JTree from root
If a TreeNode has been set as the root of a JTree, is there any method that will recover the JTree from the TreeNode (other than just coding the info into the program's data when you set the node as root)?
I managed to come up with a pair of jtree/node classes that do what I want, e.g. node.addNotify(newChild) causes the jtree display to update; I think this is better than node.add(newChild);<something update the jtree display> on the basis that `an intelligent object moves complexity from the many to the few'(Cline & Lomow _C++ FAQS+ p 42). I'm just surprised that this isn't made easier to do.
Similar Messages
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How to create JTree without root node
Hello;
I like to create a JTree without root node?
Any help?
Thanks!
--tonyjavadocs JTree,
setRootVisible
public void setRootVisible(boolean rootVisible)
Determines whether or not the root node from the TreeModel is visible.
Parameters:
rootVisible - true if the root node of the tree is to be displayedSee Also:
rootVisible -
Hello everyone,
I have to build a JTree from a table data from database. The table structure is
(id,parent_id,name). In order to build the tree, I have to the following 2 loop searching for the parent_id
while (i<size){
while(j<size){
//find it's parent_id
j++;
i++;
It is too slow! Can anyone help me?
Thanks!
--tcYou just add children to whatever the parent node is for that object.DefaultMutableTreeNode root = new DefaultMutableTreeNode();
child1 = new DefaultMutableTreeNode();
root.add( child1 );
grandChild = new DefaultMutableTreeNode();
child1.add( grandChild );
greatGrandChild = new DefaultMutableTreeNode();
grandChild.add( greatGrandChild );Etc. -
Populating JTree from database
Hi experts,
I need some feedbacks about the way i populate my JTree from database, Is there any better alternatives?
If yes, try explain it in detail.. I'm still new in Java.
Sample database table:
| node_id | name | parent | hasChild |
| 1 | garbage | null | 1 |
| 2 | item | 1 | 1 |
| 3 | mouse | 2 | 0 |
| 4 | board | 2 | 0 |
| 5 | item2 | 1 | 1 |
| 6 | item3 | 1 | 1 |
| 7 | pants | 5 | 0 |
-----------------------------------------------------------------------------------Here's the sample of my code:
//... ResultSet rs = .....
rs.last();
int rowCount = rs.getRow(); //Get the total number of row in database table
rs.beforeFirst();
int i = 0;
int j = 0;
String [] nodeID = new String[rowCount]; //The node ID
String [] parentID = new String[rowCount]; //A pointer to its parent ID
DefaultMutableTreeNode [] node = new DefaultMutableTreeNode[rowCount]; //The node
while(rs.next()) {
String name = rs.getString("name");
Boolean bool = rs.getBoolean("hasChild");
node[i] = new DefaultMutableTreeNode(name,bool);
parentID[i] = rs.getString("parent");
nodeID[i] = rs.getInt("node_id") + "";
//Set as root node when the pointer is null
if(parentID.equals("null")) {
rootNode = node[i];
i++;
for(i=0; i<rowCount; i++) {
for(j=0; j<rowCount; j++) {
if(parentID[j].equals(nodeID[i]) && node[i] != null) {
node[i].add(node[j]);
node[i] = null; //Obligates the parent after finish adding the child (to prevent unnecessary loops)
//... tree = new JTree(rootNode);
Thanks for the trouble,
Regards,
DavidThe execution time are base on the code i post'ed here.
Average over 30times using Vector = 640048 nanosecond to execute.
Vector<String> nodeID = new Vector<String>();
Vector<DefaultMutableTreeNode> node = new Vector<DefaultMutableTreeNode>();
Vector<String> parentID = new Vector<String>();
rs.last();
int rowCount = rs.getRow();
rs.beforeFirst();
k=0;
while(rs.next()) {
String name = rs.getString("name");
Boolean hasChild = rs.getBoolean("hasChild");
node.addElement(new DefaultMutableTreeNode(name,hasChild));
nodeID.addElement(rs.getInt("node_id")+"");
parentID.addElement(rs.getString("parent"));
if(parentID.elementAt(k).equals("null")) {
rootNode = node.elementAt(k);
k++;
i=0;
while(i<rowCount) {
j=0;
while(j<rowCount) {
if(parentID.elementAt(j).equals(nodeID.elementAt(i)) && node.elementAt(j) != null) {
node.elementAt(i).add(node.elementAt(j));
if(!node.elementAt(i).getAllowsChildren())
node.insertElementAt(null,j);
j++;
i++;
}Average over 30times using LinkedList = 95623 nanosecond to execute.
