| <!DOCTYPE HTML> |
| <!-- NewPage --> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc --> |
| <title>Schema (Apache Calcite API)</title> |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> |
| <link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="Style"> |
| <link rel="stylesheet" type="text/css" href="../../../../jquery/jquery-ui.css" title="Style"> |
| <script type="text/javascript" src="../../../../script.js"></script> |
| <script type="text/javascript" src="../../../../jquery/jszip/dist/jszip.min.js"></script> |
| <script type="text/javascript" src="../../../../jquery/jszip-utils/dist/jszip-utils.min.js"></script> |
| <!--[if IE]> |
| <script type="text/javascript" src="../../../../jquery/jszip-utils/dist/jszip-utils-ie.min.js"></script> |
| <![endif]--> |
| <script type="text/javascript" src="../../../../jquery/jquery-3.3.1.js"></script> |
| <script type="text/javascript" src="../../../../jquery/jquery-migrate-3.0.1.js"></script> |
| <script type="text/javascript" src="../../../../jquery/jquery-ui.js"></script> |
| </head> |
| <body> |
| <script type="text/javascript"><!-- |
| try { |
| if (location.href.indexOf('is-external=true') == -1) { |
| parent.document.title="Schema (Apache Calcite API)"; |
| } |
| } |
| catch(err) { |
| } |
| //--> |
| var data = {"i0":6,"i1":6,"i2":6,"i3":6,"i4":6,"i5":6,"i6":6,"i7":6,"i8":6,"i9":6,"i10":6}; |
| var tabs = {65535:["t0","All Methods"],2:["t2","Instance Methods"],4:["t3","Abstract Methods"]}; |
| var altColor = "altColor"; |
| var rowColor = "rowColor"; |
| var tableTab = "tableTab"; |
| var activeTableTab = "activeTableTab"; |
| var pathtoroot = "../../../../"; |
| var useModuleDirectories = true; |
| loadScripts(document, 'script');</script> |
| <noscript> |
| <div>JavaScript is disabled on your browser.</div> |
| </noscript> |
| <header role="banner"> |
| <nav role="navigation"> |
| <div class="fixedNav"> |
| <!-- ========= START OF TOP NAVBAR ======= --> |
| <div class="topNav"><a id="navbar.top"> |
| <!-- --> |
| </a> |
| <div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div> |
| <a id="navbar.top.firstrow"> |
| <!-- --> |
| </a> |
| <ul class="navList" title="Navigation"> |
| <li><a href="../../../../index.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="navBarCell1Rev">Class</li> |
| <li><a href="class-use/Schema.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" id="allclasses_navbar_top"> |
| <li><a href="../../../../allclasses.html">All Classes</a></li> |
| </ul> |
| <ul class="navListSearch"> |
| <li><label for="search">SEARCH:</label> |
| <input type="text" id="search" value="search" disabled="disabled"> |
| <input type="reset" id="reset" value="reset" disabled="disabled"> |
| </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> |
| <noscript> |
| <div>JavaScript is disabled on your browser.</div> |
| </noscript> |
| </div> |
| <div> |
| <ul class="subNavList"> |
| <li>Summary: </li> |
| <li><a href="#nested.class.summary">Nested</a> | </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a id="skip.navbar.top"> |
| <!-- --> |
| </a></div> |
| <!-- ========= END OF TOP NAVBAR ========= --> |
| </div> |
| <div class="navPadding"> </div> |
| <script type="text/javascript"><!-- |
| $('.navPadding').css('padding-top', $('.fixedNav').css("height")); |
| //--> |
| </script> |
| </nav> |
| </header> |
| <!-- ======== START OF CLASS DATA ======== --> |
| <main role="main"> |
| <div class="header"> |
| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.schema</a></div> |
| <h2 title="Interface Schema" class="title">Interface Schema</h2> |
| </div> |
| <div class="contentContainer"> |
| <div class="description"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <dl> |
| <dt>All Known Subinterfaces:</dt> |
| <dd><code><a href="SchemaPlus.html" title="interface in org.apache.calcite.schema">SchemaPlus</a></code>, <code><a href="SemiMutableSchema.html" title="interface in org.apache.calcite.schema">SemiMutableSchema</a></code></dd> |
| </dl> |
| <dl> |
| <dt>All Known Implementing Classes:</dt> |
| <dd><code><a href="impl/AbstractSchema.html" title="class in org.apache.calcite.schema.impl">AbstractSchema</a></code>, <code><a href="../jdbc/CalciteConnectionImpl.RootSchema.html" title="class in org.apache.calcite.jdbc">CalciteConnectionImpl.RootSchema</a></code>, <code><a href="../jdbc/CalciteSchema.SchemaPlusImpl.html" title="class in org.apache.calcite.jdbc">CalciteSchema.SchemaPlusImpl</a></code>, <code><a href="../adapter/cassandra/CassandraSchema.html" title="class in org.apache.calcite.adapter.cassandra">CassandraSchema</a></code>, <code><a href="../adapter/clone/CloneSchema.html" title="class in org.apache.calcite.adapter.clone">CloneSchema</a></code>, <code><a href="../adapter/csv/CsvSchema.html" title="class in org.apache.calcite.adapter.csv">CsvSchema</a></code>, <code><a href="impl/DelegatingSchema.html" title="class in org.apache.calcite.schema.impl">DelegatingSchema</a></code>, <code><a href="../adapter/druid/DruidSchema.html" title="class in org.apache.calcite.adapter.druid">DruidSchema</a></code>, <code><a href="../adapter/elasticsearch/ElasticsearchSchema.html" title="class