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| <h2 title="Class JoinUtils" class="title">Class JoinUtils</h2> |
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| <pre>public class <span class="typeNameLabel">JoinUtils</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></pre> |
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| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/JoinUtils.JoinCategory.html" title="enum in org.apache.drill.exec.physical.impl.join">JoinUtils.JoinCategory</a></span></code> </td> |
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| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/JoinUtils.html#FAILED_TO_PLAN_CARTESIAN_JOIN">FAILED_TO_PLAN_CARTESIAN_JOIN</a></span></code> </td> |
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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/drill/exec/physical/impl/join/JoinUtils.html#JoinUtils--">JoinUtils</a></span>()</code> </td> |
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| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/JoinUtils.html#addLeastRestrictiveCasts-org.apache.drill.common.expression.LogicalExpression:A-org.apache.drill.exec.record.VectorAccessible-org.apache.drill.common.expression.LogicalExpression:A-org.apache.drill.exec.record.VectorAccessible-org.apache.drill.exec.ops.FragmentContext-">addLeastRestrictiveCasts</a></span>(<a href="../../../../../../../org/apache/drill/common/expression/LogicalExpression.html" title="interface in org.apache.drill.common.expression">LogicalExpression</a>[] leftExpressions, |
| <a href="../../../../../../../org/apache/drill/exec/record/VectorAccessible.html" title="interface in org.apache.drill.exec.record">VectorAccessible</a> leftBatch, |
| <a href="../../../../../../../org/apache/drill/common/expression/LogicalExpression.html" title="interface in org.apache.drill.common.expression">LogicalExpression</a>[] rightExpressions, |
| <a href="../../../../../../../org/apache/drill/exec/record/VectorAccessible.html" title="interface in org.apache.drill.exec.record">VectorAccessible</a> rightBatch, |
| <a href="../../../../../../../org/apache/drill/exec/ops/FragmentContext.html" title="interface in org.apache.drill.exec.ops">FragmentContext</a> context)</code> |
| <div class="block">Utility method used by joins to add implicit casts on one of the sides of the join condition in case the two |
| expressions have different types.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../../../org/apache/drill/exec/work/foreman/UnsupportedRelOperatorException.html" title="class in org.apache.drill.exec.work.foreman">UnsupportedRelOperatorException</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/JoinUtils.html#cartesianJoinPlanningException--">cartesianJoinPlanningException</a></span>()</code> |
| <div class="block">Creates new exception for queries that cannot be planned due |
| to presence of cartesian or inequality join.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../../../org/apache/drill/exec/physical/impl/common/Comparator.html" title="enum in org.apache.drill.exec.physical.impl.common">Comparator</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/JoinUtils.html#checkAndReturnSupportedJoinComparator-org.apache.drill.common.logical.data.JoinCondition-">checkAndReturnSupportedJoinComparator</a></span>(<a href="../../../../../../../org/apache/drill/common/logical/data/JoinCondition.html" title="class in org.apache.drill.common.logical.data">JoinCondition</a> condition)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/JoinUtils.html#checkCartesianJoin-org.apache.calcite.rel.RelNode-">checkCartesianJoin</a></span>(org.apache.calcite.rel.RelNode relNode)</code> |
| <div class="block">Check if the given RelNode contains any Cartesian join.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/JoinUtils.html#checkCartesianJoin-org.apache.calcite.rel.RelNode-java.util.List-java.util.List-java.util.List-">checkCartesianJoin</a></span>(org.apache.calcite.rel.RelNode relNode, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>> leftKeys, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>> rightKeys, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>> filterNulls)</code> |
| <div class="block">Check if the given RelNode contains any Cartesian join.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../../../org/apache/drill/exec/physical/impl/join/JoinUtils.JoinCategory.html" title="enum in org.apache.drill.exec.physical.impl.join">JoinUtils.JoinCategory</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/JoinUtils.html#getJoinCategory-org.apache.calcite.rel.RelNode-org.apache.calcite.rel.RelNode-org.apache.calcite.rex.RexNode-java.util.List-java.util.List-java.util.List-">getJoinCategory</a></span>(org.apache.calcite.rel.RelNode left, |
