Re: Commons Config: Variable Interpolation
Hi Ronald,
I have not used ExprLookup myself, so I am not sure whether I am a big
help here.
Your declaration of the lookup seems to be correct, otherwise an
exception would be thrown by DefaultConfigurationBuilder.
A difference between your code and the example in the user's guide is
that in the latter the expression lookup is directly used in the file
read by DefaultConfigurationBuilder and not in one of the included
configuration files. For version 2.0 (which is work in progress) this
should be supported, but I am not sure whether this also works in 1.x.
I would recommend to start with a simple example first. Test whether you
can access the lookup directly in this xml file, e.g. by setting the
file name of a configuration source as demonstrated in the example. By
this you can find out the results of variable substitutions and compare
them with your expectations. Only if this works as expected, try again
to use the lookup in an included configuration source.
HTH
Oliver
Am 11.07.2014 17:27, schrieb DiFrango, Ronald (CONT):
Here's the full XML file:
?xml version=1.0 encoding=ISO-8859-1 ?
configuration
header
result /
lookups
lookup config-prefix=expr
config-class=org.apache.commons.configuration.interpol.ExprLookup
variables
variable name=net
value=Class:java.net.InetAddress /
/variables
/lookup
/lookups
/header
system /
properties fileName= example.properties listDelimiter=|
reloadingStrategy refreshDelay=1
config-class=org.apache.commons.configuration.reloading.FileChangedReloadingStrategy
/
/properties
/configuration
And the referenced properties file:
mobile.rest.host=${expr:$[net.localHost.hostName]}
Ron DiFrango
-Original Message-
From: Martin Gainty [mailto:mgai...@hotmail.com]
Sent: Friday, July 11, 2014 11:25 AM
To: Commons Users List
Subject: RE: Commons Config: Variable Interpolation
From: ronald.difra...@capitalone.com
To: user@commons.apache.org
Date: Fri, 11 Jul 2014 11:02:45 -0400
Subject: RE: Commons Config: Variable Interpolation
Just to complete it, the code looks like:
DefaultConfigurationBuilder factory = new
DefaultConfigurationBuilder(example.xml);
Configuration config = factory.getConfiguration();
MGno clue which properties are defined in example.xml so lets add a new
MGproperty called mobile.rest.host here
MGconfig.addProperty(mobile.rest.host, maps.google.com);
System.out.println(Host Name = +
config.getString(mobile.rest.host));
MG?
Ron DiFrango
-Original Message-
From: DiFrango, Ronald (CONT) [mailto:ronald.difra...@capitalone.com]
Sent: Friday, July 11, 2014 10:49 AM
To: user@commons.apache.org
Subject: Commons Config: Variable Interpolation
I'm attempting to perform Variable Interpolation as outlined here:
http://commons.apache.org/proper/commons-configuration/userguide/howto
_basicfeatures.html#Variable_Interpolation
I'm using an XML file as the starter so I added the following blurb to the
beginning of the file:
header
result /
lookups
lookup config-prefix=expr
config-class=org.apache.commons.configuration.interpol.ExprLookup
variables
variable name=net
value=Class:java.net.InetAddress /
/variables
/lookup
/lookups
/header
MG
override
xml mobileRestHost=String.lowercase(net.localHost.hostName)/xml
/override
MG?
And then in my properties file that is loaded I did:
mobile.rest.host=${expr:$[net.localHost.hostName]}
But it did not work any thoughts on what I'm doing wrong?
Thanks,
Ron
The information contained in this e-mail is confidential and/or proprietary
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Re: Commons Config: Variable Interpolation
On 7/12/14, 9:52 AM, Oliver Heger wrote:
Hi Ronald,
I have not used ExprLookup myself, so I am not sure whether I am a big
help here.
Your declaration of the lookup seems to be correct, otherwise an
exception would be thrown by DefaultConfigurationBuilder.
A difference between your code and the example in the user's guide is
that in the latter the expression lookup is directly used in the file
read by DefaultConfigurationBuilder and not in one of the included
configuration files. For version 2.0 (which is work in progress) this
should be supported, but I am not sure whether this also works in 1.x.