in org.apache.calcite.adapter.elasticsearch">ElasticsearchSchema</a></code>, <code><a href="../adapter/file/FileSchema.html" title="class in org.apache.calcite.adapter.file">FileSchema</a></code>, <code><a href="../adapter/geode/rel/GeodeSchema.html" title="class in org.apache.calcite.adapter.geode.rel">GeodeSchema</a></code>, <code><a href="../adapter/geode/simple/GeodeSimpleSchema.html" title="class in org.apache.calcite.adapter.geode.simple">GeodeSimpleSchema</a></code>, <code><a href="../adapter/jdbc/JdbcCatalogSchema.html" title="class in org.apache.calcite.adapter.jdbc">JdbcCatalogSchema</a></code>, <code><a href="../adapter/jdbc/JdbcSchema.html" title="class in org.apache.calcite.adapter.jdbc">JdbcSchema</a></code>, <code><a href="../jdbc/MetadataSchema.html" title="class in org.apache.calcite.jdbc">MetadataSchema</a></code>, <code><a href="../adapter/mongodb/MongoSchema.html" title="class in org.apache.calcite.adapter.mongodb">MongoSchema</a></code>, <code><a href="../adapter/pig/PigSchema.html" title="class in org.apache.calcite.adapter.pig">PigSchema</a></code>, <code><a href="../adapter/java/ReflectiveSchema.html" title="class in org.apache.calcite.adapter.java">ReflectiveSchema</a></code>, <code><a href="../prepare/RelOptTableImpl.MySchemaPlus.html" title="class in org.apache.calcite.prepare">RelOptTableImpl.MySchemaPlus</a></code>, <code><a href="../adapter/splunk/SplunkSchema.html" title="class in org.apache.calcite.adapter.splunk">SplunkSchema</a></code>, <code><a href="../adapter/tpcds/TpcdsSchema.html" title="class in org.apache.calcite.adapter.tpcds">TpcdsSchema</a></code>, <code><a href="../adapter/tpch/TpchSchema.html" title="class in org.apache.calcite.adapter.tpch">TpchSchema</a></code></dd> |
| </dl> |
| <hr> |
| <pre>public interface <span class="typeNameLabel">Schema</span></pre> |
| <div class="block">A namespace for tables and functions. |
| |
| <p>A schema can also contain sub-schemas, to any level of nesting. Most |
| providers have a limited number of levels; for example, most JDBC databases |
| have either one level ("schemas") or two levels ("database" and |
| "catalog").</p> |
| |
| <p>There may be multiple overloaded functions with the same name but |
| different numbers or types of parameters. |
| For this reason, <a href="#getFunctions(java.lang.String)"><code>getFunctions(java.lang.String)</code></a> returns a list of all |
| members with the same name. Calcite will call |
| <a href="Schemas.html#resolve(org.apache.calcite.rel.type.RelDataTypeFactory,java.lang.String,java.util.Collection,java.util.List)"><code>Schemas.resolve(org.apache.calcite.rel.type.RelDataTypeFactory, String, java.util.Collection, java.util.List)</code></a> |
| to choose the appropriate one.</p> |
| |
| <p>The most common and important type of member is the one with no |
| arguments and a result type that is a collection of records. This is called a |
| <dfn>relation</dfn>. It is equivalent to a table in a relational |
| database.</p> |
| |
| <p>For example, the query</p> |
| |
| <blockquote>select * from sales.emps</blockquote> |
| |
| <p>is valid if "sales" is a registered |
| schema and "emps" is a member with zero parameters and a result type |
| of <code>Collection(Record(int: "empno", String: "name"))</code>.</p> |
| |
| <p>A schema may be nested within another schema; see |
| <a href="#getSubSchema(java.lang.String)"><code>getSubSchema(String)</code></a>.</p></div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ======== NESTED CLASS SUMMARY ======== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="nested.class.summary"> |
| <!-- --> |
| </a> |
| <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">Interface</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="Schema.TableType.html" title="enum in org.apache.calcite.schema">Schema.TableType</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Table type.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="method.summary"> |
| <!-- --> |
| </a> |
| <h3>Method Summary</h3> |
| <table class="memberSummary"> |
| <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></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><a href="../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getExpression(org.apache.calcite.schema.SchemaPlus,java.lang.String)">getExpression</a></span>​(<a href="SchemaPlus.html" title="interface in org.apache.calcite.schema">SchemaPlus</a> parentSchema, |
| java.lang.String name)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the expression by which this schema can be referenced in generated |
| code.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>java.util.Set<java.lang.String></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getFunctionNames()">getFunctionNames</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the names of the functions in this schema.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>java.util.Collection<<a href="Function.html" title="interface in org.apache.calcite.schema">Function</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getFunctions(java.lang.String)">getFunctions</a></span>​(java.lang.String name)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a list of functions in this schema with the given name, or |