//This section will have a class Nodes
LinkedList<Nodes> gather = new LinkedList<Nodes>();
while(rs.next()) {
node = new DefaultMutableTreeNode(rs.getString("name"),rs.getBoolean("hasChild"));
gather.add(new Nodes(rs.getInt("node_id") + "",node,rs.getString("parent")));
for(Nodes findParent : gather) {
if(findParent.getParentID().equals("null")) {
findParent.setRoot(findParent.getNode());
rootNode = findParent.getRoot();
for(Nodes findChild : gather){
if(findChild.getParentID().equals(findParent.getNodeID()))
findParent.getNode().add(findChild.getNode());
}As for the Array method i used from the previous post, the Average code execution time is x3 larger than the vector i used. So please do not use that method.
Note: 1. The code i post can be improved further. 2. Execution time is based on individual computer.
Well, I think i'll stop here. Anyone who wanted to know which method is more efficient currently, here's the answer.
Hope that it helps anyone who have the problem here =).
Edited by: DavidTW on May 23, 2011 3:14 PM
Improved Version : Using for-each loop ( Effective Java, Second Edition, Joshua Bloch, Pg. 210). -
Confusion building JTree from path strings
If I have a bunch of strings like this:
"/dira/dir1/file1"
"/dira/dir1/file2"
"/dira/dir2/file1"
"/dira/dir3/anotherdir/file1"
etc.
Does anybody have an easy solution to getting them in a JTree that looks like this:
dira
|
+-dir1
| |
| +-file1
| |
| +-file2
|
+-dir2
| |
| +-file1
|
+-dir3
|
+-anotherdir
|
+-file1Mainly I am having trouble getting the tree to populate without duplicating nodes. For example dir1 gets listed twice. I am looking for a solution that will parse these strings and build the tree. I have found demos that read a file system, but nothing that works with strings. I have tried to pick apart the file system demos, but so far I can't get it to work correctly.
Thanks,
JeffThis compiles and works (with 1.4):
import java.awt.*;
import javax.swing.*;
import javax.swing.tree.*;
import java.util.HashMap;
public class TreeStrings extends JFrame {
public TreeStrings() {
super("Tree strings");
setDefaultCloseOperation(EXIT_ON_CLOSE);
setSize(500, 400);
String[] inputStrings = {"/dira/dir1/file1", "/dira/dir2/file1", "/dira/dir2/file2"}; // your bunch of Strings
DefaultMutableTreeNode rootNode = new DefaultMutableTreeNode("www");
HashMap nodeMap = new HashMap();
for(int i = 0; i < inputStrings.length; i++) {
String s = inputStrings;
DefaultMutableTreeNode lastNode = rootNode;
int lastIndex = 0;
while(true) {
DefaultMutableTreeNode tempNode = null;
int nextIndex = s.indexOf("/", lastIndex + 1); // <- i forgot + 1
if(nextIndex != -1) { //we are somewhere in middle of s, checking nodes from root to leaf, one by one.
String nodeKey = s.substring(0, nextIndex);
if(nodeMap.get(nodeKey) == null) { //no such node, must make one
String nodeName = s.substring(lastIndex, nextIndex); // you want the last nodeKey word for node name
DefaultMutableTreeNode newNode = new DefaultMutableTreeNode(nodeName);
nodeMap.put(nodeKey, newNode);
lastNode.add(newNode);
lastNode = newNode;
else { //allready such node, just put it to be lastNode
lastNode = (DefaultMutableTreeNode) nodeMap.get(nodeKey);
lastIndex = nextIndex;
else { //no more "/" , it means we are at end of s, and that all parent nodes for this leaf-node exist.
