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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.schema</a></div> |
| <h2 title="Interface ModifiableView" class="title">Interface ModifiableView</h2> |
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| <dt>All Superinterfaces:</dt> |
| <dd><code><a href="Table.html" title="interface in org.apache.calcite.schema">Table</a></code></dd> |
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| <dl> |
| <dt>All Known Implementing Classes:</dt> |
| <dd><code><a href="impl/ModifiableViewTable.html" title="class in org.apache.calcite.schema.impl">ModifiableViewTable</a></code></dd> |
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| <hr> |
| <pre>public interface <span class="typeNameLabel">ModifiableView</span> |
| extends <a href="Table.html" title="interface in org.apache.calcite.schema">Table</a></pre> |
| <div class="block">A modifiable view onto <a href="ModifiableTable.html" title="interface in org.apache.calcite.schema"><code>ModifiableTable</code></a>. |
| |
| <p>It describes how its columns map onto the underlying table's columns, |
| and any constraints that incoming rows must satisfy. |
| |
| <p>For example, given |
| |
| <blockquote><pre> |
| CREATE TABLE emps (empno INTEGER, gender VARCHAR(1), deptno INTEGER); |
| CREATE VIEW female_emps AS |
| SELECT empno, deptno FROM emps WHERE gender = 'F'; |
| </pre></blockquote> |
| |
| <p>constraint is <code>$1 = 'F'</code> |
| and column mapping is <code>[0, 2]</code>. |
| |
| <p>NOTE: The current API is inefficient and experimental. It will change |
| without notice.</p></div> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
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| <td class="colFirst"><code><a href="../util/ImmutableIntList.html" title="class in org.apache.calcite.util">ImmutableIntList</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getColumnMapping()">getColumnMapping</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the column mapping onto another table.</div> |
| </td> |
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| <td class="colFirst"><code><a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getConstraint(org.apache.calcite.rex.RexBuilder,org.apache.calcite.rel.type.RelDataType)">getConstraint</a></span>​(<a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a> rexBuilder, |
| <a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a> tableRowType)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a constraint that each candidate row must satisfy.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><a href="Table.html" title="interface in org.apache.calcite.schema">Table</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTable()">getTable</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the underlying table.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="Path.html" title="interface in org.apache.calcite.schema">Path</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTablePath()">getTablePath</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the full path of the underlying table.</div> |
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| <h3>Methods inherited from interface org.apache.calcite.schema.<a href="Table.html" title="interface in org.apache.calcite.schema">Table</a></h3> |
| <code><a href="Table.html#getJdbcTableType()">getJdbcTableType</a>, <a href="Table.html#getRowType(org.apache.calcite.rel.type.RelDataTypeFactory)">getRowType</a>, <a href="Table.html#getStatistic()">getStatistic</a>, <a href="Table.html#isRolledUp(java.lang.String)">isRolledUp</a>, <a href="Table.html#rolledUpColumnValidInsideAgg(java.lang.String,org.apache.calcite.sql.SqlCall,org.apache.calcite.sql.SqlNode,org.apache.calcite.config.CalciteConnectionConfig)">rolledUpColumnValidInsideAgg</a></code></li> |
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| <a id="getConstraint(org.apache.calcite.rex.RexBuilder,org.apache.calcite.rel.type.RelDataType)"> |
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| <h4>getConstraint</h4> |
| <pre class="methodSignature"><a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a> getConstraint​(<a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a> rexBuilder, |
| <a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a> tableRowType)</pre> |
| <div class="block">Returns a constraint that each candidate row must satisfy. |
| |
| <p>Never null; if there is no constraint, returns "true".</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>rexBuilder</code> - Rex builder</dd> |
| <dd><code>tableRowType</code> - Row type of the table that this view maps onto</dd> |
| </dl> |
| </li> |
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| <h4>getColumnMapping</h4> |
| <pre class="methodSignature"><a href="../util/ImmutableIntList.html" title="class in org.apache.calcite.util">ImmutableIntList</a> getColumnMapping()</pre> |
| <div class="block">Returns the column mapping onto another table. |
| |
| <p><code>mapping[i]</code> contains the column of the underlying table that the |
| <code>i</code>th column of the view comes from, or -1 if it is based on an |
| expression.</div> |
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| <h4>getTable</h4> |
| <pre class="methodSignature"><a href="Table.html" title="interface in org.apache.calcite.schema">Table</a> getTable()</pre> |
| <div class="block">Returns the underlying table.</div> |
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| <h4>getTablePath</h4> |
| <pre class="methodSignature"><a href="Path.html" title="interface in org.apache.calcite.schema">Path</a> getTablePath()</pre> |
| <div class="block">Returns the full path of the underlying table.</div> |
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