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="TP1">test project 1</project>
<project id="10021" key="TP2">test project 2</project>
<project id="10022" key="TP3">test 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="a">1</transition>
<transition id="2" name="b">2</transition>
</kpi>
<kpi id="2" name="t1 - t2" days="0" hours="1" minutes="0">
<transition id="3" name="c">1</transition>
<transition id="4" name="d">2</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)*
List<String> testList001 =
configurationFile.getList(/"permissions/allowed-projects/project[@id]"/);
for (Iterator<String> 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)*
List<String> testList002 =
configurationFile.getList(/"permissions/allowed-projects/project[@id]"/);
for (Iterator<String> 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*
List<String> testList003 =
configurationFile.getList(/"kpi-definition/project[@id=10020]/issue-type[@id=1]/transition"/);
for (Iterator<String> 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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