// and we just add the leaf node to last node
String leafName = s.substring(lastIndex, s.length());
DefaultMutableTreeNode leafNode = new DefaultMutableTreeNode(leafName);
lastNode.add(leafNode);
break; // go to next s
//You first make your tree structure with DefaultMutableNodes,
//Then make a DefaultTreeModel with the root node,
//Then make a Tree with the DefaultTreeModel
DefaultTreeModel treeModel = new DefaultTreeModel(rootNode);
JTree yourTree = new JTree(treeModel);
getContentPane().add(yourTree, BorderLayout.CENTER);
show();
public static void main(String[] args) {
new TreeStrings();
Anything else? -
How to Create Instances in the Transient Root Node and Sub Nodes from Root Node Query Method ?
Hi All,
I am Creating a BOPF BO with 3 Nodes,
Node 1) ROOT -- > contains a query,
using Root Node I have created Search UIBB Configuration in FBI.
In testing -- > when i enter Data in the Search Criteria Fields am able to get the details in to the query method
from Imporing parameter : 'IT_SELECTION_PARAMETERS'.
HERE I am fetching data from a standard table and trying to fill the data in the Node : 'MNR_SEARCH_RESULT'.
How to Append data to the Sub node 'MNR_SEARCH_RESULT' when there is no Node instance created in the ROOT Node ?
For This I have created an instance in the ROOT Node and Using that I tried to create Instance in the Sub Node 'MNR_SEARCH_RESULT'.
Below is my code which i have placed in the Query method ..
DATA : LR_DATA TYPE REF TO ZBO_S_ROOT1.
DATA : LR_SEARCH_RES TYPE REF TO ZBO_S_MNR_SEARCH_RESULT.
DATA : LO_CI_SERVICE_MANAGER TYPE REF TO /BOBF/IF_TRA_SERVICE_MANAGER,
LO_TRANSACTION_MANAGER TYPE REF TO /BOBF/IF_TRA_TRANSACTION_MGR.
LO_CI_SERVICE_MANAGER = /BOBF/CL_TRA_SERV_MGR_FACTORY=>GET_SERVICE_MANAGER( IV_BO_KEY = ZIF_BO_TEST_PO_C=>SC_BO_KEY ).
LO_TRANSACTION_MANAGER = /BOBF/CL_TRA_TRANS_MGR_FACTORY=>GET_TRANSACTION_MANAGER( ).
CREATE DATA LR_DATA.
LR_DATA->KEY = LO_CI_SERVICE_MANAGER->GET_NEW_KEY( ).
LR_DATA->ROOT_KEY = IS_CTX-ROOT_NODE_KEY.
LR_DATA->PIPO_MAT_ID = '100100'.
LR_DATA->PIPO_MAT_DESC = 'MATERIAL'.
LR_DATA->PIPO_SPRAS = 'E'.
LR_DATA->PIPO_MATL_TYPE = 'ZPMI'.
LR_DATA->PIPO_MATL_GROUP = 'ZKK'.
DATA lt_mod TYPE /bobf/t_frw_modification.
DATA lo_change TYPE REF TO /bobf/if_tra_change.
DATA lo_message TYPE REF TO /bobf/if_frw_message.
FIELD-SYMBOLS: <ls_mod> LIKE LINE OF lt_mod.
APPEND INITIAL LINE TO lt_mod ASSIGNING <ls_mod> .
<ls_mod>-node = ZIF_BO_TEST_PO_C=>sc_node-ROOT.
<ls_mod>-change_mode = /bobf/if_frw_c=>sc_modify_create.
<ls_mod>-key = LR_DATA->KEY.
<ls_mod>-data = LR_DATA.
DATA : LT_CHG_FIELDS TYPE /BOBF/T_FRW_NAME.
DATA : LS_CHG_FIELDS LIKE LINE OF LT_CHG_FIELDS.
DATA : LV_KEY TYPE /BOBF/CONF_KEY.
CALL METHOD IO_MODIFY->CREATE
EXPORTING
IV_NODE = ZIF_BO_TEST_PO_C=>sc_node-ROOT
IV_KEY = LR_DATA->KEY
IS_DATA = LR_DATA
IV_ROOT_KEY = IS_CTX-ROOT_NODE_KEY
IMPORTING
EV_KEY = LV_KEY .
CREATE DATA LR_SEARCH_RES.
LR_SEARCH_RES->KEY = LO_CI_SERVICE_MANAGER->GET_NEW_KEY( )..