I would recommend to start with a simple example first. Test whether you
can access the lookup directly in this xml file, e.g. by setting the
file name of a configuration source as demonstrated in the example. By
this you can find out the results of variable substitutions and compare
them with your expectations. Only if this works as expected, try again
to use the lookup in an included configuration source.
I also have no experience using this feature, but IIUC you are
trying to use expr as a prefix. According to the doc, that is not
among the supported prefixes.
Phil
HTH
Oliver
Am 11.07.2014 17:27, schrieb DiFrango, Ronald (CONT):
Here's the full XML file:
?xml version=1.0 encoding=ISO-8859-1 ?
configuration
header
result /
lookups
lookup config-prefix=expr
config-class=org.apache.commons.configuration.interpol.ExprLookup
variables
variable name=net
value=Class:java.net.InetAddress /
/variables
/lookup
/lookups
/header
system /
properties fileName= example.properties listDelimiter=|
reloadingStrategy refreshDelay=1
config-class=org.apache.commons.configuration.reloading.FileChangedReloadingStrategy
/
/properties
/configuration
And the referenced properties file:
mobile.rest.host=${expr:$[net.localHost.hostName]}
Ron DiFrango
-Original Message-
From: Martin Gainty [mailto:mgai...@hotmail.com]
Sent: Friday, July 11, 2014 11:25 AM
To: Commons Users List
Subject: RE: Commons Config: Variable Interpolation
From: ronald.difra...@capitalone.com
To: user@commons.apache.org
Date: Fri, 11 Jul 2014 11:02:45 -0400
Subject: RE: Commons Config: Variable Interpolation
Just to complete it, the code looks like:
DefaultConfigurationBuilder factory = new
DefaultConfigurationBuilder(example.xml);
Configuration config = factory.getConfiguration();
MGno clue which properties are defined in example.xml so lets add a new
MGproperty called mobile.rest.host here
MGconfig.addProperty(mobile.rest.host, maps.google.com);
System.out.println(Host Name = +
config.getString(mobile.rest.host));
MG?
Ron DiFrango
-Original Message-
From: DiFrango, Ronald (CONT) [mailto:ronald.difra...@capitalone.com]
Sent: Friday, July 11, 2014 10:49 AM
To: user@commons.apache.org
Subject: Commons Config: Variable Interpolation
I'm attempting to perform Variable Interpolation as outlined here:
http://commons.apache.org/proper/commons-configuration/userguide/howto
_basicfeatures.html#Variable_Interpolation
I'm using an XML file as the starter so I added the following blurb to the
beginning of the file:
header
result /
lookups
lookup config-prefix=expr
config-class=org.apache.commons.configuration.interpol.ExprLookup
variables
variable name=net
value=Class:java.net.InetAddress /
/variables
/lookup
/lookups
/header
MG
override
xml mobileRestHost=String.lowercase(net.localHost.hostName)/xml
/override
MG?
And then in my properties file that is loaded I did:
mobile.rest.host=${expr:$[net.localHost.hostName]}
But it did not work any thoughts on what I'm doing wrong?
Thanks,
Ron
The information contained in this e-mail is confidential and/or proprietary
to Capital One and/or its affiliates. The information transmitted herewith
is intended only for use by the individual or entity to which it is
addressed. If the reader of this message is not the intended recipient,
you are hereby notified that any review, retransmission, dissemination,
distribution, copying or other use of, or taking of any action in reliance
upon this information is strictly prohibited. If you have received this
communication in error, please contact the sender and delete the material
from your computer.
The information contained
Commons Config: Variable Interpolation
I'm attempting to perform Variable Interpolation as outlined here:
http://commons.apache.org/proper/commons-configuration/userguide/howto_basicfeatures.html#Variable_Interpolation
I'm using an XML file as the starter so I added the following blurb to the
beginning of the file:
header
result /
lookups
lookup config-prefix=expr
config-class=org.apache.commons.configuration.interpol.ExprLookup
variables
variable name=net
value=Class:java.net.InetAddress /
/variables
/lookup
/lookups
/header
And then in my properties file that is loaded I did:
mobile.rest.host=${expr:$[net.localHost.hostName]}
But it did not work any thoughts on what I'm doing wrong?
