You need to preallocate space in your List for the max number of items
you will have. Alternatively you can use the LazyList stuff from
BeanUtils -- or you can write a "smart" set method that allocates space
on the list if needed.
Bharathiraja wrote:
hi everybody,
In my application, i am having multilines with facility for adding multiline dynamically .I representing those fields through nested tags.These tag gets set through array of Objects.
So in this scenario how can i validate my multiline fields.
if i add new row and try to save it ,it throws exception in
populating saying IndexOutOfBound.
Please anybody help me to get rid of this problem.
Please give me suggestion whether my Form Bean and Jsp is correct for my
requirement.
FormBean
---------------
private List multilineObjects=getObjects();
public void setMultilineObjects(List multilineObjects){
this.multilineObjects=multilineObjects;
}
public List getMultilineObjects(){
return multilineObjects;
}
public List getObjects(){
BusinessObject businessObjects=new BusinessObject();
ArrayList listOfObjects=null;
try{
listOfObjects= businessObjects.getOnLoadObjects();
}catch(Exception e){
e.printStackTrace();
}
return listOfObjects;
}
}
MyJSP
---------
<nested:iterate id="lineElement" property="multilineObjects" scope="request" >
<tr>
<td width="20%">
<nested:text property="moduleName" style="width:99%" styleClass="LinesTextboxFont"
/>
<nested:hidden name="lineElement" property="moduleId" />
</td>
<td width="21%" >
<nested:text readonly="true" property="shortName" style="width:99%" styleClass="LinesTextboxFont"/>
</td>
<td width="20%" >
<nested:text property="directory" style="width:99%" styleClass="LinesTextboxFont"/>
</td>
<td width="21%">
<nested:text property="startDate" style="width:99%" styleClass="LinesTextboxFont"/>
</td>
<td width="20%">
<nested:text property="endDate" style="width:99%" styleClass="LinesTextboxFont"/>
<nested:hidden property="whoColumn" />
</td>
</tr>
</nested:iterate>
MyValidation.xml
--------------------------
<form name="MultiLineForm" >
<field property="moduleName" indexedListProperty="echainModule" depends="required" >
<arg0 key="key.label.module" />
</field>
</form>
Exception Details
--------------------------
java.lang.IndexOutOfBoundsException: Index: 25, Size: 24
at java.util.ArrayList.RangeCheck(ArrayList.java:508)
at java.util.ArrayList.get(ArrayList.java:320)
at
org.apache.commons.beanutils.PropertyUtils.getIndexedProperty(PropertyUtils.java:521)
at
org.apache.commons.beanutils.PropertyUtils.getIndexedProperty(PropertyUtils.java:428)
at org.apache.commons.beanutils.PropertyUtils.getNestedProperty(PropertyUtils.java:770)
at org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:801)
at org.apache.commons.beanutils.BeanUtils.setProperty(BeanUtils.java:881)
at org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:808)
at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:1252)
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