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| <h1 title="Package" class="title">Package org.apache.beam.sdk.extensions.sql.impl.cep</h1> |
| <div class="docSummary"> |
| <div class="block">Utilities for Complex Event Processing (CEP).</div> |
| </div> |
| <p>See: <a href="#package.description">Description</a></p> |
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| <table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Class Summary table, listing classes, and an explanation"> |
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| <tr> |
| <th class="colFirst" scope="col">Class</th> |
| <th class="colLast" scope="col">Description</th> |
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| <td class="colFirst"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/cep/CEPCall.html" title="class in org.apache.beam.sdk.extensions.sql.impl.cep">CEPCall</a></td> |
| <td class="colLast"> |
| <div class="block">A <code>CEPCall</code> instance represents an operation (node) that contains an operator and a list of |
| operands.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/cep/CEPFieldRef.html" title="class in org.apache.beam.sdk.extensions.sql.impl.cep">CEPFieldRef</a></td> |
| <td class="colLast"> |
| <div class="block">A <code>CEPFieldRef</code> instance represents a node that points to a specified field in a <code>Row</code>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/cep/CEPLiteral.html" title="class in org.apache.beam.sdk.extensions.sql.impl.cep">CEPLiteral</a></td> |
| <td class="colLast"> |
| <div class="block"><code>CEPLiteral</code> represents a literal node.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/cep/CEPMeasure.html" title="class in org.apache.beam.sdk.extensions.sql.impl.cep">CEPMeasure</a></td> |
| <td class="colLast"> |
| <div class="block">The <code>CEPMeasure</code> class represents the Measures clause and contains information about output |
| columns.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/cep/CEPOperation.html" title="class in org.apache.beam.sdk.extensions.sql.impl.cep">CEPOperation</a></td> |
| <td class="colLast"> |
| <div class="block"><code>CEPOperation</code> is the base class for the evaluation operations defined in the <code>DEFINE</code> syntax of <code>MATCH_RECOGNIZE</code>.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/cep/CEPOperator.html" title="class in org.apache.beam.sdk.extensions.sql.impl.cep">CEPOperator</a></td> |
| <td class="colLast"> |
| <div class="block">The <code>CEPOperator</code> records the operators (i.e.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/cep/CEPPattern.html" title="class in org.apache.beam.sdk.extensions.sql.impl.cep">CEPPattern</a></td> |
| <td class="colLast"> |
| <div class="block">Core pattern class that stores the definition of a single pattern.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/cep/CEPUtils.html" title="class in org.apache.beam.sdk.extensions.sql.impl.cep">CEPUtils</a></td> |
| <td class="colLast"> |
| <div class="block">Some utility methods for transforming Calcite's constructs into our own Beam constructs (for |
| serialization purpose).</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/cep/OrderKey.html" title="class in org.apache.beam.sdk.extensions.sql.impl.cep">OrderKey</a></td> |
| <td class="colLast"> |
| <div class="block">The <code>OrderKey</code> class stores the information to sort a column.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/cep/PatternCondition.html" title="class in org.apache.beam.sdk.extensions.sql.impl.cep">PatternCondition</a></td> |
| <td class="colLast"> |
| <div class="block"><code>PatternCondition</code> stores the function to decide whether a row is a match of a single |
| pattern.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/cep/Quantifier.html" title="class in org.apache.beam.sdk.extensions.sql.impl.cep">Quantifier</a></td> |
| <td class="colLast"> |
| <div class="block">The <code>Quantifier</code> class is intended for storing the information of the quantifier for a |
| pattern variable.</div> |
| </td> |
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| </li> |
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| <th class="colLast" scope="col">Description</th> |
| </tr> |
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| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/cep/CEPKind.html" title="enum in org.apache.beam.sdk.extensions.sql.impl.cep">CEPKind</a></td> |
| <td class="colLast"> |
| <div class="block"><code>CEPKind</code> corresponds to Calcite's <code>SqlKind</code>.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
| </ul> |
| <a name="package.description"> |
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| </a> |
| <h2 title="Package org.apache.beam.sdk.extensions.sql.impl.cep Description">Package org.apache.beam.sdk.extensions.sql.impl.cep Description</h2> |
| <div class="block">Utilities for Complex Event Processing (CEP). |
| |
| <p>For serialization, Beam needs serializable classes to replace Calcite's classes. This package |
| includes some "cloned" classes to replace Calcite <code>RexNode</code>, <code>RelCollation</code>, <code>SqlOperator</code> etc.</div> |
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