| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <!-- NewPage --> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc --> |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> |
| <title>ResolvedTuple (Drill : 1.20.3 API)</title> |
| <link rel="stylesheet" type="text/css" href="../../../../../../../../stylesheet.css" title="Style"> |
| <script type="text/javascript" src="../../../../../../../../script.js"></script> |
| </head> |
| <body> |
| <script type="text/javascript"><!-- |
| try { |
| if (location.href.indexOf('is-external=true') == -1) { |
| parent.document.title="ResolvedTuple (Drill : 1.20.3 API)"; |
| } |
| } |
| catch(err) { |
| } |
| //--> |
| var methods = {"i0":10,"i1":10,"i2":6,"i3":6,"i4":10,"i5":10,"i6":10,"i7":10,"i8":10,"i9":6,"i10":10,"i11":10,"i12":6,"i13":10,"i14":10,"i15":10,"i16":6}; |
| var tabs = {65535:["t0","All Methods"],2:["t2","Instance Methods"],4:["t3","Abstract Methods"],8:["t4","Concrete Methods"]}; |
| var altColor = "altColor"; |
| var rowColor = "rowColor"; |
| var tableTab = "tableTab"; |
| var activeTableTab = "activeTableTab"; |
| </script> |
| <noscript> |
| <div>JavaScript is disabled on your browser.</div> |
| </noscript> |
| <!-- ========= START OF TOP NAVBAR ======= --> |
| <div class="topNav"><a name="navbar.top"> |
| <!-- --> |
| </a> |
| <div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div> |
| <a name="navbar.top.firstrow"> |
| <!-- --> |
| </a> |
| <ul class="navList" title="Navigation"> |
| <li><a href="../../../../../../../../overview-summary.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="navBarCell1Rev">Class</li> |
| <li><a href="class-use/ResolvedTuple.html">Use</a></li> |
| <li><a href="package-tree.html">Tree</a></li> |
| <li><a href="../../../../../../../../deprecated-list.html">Deprecated</a></li> |
| <li><a href="../../../../../../../../index-all.html">Index</a></li> |
| <li><a href="../../../../../../../../help-doc.html">Help</a></li> |
| </ul> |
| </div> |
| <div class="subNav"> |
| <ul class="navList"> |
| <li><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTableColumn.html" title="class in org.apache.drill.exec.physical.impl.scan.project"><span class="typeNameLink">Prev Class</span></a></li> |
| <li><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.ResolvedDict.html" title="class in org.apache.drill.exec.physical.impl.scan.project"><span class="typeNameLink">Next Class</span></a></li> |
| </ul> |
| <ul class="navList"> |
| <li><a href="../../../../../../../../index.html?org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html" target="_top">Frames</a></li> |
| <li><a href="ResolvedTuple.html" target="_top">No Frames</a></li> |
| </ul> |
| <ul class="navList" id="allclasses_navbar_top"> |
| <li><a href="../../../../../../../../allclasses-noframe.html">All Classes</a></li> |
| </ul> |
| <div> |
| <script type="text/javascript"><!-- |
| allClassesLink = document.getElementById("allclasses_navbar_top"); |
| if(window==top) { |
| allClassesLink.style.display = "block"; |
| } |
| else { |
| allClassesLink.style.display = "none"; |
| } |
| //--> |
| </script> |
| </div> |
| <div> |
| <ul class="subNavList"> |
| <li>Summary: </li> |
| <li><a href="#nested.class.summary">Nested</a> | </li> |
| <li><a href="#field.summary">Field</a> | </li> |
| <li><a href="#constructor.summary">Constr</a> | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li><a href="#field.detail">Field</a> | </li> |
| <li><a href="#constructor.detail">Constr</a> | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a name="skip.navbar.top"> |
| <!-- --> |
| </a></div> |
| <!-- ========= END OF TOP NAVBAR ========= --> |
| <!-- ======== START OF CLASS DATA ======== --> |
| <div class="header"> |
| <div class="subTitle">org.apache.drill.exec.physical.impl.scan.project</div> |
| <h2 title="Class ResolvedTuple" class="title">Class ResolvedTuple</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.drill.exec.physical.impl.scan.project.ResolvedTuple</li> |
| </ul> |
| </li> |
| </ul> |
| <div class="description"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <dl> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/VectorSource.html" title="interface in org.apache.drill.exec.physical.impl.scan.project">VectorSource</a></dd> |
| </dl> |
| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.ResolvedDict.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedTuple.ResolvedDict</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.ResolvedMap.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedTuple.ResolvedMap</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.ResolvedRow.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedTuple.ResolvedRow</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public abstract class <span class="typeNameLabel">ResolvedTuple</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/drill/exec/physical/impl/scan/project/VectorSource.html" title="interface in org.apache.drill.exec.physical.impl.scan.project">VectorSource</a></pre> |
| <div class="block">Drill rows are made up of a tree of tuples, with the row being the root |
| tuple. Each tuple contains columns, some of which may be maps. This |
| class represents each row or map in the output projection. |
| <p> |
| Output columns within the tuple can be projected from the data source, |
| might be null (requested columns that don't match a data source column) |
| or might be a constant (such as an implicit column.) This class |
| orchestrates assembling an output tuple from a collection of these |