| org.apache.calcite.rel.RelNode right, |
| org.apache.calcite.rex.RexNode condition, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>> leftKeys, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>> rightKeys, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>> filterNulls)</code> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/JoinUtils.html#hasScalarSubqueryInput-org.apache.calcite.rel.RelNode-org.apache.calcite.rel.RelNode-">hasScalarSubqueryInput</a></span>(org.apache.calcite.rel.RelNode left, |
| org.apache.calcite.rel.RelNode right)</code> |
| <div class="block">Utility method to check if a any of input RelNodes is provably scalar.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/JoinUtils.html#isScalarSubquery-org.apache.calcite.rel.RelNode-">isScalarSubquery</a></span>(org.apache.calcite.rel.RelNode root)</code> |
| <div class="block">Utility method to check if a subquery (represented by its root RelNode) is provably scalar.</div> |
| </td> |
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| </ul> |
| </li> |
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| <h4>FAILED_TO_PLAN_CARTESIAN_JOIN</h4> |
| <pre>public static final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> FAILED_TO_PLAN_CARTESIAN_JOIN</pre> |
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| <h4>JoinUtils</h4> |
| <pre>public JoinUtils()</pre> |
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| <h4>checkAndReturnSupportedJoinComparator</h4> |
| <pre>public static <a href="../../../../../../../org/apache/drill/exec/physical/impl/common/Comparator.html" title="enum in org.apache.drill.exec.physical.impl.common">Comparator</a> checkAndReturnSupportedJoinComparator(<a href="../../../../../../../org/apache/drill/common/logical/data/JoinCondition.html" title="class in org.apache.drill.common.logical.data">JoinCondition</a> condition)</pre> |
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| <h4>checkCartesianJoin</h4> |
| <pre>public static boolean checkCartesianJoin(org.apache.calcite.rel.RelNode relNode, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>> leftKeys, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>> rightKeys, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>> filterNulls)</pre> |
| <div class="block">Check if the given RelNode contains any Cartesian join. |
| Return true if find one. Otherwise, return false.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>relNode</code> - the RelNode to be inspected.</dd> |
| <dd><code>leftKeys</code> - a list used for the left input into the join which has |
| equi-join keys. It can be empty or not (but not null), |
| this method will clear this list before using it.</dd> |
| <dd><code>rightKeys</code> - a list used for the right input into the join which has |
| equi-join keys. It can be empty or not (but not null), |
| this method will clear this list before using it.</dd> |
| <dd><code>filterNulls</code> - The join key positions for which null values will not |
| match.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Return true if the given relNode contains Cartesian join. |
| Otherwise, return false</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>checkCartesianJoin</h4> |
| <pre>public static boolean checkCartesianJoin(org.apache.calcite.rel.RelNode relNode)</pre> |
| <div class="block">Check if the given RelNode contains any Cartesian join. |
| Return true if find one. Otherwise, return false.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>relNode</code> - <code>RelNode</code> instance to be inspected</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Return true if the given relNode contains Cartesian join. |
| Otherwise, return false</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="addLeastRestrictiveCasts-org.apache.drill.common.expression.LogicalExpression:A-org.apache.drill.exec.record.VectorAccessible-org.apache.drill.common.expression.LogicalExpression:A-org.apache.drill.exec.record.VectorAccessible-org.apache.drill.exec.ops.FragmentContext-"> |
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| <h4>addLeastRestrictiveCasts</h4> |
| <pre>public static void addLeastRestrictiveCasts(<a href="../../../../../../../org/apache/drill/common/expression/LogicalExpression.html" title="interface in org.apache.drill.common.expression">LogicalExpression</a>[] leftExpressions, |
