Hi all,
I want to know how it is possible to init an empty array.
In my case, I am using XPath to specify a location into a xml tree to
set a value.
Let me explain you :
I have a bookstore with a set of books.
Books are not yet initialized. I want to set the book at the index number 2.
the xpath expression is :
/bookstore/books[2]
In fact I am using the following java code :
context.createPathAndSetValue(myQuery,value);
I get the following exception :
Caused by: org.apache.commons.jxpath.JXPathException: Exception trying
to create xpath /bookstore/book[2]; Cannot access property: books;
java.lang.NullPointerException
at
org.apache.commons.jxpath.ri.JXPathContextReferenceImpl.createPathAndSetValue(JXPathContextReferenceImpl.java:469)
at
org.apache.commons.jxpath.ri.JXPathContextReferenceImpl.createPathAndSetValue(JXPathContextReferenceImpl.java:457)
Can you tell if there is a workaround or what I am doing wrong ?
Thanks,
Charles
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