />
<Property PropIdent="ProfBaze1X" ValText="990" />
<Property PropIdent="ProfHier0" ValText="0" />
- <Property PropIdent="InBorder" ValIdent="None" ValText="Nėra">
<ExtValue ColIdent="ItemCode" Value="None" />
<ExtValue ColIdent="Type" Value="" />
<ExtValue ColIdent="Filter" Value="" />
<ExtValue ColIdent="Width" Value="0" />
<ExtValue ColIdent="TechCall" Value="" />
</Property>
</PropList>
</SubItem>
</SubItem>
</SubItem>
</TechProduct>
</Product>
</Request>
I use DOM parsers to parse the received requests, extract certain info and insert it into relational tables using standart SQL queries.
My question is: what is the best way to store XML data fragments, that are not required to be saved relationally? I need to save the content of node <TechProduct> from the above example to relational table's column. There will be no need to query this column, no need to use relational views. I will use it only when Client application will request to modify certain order's product. Then I will have to send back the same <TechProduct> node via XML response.
So what column type do I have to use? CLOB? XMLType? Is it better to use object types? Do I have to register XML Schema for better performance? The size of the fragment can be ~2MB.
Thanks for your help
Message was edited by:
KichasThank you for reply,
As you suggested, I will use XMLType storage as CLOB (without XML Schema).
As I mentioned before, I use Java Servlet, deployed on Tomcat WebServer, to receive XML messages from Client application via HTTP POST method.
I use these libs to get the XML payload and parse it into a Document:
import org.w3c.dom.*;
import org.xml.sax.InputSource;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
And here is the code:
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try {
// get the XML payload and parse it into a Document
DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
Document dom;
InputSource input = new InputSource(request.getInputStream());
dom = docBuilder.parse(input);
catch(Exception ex) {
System.out.println("Exception thrown in XmlService");
ex.printStackTrace();
throw new ServletException(ex);
I create a relational table, that contains XMLType column:
CREATE TABLE xwarehouses (
warehouse_id NUMBER,
warehouse_spec XMLTYPE)
XMLTYPE warehouse_spec STORE AS CLOB;
Now I want to insert all DOM Document into XMLType column. So I do like this:
import oracle.xdb.XMLType;
String SQLTEXT = "INSERT INTO XWAREHOUSES (WAREHOUSE_ID, WAREHOUSE_SPEC) VALUES (?, ?)";
XMLType xml = XMLType.createXML(con,dom);
PreparedStatement sqlStatement = con.prepareStatement(SQLTEXT);
sqlStatement.setInt(1,2);
sqlStatement.setObject(2,xml);
sqlStatement.execute();
sqlStatement.close();
dom is the Document, that I got from HTTP Request input stream.
My servlet throws an exception:
java.lang.NoClassDefFoundError: oracle/xml/parser/v2/XMLParseException
at XmlService.GetMatListServiceHandler.processRequest(GetMatListServiceHandler.java:111)
at XmlService.XmlServiceHandler.handleRequest(XmlServiceHandler.java:43)
at XmlService.XmlServiceServlet.doPost(XmlServiceServlet.java:69)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:716)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)
why does he needs oracle.xml.parser.v2.XMLParseException? I don't use Oracle parser? Does this code line throws the exception (I am not able to debug my code, because I have not configured JDeveloper to be able to use Remote Debuging):
XMLType xml = XMLType.createXML(con,dom);
Does it reparses the given dom Document or what?. When I deploy xmlparserv2.jar to Tomcat, everything is ok, application inserts XML data into XMLType column.
Is there another way to insert the whole org.w3c.dom Document or Document fragment (that is already parsed) into XMLType column. Can you provide any sample code?
The Document may contain national symbols, so they should be correctly stored and then later retrieved.
Many thanks. -
How to store the data captured from oscilloscope into the MS Access database table
Hi All,
In my application, I tried to save the data captured from SCOPE, but could store only 200 bytes. I've taken the Memo data type for the field in database. I want to store all data ( 4 channels) in one field & retrieve back and display on the XY Graph.
Thanks in advance.
Regards,
Shrinikramish wrote:
Im pretty sure that Access does support JDBCNo it does not. It supports ODBC.
just doing a quick Google came up with some pages:
http://blog.taragana.com/index.php/archive/access-microsoft-access-database-from-java-using-jdbc-odbc-bridge-sample-code/
http://www.javaworld.com/javaworld/javaqa/2000-09/03-qa-0922-access.html
Both articles explains how to use the jdbc-odbc bridge. I think I've seen a pure jdbc driver for access but it wasn't from Microsoft and it wasn't free.
Kaj -
How to store spry data in php array
I am trying to store spry data in php array like this:
<? $foo= array();?>
<div spry:region="dsCALC">
<div spry:repeat="dsCALC">
<?php
$foo[]='{dsCALC::DataPrice}';
?>
</div>
</div>
<?var_dump($foo);?>
Outputs:
Array ( [0] => {dsCALC::DataPrice} )
If I tried a variable, it works ok... The array, not... Any ideas?Outputs:
Array ( [0] => {dsCALC::DataPrice} )
And so it should, because that is what you told the PHP-script to do in the following line of code.
$foo[]='{dsCALC::DataPrice}';
Please remember that PHP code is handled on the server, whereas JavaScript (Spry) is handeld on the client (browser) end. JavaScript cannot be handeld by PHP nor can JavaScript handel PHP.
My question to you is, why do you want to store the data in a PHP-array and how is the Spry data obtained?
Ben
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