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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.sql</a></div> |
| <h2 title="Class SqlSnapshot" class="title">Class SqlSnapshot</h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="SqlNode.html" title="class in org.apache.calcite.sql">org.apache.calcite.sql.SqlNode</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="SqlCall.html" title="class in org.apache.calcite.sql">org.apache.calcite.sql.SqlCall</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.calcite.sql.SqlSnapshot</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><code>java.lang.Cloneable</code></dd> |
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| <pre>public class <span class="typeNameLabel">SqlSnapshot</span> |
| extends <a href="SqlCall.html" title="class in org.apache.calcite.sql">SqlCall</a></pre> |
| <div class="block">Parse tree node for "<code>FOR SYSTEM_TIME AS OF</code>" temporal clause.</div> |
| </li> |
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| <h3>Nested Class Summary</h3> |
| <table class="memberSummary"> |
| <caption><span>Nested Classes</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Class</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="SqlSnapshot.SqlSnapshotOperator.html" title="class in org.apache.calcite.sql">SqlSnapshot.SqlSnapshotOperator</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">An operator describing a FOR SYSTEM_TIME specification.</div> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Field</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#OPERAND_PERIOD">OPERAND_PERIOD</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#OPERAND_TABLE_REF">OPERAND_TABLE_REF</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#period">period</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#tableRef">tableRef</a></span></code></th> |
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| </a> |
| <h3>Fields inherited from class org.apache.calcite.sql.<a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></h3> |
| <code><a href="SqlNode.html#EMPTY_ARRAY">EMPTY_ARRAY</a>, <a href="SqlNode.html#pos">pos</a></code></li> |
| </ul> |
| </li> |
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| <tr> |
| <th class="colFirst" scope="col">Constructor</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.sql.parser.SqlParserPos,org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.SqlNode)">SqlSnapshot</a></span>​(<a href="parser/SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a> pos, |
| <a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> tableRef, |
| <a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> period)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates a SqlSnapshot.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
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| <h3>Method Summary</h3> |
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| <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="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="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>java.util.List<<a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getOperandList()">getOperandList</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="SqlOperator.html" title="class in org.apache.calcite.sql">SqlOperator</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getOperator()">getOperator</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPeriod()">getPeriod</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTableRef()">getTableRef</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setOperand(int,org.apache.calcite.sql.SqlNode)">setOperand</a></span>​(int i, |
| <a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> operand)</code></th> |
| <td class="colLast"> |
| <div class="block">Changes the value of an operand.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#unparse(org.apache.calcite.sql.SqlWriter,int,int)">unparse</a></span>​(<a href="SqlWriter.html" title="interface in org.apache.calcite.sql">SqlWriter</a> writer, |
| int leftPrec, |
| int rightPrec)</code></th> |
| <td class="colLast"> |
| <div class="block">Writes a SQL representation of this node to a writer.</div> |
| </td> |
| </tr> |
| </table> |
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| </a> |
| <h3>Methods inherited from class org.apache.calcite.sql.<a href="SqlCall.html" title="class in org.apache.calcite.sql">SqlCall</a></h3> |
| <code><a href="SqlCall.html#accept(org.apache.calcite.sql.util.SqlVisitor)">accept</a>, <a href="SqlCall.html#clone(org.apache.calcite.sql.parser.SqlParserPos)">clone</a>, <a href="SqlCall.html#equalsDeep(org.apache.calcite.sql.SqlNode,org.apache.calcite.util.Litmus)">equalsDeep</a>, <a href="SqlCall.html#findValidOptions(org.apache.calcite.sql.validate.SqlValidator,org.apache.calcite.sql.validate.SqlValidatorScope,org.apache.calcite.sql.parser.SqlParserPos,java.util.Collection)">findValidOptions</a>, <a href="SqlCall.html#getCallSignature(org.apache.calcite.sql.validate.SqlValidator,org.apache.calcite.sql.validate.SqlValidatorScope)">getCallSignature</a>, <a href="SqlCall.html#getFunctionQuantifier()">getFunctionQuantifier</a>, <a href="SqlCall.html#getKind()">getKind</a>, <a href="SqlCall.html#getMonotonicity(org.apache.calcite.sql.validate.SqlValidatorScope)">getMonotonicity</a>, <a href="SqlCall.html#isCountStar()">isCountStar</a>, <a href="SqlCall.html#isExpanded()">isExpanded</a>, <a href="SqlCall.html#operand(int)">operand</a>, <a href="SqlCall.html#operandCount()">operandCount</a>, <a href="SqlCall.html#validate(org.apache.calcite.sql.validate.SqlValidator,org.apache.calcite.sql.validate.SqlValidatorScope)">validate</a></code></li> |
| </ul> |
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| </a> |
| <h3>Methods inherited from class org.apache.calcite.sql.<a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></h3> |
| <code><a href="SqlNode.html#clone()">clone</a>, <a href="SqlNode.html#clone(E)">clone</a>, <a href="SqlNode.html#cloneArray(org.apache.calcite.sql.SqlNode%5B%5D)">cloneArray</a>, <a href="SqlNode.html#equalDeep(java.util.List,java.util.List,org.apache.calcite.util.Litmus)">equalDeep</a>, <a href="SqlNode.html#equalDeep(org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.SqlNode,org.apache.calcite.util.Litmus)">equalDeep</a>, <a href="SqlNode.html#equalsDeep(org.apache.calcite.sql.SqlNode,boolean)">equalsDeep</a>, <a href="SqlNode.html#getParserPosition()">getParserPosition</a>, <a href="SqlNode.html#isA(java.util.Set)">isA</a>, <a href="SqlNode.html#toSqlString(org.apache.calcite.sql.SqlDialect)">toSqlString</a>, <a href="SqlNode.html#toSqlString(org.apache.calcite.sql.SqlDialect,boolean)">toSqlString</a>, <a href="SqlNode.html#toString()">toString</a>, <a href="SqlNode.html#validateExpr(org.apache.calcite.sql.validate.SqlValidator,org.apache.calcite.sql.validate.SqlValidatorScope)">validateExpr</a></code></li> |
