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| <h2 title="Class QueryProviderImpl" class="title">Class QueryProviderImpl</h2> |
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| <li>org.apache.calcite.linq4j.QueryProviderImpl</li> |
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| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../org/apache/calcite/adapter/jdbc/JdbcQueryProvider.html" title="class in org.apache.calcite.adapter.jdbc">JdbcQueryProvider</a></dd> |
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| <pre>public abstract class <span class="typeNameLabel">QueryProviderImpl</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> |
| implements <a href="../../../../org/apache/calcite/linq4j/QueryProvider.html" title="interface in org.apache.calcite.linq4j">QueryProvider</a></pre> |
| <div class="block">Partial implementation of <a href="../../../../org/apache/calcite/linq4j/QueryProvider.html" title="interface in org.apache.calcite.linq4j"><code>QueryProvider</code></a>. |
| |
| <p>Derived class needs to implement <a href="../../../../org/apache/calcite/linq4j/QueryProvider.html#executeQuery-org.apache.calcite.linq4j.Queryable-"><code>QueryProvider.executeQuery(org.apache.calcite.linq4j.Queryable<T>)</code></a>.</p></div> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/linq4j/QueryProviderImpl.QueryableImpl.html" title="class in org.apache.calcite.linq4j">QueryProviderImpl.QueryableImpl</a><<a href="../../../../org/apache/calcite/linq4j/QueryProviderImpl.QueryableImpl.html" title="type parameter in QueryProviderImpl.QueryableImpl">T</a>></span></code> |
| <div class="block">Binds an expression to this query provider.</div> |
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| <th class="colOne" scope="col">Constructor and Description</th> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/linq4j/QueryProviderImpl.html#QueryProviderImpl--">QueryProviderImpl</a></span>()</code> |
| <div class="block">Creates a QueryProviderImpl.</div> |
| </td> |
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| <td class="colFirst"><code><T> <a href="../../../../org/apache/calcite/linq4j/Queryable.html" title="interface in org.apache.calcite.linq4j">Queryable</a><T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/linq4j/QueryProviderImpl.html#createQuery-org.apache.calcite.linq4j.tree.Expression-java.lang.Class-">createQuery</a></span>(<a href="../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> expression, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><T> rowType)</code> |
| <div class="block">Constructs a <a href="../../../../org/apache/calcite/linq4j/Queryable.html" title="interface in org.apache.calcite.linq4j"><code>Queryable</code></a> object that can evaluate the query |
| represented by a specified expression tree.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><T> <a href="../../../../org/apache/calcite/linq4j/Queryable.html" title="interface in org.apache.calcite.linq4j">Queryable</a><T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/linq4j/QueryProviderImpl.html#createQuery-org.apache.calcite.linq4j.tree.Expression-java.lang.reflect.Type-">createQuery</a></span>(<a href="../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> expression, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</a> rowType)</code> |
| <div class="block">Constructs a <a href="../../../../org/apache/calcite/linq4j/Queryable.html" title="interface in org.apache.calcite.linq4j"><code>Queryable</code></a> object that can evaluate the query |
| represented by a specified expression tree.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><T> T</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/linq4j/QueryProviderImpl.html#execute-org.apache.calcite.linq4j.tree.Expression-java.lang.Class-">execute</a></span>(<a href="../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> expression, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><T> type)</code> |
| <div class="block">Executes the query represented by a specified expression tree.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><T> T</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/linq4j/QueryProviderImpl.html#execute-org.apache.calcite.linq4j.tree.Expression-java.lang.reflect.Type-">execute</a></span>(<a href="../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> expression, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</a> type)</code> |
| <div class="block">Executes the query represented by a specified expression tree.</div> |
| </td> |
| </tr> |
| </table> |
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| <h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
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| </a> |
| <h3>Methods inherited from interface org.apache.calcite.linq4j.<a href="../../../../org/apache/calcite/linq4j/QueryProvider.html" title="interface in org.apache.calcite.linq4j">QueryProvider</a></h3> |
| <code><a href="../../../../org/apache/calcite/linq4j/QueryProvider.html#executeQuery-org.apache.calcite.linq4j.Queryable-">executeQuery</a></code></li> |
| </ul> |
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| <a name="QueryProviderImpl--"> |
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| <h4>QueryProviderImpl</h4> |
| <pre>public QueryProviderImpl()</pre> |
| <div class="block">Creates a QueryProviderImpl.</div> |
| </li> |
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| </li> |
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| <h3>Method Detail</h3> |
| <a name="createQuery-org.apache.calcite.linq4j.tree.Expression-java.lang.Class-"> |
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| <h4>createQuery</h4> |