Thanks,
Ron
The information contained in this e-mail is confidential and/or proprietary to
Capital One and/or its affiliates. The information transmitted herewith is
intended only for use by the individual or entity to which it is addressed. If
the reader of this message is not the intended recipient, you are hereby
notified that any review, retransmission, dissemination, distribution, copying
or other use of, or taking of any action in reliance upon this information is
strictly prohibited. If you have received this communication in error, please
contact the sender and delete the material from your computer.
RE: Commons Config: Variable Interpolation
Here's the full XML file:
?xml version=1.0 encoding=ISO-8859-1 ?
configuration
header
result /
lookups
lookup config-prefix=expr
config-class=org.apache.commons.configuration.interpol.ExprLookup
variables
variable name=net
value=Class:java.net.InetAddress /
/variables
/lookup
/lookups
/header
system /
properties fileName= example.properties listDelimiter=|
reloadingStrategy refreshDelay=1
config-class=org.apache.commons.configuration.reloading.FileChangedReloadingStrategy
/
/properties
/configuration
And the referenced properties file:
mobile.rest.host=${expr:$[net.localHost.hostName]}
Ron DiFrango
-Original Message-
From: Martin Gainty [mailto:mgai...@hotmail.com]
Sent: Friday, July 11, 2014 11:25 AM
To: Commons Users List
Subject: RE: Commons Config: Variable Interpolation
From: ronald.difra...@capitalone.com
To: user@commons.apache.org
Date: Fri, 11 Jul 2014 11:02:45 -0400
Subject: RE: Commons Config: Variable Interpolation
Just to complete it, the code looks like:
DefaultConfigurationBuilder factory = new
DefaultConfigurationBuilder(example.xml);
Configuration config = factory.getConfiguration();
MGno clue which properties are defined in example.xml so lets add a new
MGproperty called mobile.rest.host here
MGconfig.addProperty(mobile.rest.host, maps.google.com);
System.out.println(Host Name = +
config.getString(mobile.rest.host));
MG?
Ron DiFrango
-Original Message-
From: DiFrango, Ronald (CONT) [mailto:ronald.difra...@capitalone.com]
Sent: Friday, July 11, 2014 10:49 AM
To: user@commons.apache.org
Subject: Commons Config: Variable Interpolation
I'm attempting to perform Variable Interpolation as outlined here:
http://commons.apache.org/proper/commons-configuration/userguide/howto
_basicfeatures.html#Variable_Interpolation
I'm using an XML file as the starter so I added the following blurb to the
beginning of the file:
header
result /
lookups
lookup config-prefix=expr
config-class=org.apache.commons.configuration.interpol.ExprLookup
variables
variable name=net
value=Class:java.net.InetAddress /
/variables
/lookup
/lookups
/header
MG
override
xml mobileRestHost=String.lowercase(net.localHost.hostName)/xml
/override
MG?
And then in my properties file that is loaded I did:
mobile.rest.host=${expr:$[net.localHost.hostName]}
But it did not work any thoughts on what I'm doing wrong?
Thanks,
Ron
The information contained in this e-mail is confidential and/or proprietary
to Capital One and/or its affiliates. The information transmitted herewith is
intended only for use by the individual or entity to which it is addressed.
If the reader of this message is not the intended recipient, you are hereby
notified that any review, retransmission, dissemination, distribution,
copying or other use of, or taking of any action in reliance upon this
information is strictly prohibited. If you have received this communication
in error, please contact the sender and delete the material from your
computer.
The information contained in this e-mail is confidential and/or proprietary
to Capital One and/or its affiliates. The information transmitted herewith is
intended only for use by the individual or entity to which it is addressed.
If the reader of this message is not the intended recipient, you are hereby
notified that any review, retransmission, dissemination, distribution,
copying or other use of, or taking of any action in reliance upon this
information is strictly prohibited. If you have received this communication
in error, please contact the sender and delete the material from your
computer.