| </ul> |
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| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</code></li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
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| <!-- ============ FIELD DETAIL =========== --> |
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| </a> |
| <h3>Field Detail</h3> |
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| <h4>OPERAND_TABLE_REF</h4> |
| <pre>private static final int OPERAND_TABLE_REF</pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../constant-values.html#org.apache.calcite.sql.SqlSnapshot.OPERAND_TABLE_REF">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="OPERAND_PERIOD"> |
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| </a> |
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| <h4>OPERAND_PERIOD</h4> |
| <pre>private static final int OPERAND_PERIOD</pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../constant-values.html#org.apache.calcite.sql.SqlSnapshot.OPERAND_PERIOD">Constant Field Values</a></dd> |
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| <a id="tableRef"> |
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| <h4>tableRef</h4> |
| <pre>private <a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> tableRef</pre> |
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| <h4>period</h4> |
| <pre>private <a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> period</pre> |
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| <h3>Constructor Detail</h3> |
| <a id="<init>(org.apache.calcite.sql.parser.SqlParserPos,org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.SqlNode)"> |
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| <h4>SqlSnapshot</h4> |
| <pre>public SqlSnapshot​(<a href="parser/SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a> pos, |
| <a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> tableRef, |
| <a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> period)</pre> |
| <div class="block">Creates a SqlSnapshot.</div> |
| </li> |
| </ul> |
| </li> |
| </ul> |
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| <a id="getOperator()"> |
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| <h4>getOperator</h4> |
| <pre class="methodSignature">public <a href="SqlOperator.html" title="class in org.apache.calcite.sql">SqlOperator</a> getOperator()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="SqlCall.html#getOperator()">getOperator</a></code> in class <code><a href="SqlCall.html" title="class in org.apache.calcite.sql">SqlCall</a></code></dd> |
| </dl> |
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| </ul> |
| <a id="getOperandList()"> |
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| <h4>getOperandList</h4> |
| <pre class="methodSignature">public java.util.List<<a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>> getOperandList()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="SqlCall.html#getOperandList()">getOperandList</a></code> in class <code><a href="SqlCall.html" title="class in org.apache.calcite.sql">SqlCall</a></code></dd> |
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| <a id="getTableRef()"> |
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| <h4>getTableRef</h4> |
| <pre class="methodSignature">public <a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> getTableRef()</pre> |
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| <h4>getPeriod</h4> |
| <pre class="methodSignature">public <a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> getPeriod()</pre> |
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| <a id="setOperand(int,org.apache.calcite.sql.SqlNode)"> |
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| <h4>setOperand</h4> |
| <pre class="methodSignature">public void setOperand​(int i, |
| <a href="SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> operand)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="SqlCall.html#setOperand(int,org.apache.calcite.sql.SqlNode)">SqlCall</a></code></span></div> |
| <div class="block">Changes the value of an operand. Allows some rewrite by |
| <a href="validate/SqlValidator.html" title="interface in org.apache.calcite.sql.validate"><code>SqlValidator</code></a>; use sparingly.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="SqlCall.html#setOperand(int,org.apache.calcite.sql.SqlNode)">setOperand</a></code> in class <code><a href="SqlCall.html" title="class in org.apache.calcite.sql">SqlCall</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>i</code> - Operand index</dd> |
| <dd><code>operand</code> - Operand value</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="unparse(org.apache.calcite.sql.SqlWriter,int,int)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>unparse</h4> |
| <pre class="methodSignature">public void unparse​(<a href="SqlWriter.html" title="interface in org.apache.calcite.sql">SqlWriter</a> writer, |
| int leftPrec, |
| int rightPrec)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="SqlNode.html#unparse(org.apache.calcite.sql.SqlWriter,int,int)">SqlNode</a></code></span></div> |
| <div class="block">Writes a SQL representation of this node to a writer. |
| |
| <p>The <code>leftPrec</code> and <code>rightPrec</code> parameters give |
| us enough context to decide whether we need to enclose the expression in |
| parentheses. For example, we need parentheses around "2 + 3" if preceded |
| by "5 *". This is because the precedence of the "*" operator is greater |
| than the precedence of the "+" operator. |
| |
| <p>The algorithm handles left- and right-associative operators by giving |
| them slightly different left- and right-precedence. |
| |
| <p>If <a href="SqlWriter.html#isAlwaysUseParentheses()"><code>SqlWriter.isAlwaysUseParentheses()</code></a> is true, we use |
| parentheses even when they are not required by the precedence rules. |
| |
| <p>For the details of this algorithm, see <a href="SqlCall.html#unparse(org.apache.calcite.sql.SqlWriter,int,int)"><code>SqlCall.unparse(org.apache.calcite.sql.SqlWriter, int, int)</code></a>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="SqlCall.html#unparse(org.apache.calcite.sql.SqlWriter,int,int)">unparse</a></code> in class <code><a href="SqlCall.html" title="class in org.apache.calcite.sql">SqlCall</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>writer</code> - Target writer</dd> |
| <dd><code>leftPrec</code> - The precedence of the <a href="SqlNode.html" title="class in org.apache.calcite.sql"><code>SqlNode</code></a> immediately |
| preceding this node in a depth-first scan of the parse |
| tree</dd> |
| <dd><code>rightPrec</code> - The precedence of the <a href="SqlNode.html" title="class in org.apache.calcite.sql"><code>SqlNode</code></a> immediately</dd> |
| </dl> |
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