LR_SEARCH_RES->PARENT_KEY = LV_KEY.
LR_SEARCH_RES->ROOT_KEY = LV_KEY.
LR_SEARCH_RES->MATNR = '123'.
LR_SEARCH_RES->ERSDA = SY-DATUM.
LR_SEARCH_RES->ERNAM = SY-UNAME.
**LR_SEARCH_RES->LAEDA = .
**LR_SEARCH_RES->AENAM = .
**LR_SEARCH_RES->VPSTA = .
*LR_SEARCH_RES->LVORM = .
LR_SEARCH_RES->MTART = 'ZPI'.
LR_SEARCH_RES->MBRSH = 'ZTP' .
LR_SEARCH_RES->MATKL = 'MAT'.
**LR_SEARCH_RES->BISMT = ''
**LR_SEARCH_RES->MEINS =
CALL METHOD io_modify->create
EXPORTING
iv_node = ZIF_BO_TEST_PO_C=>sc_node-MNR_SEARCH_RESULT
is_data = LR_SEARCH_RES
iv_assoc_key = ZIF_BO_TEST_PO_C=>sc_association-root-MNR_SEARCH_RESULT
iv_source_node_key = ZIF_BO_TEST_PO_C=>sc_node-root
iv_source_key = LV_KEY
iv_root_key = LV_KEY.
I am Unable to set data to the Node . I did not get any error message or Dump while executing . when i tried to retrive data I got the details from the node but am unable to view those details in the FBI UI and BOBT UI while testing .
Please provide your valuable Suggestions.
Thanks in Adv.
Thanks ,
Kranthi Kumar M.Hi Kranthi,
For your requirement you need only two nodes. Root Node and Result node. Use the same structure for both.
To create Instance while search.
Create Query method with input type which has the required fields for selection criteria.
Fetch the data and create instance in the root node.
Pass the new instance key as exporting parameter form Query Method.
To Move data from ROOT to Result.
Create a action at root node.
Write a code to create new entries in Result node.
Then configure the Search UIBB and display result in List UIBB. Add button and assign the action MOVE_MAT_2_RESULT.
Create another List uibb to display data from Result node.
Connect the UIBBs using wire schema. SEARCH -> LIST(ROOT) ---> LIST(RESULT).
Give src node association for ROOT to RESULT Configuration.
Regards,
Sunil -
How to remove namespace from root-element
Hi Gurus,
I want one xml output from xslt transformation with no namespace. I managed to remove namespace from child elements by leveraging elementFormDefault ='unqualified' property of xsd. But not able remove namespace from root-element.
Output that I want is :
<?xml version = '1.0' encoding = 'UTF-8'?>
<inp1:Email_Mod_Root>
<Email_Mod_Root_Element>
<Email_Record1>
<PERSON_NUMBER>123456</PERSON_NUMBER>
<COUNTRY/>
<EMAIL_TYPE>WORK</EMAIL_TYPE>
<EMAIL>EMAIL3</EMAIL>
<PRIMARY_FLAG>Y</PRIMARY_FLAG>
</Email_Record1>
</Email_Mod_Root_Element>
</Email_Mod_Root>
Output that I am getting:
<?xml version = '1.0' encoding = 'UTF-8'?>
<inp1:Email_Mod_Root xmlns:inp1="http://www.example.org">
<Email_Mod_Root_Element>
<Email_Record1>
<PERSON_NUMBER>123456</PERSON_NUMBER>
<COUNTRY/>
<EMAIL_TYPE>WORK</EMAIL_TYPE>
<EMAIL>EMAIL3</EMAIL>
<PRIMARY_FLAG>Y</PRIMARY_FLAG>
</Email_Record1>
</Email_Mod_Root_Element>
</Email_Mod_Root>
Anyone, pls suggest.
