David Obber created GROOVY-9048:
-----------------------------------
Summary: Replacing a Groovy XML Node causes problems in
subsequents findAll calls
Key: GROOVY-9048
URL: https://issues.apache.org/jira/browse/GROOVY-9048
Project: Groovy
Issue Type: Bug
Components: XML Processing
Affects Versions: 3.x, 2.5.x
Environment: Windows/JDK 8
Reporter: David Obber
I use groovy to parse a XML file using XmlParser. Just to avoid the handling of
namespace prefixes, I used xmlRoot.'**'.findAll() method to find some nodes.
The sample code shows how it works correctly until I just read the nodes,
because each item passed to the closure is a Node object. But when I change the
contents of a node (in this case, just the text of the node), the next call to
findAll does not iterate on Node objects. For each character I put in the text,
a String object is passed to the closure. I solved it checking the type with
instanceof, but it seems to be that this is a bug.
Am I doing something wrong or it's a bug?
class XmlParserTest {
static final String XML_SAMPLE = """
<ns0:root>
<ns0:firstParent>
<ns0:item1>uppercase_me!</ns0:item1>
</ns0:firstParent>
<ns0:secondParent>
<ns0:item2>uppercase_me_too!/ns0:item2>
</ns0:secondParent>
</ns0:root>
"""
static void main(String[] args) {
def xmlRoot = new XmlParser(false, false).parseText(XML_SAMPLE)
//******* find item1 and capitalize its text ********
def nds1 = xmlRoot.'**'.findAll {
it.name().equals("ns0:item1")
}
Node nd1 = nds1[0]
//This changes the text of the node, but something strange happens
to the node tree
nd1.setValue(nd1.value().toString().toUpperCase())
//The same problem happens using replaceNode() instead of setValue()
//Node newNode = new Node(nd1.parent(), nd1.name(),
nd1.value().toString().toUpperCase())
//nd1.replaceNode(newNode)
//******* find item2 and capitalize its text ********
def nds2 = xmlRoot.'**'.findAll {
//for each character in the string "uppercase me!" a String is
passed instead of Node
//As String doesn't have a name method, an exception is raised
it.name().equals("ns0:item2")
//using instanceof fixes the problem, at least for this case
it instanceof Node && it.name().equals("ns0:item2")
}
Node nd2 = nds2[0]
nd2.setValue(nd2.value().toString().toUpperCase())
assert nd1.value().toString() ==
nd1.value().toString().toUpperCase()
assert nd2.value().toString() ==
nd2.value().toString().toUpperCase()
}
}
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