| <!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 --> |
| <title>SchemaCreate (Apache Beam 2.38.0-SNAPSHOT)</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="SchemaCreate (Apache Beam 2.38.0-SNAPSHOT)"; |
| } |
| } |
| catch(err) { |
| } |
| //--> |
| </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="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/beam/sdk/schemas/annotations/SchemaCaseFormat.html" title="annotation in org.apache.beam.sdk.schemas.annotations"><span class="typeNameLink">Prev Class</span></a></li> |
| <li><a href="../../../../../../org/apache/beam/sdk/schemas/annotations/SchemaFieldName.html" title="annotation in org.apache.beam.sdk.schemas.annotations"><span class="typeNameLink">Next Class</span></a></li> |
| </ul> |
| <ul class="navList"> |
| <li><a href="../../../../../../index.html?org/apache/beam/sdk/schemas/annotations/SchemaCreate.html" target="_top">Frames</a></li> |
| <li><a href="SchemaCreate.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>Field | </li> |
| <li>Required | </li> |
| <li>Optional</li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li>Field | </li> |
| <li>Element</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.beam.sdk.schemas.annotations</div> |
| <h2 title="Annotation Type SchemaCreate" class="title">Annotation Type SchemaCreate</h2> |
| </div> |
| <div class="contentContainer"> |
| <div class="description"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <hr> |
| <br> |
| <pre>@Documented |
| @Retention(value=RUNTIME) |
| @Target(value={CONSTRUCTOR,METHOD}) |
| <a href="../../../../../../org/apache/beam/sdk/annotations/Experimental.html" title="annotation in org.apache.beam.sdk.annotations">@Experimental</a>(<a href="../../../../../../org/apache/beam/sdk/annotations/Experimental.html#value--">value</a>=<a href="../../../../../../org/apache/beam/sdk/annotations/Experimental.Kind.html#SCHEMAS">SCHEMAS</a>) |
| public @interface <span class="memberNameLabel">SchemaCreate</span></pre> |
| <div class="block">Can be put on a constructor or a static method, in which case that constructor or method will be |
| used to created instance of the class by Beam's schema code. |
| |
| <p>For example, the following Java POJO. |
| |
| <pre><code> |
| @DefaultSchema(JavaBeanSchema.class) |
| class MyClass { |
| public final String user; |
| public final int age; |
| |
| @SchemaCreate |
| public MyClass(String user, int age) { |
| this.user = user; |
| this.age = age; |
| } |
| } |
| </code></pre> |
| |
| <p>This tells Beam that this constructor can be used to construct instances. Beam will match up |
| the names of the constructor arguments to schema fields in order to decide how to create the |
| class from a Row. |
| |
| <p>This can also be used to annotate a static factory method on the class. For example: |
| |
| <pre><code> |
| @DefaultSchema(JavaBeanSchema.class) |
| class MyClass { |
| public final String user; |
| public final int age; |
| |
| private MyClass(String user, int age) { this.user = user; this.age = age; } |
| |
| @SchemaCreate |
| public static MyClass create(String user, int age) { |
| return new MyClass(user, age); |
| } |
| } |
| </code></pre></div> |
| </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="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/beam/sdk/schemas/annotations/SchemaCaseFormat.html" title="annotation in org.apache.beam.sdk.schemas.annotations"><span class="typeNameLink">Prev Class</span></a></li> |
| <li><a href="../../../../../../org/apache/beam/sdk/schemas/annotations/SchemaFieldName.html" title="annotation in org.apache.beam.sdk.schemas.annotations"><span class="typeNameLink">Next Class</span></a></li> |
| </ul> |
| <ul class="navList"> |
| <li><a href="../../../../../../index.html?org/apache/beam/sdk/schemas/annotations/SchemaCreate.html" target="_top">Frames</a></li> |
| <li><a href="SchemaCreate.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>Field | </li> |
| <li>Required | </li> |
| <li>Optional</li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li>Field | </li> |
| <li>Element</li> |
| </ul> |
| </div> |
| <a name="skip.navbar.bottom"> |
| <!-- --> |
| </a></div> |
| <!-- ======== END OF BOTTOM NAVBAR ======= --> |
| </body> |
| </html> |