Thanks in advance,
SG_SOAFirst of all :
<inp1:Email_Mod_Root>
<Email_Mod_Root_Element>
<Email_Record1>
<PERSON_NUMBER>123456</PERSON_NUMBER>
<COUNTRY/>
<EMAIL_TYPE>WORK</EMAIL_TYPE>
<EMAIL>EMAIL3</EMAIL>
<PRIMARY_FLAG>Y</PRIMARY_FLAG>
</Email_Record1>
</Email_Mod_Root_Element>
</Email_Mod_Root>
isn't valid xml (you start with inp1: prefix and you end the tag with no prefix, but let's assume you don't want any prefix/namespace at all)
if i use :
[code]
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:inp1="http://www.example.org" exclude-result-prefixes="inp1">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:template match="*">
<xsl:element name="{local-name(.)}">
<xsl:apply-templates select="@* | node()"/>
</xsl:element>
</xsl:template>
<xsl:template match="@*">
<xsl:attribute name="{local-name(.)}">
<xsl:value-of select="."/>
</xsl:attribute>
</xsl:template>
</xsl:stylesheet>
[/code]
i get this
[code]
<Email_Root_Element>
<Email_Record>
<EMPLID>EMPLID46</EMPLID>
<EMAIL>EMAIL48</EMAIL>
<E_ADDR_TYPE>E_ADDR_TYPE49</E_ADDR_TYPE>
<COUNTRY>US</COUNTRY>
</Email_Record>
<Email_Record>
<EMPLID>EMPLID47</EMPLID>
<EMAIL>EMAIL49</EMAIL>
<E_ADDR_TYPE>E_ADDR_TYPE50</E_ADDR_TYPE>
<COUNTRY>US</COUNTRY>
</Email_Record>
<Email_Record>
<EMPLID>EMPLID48</EMPLID>
<EMAIL>EMAIL49</EMAIL>
<E_ADDR_TYPE>E_ADDR_TYPE51</E_ADDR_TYPE>
<COUNTRY>US</COUNTRY>
</Email_Record>
</Email_Root_Element>
[/code] -
Able to su from root to ldap accounts but account passwords come back as incorrect otherwise?
Hi,
I've installed DSEE 11.1.1.7.2 and I set up a few test ldap clients, Solaris 10, Solaris 11, and Oracle Linux. From root on any of these boxes I can su to the ldap accounts but if I try to ssh or su - from one test account to another I get a incorrect password.
I also have a test Sun 7.0 Directory Server running and using the same Solaris 10 client I can do a ldapinit to it and authenticate fine with the test accounts. I'm using the same scripts to create accounts and passwords on both versions. I looked through the default password policies between the two and don't see any differences and I'm not getting anything showing up in the logs. Has anyone seen this type of issue before?
ThanksHello,
This post http://serverfault.com/questions/576265/solaris-pam-ldap-authentication-using-sshd-kbdint-and-failing might be useful.
-Sylvain
Please mark the response as helpful or correct when appropriate to make it easier for others to find it -
Building jtree from database query
I am trying to build a JTREE from a database result-set. The resultset is listed below. I'm thinking I can somehow build a dynamic array of objects to build a TreePath, then use that to build the JTREE. Any input is appreciated.
ResultSet Output:
Here is how the results would be retrieved from the database (including the order of the output).
usr 1
local 2
sbin 2 file4
bin 3 file1
bin 3 file2
logs 3 file3
tmpdir 4
The first column is the directory name, the second column is the directory/file level/position, and the third column is the filename, if one exists.
So from above:
/usr/local/sbin has file "file4"
/usr/local/bin has files "file1" and "file2"
/usr/local/logs has file "file3" and directory "tmpdir"
How could I gather this information into an appropriate structure and create a JTREE from it.
Thanks.
-JimSo each line would:basically...
If I don't know the entire path of the parent (because I've read in a
line that only has the "one-up" parent name) .... However, when I
read the line from the database result-set, I don't know where "local" is.See... that's another problem with that data. Maybe you know cuz it's the last node if it's all in a proper order. In which case maybe you only need to hold the last parent node... Some recursive function would be useful.
If I were going to store the data, I would store either the name as a full path:
/usr
/usr/local
/usr/loca/bin
or
usr /
local /usr
bin /usr/local
If you have that, it might be easier to figure out without having to worry about what belongs where. -
I am trying to redirect to the welcome page from ROOT. When www.mydomain.com is called from a browser, the servlet inside ROOT should redirect to another web page in webapps/welcome/index.jsp
What I did:
com.index.Redirect
public class Redirect extends HttpServlet
private final String url = "welcome/index.jsp";
public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
response.sendRedirect(url);
}web.xml:
<servlet>
<servlet-name>Index</servlet-name>
<servlet-class>com.index.Redirect</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Index</servlet-name>
<url-pattern>/index</url-pattern>
</servlet-mapping>What I got: The requested resource (/) is not available
What am I missing? Thanks"/" is not the same as "/index". The mapping from / to /index is done on the server side, not the client, so you can't assume that every hit will start with at least /index. Also if I recall correctly / has a special meaning in servlet environment configurations and may not behave as expected.
