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<html>
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                <div id="right-sidebar"><div id="toc">
  <h1 class="nopad">Table of Contents</h1>
  <div style="margin-left: 1em;" class="toc-section">
    <a href="#toc0">Overview</a>
    
    <br />
  </div><div style="margin-left: 1em;" class="toc-section">
    <a href="#datalog.database">datalog.database</a>
    <div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.database/add-index">add-index</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.database/add-relation">add-relation</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.database/add-tuple">add-tuple</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.database/add-tuples">add-tuples</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.database/any-match?">any-match?</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.database/database-counts">database-counts</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.database/database-merge">database-merge</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.database/database-merge-parallel">database-merge-parallel</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.database/datalog-relation">datalog-relation</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.database/ensure-relation">ensure-relation</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.database/get-relation">get-relation</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.database/make-database">make-database</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.database/merge-relations">merge-relations</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.database/remove-tuple">remove-tuple</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.database/replace-relation">replace-relation</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.database/select">select</a>
    </div>
    <br />
  </div><div style="margin-left: 1em;" class="toc-section">
    <a href="#datalog.literals">datalog.literals</a>
    <div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.literals/build-atom">build-atom</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.literals/build-literal">build-literal</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.literals/display-literal">display-literal</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.literals/literal-columns">literal-columns</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.literals/literal-predicate">literal-predicate</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.literals/literal-vars">literal-vars</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.literals/negated?">negated?</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.literals/negative-vars">negative-vars</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.literals/positive-vars">positive-vars</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.literals/positive?">positive?</a>
    </div>
    <br />
  </div><div style="margin-left: 1em;" class="toc-section">
    <a href="#datalog.util">datalog.util</a>
    <div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.util/is-query-var?">is-query-var?</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.util/is-var?">is-var?</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.util/keys-to-vals">keys-to-vals</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.util/map-values">map-values</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.util/preduce">preduce</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.util/reverse-map">reverse-map</a>
    </div><div style="margin-left: 1em;" class="toc-entry">
      <a href="#clojure.contrib.datalog.util/trace-datalog">trace-datalog</a>
    </div>
    <br />
  </div>
</div>
</div>
                <div id="content-tag"><h1 id="overview">API for <span id="namespace-name">datalog</span>
  <span id="branch-name">(master branch)</span></h1>
by <span id="author">Jeffrey Straszheim</span><br />
<br />Usage:
<pre>
(ns your-namespace
  (:require <span id="long-name">clojure.contrib.datalog</span>))
</pre><pre>
</pre><h2>Overview</h2>
<pre id="namespace-docstr">A Clojure implementation of Datalog</pre>


<br />
<h2>Public Variables and Functions</h2>

<h2 id="namespace-name">datalog.database</h2>
<pre id="namespace-docstr"></pre>


<br />
<div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.database/add-index">add-index</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (add-index db name key)
</pre>
  <pre id="var-docstr">Adds an index to an empty relation named name</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.database/add-relation">add-relation</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (add-relation db name keys)
</pre>
  <pre id="var-docstr">Adds a relation to the database</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.database/add-tuple">add-tuple</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (add-tuple db rel-name tuple)
       (add-tuple rel tuple)
</pre>
  <pre id="var-docstr">Two forms:

[db relation-name tuple] adds tuple to the named relation.  Returns
the new database.

