Re: [configuration] XPathExpressionEngine - xpath syntax
Oliver, thank you very much!
The first hint is working perfectly.
Unfortunately the second change didn't solve the problem, I'm still
getting null objects although I added the quotes...
I keep on doing tests, maybe I'll find the good syntax.
Thank you very much again!
Bye
MM
On 29/12/2011 21.27, Oliver Heger wrote:
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:
test project 1
test project 2
test project 3
1
2
1
2
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 testList001 =
configurationFile.getList(/"permissions/allowed-projects/project[@id]"/);
for (Iterator 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 testList002 =
configurationFile.getList(/"permissions/allowed-projects/project[@id]"/);
for (Iterator 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 testList003 =
configurationFile.getList(/"kpi-definition/project[@id=10020]/issue-type[@id=1]/transition"/);
for (Iterator 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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Re: [configuration] XPathExpressionEngine - xpath syntax
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:
test project 1
test project 2
test project 3
1
2
1
2
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 testList001 =
configurationFile.getList(/"permissions/allowed-projects/project[@id]"/);
for (Iterator 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 testList002 =
configurationFile.getList(/"permissions/allowed-projects/project[@id]"/);
for (Iterator 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 testList003 =
configurationFile.getList(/"kpi-definition/project[@id=10020]/issue-type[@id=1]/transition"/);
for (Iterator 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
-
To unsubscribe, e-mail: user-unsubscr...@commons.apache.org
For additional commands, e-mail: user-h...@commons.apache.org
[configuration] XPathExpressionEngine - xpath syntax
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:
test project 1
test project 2
test project 3
1
2
1
2
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 testList001 =
configurationFile.getList(/"permissions/allowed-projects/project[@id]"/);
for (Iterator 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 testList002 =
configurationFile.getList(/"permissions/allowed-projects/project[@id]"/);
for (Iterator iterator = testList002.iterator();
iterator.hasNext();)
{
System.out.println(iterator.next());
}
*// 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 testList003 =
configurationFile.getList(/"kpi-definition/project[@id=10020]/issue-type[@id=1]/transition"/);
for (Iterator iterator = testList003.iterator();
iterator.hasNext();)
{
System.out.println(iterator.next());
}
*// 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
