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<h1 class="nopad">Table of Contents</h1>
<div style="margin-left: 1em;" class="toc-section">
<a href="#toc0">Overview</a>
<div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.condition/*full-stack-traces*">*full-stack-traces*</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.condition/handler-case">handler-case</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.condition/print-stack-trace">print-stack-trace</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.condition/raise">raise</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.condition/stack-trace-info">stack-trace-info</a>
</div>
<br />
</div><div style="margin-left: 1em;" class="toc-section">
<a href="#condition.Condition">condition.Condition</a>
<div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.condition.Condition/-init">-init</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.condition.Condition/-meta">-meta</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.condition.Condition/-post-init">-post-init</a>
</div>
<br />
</div>
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<div id="content-tag"><h1 id="overview">API for <span id="namespace-name">condition</span></h1>
by <span id="author">Stephen C. Gilardi</span><br />
<br />Usage:
<pre>
(ns your-namespace
(:require <span id="long-name">clojure.contrib.condition</span>))
</pre><pre>
</pre><h2>Overview</h2>
<pre id="namespace-docstr">Flexible raising and handling of conditions:
Functions:
raise: raises a condition
handler-case: dispatches raised conditions to appropriate handlers
print-stack-trace: prints abbreviated or full condition stack traces
Data:
A condition is a map containing values for these keys:
- :type, a condition type specifier, typically a keyword
- :stack-trace, a stack trace to the site of the raise
- :message, a human-readable message (optional)
- :cause, a wrapped exception or condition (optional)
- other keys given as arguments to raise (optional)
Note: requires AOT compilation.
Based on an idea from Chouser:
<a href="http://groups.google.com/group/clojure/browse_frm/thread/da1285c538f22bb5">http://groups.google.com/group/clojure/browse_frm/thread/da1285c538f22bb5</a></pre>
<br />
<h2>Public Variables and Functions</h2>
<div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.condition/*full-stack-traces*">*full-stack-traces*</h2>
<span id="var-type">var</span><br />
<pre id="var-usage"></pre>
<pre id="var-docstr">Bind to true to include clojure.{core,lang,main} frames in stack
traces</pre>
<a href="http://github.com/richhickey/clojure-contrib/blob/e5b7819ef66410a87b8072417dc2f09ac4ddb03f/src/clojure/contrib/condition.clj#L56" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.condition/handler-case">handler-case</h2>
<span id="var-type">macro</span><br />
<pre id="var-usage">Usage: (handler-case dispatch-fn & body)
</pre>
<pre id="var-docstr">Executes body in a context where raised conditions can be handled.
dispatch-fn accepts a raised condition (a map) and returns a selector
used to choose a handler. Commonly, dispatch-fn will be :type to dispatch
on the condition's :type value.
Handlers are forms within body:
(handle key
...)
If a condition is raised, executes the body of the first handler whose
key satisfies (isa? selector key). If no handlers match, re-raises the
condition.
While a handler is running, *condition* is bound to the condition being
handled and *selector* is bound to to the value returned by dispatch-fn
that matched the handler's key.</pre>
<a href="http://github.com/richhickey/clojure-contrib/blob/e5b7819ef66410a87b8072417dc2f09ac4ddb03f/src/clojure/contrib/condition.clj#L71" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.condition/print-stack-trace">print-stack-trace</h2>
<span id="var-type">function</span><br />
<pre id="var-usage">Usage: (print-stack-trace x)
</pre>
<pre id="var-docstr">Prints a stack trace for a condition or Throwable. Skips frames for
classes in clojure.{core,lang,main} unless the *full-stack-traces* is
bound to logical true</pre>
<a href="http://github.com/richhickey/clojure-contrib/blob/e5b7819ef66410a87b8072417dc2f09ac4ddb03f/src/clojure/contrib/condition.clj#L128" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.condition/raise">raise</h2>
<span id="var-type">macro</span><br />
<pre id="var-usage">Usage: (raise)
(raise m)
(raise key val & keyvals)
</pre>
<pre id="var-docstr">Raises a condition. With no arguments, re-raises the current condition.
With one argument (a map), raises the argument. With two or more
arguments, raises a map with keys and values from the arguments.</pre>
<a href="http://github.com/richhickey/clojure-contrib/blob/e5b7819ef66410a87b8072417dc2f09ac4ddb03f/src/clojure/contrib/condition.clj#L60" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.condition/stack-trace-info">stack-trace-info</h2>
<span id="var-type">multimethod</span><br />
<pre id="var-usage">No usage documentation available</pre>
<pre id="var-docstr">Returns header, stack-trace, and cause info from conditions and
Throwables</pre>
<a href="http://github.com/richhickey/clojure-contrib/blob/e5b7819ef66410a87b8072417dc2f09ac4ddb03f/src/clojure/contrib/condition.clj#L106" id="var-source">Source</a>
</div>
<h2 id="namespace-name">condition.Condition</h2>
<pre id="namespace-docstr"></pre>
<br />
<div id="var-entry">
<hr />
<h2 id="clojure.contrib.condition.Condition/-init">-init</h2>
<span id="var-type">function</span><br />
<pre id="var-usage">Usage: (-init condition)
</pre>
<pre id="var-docstr">Constructs a Condition object with condition (a map) as its
metadata. Also initializes the superclass with the values at :message
and :cause, if any, so they are also available via .getMessage and
.getCause.</pre>
<a href="http://github.com/richhickey/clojure-contrib/blob/443409f56420f3dc7972131c34c189e63d28fdcb/src/clojure/contrib/condition/Condition.clj#L25" id="var-source">Source</a>
</div><div id="var-entry">
<hr />
<h2 id="clojure.contrib.condition.Condition/-meta">-meta</h2>
<span id="var-type">function</span><br />
<pre id="var-usage">Usage: (-meta this)
</pre>
<pre id="var-docstr">Returns this object's metadata, the condition</pre>
<a href="http://github.com/richhickey/clojure-contrib/blob/443409f56420f3dc7972131c34c189e63d28fdcb/src/clojure/contrib/condition/Condition.clj#L40" id="var-source">Source</a>
</div><div id="var-entry">
<hr />
<h2 id="clojure.contrib.condition.Condition/-post-init">-post-init</h2>
<span id="var-type">function</span><br />
<pre id="var-usage">Usage: (-post-init this condition)
</pre>
<pre id="var-docstr">Adds :stack-trace to the condition. Drops the bottom 3 frames because
they are always the same: implementation details of Condition and raise.</pre>
<a href="http://github.com/richhickey/clojure-contrib/blob/443409f56420f3dc7972131c34c189e63d28fdcb/src/clojure/contrib/condition/Condition.clj#L33" id="var-source">Source</a>
</div>
</div>
</div>
</div>
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<div style="text-align: center;" id="copyright">Copyright 2007-2009 by Rich Hickey and the various contributors</div>
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