[jira] [Created] (JEXL-139) Loop over an iterable, evalaute and expression per row, and return concatenated results
Manoj Mokashi created JEXL-139:
--
Summary: Loop over an iterable, evalaute and expression per row,
and return concatenated results
Key: JEXL-139
URL: https://issues.apache.org/jira/browse/JEXL-139
Project: Commons JEXL
Issue Type: New Feature
Reporter: Manoj Mokashi
Priority: Minor
Code below.
/**
* Iterates over the iterable represented by iterExpression
* For each row, evaluate the row-expression
* Return a string of all row-results, concatenated by separator.
* The current current row is indicated by $$__EVAL_ROW and the current
index by $$__EVAL_ROWNUM
* @param enumExpression
* @param expression
* @return
*/
public String evalExprOverIter( String iterExpression, String
rowExpression, String separator){
Object objIter = evalExpr( iterExpression);
if( objIter == null ){ return "";}
Iterable iterabl = null;
if( objIter.getClass().isArray()){
iterabl = Arrays.asList( (Object[]) objIter );
}
else if( objIter instanceof Map){
iterabl = ((Map) objIter).entrySet();
}
else {
iterabl = (Iterable) objIter;
}
Iterator iter = iterabl.iterator();
StringBuilder sbld = new StringBuilder();
int rownum = 0;
while( iter.hasNext()){
Object row = iter.next();
setVar( "$$__EVAL_ROW", row );
setVar( "$$__EVAL_ROWNUM", rownum );
sbld.append( evalExpr( rowExpression) );
sbld.append( separator );
rownum++;
}
// remove the temp variables we used.
remVar( "$$__EVAL_ROWNUM" );
remVar( "$$__EVAL_ROW" );
return sbld.deleteCharAt( sbld.length()-1).toString();
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[jira] [Commented] (JEXL-134) Issue with evaluation of concat of variables : \r + \n gives 0
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https://issues.apache.org/jira/browse/JEXL-134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13404897#comment-13404897
]
Manoj Mokashi commented on JEXL-134:
Hi Henri, thanks for the quick resolution :)
> Issue with evaluation of concat of variables : \r + \n gives 0
> --
>
> Key: JEXL-134
> URL: https://issues.apache.org/jira/browse/JEXL-134
> Project: Commons JEXL
> Issue Type: Bug
>Affects Versions: 2.1.1
> Environment: Windows Xp, jdk1.6.0_14
>Reporter: Manoj Mokashi
>Assignee: Henri Biestro
> Fix For: 2.1.2
>
>
> Consider the following example :
> String jexlExp = "$$__INPUT + nl";
> Expression e = jexl.createExpression( jexlExp );
> // Create a context and add data
> JexlContext jc = new MapContext();
> jc.set("$$__INPUT", "\r" );
> jc.set("nl", "\n");
> // Now evaluate the expression, getting the result
> Object o = e.evaluate(jc);
> The result is 0 instead of "\r\n"
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[jira] [Created] (JEXL-134) Issue with evaluation of concat of variables : \r + \n gives 0
Manoj Mokashi created JEXL-134:
--
Summary: Issue with evaluation of concat of variables : \r + \n
gives 0
Key: JEXL-134
URL: https://issues.apache.org/jira/browse/JEXL-134
Project: Commons JEXL
Issue Type: Bug
Affects Versions: 2.1.1
Environment: Windows Xp, jdk1.6.0_14
Reporter: Manoj Mokashi
Consider the following example :
String jexlExp = "$$__INPUT + nl";
Expression e = jexl.createExpression( jexlExp );
// Create a context and add data
JexlContext jc = new MapContext();
jc.set("$$__INPUT", "\r" );
jc.set("nl", "\n");
// Now evaluate the expression, getting the result
Object o = e.evaluate(jc);
The result is 0 instead of "\r\n"
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