| three column types. (Though implicit columns appear only in the root |
| tuple.) |
| |
| <h4>Null Handling</h4> |
| |
| The project list might reference a "missing" map if the project list |
| includes, say, <tt>SELECT a.b.c</tt> but <tt>`a`</tt> does not exist |
| in the data source. In this case, the column a is implied to be a map, |
| so the projection mechanism will create a null map for <tt>`a`</tt> |
| and <tt>`b`</tt>, and will create a null column for <tt>`c`</tt>. |
| <p> |
| To accomplish this recursive null processing, each tuple is associated |
| with a null builder. (The null builder can be null if projection is |
| implicit with a wildcard; in such a case no null columns can occur. |
| But, even here, with schema persistence, a <tt>SELECT *</tt> query |
| may need null columns if a second file does not contain a column |
| that appeared in a first file.) |
| <p> |
| The null builder is bound to each tuple to allow vector persistence |
| via the result vector cache. If we must create a null column |
| <tt>`x`</tt> in two different readers, then the rules of Drill |
| require that the same vector be used for both (or else a schema |
| change is signaled.) The vector cache works by name (and type). |
| Since maps may contain columns with the same names as other maps, |
| the vector cache must be associated with each tuple. And, by extension, |
| the null builder must also be associated with each tuple. |
| |
| <h4>Lifecycle</h4> |
| |
| The lifecycle of a resolved tuple is: |
| <ul> |
| <li>The projection mechanism creates the output tuple, and its columns, |
| by comparing the project list against the table schema. The result is |
| a set of table, null, or constant columns.</li> |
| <li>Once per schema change, the resolved tuple creates the output |
| tuple by linking to vectors in their original locations. As it turns out, |
| we can simply share the vectors; we don't need to transfer the buffers.</li> |
| <li>To prepare for the transfer, the tuple asks the null column builder |
| (if present) to build the required null columns.</li> |
| <li>Once the output tuple is built, it can be used for any number of |
| batches without further work. (The same vectors appear in the various inputs |
| and the output, eliminating the need for any transfers.)</li> |
| <li>Once per batch, the client must set the row count. This is needed for the |
| output container, and for any "null" maps that the project may have created.</li> |
| </ul> |
| |
| <h4>Projection Mapping</h4> |
| |
| Each column is is mapped into the output tuple (vector container or map) in |
| the order that the columns are defined here. (That order follows the project |
| list for explicit projection, or the table schema for implicit projection.) |
| The source, however, may be in any order (at least for the table schema.) |
| A projection mechanism identifies the <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/VectorSource.html" title="interface in org.apache.drill.exec.physical.impl.scan.project"><code>VectorSource</code></a> that supplies the |
| vector for the column, along with the vector's index within that source. |
| The resolved tuple is bound to an output tuple. The projection mechanism |
| grabs the input vector from the vector source at the indicated position, and |
| links it into the output tuple, represented by this projected tuple, at the |
| position of the resolved column in the child list. |
| |
| <h4>Caveats</h4> |
| |
| The project mechanism handles nested "missing" columns as mentioned |
| above. This works to create null columns within maps that are defined by the |
| data source. However, the mechanism does not currently handle creating null |
| columns within repeated maps or lists. Doing so is possible, but requires |
| adding a level of cardinality computation to create the proper number of |
| "inner" values.</div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ======== NESTED CLASS SUMMARY ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="nested.class.summary"> |
| <!-- --> |
| </a> |
| <h3>Nested Class Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Nested Class Summary table, listing nested classes, and an explanation"> |
| <caption><span>Nested Classes</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Class and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.ResolvedDict.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedTuple.ResolvedDict</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.ResolvedDictArray.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedTuple.ResolvedDictArray</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.ResolvedMap.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedTuple.ResolvedMap</a></span></code> |
| <div class="block">Represents a map implied by the project list, whether or not the map |
| actually appears in the table schema.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.ResolvedMapArray.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedTuple.ResolvedMapArray</a></span></code> |
| <div class="block">Represents a map tuple (not the map column, rather the value of the |
| map column.) When projecting, we create a new repeated map vector, |
| but share the offsets vector from input to output.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.ResolvedRow.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedTuple.ResolvedRow</a></span></code> |
| <div class="block">Represents the top-level tuple which is projected to a |