Generally (or always?) web servers and I believe servlet containers have a special configuration option to identify a home page, so be careful that you're not reinventing the wheel here. -
Checking delete datafile's log from oracle i.e. deleted from root user.
Can any body help me finding the log for checking any trace for datafiles that are deleted from root user in hp-ux server ( and the sys log has alredy been modified by root user ).
So is there is any way to check through database or server level to check the trace of deleted datafiles files log.user13390258 wrote:
Thanks, In our project we are using finace 7 application and as it does't support hot backup so we are doing cold backup of database. Through HP RSM software. And we do not have RMAN backup also. Actually i am not geeting proof to show that file has been deleted from ROOT user.I don't know what a "finace 7" application is, but your assertion that it doesn't support a hot backup makes no sense. A backup of the database, and how it is accomplished, should be of no concern to the app.
As for your statement "we don not have RMAN backup also" ... well, it looks like now you are seeing the cost of that decision. One would hope that once you get through this crisis you would take it upon yourself to institute proper database backups, because - as the dBA - your first and most important job is to insure the security of the database. I never depend on any backup scheme anyone else claims to have in place. If they want to do something they claim will backup the database, fine. But I know that when the excrement hits the ventilation system, it's MY butt on the line to recover the database, so I am d*** well going to be taking rman backups. -
Hi all,
Is there any restriction on Mac OS X 10.6/10.7 that binaries running from root directories like /usr/libexec/ cannot load dylib's at run-time using dlopen() or NSAddImage()?
I am trying to run a binary like "sample" from a directory inside /usr/libexec/ which tries to load a dylib like "sample.dylib" which is present in the same directory as "sample".
It resulted in a segmentation fault with the following error and stack-trace.
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000003430
0x0000000000003430 in ?? ()
Using gdb, I could find out that the program crashed inside dlopen() (the path passed to dlopen() being a simple filename like "sample.dylib").
The dlopen() at the top of the stack-trace pasted below gets called around 10 times; it does not crash during this 2nd level dlopen() any-time.
#0 0x00007fff81be9e93 in dlopen ()
#1 0x00007fff82838f7f in map_images_nolock ()
#2 0x00007fff82821bc0 in map_images ()
#3 0x00007fff5fc039b9 in __dyld__ZN4dyldL18notifyBatchPartialE17dyld_image_statesbPFPKcS0_jPK15dyld_imag e_infoE ()
#4 0x00007fff5fc0c839 in __dyld__ZN11ImageLoader4linkERKNS_11LinkContextEbbRKNS_10RPathChainE ()
#5 0x00007fff5fc04d48 in __dyld__ZN4dyld4linkEP11ImageLoaderbRKNS0_10RPathChainE ()
#6 0x00007fff5fc08f68 in __dyld_dlopen ()
#7 0x00007fff81be9ec0 in dlopen ()
#8 0x000000010002694f in AAA ()
#9 0x0000000100026730 in XXX ()
#10 0x0000000100026494 in YYY ()
#15 0x00000001000566a9 in main (argc=7, argv=0x7fff5fbff810) at ../../main.c:50
After this 2nd level dlopen() gets called 10-15 times, the stack will unwind from map_images_nolock () till __dyld_dlopen (). But when it tries to finish all the instructions inside __dyld_dlopen () and step out of it, the program crashes with the EXC_BAD_ACCESS signal.
Please find below the final stack-traces obtained during debugging when I put breakpoints for AAA() and dlopen() and went on stepping inside till the program crashed.