| <a href="../../../../../../../org/apache/drill/exec/record/VectorAccessible.html" title="interface in org.apache.drill.exec.record">VectorAccessible</a> leftBatch, |
| <a href="../../../../../../../org/apache/drill/common/expression/LogicalExpression.html" title="interface in org.apache.drill.common.expression">LogicalExpression</a>[] rightExpressions, |
| <a href="../../../../../../../org/apache/drill/exec/record/VectorAccessible.html" title="interface in org.apache.drill.exec.record">VectorAccessible</a> rightBatch, |
| <a href="../../../../../../../org/apache/drill/exec/ops/FragmentContext.html" title="interface in org.apache.drill.exec.ops">FragmentContext</a> context)</pre> |
| <div class="block">Utility method used by joins to add implicit casts on one of the sides of the join condition in case the two |
| expressions have different types.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>leftExpressions</code> - array of expressions from left input into the join</dd> |
| <dd><code>leftBatch</code> - left input record batch</dd> |
| <dd><code>rightExpressions</code> - array of expressions from right input into the join</dd> |
| <dd><code>rightBatch</code> - right input record batch</dd> |
| <dd><code>context</code> - fragment context</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="isScalarSubquery-org.apache.calcite.rel.RelNode-"> |
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| <h4>isScalarSubquery</h4> |
| <pre>public static boolean isScalarSubquery(org.apache.calcite.rel.RelNode root)</pre> |
| <div class="block">Utility method to check if a subquery (represented by its root RelNode) is provably scalar. Currently |
| only aggregates with no group-by are considered scalar. In the future, this method should be generalized |
| to include more cases and reconciled with Calcite's notion of scalar.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>root</code> - The root RelNode to be examined</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>True if the root rel or its descendant is scalar, False otherwise</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getJoinCategory-org.apache.calcite.rel.RelNode-org.apache.calcite.rel.RelNode-org.apache.calcite.rex.RexNode-java.util.List-java.util.List-java.util.List-"> |
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| <h4>getJoinCategory</h4> |
| <pre>public static <a href="../../../../../../../org/apache/drill/exec/physical/impl/join/JoinUtils.JoinCategory.html" title="enum in org.apache.drill.exec.physical.impl.join">JoinUtils.JoinCategory</a> getJoinCategory(org.apache.calcite.rel.RelNode left, |
| org.apache.calcite.rel.RelNode right, |
| org.apache.calcite.rex.RexNode condition, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>> leftKeys, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>> rightKeys, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>> filterNulls)</pre> |
| </li> |
| </ul> |
| <a name="hasScalarSubqueryInput-org.apache.calcite.rel.RelNode-org.apache.calcite.rel.RelNode-"> |
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| <h4>hasScalarSubqueryInput</h4> |
| <pre>public static boolean hasScalarSubqueryInput(org.apache.calcite.rel.RelNode left, |
| org.apache.calcite.rel.RelNode right)</pre> |
| <div class="block">Utility method to check if a any of input RelNodes is provably scalar.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>left</code> - the RelNode to be inspected.</dd> |
| <dd><code>right</code> - the RelNode to be inspected.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Return true if any of the given RelNodes is provably scalar. |
| Otherwise, return false</dd> |
| </dl> |
| </li> |
| </ul> |
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| </a> |
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| <li class="blockList"> |
| <h4>cartesianJoinPlanningException</h4> |
| <pre>public static <a href="../../../../../../../org/apache/drill/exec/work/foreman/UnsupportedRelOperatorException.html" title="class in org.apache.drill.exec.work.foreman">UnsupportedRelOperatorException</a> cartesianJoinPlanningException()</pre> |
| <div class="block">Creates new exception for queries that cannot be planned due |
| to presence of cartesian or inequality join.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>new <a href="../../../../../../../org/apache/drill/exec/work/foreman/UnsupportedRelOperatorException.html" title="class in org.apache.drill.exec.work.foreman"><code>UnsupportedRelOperatorException</code></a> instance</dd> |
| </dl> |
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