| vector container.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.ResolvedSingleDict.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedTuple.ResolvedSingleDict</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.ResolvedSingleMap.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedTuple.ResolvedSingleMap</a></span></code> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- =========== FIELD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="field.summary"> |
| <!-- --> |
| </a> |
| <h3>Field Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> |
| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/VectorSource.html" title="interface in org.apache.drill.exec.physical.impl.scan.project">VectorSource</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#binding">binding</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected <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="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedTuple</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#children">children</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected <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="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedColumn.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedColumn</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#members">members</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/NullColumnBuilder.html" title="class in org.apache.drill.exec.physical.impl.scan.project">NullColumnBuilder</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#nullBuilder">nullBuilder</a></span></code> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.summary"> |
| <!-- --> |
| </a> |
| <h3>Constructor Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#ResolvedTuple-org.apache.drill.exec.physical.impl.scan.project.NullColumnBuilder-">ResolvedTuple</a></span>(<a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/NullColumnBuilder.html" title="class in org.apache.drill.exec.physical.impl.scan.project">NullColumnBuilder</a> nullBuilder)</code> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.summary"> |
| <!-- --> |
| </a> |
| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#add-org.apache.drill.exec.physical.impl.scan.project.ResolvedColumn-">add</a></span>(<a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedColumn.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedColumn</a> col)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#addChild-org.apache.drill.exec.physical.impl.scan.project.ResolvedTuple-">addChild</a></span>(<a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedTuple</a> child)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>abstract void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#addVector-org.apache.drill.exec.vector.ValueVector-">addVector</a></span>(<a href="../../../../../../../../org/apache/drill/exec/vector/ValueVector.html" title="interface in org.apache.drill.exec.vector">ValueVector</a> vector)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>abstract <a href="../../../../../../../../org/apache/drill/exec/memory/BufferAllocator.html" title="interface in org.apache.drill.exec.memory">BufferAllocator</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#allocator--">allocator</a></span>()</code> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#buildColumns--">buildColumns</a></span>()</code> |
| <div class="block">Merge two or more <i>partial batches</i> to produce a final output batch.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#buildNulls-org.apache.drill.exec.physical.resultSet.ResultVectorCache-">buildNulls</a></span>(<a href="../../../../../../../../org/apache/drill/exec/physical/resultSet/ResultVectorCache.html" title="interface in org.apache.drill.exec.physical.resultSet">ResultVectorCache</a> vectorCache)</code> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#cascadeRowCount-int-">cascadeRowCount</a></span>(int rowCount)</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#close--">close</a></span>()</code> </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code><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="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedColumn.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedColumn</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#columns--">columns</a></span>()</code> </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>abstract int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#innerCardinality-int-">innerCardinality</a></span>(int outerCardinality)</code> </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#isSimpleProjection--">isSimpleProjection</a></span>()</code> </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#loadNulls-int-">loadNulls</a></span>(int rowCount)</code> </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>abstract <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></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#name--">name</a></span>()</code> </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/NullColumnBuilder.html" title="class in org.apache.drill.exec.physical.impl.scan.project">NullColumnBuilder</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#nullBuilder--">nullBuilder</a></span>()</code> </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#removeChild-org.apache.drill.exec.physical.impl.scan.project.ResolvedTuple-">removeChild</a></span>(<a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedTuple</a> child)</code> </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#reset--">reset</a></span>()</code> |