| an empty list if there is no such function.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="Schema.html" title="interface in org.apache.calcite.schema">Schema</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSubSchema(java.lang.String)">getSubSchema</a></span>​(java.lang.String name)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a sub-schema with a given name, or null.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>java.util.Set<java.lang.String></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSubSchemaNames()">getSubSchemaNames</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the names of this schema's child schemas.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <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(java.lang.String)">getTable</a></span>​(java.lang.String name)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a table with a given name, or null if not found.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>java.util.Set<java.lang.String></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTableNames()">getTableNames</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the names of the tables in this schema.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code><a href="../rel/type/RelProtoDataType.html" title="interface in org.apache.calcite.rel.type">RelProtoDataType</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getType(java.lang.String)">getType</a></span>​(java.lang.String name)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a type with a given name, or null if not found.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>java.util.Set<java.lang.String></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTypeNames()">getTypeNames</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the names of the types in this schema.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isMutable()">isMutable</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether the user is allowed to create new tables, functions |
| and sub-schemas in this schema, in addition to those returned automatically |
| by methods such as <a href="#getTable(java.lang.String)"><code>getTable(String)</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code><a href="Schema.html" title="interface in org.apache.calcite.schema">Schema</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#snapshot(org.apache.calcite.schema.SchemaVersion)">snapshot</a></span>​(<a href="SchemaVersion.html" title="interface in org.apache.calcite.schema">SchemaVersion</a> version)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the snapshot of this schema as of the specified time.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a id="getTable(java.lang.String)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getTable</h4> |
| <pre class="methodSignature"><a href="Table.html" title="interface in org.apache.calcite.schema">Table</a> getTable​(java.lang.String name)</pre> |
| <div class="block">Returns a table with a given name, or null if not found.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - Table name</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Table, or null</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getTableNames()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getTableNames</h4> |
| <pre class="methodSignature">java.util.Set<java.lang.String> getTableNames()</pre> |
| <div class="block">Returns the names of the tables in this schema.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Names of the tables in this schema</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getType(java.lang.String)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getType</h4> |
| <pre class="methodSignature"><a href="../rel/type/RelProtoDataType.html" title="interface in org.apache.calcite.rel.type">RelProtoDataType</a> getType​(java.lang.String name)</pre> |
| <div class="block">Returns a type with a given name, or null if not found.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - Table name</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Table, or null</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getTypeNames()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getTypeNames</h4> |
| <pre class="methodSignature">java.util.Set<java.lang.String> getTypeNames()</pre> |
| <div class="block">Returns the names of the types in this schema.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Names of the tables in this schema</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getFunctions(java.lang.String)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getFunctions</h4> |
| <pre class="methodSignature">java.util.Collection<<a href="Function.html" title="interface in org.apache.calcite.schema">Function</a>> getFunctions​(java.lang.String name)</pre> |
| <div class="block">Returns a list of functions in this schema with the given name, or |
