What tool can I use to substitute marked expressions in a string?
I know that there are several related tools in this area, but I'm not
sure from a superficial look exactly which one I need.
I just need to have a string with occurrences of substrings like
${foo}, and I need to be able to replace that with a value specified
at run time. I need to do this directly from Java, and I nee to be able
to specify both the variables (like foo) and what values will be
substituted for them.
I thought I would do this with JEXL, but that seems to just take a
string like foo and not ... Stuff ... ${foo} I imagine I could
do this semi-manually, by searching for ${.*} and processing the
contents. If there's no packaged way to do this already, I'll go down
that path.
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Re: What tool can I use to substitute marked expressions in a string?
On 2/28/07, Karr, David [EMAIL PROTECTED] wrote:
I know that there are several related tools in this area, but I'm not
sure from a superficial look exactly which one I need.
I just need to have a string with occurrences of substrings like
${foo}, and I need to be able to replace that with a value specified
at run time. I need to do this directly from Java, and I nee to be able
to specify both the variables (like foo) and what values will be
substituted for them.
I thought I would do this with JEXL, but that seems to just take a
string like foo and not ... Stuff ... ${foo} I imagine I could
do this semi-manually, by searching for ${.*} and processing the
contents. If there's no packaged way to do this already, I'll go down
that path.
-
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Have a look at Digester's org.apache.commons.digester.substitution
package. From the javadocs, it looks like MultiVariableExpander can
do what you're asking for.
Craig
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RE: What tool can I use to substitute marked expressions in a string?
That worked perfectly. Thanks, Craig.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Craig McClanahan
Sent: Wednesday, February 28, 2007 4:36 PM
To: Jakarta Commons Users List
Subject: Re: What tool can I use to substitute marked
expressions in a string?
On 2/28/07, Karr, David [EMAIL PROTECTED] wrote:
I know that there are several related tools in this area,
but I'm not
sure from a superficial look exactly which one I need.
I just need to have a string with occurrences of substrings like
${foo}, and I need to be able to replace that with a
value specified
at run time. I need to do this directly from Java, and I nee to be
able to specify both the variables (like foo) and what
values will
be substituted for them.
I thought I would do this with JEXL, but that seems to just take a
string like foo and not ... Stuff ... ${foo} I imagine I
could do this semi-manually, by searching for ${.*} and
processing
the contents. If there's no packaged way to do this
already, I'll go
down that path.
Have a look at Digester's org.apache.commons.digester.substitution
package. From the javadocs, it looks like
MultiVariableExpander can do what you're asking for.
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