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intended only for use by the individual or entity to which it is addressed. If
the reader of this message is not the intended recipient, you are hereby
notified that any review
RE: Commons Config: Variable Interpolation
95
before document = dBuilder.parse(fXmlFile));
this.document = dBuilder.parse(fXmlFile);
this.document.getDocumentElement().normalize();
}
System.out.println(CommonsConfigurationTest::test() LINE 98
document= + this.document );
//rootNode = config.getRoot();
//System.out.println(CommonsConfigurationTest::getRootNode() LINE
37 rootNode = + rootNode);
//System.out.println(CommonsConfigurationTest::getRootElementNode()
LINE 101 getRootElementName()=+config.getRootElementName());
//rootNodeList = rootNode.getChildNodes();
//System.out.println(CommonsConfigurationTest::getRootElementNode()
rootNodeList = +rootNodeList);
//System.out.println(CommonsConfigurationTest::getRootElementNode()
rootNodeList length = +rootNodeList.getLength());
System.out.println(CommonsConfigurationTest::getRootElementNode()
LINE 108 Root element : + this.document.getDocumentElement().getNodeName());
//test for ron
System.out.println(CommonsConfigurationTest:test LINE 108 document
= +this.document);
configurationList =
this.document.getElementsByTagName(configuration);
System.out.println(CommonsConfigurationTest::test Object
config.getProperty(configuration) = +configurationList.item(0) );
headerList = this.document.getElementsByTagName(header);
System.out.println(CommonsConfigurationTest::test LINE 36
header.length=+headerList.getLength());
System.out.println(CommonsConfigurationTest::test LINE 36
header=+headerList.item(0));
lookupsList = this.document.getElementsByTagName(lookups);
System.out.println(CommonsConfigurationTest::test LINE 36
header.lookups=+lookupsList.item(0) );
lookupList = this.document.getElementsByTagName(lookup);
System.out.println(CommonsConfigurationTest::test LINE 36
header.lookups.lookup with / +lookupList.item(0) );
variablesList = this.document.getElementsByTagName(variables);
System.out.println(CommonsConfigurationTest::test LINE 89 variables
lookup = +variablesList.item(0) );
variableList = this.document.getElementsByTagName(variable);
System.out.println(CommonsConfigurationTest::test LINE 38 variable
length+variableList.getLength() );
org.w3c.dom.Node valueNode = variableList.item(0);
if (valueNode.getNodeType() == org.w3c.dom.Node.ELEMENT_NODE)
{
org.w3c.dom.Element eElement = (org.w3c.dom.Element)
valueNode;
System.out.println(id : +
eElement.getAttribute(id));
//org.w3c.dom.NodeList nodeList =
eElement.getElementsByTagName(value);
//System.out.println(CommonsConfigurationTest::test
LINE 135 nodeList=+nodeList);
System.out.println(value : +
eElement.getAttribute(value) );
//org.w3c.dom.Node node = nodeList.item(0);
//System.out.println(CommonsConfigurationTest::test
LINE 135 node=+node);
//org.w3c.dom.NamedNodeMap map = node.getAttributes();
//System.out.println(value : +
map.getNamedItem(value) ); //node.getTextContent());
}
props.load( new
java.io.FileInputStream(C:/temp/example.properties) );
System.out.println(CommonsConfigurationTest::test LINE 39
(config.getProperty) properties.reloadingStrategy =+
props.getProperty(mobile.rest.host) );
}
catch (Exception e) {
System.out.println(CommonsConfigurationTest::test LINE 55 has
thrown Exception message=+e.getMessage());
e.printStackTrace();
fail(e.getMessage());
}
}
}
From: ronald.difra...@capitalone.com
To: user@commons.apache.org
Date: Fri, 11 Jul 2014 11:27:14 -0400
Subject: RE: Commons Config: Variable Interpolation
Here's the full XML file:
?xml version=1.0 encoding=ISO-8859-1 ?
configuration
header
result /
lookups
lookup config-prefix=expr
config-class=org.apache.commons.configuration.interpol.ExprLookup
variables
variable name=net
value=Class:java.net.InetAddress /
/variables
/lookup
/lookups
/header
system /
properties fileName= example.properties listDelimiter=|
reloadingStrategy refreshDelay=1
config-class=org.apache.commons.configuration.reloading.FileChangedReloadingStrategy
/
/properties
/configuration
And the referenced properties file:
mobile.rest.host=${expr:$[net.localHost.hostName]}
Ron DiFrango
-Original
