You are viewing a plain text version of this content. The canonical link for it is here.
Posted to ecs-dev@jakarta.apache.org by "Mauro Manfrin (JIRA)" <ji...@apache.org> on 2008/07/29 11:18:32 UTC
[jira] Reopened: (ECS-1) addElement(Element element) methods can
fail
[ https://issues.apache.org/jira/browse/ECS-1?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mauro Manfrin reopened ECS-1:
-----------------------------
Perfect, thank you...I really don't want to disturb you...
but some important adjustings are missing:
Here is the list:
org.apache.ecs.rtf.Alignment.java fails because removeElementFromRegistry uses element hascode to remove an element. The patch is:
# This patch file was generated by NetBeans IDE
Index: Alignment.java
--- Alignment.java Base (BASE)
+++ Alignment.java Locally Modified (Based On LOCAL)
@@ -131,7 +131,7 @@
*/
public Element removeElementFromRegistry(Element element)
{
- type.removeElementFromRegistry(Integer.toString(element.hashCode()));
+ type.removeElementFromRegistry(element);
return(type);
}
org.apache.ecs.StringElement.java continues to fail beacuse still uses hashcodes! The patch is:
# This patch file was generated by NetBeans IDE
Index: StringElement.java
--- StringElement.java Base (BASE)
+++ StringElement.java Locally Modified (Based On LOCAL)
@@ -105,7 +105,7 @@
*/
public StringElement addElement(String element)
{
- addElement(Integer.toString(element.hashCode()),element);
+ addElementToRegistry(element);
return(this);
}
org.apache.ecs.html.Caption.java continues to fail beacuse still uses hashcodes! The patch is:
# This patch file was generated by NetBeans IDE
Index: Caption.java
--- Caption.java Base (BASE)
+++ Caption.java Locally Modified (Based On LOCAL)
@@ -77,7 +77,7 @@
*/
public Caption addElement(String element)
{
- addElementToRegistry(Integer.toString(element.hashCode()),element);
\ No newline at end of file
+ addElementToRegistry(element);
\ No newline at end of file
return(this);
}
org.apache.ecs.html.Select.java now uses a deprecated (and expensive) way of iterating on elements. The patch is:
# This patch file was generated by NetBeans IDE
Index: Select.java
--- Select.java Base (BASE)
+++ Select.java Locally Modified (Based On LOCAL)
@@ -177,10 +177,10 @@
public Select selectOption(int option)
{
- Enumeration enum_ = keys();
+ Enumeration enum_ = elements();
for(int x = 0; enum_.hasMoreElements(); x++)
{
- ConcreteElement element = (ConcreteElement)getElement((String)enum_.nextElement());
+ ConcreteElement element = (ConcreteElement)enum_.nextElement();
if(x == option)
{
((Option)element).setSelected(true);
org.apache.ecs.xhtml.caption.java continues to fail beacuse still uses hashcodes! The patch is:
# This patch file was generated by NetBeans IDE
Index: caption.java
--- caption.java Base (BASE)
+++ caption.java Locally Modified (Based On LOCAL)
@@ -91,7 +91,7 @@
*/
public caption addElement(String element)
{
- addElementToRegistry(Integer.toString(element.hashCode()),element);
+ addElementToRegistry(element);
return(this);
}
Thank you in advance.
Mauro
> addElement(Element element) methods can fail
> --------------------------------------------
>
> Key: ECS-1
> URL: https://issues.apache.org/jira/browse/ECS-1
> Project: ECS
> Issue Type: Bug
> Environment: in Ibm Virtual Machines, but probabily also in Sun Virtual Machines
> Reporter: Mauro Manfrin
> Assignee: Robert Burrell Donkin
> Priority: Critical
> Attachments: ecs-maintrunk-patches.zip, secondConcreteElement.zip
>
>
> The class ConcreteElement exposes a method
> addElement(Element element)
> that calls
> addElementToRegistry(Integer.toString(element.hashCode()),element);
> so it gives a key valued element.hashCode() to that element.
> That's the point: element.hashCode() can't be a unique key because sometimes we can have two elements with the same hasocode.
> javadoc states:
> "It is not required that if two objects are unequal according to the
> equals(java.lang.Object) method, then calling the hashCode method on each of
> the two objects must produce distinct integer results. However, the
> programmer should be aware that producing distinct integer results for
> unequal objects may improve the performance of hashtables."
> So sometimes, two different objects can have the same hashCode!
> So, sometimes two calls to addElement(element) can result in only the second
> object stored in the ConcreteElement.
> So sometimes, on out instalaltion some table rows misses, or some row cells
> misses or...
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
---------------------------------------------------------------------
To unsubscribe, e-mail: ecs-dev-unsubscribe@jakarta.apache.org
For additional commands, e-mail: ecs-dev-help@jakarta.apache.org