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| |
| <section id="module-apache_beam.testing.benchmarks.nexmark.queries.query3"> |
| <span id="apache-beam-testing-benchmarks-nexmark-queries-query3-module"></span><h1>apache_beam.testing.benchmarks.nexmark.queries.query3 module<a class="headerlink" href="#module-apache_beam.testing.benchmarks.nexmark.queries.query3" title="Link to this heading"></a></h1> |
| <p>Query 3, ‘Local Item Suggestion’. Who is selling in OR, ID or CA in category |
| 10, and for what auction ids? In CQL syntax:</p> |
| <div class="highlight-default notranslate"><div class="highlight"><pre><span></span>SELECT Istream(P.name, P.city, P.state, A.id) |
| FROM Auction A [ROWS UNBOUNDED], Person P [ROWS UNBOUNDED] |
| WHERE A.seller = P.id |
| AND (P.state = `OR' OR P.state = `ID' OR P.state = `CA') |
| AND A.category = 10; |
| </pre></div> |
| </div> |
| <p>We’ll implement this query to allow ‘new auction’ events to come before the |
| ‘new person’ events for the auction seller. Those auctions will be stored until |
| the matching person is seen. Then all subsequent auctions for a person will use |
| the stored person record.</p> |
| <dl class="py function"> |
| <dt class="sig sig-object py" id="apache_beam.testing.benchmarks.nexmark.queries.query3.load"> |
| <span class="sig-prename descclassname"><span class="pre">apache_beam.testing.benchmarks.nexmark.queries.query3.</span></span><span class="sig-name descname"><span class="pre">load</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">events</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">metadata</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">None</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">pipeline_options</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">None</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/testing/benchmarks/nexmark/queries/query3.html#load"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#apache_beam.testing.benchmarks.nexmark.queries.query3.load" title="Link to this definition"></a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py class"> |
| <dt class="sig sig-object py" id="apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn"> |
| <em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">apache_beam.testing.benchmarks.nexmark.queries.query3.</span></span><span class="sig-name descname"><span class="pre">JoinFn</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">max_auction_wait_time</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/testing/benchmarks/nexmark/queries/query3.html#JoinFn"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn" title="Link to this definition"></a></dt> |
| <dd><p>Bases: <a class="reference internal" href="apache_beam.transforms.core.html#apache_beam.transforms.core.DoFn" title="apache_beam.transforms.core.DoFn"><code class="xref py py-class docutils literal notranslate"><span class="pre">DoFn</span></code></a></p> |
| <p>Join auctions and person by person id and emit their product one pair at |
| a time.</p> |
| <p>We know a person may submit any number of auctions. Thus new person event |
| must have the person record stored in persistent state in order to match |
| future auctions by that person.</p> |
| <p>However we know that each auction is associated with at most one person, so |
| only need to store auction records in persistent state until we have seen the |
| corresponding person record. And of course may have already seen that record.</p> |
| <dl class="py attribute"> |
| <dt class="sig sig-object py" id="apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn.AUCTIONS"> |
| <span class="sig-name descname"><span class="pre">AUCTIONS</span></span><em class="property"><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="pre">'auctions_state'</span></em><a class="headerlink" href="#apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn.AUCTIONS" title="Link to this definition"></a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py attribute"> |
| <dt class="sig sig-object py" id="apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn.PERSON"> |
| <span class="sig-name descname"><span class="pre">PERSON</span></span><em class="property"><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="pre">'person_state'</span></em><a class="headerlink" href="#apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn.PERSON" title="Link to this definition"></a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py attribute"> |
| <dt class="sig sig-object py" id="apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn.PERSON_EXPIRING"> |
| <span class="sig-name descname"><span class="pre">PERSON_EXPIRING</span></span><em class="property"><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="pre">'person_state_expiring'</span></em><a class="headerlink" href="#apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn.PERSON_EXPIRING" title="Link to this definition"></a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py attribute"> |
| <dt class="sig sig-object py" id="apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn.auction_spec"> |
| <span class="sig-name descname"><span class="pre">auction_spec</span></span><em class="property"><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="pre">BagStateSpec(auctions_state)</span></em><a class="headerlink" href="#apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn.auction_spec" title="Link to this definition"></a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py attribute"> |
| <dt class="sig sig-object py" id="apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn.person_spec"> |
| <span class="sig-name descname"><span class="pre">person_spec</span></span><em class="property"><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="pre">ReadModifyWriteStateSpec(person_state)</span></em><a class="headerlink" href="#apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn.person_spec" title="Link to this definition"></a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py attribute"> |
| <dt class="sig sig-object py" id="apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn.person_timer_spec"> |
| <span class="sig-name descname"><span class="pre">person_timer_spec</span></span><em class="property"><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="pre">TimerSpec(ts-person_state_expiring)</span></em><a class="headerlink" href="#apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn.person_timer_spec" title="Link to this definition"></a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py method"> |
| <dt class="sig sig-object py" id="apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn.process"> |
| <span class="sig-name descname"><span class="pre">process</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">element</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference external" href="https://docs.python.org/3/library/typing.html#typing.Tuple" title="(in Python v3.13)"><span class="pre">Tuple</span></a><span class="p"><span class="pre">[</span></span><a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.13)"><span class="pre">str</span></a><span class="p"><span class="pre">,</span></span><span class="w"> </span><a class="reference external" href="https://docs.python.org/3/library/typing.html#typing.Dict" title="(in Python v3.13)"><span class="pre">Dict</span></a><span class="p"><span class="pre">[</span></span><a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.13)"><span class="pre">str</span></a><span class="p"><span class="pre">,</span></span><span class="w"> </span><a class="reference external" href="https://docs.python.org/3/library/typing.html#typing.List" title="(in Python v3.13)"><span class="pre">List</span></a><span class="p"><span class="pre">[</span></span><a class="reference internal" href="apache_beam.testing.benchmarks.nexmark.models.nexmark_model.html#apache_beam.testing.benchmarks.nexmark.models.nexmark_model.Auction" title="apache_beam.testing.benchmarks.nexmark.models.nexmark_model.Auction"><span class="pre">Auction</span></a><span class="p"><span class="pre">]</span></span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><a class="reference external" href="https://docs.python.org/3/library/typing.html#typing.List" title="(in Python v3.13)"><span class="pre">List</span></a><span class="p"><span class="pre">[</span></span><a class="reference internal" href="apache_beam.testing.benchmarks.nexmark.models.nexmark_model.html#apache_beam.testing.benchmarks.nexmark.models.nexmark_model.Person" title="apache_beam.testing.benchmarks.nexmark.models.nexmark_model.Person"><span class="pre">Person</span></a><span class="p"><span class="pre">]</span></span><span class="p"><span class="pre">]</span></span><span class="p"><span class="pre">]</span></span></span></em>, <em class="sig-param"><span class="n"><span class="pre">auction_state</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">StateParam(auctions_state)</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">person_state</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">StateParam(person_state)</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">person_timer</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">TimerParam(ts</span> <span class="pre">-</span> <span class="pre">person_state_expiring)</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/testing/benchmarks/nexmark/queries/query3.html#JoinFn.process"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn.process" title="Link to this definition"></a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py method"> |
| <dt class="sig sig-object py" id="apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn.expiry"> |
| <span class="sig-name descname"><span class="pre">expiry</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">person_state</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">StateParam(person_state)</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/testing/benchmarks/nexmark/queries/query3.html#JoinFn.expiry"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#apache_beam.testing.benchmarks.nexmark.queries.query3.JoinFn.expiry" title="Link to this definition"></a></dt> |
| <dd></dd></dl> |
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