| <div class="block">During planning, discard a partial plan to allow reusing the same (root) tuple |
| for multiple projection plans.</div> |
| </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code>abstract void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html#setRowCount-int-">setRowCount</a></span>(int rowCount)</code> </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <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> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.org.apache.drill.exec.physical.impl.scan.project.VectorSource"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from interface org.apache.drill.exec.physical.impl.scan.project.<a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/VectorSource.html" title="interface in org.apache.drill.exec.physical.impl.scan.project">VectorSource</a></h3> |
| <code><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/VectorSource.html#vector-int-">vector</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ FIELD DETAIL =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="field.detail"> |
| <!-- --> |
| </a> |
| <h3>Field Detail</h3> |
| <a name="members"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>members</h4> |
| <pre>protected final <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="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedColumn.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedColumn</a>> members</pre> |
| </li> |
| </ul> |
| <a name="nullBuilder"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>nullBuilder</h4> |
| <pre>protected final <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/NullColumnBuilder.html" title="class in org.apache.drill.exec.physical.impl.scan.project">NullColumnBuilder</a> nullBuilder</pre> |
| </li> |
| </ul> |
| <a name="children"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>children</h4> |
| <pre>protected <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="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedTuple</a>> children</pre> |
| </li> |
| </ul> |
| <a name="binding"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>binding</h4> |
| <pre>protected <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/VectorSource.html" title="interface in org.apache.drill.exec.physical.impl.scan.project">VectorSource</a> binding</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.detail"> |
| <!-- --> |
| </a> |
| <h3>Constructor Detail</h3> |
| <a name="ResolvedTuple-org.apache.drill.exec.physical.impl.scan.project.NullColumnBuilder-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>ResolvedTuple</h4> |
| <pre>public ResolvedTuple(<a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/NullColumnBuilder.html" title="class in org.apache.drill.exec.physical.impl.scan.project">NullColumnBuilder</a> nullBuilder)</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a name="nullBuilder--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>nullBuilder</h4> |
| <pre>public <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/NullColumnBuilder.html" title="class in org.apache.drill.exec.physical.impl.scan.project">NullColumnBuilder</a> nullBuilder()</pre> |
| </li> |
| </ul> |
| <a name="add-org.apache.drill.exec.physical.impl.scan.project.ResolvedColumn-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>add</h4> |
| <pre>public void add(<a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedColumn.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedColumn</a> col)</pre> |
| </li> |
| </ul> |
| <a name="addChild-org.apache.drill.exec.physical.impl.scan.project.ResolvedTuple-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>addChild</h4> |
| <pre>public void addChild(<a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedTuple</a> child)</pre> |
| </li> |
| </ul> |
| <a name="removeChild-org.apache.drill.exec.physical.impl.scan.project.ResolvedTuple-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>removeChild</h4> |
| <pre>public void removeChild(<a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedTuple</a> child)</pre> |
| </li> |
| </ul> |
| <a name="isSimpleProjection--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isSimpleProjection</h4> |
| <pre>public boolean isSimpleProjection()</pre> |
| </li> |
| </ul> |
| <a name="columns--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>columns</h4> |
| <pre>public <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="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedColumn.html" title="class in org.apache.drill.exec.physical.impl.scan.project">ResolvedColumn</a>> columns()</pre> |
| </li> |
| </ul> |
| <a name="buildNulls-org.apache.drill.exec.physical.resultSet.ResultVectorCache-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>buildNulls</h4> |
| <pre>public void buildNulls(<a href="../../../../../../../../org/apache/drill/exec/physical/resultSet/ResultVectorCache.html" title="interface in org.apache.drill.exec.physical.resultSet">ResultVectorCache</a> vectorCache)</pre> |
| </li> |
| </ul> |
| <a name="loadNulls-int-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>loadNulls</h4> |
| <pre>public void loadNulls(int rowCount)</pre> |
| </li> |
| </ul> |
| <a name="innerCardinality-int-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>innerCardinality</h4> |
| <pre>public abstract int innerCardinality(int outerCardinality)</pre> |
| </li> |
| </ul> |
| <a name="buildColumns--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>buildColumns</h4> |
| <pre>protected void buildColumns()</pre> |