[rel tuple] adds to the relation object.  Returns the new relation.</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.database/add-tuples">add-tuples</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (add-tuples db &amp; tupls)
</pre>
  <pre id="var-docstr">Adds a collection of tuples to the db, as
(add-tuples db
   [:rel-name :key-1 1 :key-2 2]
   [:rel-name :key-1 2 :key-2 3])</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.database/any-match?">any-match?</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (any-match? db rn pt)
</pre>
  <pre id="var-docstr">Finds if there are any matching records for the partial tuple</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.database/database-counts">database-counts</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (database-counts db)
</pre>
  <pre id="var-docstr">Returns a map with the count of elements in each relation.</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.database/database-merge">database-merge</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (database-merge dbs)
</pre>
  <pre id="var-docstr">Merges databases together</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.database/database-merge-parallel">database-merge-parallel</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (database-merge-parallel dbs)
</pre>
  <pre id="var-docstr">Merges databases together in parallel</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.database/datalog-relation">datalog-relation</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (datalog-relation schema data indexes)
</pre>
  <pre id="var-docstr">Creates a relation</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.database/ensure-relation">ensure-relation</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (ensure-relation db name keys indexes)
</pre>
  <pre id="var-docstr">If the database lacks the named relation, add it</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.database/get-relation">get-relation</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (get-relation db rel-name)
</pre>
  <pre id="var-docstr">Get a relation object by name</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.database/make-database">make-database</h2>
  <span id="var-type">macro</span><br />
  <pre id="var-usage">Usage: (make-database &amp; commands)
</pre>
  <pre id="var-docstr">Makes a database, like this
(make-database
  (relation :fred [:mary :sue])
  (index :fred :mary)
  (relation :sally [:jen :becky])
  (index :sally :jen)
  (index :sally :becky))</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.database/merge-relations">merge-relations</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (merge-relations r1 r2)
</pre>
  <pre id="var-docstr">Merges two relations</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.database/remove-tuple">remove-tuple</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (remove-tuple db rel-name tuple)
       (remove-tuple rel tuple)
</pre>
  <pre id="var-docstr">Two forms:

[db relation-name tuple] removes the tuple from the named relation,
returns a new database.

[rel tuple] removes the tuple from the relation.  Returns the new
relation.</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.database/replace-relation">replace-relation</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (replace-relation db rel-name rel)
</pre>
  <pre id="var-docstr">Add or replace a fully constructed relation object to the database.</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.database/select">select</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (select db rn pt)
</pre>
  <pre id="var-docstr">finds all matching tuples to the partial tuple (pt) in the relation named (rn)</pre>
  
  
  
</div>
<h2 id="namespace-name">datalog.literals</h2>
<pre id="namespace-docstr"></pre>


<br />
<div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.literals/build-atom">build-atom</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (build-atom f type)
</pre>
  <pre id="var-docstr">Returns an unevaluated expression (to be used in a macro) of an
atom.</pre>
  
  
  <a href="http://github.com/richhickey/clojure-contrib/blob/78ee9b3e64c5ac6082fb223fc79292175e8e4f0c/src/main/clojure/clojure/contrib/datalog/literals.clj#L132" id="var-source">Source</a>
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.literals/build-literal">build-literal</h2>
  <span id="var-type">multimethod</span><br />
  <pre id="var-usage">No usage documentation available</pre>
  <pre id="var-docstr">(Returns an unevaluated expression (to be used in macros) of a
literal.</pre>
  
  
  <a href="http://github.com/richhickey/clojure-contrib/blob/78ee9b3e64c5ac6082fb223fc79292175e8e4f0c/src/main/clojure/clojure/contrib/datalog/literals.clj#L127" id="var-source">Source</a>
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.literals/display-literal">display-literal</h2>
  <span id="var-type">multimethod</span><br />
  <pre id="var-usage">No usage documentation available</pre>
  <pre id="var-docstr">Converts a struct representing a literal to a normal list</pre>
  
  
  <a href="http://github.com/richhickey/clojure-contrib/blob/78ee9b3e64c5ac6082fb223fc79292175e8e4f0c/src/main/clojure/clojure/contrib/datalog/literals.clj#L163" id="var-source">Source</a>
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.literals/literal-columns">literal-columns</h2>
  <span id="var-type">multimethod</span><br />
  <pre id="var-usage">No usage documentation available</pre>
  <pre id="var-docstr">Return the column names this applies to</pre>
  
  
  <a href="http://github.com/richhickey/clojure-contrib/blob/78ee9b3e64c5ac6082fb223fc79292175e8e4f0c/src/main/clojure/clojure/contrib/datalog/literals.clj#L47" id="var-source">Source</a>
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.literals/literal-predicate">literal-predicate</h2>
  <span id="var-type">multimethod</span><br />
  <pre id="var-usage">No usage documentation available</pre>
  <pre id="var-docstr">Return the predicate/relation this conditional operates over</pre>
  
