HaveDaemon (Daemon property): Difference between revisions
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<var>HaveDaemon</var> returns a <var>[[Boolean enumeration]]</var> that indicates whether the daemon thread associated with the <var>[[Daemon class|Daemon]]</var> method object is accessible. | |||
HaveDaemon | ==Syntax== | ||
{{Template:Daemon:HaveDaemon syntax}} | |||
===Syntax terms=== | |||
<table class="syntaxTable"> | |||
<tr><th>%boolean</th> | |||
<td>A <var>Boolean</var> enumeration to contain the returned value of <var>HaveDaemon</var>. | |||
<p><var>HaveDaemon</var> returns <code>True</code> unless the daemon thread logged off, for whatever reason.</p> </td></tr> | |||
<tr><th>daemon</th> | |||
<td>A <var>Daemon</var> object.</td></tr> | |||
</table> | |||
==Examples== | |||
In the following example, a global daemon updates an XML document, then <var>HaveDaemon</var> verifies the continued existence of the daemon. | |||
<p class="code">begin | |||
%speed is object daemon global | |||
%list is object stringList | |||
%tiny is object xmlDoc | |||
%bool is enumeration boolean | |||
%speed = new | |||
%speed:run('*LOWER') | |||
%list = new | |||
text to %list | |||
begin | |||
%doc is object xmlDoc | |||
%(daemon):getInputObject(%doc) | |||
%doc:selectSingleNode('/out/in'):addAttribute('foo','bar') | |||
%(daemon):returnObject(%doc) | |||
end | |||
end text | |||
%tiny = new | |||
%tiny:loadXml('<out><in></in></out>') | |||
%speed:run(%list, %tiny, %tiny) | |||
%tiny:print | |||
%bool = %speed:havedaemon | |||
print '%bool is ' %bool:tostring | |||
%bool = % | |||
%bool | |||
end | end | ||
</p> | |||
</ | |||
The example above returns this result: | The example above returns this result: | ||
<p class="code"><out><in foo="bar"/></out>%bool is True | |||
</p> | |||
==See also== | |||
{{Template:Daemon:HaveDaemon footer}} | |||
Latest revision as of 02:14, 8 July 2012
Is the thread associated with this Daemon accessible? (Daemon class)
HaveDaemon returns a Boolean enumeration that indicates whether the daemon thread associated with the Daemon method object is accessible.
Syntax
%boolean = daemon:HaveDaemon
Syntax terms
| %boolean | A Boolean enumeration to contain the returned value of HaveDaemon.
HaveDaemon returns |
|---|---|
| daemon | A Daemon object. |
Examples
In the following example, a global daemon updates an XML document, then HaveDaemon verifies the continued existence of the daemon.
begin %speed is object daemon global %list is object stringList %tiny is object xmlDoc %bool is enumeration boolean %speed = new %speed:run('*LOWER') %list = new text to %list begin %doc is object xmlDoc %(daemon):getInputObject(%doc) %doc:selectSingleNode('/out/in'):addAttribute('foo','bar') %(daemon):returnObject(%doc) end end text %tiny = new %tiny:loadXml('<out><in></in></out>') %speed:run(%list, %tiny, %tiny) %tiny:print %bool = %speed:havedaemon print '%bool is ' %bool:tostring end
The example above returns this result:
<out><in foo="bar"/></out>%bool is True