| <div class="block">Merge two or more <i>partial batches</i> to produce a final output batch. |
| A partial batch is a vertical slice of a batch, such as the set of null |
| columns or the set of data columns. |
| <p> |
| For example, consider |
| two partial batches:<pre><code> |
| (a, d, e) |
| (c, b)</code></pre> |
| We may wish to merge them by projecting columns into an output batch |
| of the form:<pre><code> |
| (a, b, c, d)</code></pre> |
| It is not necessary to project all columns from the inputs, but all |
| columns in the output must have a projection. |
| <p> |
| The merger is created once per schema, then can be reused for any |
| number of batches. The only restriction is that the partial batches must |
| have the same row count so that the final output batch record |
| count makes sense. |
| <p> |
| Merging is done by discarding any data in the output, then exchanging |
| the buffers from the input columns to the output, leaving projected |
| columns empty. Note that unprojected columns must be cleared by the |
| caller. The caller will have figured out which columns to project and |
| which not to project.</div> |
| </li> |
| </ul> |
| <a name="addVector-org.apache.drill.exec.vector.ValueVector-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>addVector</h4> |
| <pre>public abstract void addVector(<a href="../../../../../../../../org/apache/drill/exec/vector/ValueVector.html" title="interface in org.apache.drill.exec.vector">ValueVector</a> vector)</pre> |
| </li> |
| </ul> |
| <a name="setRowCount-int-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setRowCount</h4> |
| <pre>public abstract void setRowCount(int rowCount)</pre> |
| </li> |
| </ul> |
| <a name="cascadeRowCount-int-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>cascadeRowCount</h4> |
| <pre>protected void cascadeRowCount(int rowCount)</pre> |
| </li> |
| </ul> |
| <a name="allocator--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>allocator</h4> |
| <pre>public abstract <a href="../../../../../../../../org/apache/drill/exec/memory/BufferAllocator.html" title="interface in org.apache.drill.exec.memory">BufferAllocator</a> allocator()</pre> |
| </li> |
| </ul> |
| <a name="name--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>name</h4> |
| <pre>public abstract <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> name()</pre> |
| </li> |
| </ul> |
| <a name="reset--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>reset</h4> |
| <pre>public void reset()</pre> |
| <div class="block">During planning, discard a partial plan to allow reusing the same (root) tuple |
| for multiple projection plans.</div> |
| </li> |
| </ul> |
| <a name="close--"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>close</h4> |
| <pre>public void close()</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| </div> |
| <!-- ========= END OF CLASS DATA ========= --> |
| <!-- ======= START OF BOTTOM NAVBAR ====== --> |
| <div class="bottomNav"><a name="navbar.bottom"> |
| <!-- --> |
| </a> |
| <div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> |
| <a name="navbar.bottom.firstrow"> |
| <!-- --> |
| </a> |
| <ul class="navList" title="Navigation"> |
| <li><a href="../../../../../../../../overview-summary.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="navBarCell1Rev">Class</li> |
| <li><a href="class-use/ResolvedTuple.html">Use</a></li> |
| <li><a href="package-tree.html">Tree</a></li> |
| <li><a href="../../../../../../../../deprecated-list.html">Deprecated</a></li> |
| <li><a href="../../../../../../../../index-all.html">Index</a></li> |
| <li><a href="../../../../../../../../help-doc.html">Help</a></li> |
| </ul> |
| </div> |
| <div class="subNav"> |
| <ul class="navList"> |
| <li><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTableColumn.html" title="class in org.apache.drill.exec.physical.impl.scan.project"><span class="typeNameLink">Prev Class</span></a></li> |
| <li><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.ResolvedDict.html" title="class in org.apache.drill.exec.physical.impl.scan.project"><span class="typeNameLink">Next Class</span></a></li> |
| </ul> |
| <ul class="navList"> |
| <li><a href="../../../../../../../../index.html?org/apache/drill/exec/physical/impl/scan/project/ResolvedTuple.html" target="_top">Frames</a></li> |
| <li><a href="ResolvedTuple.html" target="_top">No Frames</a></li> |
| </ul> |
| <ul class="navList" id="allclasses_navbar_bottom"> |
| <li><a href="../../../../../../../../allclasses-noframe.html">All Classes</a></li> |
| </ul> |
| <div> |
| <script type="text/javascript"><!-- |
| allClassesLink = document.getElementById("allclasses_navbar_bottom"); |
| if(window==top) { |
| allClassesLink.style.display = "block"; |
| } |
| else { |
| allClassesLink.style.display = "none"; |
| } |
| //--> |
| </script> |
| </div> |
| <div> |
| <ul class="subNavList"> |
| <li>Summary: </li> |
| <li><a href="#nested.class.summary">Nested</a> | </li> |
| <li><a href="#field.summary">Field</a> | </li> |
| <li><a href="#constructor.summary">Constr</a> | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li><a href="#field.detail">Field</a> | </li> |
| <li><a href="#constructor.detail">Constr</a> | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a name="skip.navbar.bottom"> |
| <!-- --> |
| </a></div> |
| <!-- ======== END OF BOTTOM NAVBAR ======= --> |
| <p class="legalCopy"><small>Copyright © 1970 <a href="https://www.apache.org/">The Apache Software Foundation</a>. All rights reserved.</small></p> |
| </body> |
| </html> |