  
  <a href="http://github.com/richhickey/clojure-contrib/blob/78ee9b3e64c5ac6082fb223fc79292175e8e4f0c/src/main/clojure/clojure/contrib/datalog/literals.clj#L43" id="var-source">Source</a>
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.literals/literal-vars">literal-vars</h2>
  <span id="var-type">multimethod</span><br />
  <pre id="var-usage">No usage documentation available</pre>
  <pre id="var-docstr">Returns the logic vars used by this literal</pre>
  
  
  <a href="http://github.com/richhickey/clojure-contrib/blob/78ee9b3e64c5ac6082fb223fc79292175e8e4f0c/src/main/clojure/clojure/contrib/datalog/literals.clj#L51" id="var-source">Source</a>
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.literals/negated?">negated?</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (negated? l)
</pre>
  <pre id="var-docstr">Is this literal a negated literal?</pre>
  
  
  <a href="http://github.com/richhickey/clojure-contrib/blob/78ee9b3e64c5ac6082fb223fc79292175e8e4f0c/src/main/clojure/clojure/contrib/datalog/literals.clj#L111" id="var-source">Source</a>
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.literals/negative-vars">negative-vars</h2>
  <span id="var-type">multimethod</span><br />
  <pre id="var-usage">No usage documentation available</pre>
  <pre id="var-docstr">Returns the logic vars used in a negative position</pre>
  
  
  <a href="http://github.com/richhickey/clojure-contrib/blob/78ee9b3e64c5ac6082fb223fc79292175e8e4f0c/src/main/clojure/clojure/contrib/datalog/literals.clj#L59" id="var-source">Source</a>
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.literals/positive-vars">positive-vars</h2>
  <span id="var-type">multimethod</span><br />
  <pre id="var-usage">No usage documentation available</pre>
  <pre id="var-docstr">Returns the logic vars used in a positive position</pre>
  
  
  <a href="http://github.com/richhickey/clojure-contrib/blob/78ee9b3e64c5ac6082fb223fc79292175e8e4f0c/src/main/clojure/clojure/contrib/datalog/literals.clj#L55" id="var-source">Source</a>
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.literals/positive?">positive?</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (positive? l)
</pre>
  <pre id="var-docstr">Is this a positive literal?</pre>
  
  
  <a href="http://github.com/richhickey/clojure-contrib/blob/78ee9b3e64c5ac6082fb223fc79292175e8e4f0c/src/main/clojure/clojure/contrib/datalog/literals.clj#L116" id="var-source">Source</a>
</div>
<h2 id="namespace-name">datalog.util</h2>
<pre id="namespace-docstr"></pre>


<br />
<div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.util/is-query-var?">is-query-var?</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (is-query-var? sym)
</pre>
  <pre id="var-docstr">Is this a query variable: e.g. a symbol prefixed with ??</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.util/is-var?">is-var?</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (is-var? sym)
</pre>
  <pre id="var-docstr">Is this a logic variable: e.g. a symbol prefixed with a ?</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.util/keys-to-vals">keys-to-vals</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (keys-to-vals m ks)
</pre>
  <pre id="var-docstr">Given a map and a collection of keys, return the collection of vals</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.util/map-values">map-values</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (map-values f hash)
</pre>
  <pre id="var-docstr">Like map, but works over the values of a hash map</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.util/preduce">preduce</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (preduce f data)
</pre>
  <pre id="var-docstr">Similar to merge-with, but the contents of each key are merged in
parallel using f.

f - a function of 2 arguments.
data - a collection of hashes.</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.util/reverse-map">reverse-map</h2>
  <span id="var-type">function</span><br />
  <pre id="var-usage">Usage: (reverse-map m)
</pre>
  <pre id="var-docstr">Reverse the keys/values of a map</pre>
  
  
  
</div><div id="var-entry">
  <hr />
  <h2 id="clojure.contrib.datalog.util/trace-datalog">trace-datalog</h2>
  <span id="var-type">macro</span><br />
  <pre id="var-usage">Usage: (trace-datalog &amp; body)
</pre>
  <pre id="var-docstr">If *test-datalog* is set to true, run the enclosed commands</pre>
  
  
  
</div>


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