Hi, some comments below...
Oliver
Am 29.12.2011 11:02, schrieb M M:
Hi, I'm trying to use /_*Commons Configuration*_/ to parse an XML
configuration file and I'm having some troubles with the xpath syntax.
After a few tries I understood that I need to use the
XPathExpressionEngine, and i think that the problems I'm facing are due
to the xpath syntax I'm using.
Here is the xml file:
general-configuration
permissions
allowed-projects
project id=10020 key=TP1test project 1/project
project id=10021 key=TP2test project 2/project
project id=10022 key=TP3test project 3/project
/allowed-projects
allowed-groups
group id=xyz name=test group/
/allowed-groups
allowed-users
user id=zxy name=test user/
/allowed-users
/permissions
kpi-definition
project id=10020 key=DP
issue-type id=1 name=Bug
kpi id=1 name=t0 - t1 days=0 hours=0 minutes=10
transition id=1 name=a1/transition
transition id=2 name=b2/transition
/kpi
kpi id=2 name=t1 - t2 days=0 hours=1 minutes=0
transition id=3 name=c1/transition
transition id=4 name=d2/transition
/kpi
/issue-type
issue-type id=3 name=Task
kpi id=1 name=t0 - t1 days=0 hours=0 minutes=10
transition id=5 name=e/transition
transition id=6 name=f/transition
/kpi
kpi id=2 name=t1 - t2 days=0 hours=1 minutes=0
transition id=7 name=g/transition
transition id=8 name=h/transition
/kpi
/issue-type
/project
/kpi-definition
/general-configuration
And here is the code I wrote to try to understand how to get what i want
using the XPathExpressionEngine
private XMLConfiguration configurationFile;
configurationFile = new XMLConfiguration(/kpi_configuration.xml/);
configurationFile.setExpressionEngine(new XPathExpressionEngine());
DefaultExpressionEngine defaultEngine = new DefaultExpressionEngine();
defaultEngine.setPropertyDelimiter(///);
configurationFile.setExpressionEngine(defaultEngine);
*// using the default expression engine i get what i want, a list of the
// id attributes of the project tag (10020,10021,10022)*
ListString testList001 =
configurationFile.getList(/permissions/allowed-projects/project[@id]/);
for (IteratorString iterator = testList001.iterator();
iterator.hasNext();)
{
System.out.println(iterator.next());
}
configurationFile.setExpressionEngine(new XPathExpressionEngine());
*// using the xpath expression engine, and giving exactly the same path
to the getList method
// i get a completely different result! the list is made of the text
content of the tag
// (test project 1, test project 2, test project 3)*
ListString testList002 =
configurationFile.getList(/permissions/allowed-projects/project[@id]/);
for (IteratorString iterator = testList002.iterator();
iterator.hasNext();)
{
System.out.println(iterator.next());
}
Try the key permissions/allowed-projects/project/@id; the square
brackets are not needed for accessing attributes.
*// here I tried to use the xpath syntax [@attribute=value] to get into
a specific branch of the xml tree
// the expected result was at least a list of values, instead i get null
object*
ListString testList003 =
configurationFile.getList(/kpi-definition/project[@id=10020]/issue-type[@id=1]/transition/);
for (IteratorString iterator = testList003.iterator();
iterator.hasNext();)
{
System.out.println(iterator.next());
}
For this and the following example it may be necessary to quote the
values because they are strings, e.g.
kpi-definition/project[@id='10020']/issue-type[@id='1']/transition
*// here I tried to use the xpath syntax [@attribute=value] to get into
a specific branch of the xml tree
// the expected result was a single value instead i got a null object*
String testValue001 =
configurationFile.getString(/kpi-definition/project[@id=10020]/issue-type[@id=1]/transition[@name=a]/);
System.out.println(testValue001);
Many, many thanks in advance to everyone who can help me!
I really can't work it out (... and I have to :) ... )
MM
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