| <pre>public <T> <a href="../../../../org/apache/calcite/linq4j/Queryable.html" title="interface in org.apache.calcite.linq4j">Queryable</a><T> createQuery(<a href="../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> expression, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><T> rowType)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/calcite/linq4j/QueryProvider.html#createQuery-org.apache.calcite.linq4j.tree.Expression-java.lang.Class-">QueryProvider</a></code></span></div> |
| <div class="block">Constructs a <a href="../../../../org/apache/calcite/linq4j/Queryable.html" title="interface in org.apache.calcite.linq4j"><code>Queryable</code></a> object that can evaluate the query |
| represented by a specified expression tree. |
| |
| <p>NOTE: The <a href="../../../../org/apache/calcite/linq4j/RawQueryable.html#getExpression--"><code>RawQueryable.getExpression()</code></a> |
| property of the returned <a href="../../../../org/apache/calcite/linq4j/Queryable.html" title="interface in org.apache.calcite.linq4j"><code>Queryable</code></a> object is equal to |
| <code>expression</code>.</p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/linq4j/QueryProvider.html#createQuery-org.apache.calcite.linq4j.tree.Expression-java.lang.Class-">createQuery</a></code> in interface <code><a href="../../../../org/apache/calcite/linq4j/QueryProvider.html" title="interface in org.apache.calcite.linq4j">QueryProvider</a></code></dd> |
| <dt><span class="paramLabel">Type Parameters:</span></dt> |
| <dd><code>T</code> - Row type</dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>expression</code> - Expression</dd> |
| <dd><code>rowType</code> - Row type</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Queryable</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="createQuery-org.apache.calcite.linq4j.tree.Expression-java.lang.reflect.Type-"> |
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| </a> |
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| <h4>createQuery</h4> |
| <pre>public <T> <a href="../../../../org/apache/calcite/linq4j/Queryable.html" title="interface in org.apache.calcite.linq4j">Queryable</a><T> createQuery(<a href="../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> expression, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</a> rowType)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/calcite/linq4j/QueryProvider.html#createQuery-org.apache.calcite.linq4j.tree.Expression-java.lang.reflect.Type-">QueryProvider</a></code></span></div> |
| <div class="block">Constructs a <a href="../../../../org/apache/calcite/linq4j/Queryable.html" title="interface in org.apache.calcite.linq4j"><code>Queryable</code></a> object that can evaluate the query |
| represented by a specified expression tree. The row type may contain |
| generic information.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/linq4j/QueryProvider.html#createQuery-org.apache.calcite.linq4j.tree.Expression-java.lang.reflect.Type-">createQuery</a></code> in interface <code><a href="../../../../org/apache/calcite/linq4j/QueryProvider.html" title="interface in org.apache.calcite.linq4j">QueryProvider</a></code></dd> |
| <dt><span class="paramLabel">Type Parameters:</span></dt> |
| <dd><code>T</code> - Row type</dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>expression</code> - Expression</dd> |
| <dd><code>rowType</code> - Row type</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Queryable</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="execute-org.apache.calcite.linq4j.tree.Expression-java.lang.Class-"> |
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| </a> |
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| <li class="blockList"> |
| <h4>execute</h4> |
| <pre>public <T> T execute(<a href="../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> expression, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><T> type)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/calcite/linq4j/QueryProvider.html#execute-org.apache.calcite.linq4j.tree.Expression-java.lang.Class-">QueryProvider</a></code></span></div> |
| <div class="block">Executes the query represented by a specified expression tree. |
| |
| <p>This method executes queries that return a single value |
| (instead of an enumerable sequence of values). Expression trees that |
| represent queries that return enumerable results are executed when the |
| <a href="../../../../org/apache/calcite/linq4j/Queryable.html" title="interface in org.apache.calcite.linq4j"><code>Queryable</code></a> object that contains the expression tree is |
| enumerated.</p> |
| |
| <p>The Queryable standard query operator methods that return singleton |
| results call <code>execute</code>. They pass it a |
| <a href="../../../../org/apache/calcite/linq4j/tree/MethodCallExpression.html" title="class in org.apache.calcite.linq4j.tree"><code>MethodCallExpression</code></a> |
| that represents a linq4j query.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/linq4j/QueryProvider.html#execute-org.apache.calcite.linq4j.tree.Expression-java.lang.Class-">execute</a></code> in interface <code><a href="../../../../org/apache/calcite/linq4j/QueryProvider.html" title="interface in org.apache.calcite.linq4j">QueryProvider</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="execute-org.apache.calcite.linq4j.tree.Expression-java.lang.reflect.Type-"> |
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| </a> |
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| <h4>execute</h4> |
| <pre>public <T> T execute(<a href="../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> expression, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</a> type)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/calcite/linq4j/QueryProvider.html#execute-org.apache.calcite.linq4j.tree.Expression-java.lang.reflect.Type-">QueryProvider</a></code></span></div> |
| <div class="block">Executes the query represented by a specified expression tree. |
| The row type may contain type parameters.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
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