[jboss-dev-forums] [Design of JBoss jBPM] - Variables in Mail Templates
Hi everyone
I have tuned up a little the usage of variables in Mail Templates.
usually when you want to use a variable like that
| <mail-templates>
|
| <variable name="defaultSubject" value="Mail" />
|
| <mail-template name='default'>
| <actors>#{taskInstance.actorId}</actors>
| <subject>#{defaultSubject}</subject>
| <text><![CDATA[Mail von Geppi:
| #{mailMessage}]]>
| </text>
| </mail-template>
|
the variable is evaluated correctly and the value of Subject is set to "Mail"
but if you want to use variable references within the variables like this
| <mail-templates>
|
| <variable name="defaultSubject" value="[#{processDefinition.name}
#{processInstance.id}] generated Mail" />
|
| <mail-template name='default'>
| <actors>#{taskInstance.actorId}</actors>
| <subject>#{defaultSubject}</subject>
| <text><![CDATA[Mail von Geppi:
| #{mailMessage}]]>
| </text>
| </mail-template>
|
the value within the variable is not evaluated.
So i added a loop which evaluates the variable value until all references are solved.
In class org.jbpm.mail.Mail:
| public String getSubject() {
| if (subject==null) return null;
| Object parsedValue = null;
| String ret = subject;
| do {
| ret = evaluate(ret);
| ret = JbpmExpressionEvaluator.translateExpressionToDollars(ret);
| parsedValue = new ExpressionEvaluatorImpl().parseExpressionString(ret);
| } while (!(parsedValue instanceof String));
|
| return ret;
| }
|
| public String getText() {
| if (text==null) return null;
| Object parsedValue = null;
| String ret = text;
| do {
| ret = evaluate(ret);
| ret = JbpmExpressionEvaluator.translateExpressionToDollars(ret);
| parsedValue = new ExpressionEvaluatorImpl().parseExpressionString(ret);
| } while (!(parsedValue instanceof String));
|
| return ret;
| }
|
i will post a Jira Patch for this too
regards
Matthias
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