| an empty list if there is no such function.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - Name of function</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>List of functions with given name, or empty list</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getFunctionNames()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getFunctionNames</h4> |
| <pre class="methodSignature">java.util.Set<java.lang.String> getFunctionNames()</pre> |
| <div class="block">Returns the names of the functions in this schema.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Names of the functions in this schema</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getSubSchema(java.lang.String)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getSubSchema</h4> |
| <pre class="methodSignature"><a href="Schema.html" title="interface in org.apache.calcite.schema">Schema</a> getSubSchema​(java.lang.String name)</pre> |
| <div class="block">Returns a sub-schema with a given name, or null.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - Sub-schema name</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Sub-schema with a given name, or null</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getSubSchemaNames()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getSubSchemaNames</h4> |
| <pre class="methodSignature">java.util.Set<java.lang.String> getSubSchemaNames()</pre> |
| <div class="block">Returns the names of this schema's child schemas.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Names of this schema's child schemas</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getExpression(org.apache.calcite.schema.SchemaPlus,java.lang.String)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getExpression</h4> |
| <pre class="methodSignature"><a href="../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> getExpression​(<a href="SchemaPlus.html" title="interface in org.apache.calcite.schema">SchemaPlus</a> parentSchema, |
| java.lang.String name)</pre> |
| <div class="block">Returns the expression by which this schema can be referenced in generated |
| code.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>parentSchema</code> - Parent schema</dd> |
| <dd><code>name</code> - Name of this schema</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Expression by which this schema can be referenced in generated code</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="isMutable()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isMutable</h4> |
| <pre class="methodSignature">boolean isMutable()</pre> |
| <div class="block">Returns whether the user is allowed to create new tables, functions |
| and sub-schemas in this schema, in addition to those returned automatically |
| by methods such as <a href="#getTable(java.lang.String)"><code>getTable(String)</code></a>. |
| |
| <p>Even if this method returns true, the maps are not modified. Calcite |
| stores the defined objects in a wrapper object.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Whether the user is allowed to create new tables, functions |
| and sub-schemas in this schema</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="snapshot(org.apache.calcite.schema.SchemaVersion)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>snapshot</h4> |
| <pre class="methodSignature"><a href="Schema.html" title="interface in org.apache.calcite.schema">Schema</a> snapshot​(<a href="SchemaVersion.html" title="interface in org.apache.calcite.schema">SchemaVersion</a> version)</pre> |
| <div class="block">Returns the snapshot of this schema as of the specified time. The |
| contents of the schema snapshot should not change over time.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>version</code> - The current schema version</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the schema snapshot.</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </main> |
| <!-- ========= END OF CLASS DATA ========= --> |
| <footer role="contentinfo"> |
| <nav role="navigation"> |
| <!-- ======= START OF BOTTOM NAVBAR ====== --> |
| <div class="bottomNav"><a id="navbar.bottom"> |
| <!-- --> |
| </a> |
| <div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> |
| <a id="navbar.bottom.firstrow"> |
| <!-- --> |
| </a> |
| <ul class="navList" title="Navigation"> |
| <li><a href="../../../../index.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="navBarCell1Rev">Class</li> |
| <li><a href="class-use/Schema.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" id="allclasses_navbar_bottom"> |
| <li><a href="../../../../allclasses.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> |
| <noscript> |
| <div>JavaScript is disabled on your browser.</div> |
| </noscript> |
| </div> |
| <div> |
| <ul class="subNavList"> |
| <li>Summary: </li> |
| <li><a href="#nested.class.summary">Nested</a> | </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a id="skip.navbar.bottom"> |
| <!-- --> |
| </a></div> |
| <!-- ======== END OF BOTTOM NAVBAR ======= --> |
| </nav> |
| <p class="legalCopy"><small>Copyright © 2012–2019 <a href="https://www.apache.org/">The Apache Software Foundation</a>. All rights reserved.</small></p> |
| </footer> |
| </body> |
| </html> |