(gdb) bt
#0 0x00007fff5fc04d48 in __dyld__ZN4dyld4linkEP11ImageLoaderbRKNS0_10RPathChainE ()
#1 0x00007fff5fc08f68 in __dyld_dlopen ()
#2 0x00007fff81be9ec0 in dlopen ()
#3 0x000000010002694f in AAA ()
#4 0x0000000100026730 in XXX ()
#5 0x000000010002663c in YYY ()
#11 0x00000001000566a9 in main (argc=7, argv=0x7fff5fbff7f0) at main.c:50
(gdb) step
Single stepping until exit from function __dyld__ZN4dyld4linkEP11ImageLoaderbRKNS0_10RPathChainE,
which has no line number information.
0x00007fff5fc08f68 in __dyld_dlopen ()
(gdb) bt
#0 0x00007fff5fc08f68 in __dyld_dlopen ()
#1 0x00007fff81be9ec0 in dlopen ()
#2 0x000000010002694f in AAA ()
#3 0x0000000100026730 in XXX ()
#4 0x000000010002663c in YYY ()
#10 0x00000001000566a9 in main (argc=7, argv=0x7fff5fbff7f0) at ../../main.c:50
(gdb) step
Single stepping until exit from function __dyld_dlopen,
which has no line number information.
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000003430
0x0000000000003430 in ?? ()
To summarise:
For some reason, a user wants to install a product and its binaries under /usr/libexec/.
This binary tries to dynamically load a dylib using dlopen("sample.dylib", RTLD_LAZY | RTLD_LOCAL).
It looks like, the dynamic linker then opens dependent dylibs and runs module initialisers. Then crashes when returning (which sounds like a trashed stack).
Can anyone please tell me whether there is some OS-imposed restriction or OS bug which can explain this type of behaviour?
(Note: The crash does not occur if the binary and dylib are installed under a normal user's home directory and run from there.)
Many thanks,
VinayThe otool output for the binary and dylib are pasted below.
localhost:Latest dev$ otool -L /usr/libexec/Dipu/sample/sample
/usr/libexec/Dipu/sample/sample:
/System/Library/Frameworks/IOKit.framework/Versions/A/IOKit (compatibility version 1.0.0, current version 275.0.0)
/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 476.18.0)
/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 7.4.0)
/usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 111.1.4)
localhost:Latest dev$ otool -L /usr/libexec/Dipu/sample/sample.dylib
/usr/libexec/Dipu/sample/sample.dylib:
libProduct.dylib (compatibility version 1.0.0, current version 1.0.0)
/System/Library/Frameworks/Carbon.framework/Versions/A/Carbon (compatibility version 2.0.0, current version 136.0.0)
/System/Library/Frameworks/IOKit.framework/Versions/A/IOKit (compatibility version 1.0.0, current version 275.0.0)
/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 7.4.0)
/usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 111.1.4)
/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 476.18.0) -
Hi there, i have looked back through the forums and at the JTree tutorial, and i have seen people mention about constructing a JTree from a vector.i can do this from a DefaultMutableTreeNode but how can one construct a JTree from a vector?.i have also seen from the api that you can supply a vector as an argument for the JTree constructor, but how does the JTree construct the tree from thia particular vector?many thanks.
but how does the JTree construct the tree from thia particular vector?Take a look at the JTree source code.
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JTree from Hashtable: weird ordering
Need some help on this:
I am making a JTree from a Hashtable:
myJTree = new JTree(myHashtable);The elements are put in the hashtable in the right order, but they come out in the GUI all wrong, can't seem to see any logic behind the order.
The children are not supposed to be sorted alphabetically, but in the order I get from an XML file. They are put in the Hashtable one by one.
Any ideas?They are not sorted by key or value. But they are put in the hashtable in a specific order, the same order as they are in a XML file. And I need it to be in a data structure I can use to create a JTree.
I tried to put the items in a vector. The order was then correct. The problem is that I then loose info (<key, value>) from the hashtable. And I cant get more than one level in the tree from the JTree(vector) constructor.
So what do I do?
To make it more clear how my tree looks like:
___Root object _nr1 (object in xml)
|
|________Child (first subcomponent in xmll)
|
|________Child (second subcomponent in xmll)
|
|________Child(third subcomponent in xmll)
|
etc.
Its as simple as that -
hii all,
Does any one know hw to populate a Jtree from a database.pls hlep me with an example.
thanxHi there,
Im having exactly the same problem. If you find out, please let me know, and I will do the same for you.
Thanks
Simon
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