| <!DOCTYPE HTML> |
| <!-- NewPage --> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc --> |
| <title>ContentCache</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-3.5.1.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="ContentCache"; |
| } |
| } |
| catch(err) { |
| } |
| //--> |
| var data = {"i0":10,"i1":10,"i2":10,"i3":10,"i4":10,"i5":10,"i6":10,"i7":10,"i8":10,"i9":10,"i10":10,"i11":10}; |
| var tabs = {65535:["t0","All Methods"],2:["t2","Instance Methods"],8:["t4","Concrete 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="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>Nested | </li> |
| <li>Field | </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>Field | </li> |
| <li><a href="#constructor.detail">Constr</a> | </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.iceberg.io</a></div> |
| <h2 title="Class ContentCache" class="title">Class ContentCache</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.iceberg.io.ContentCache</li> |
| </ul> |
| </li> |
| </ul> |
| <div class="description"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <hr> |
| <pre>public class <span class="typeNameLabel">ContentCache</span> |
| extends java.lang.Object</pre> |
| <div class="block">Class that provides file-content caching during reading. |
| |
| <p>The file-content caching is initiated by calling <a href="#tryCache(org.apache.iceberg.io.FileIO,java.lang.String,long)"><code>tryCache(FileIO, String, |
| long)</code></a>. Given a FileIO, a file location string, and file length that is within allowed limit, |
| ContentCache will return a <code>ContentCache.CachingInputFile</code> that is backed by the cache. Calling <code>ContentCache.CachingInputFile.newStream()</code> will return a <a href="ByteBufferInputStream.html" title="class in org.apache.iceberg.io"><code>ByteBufferInputStream</code></a> backed by list of |
| <code>ByteBuffer</code> from the cache if such file-content exist in the cache. If the file-content |
| does not exist in the cache yet, a regular InputFile will be instantiated, read-ahead, and loaded |
| into the cache before returning ByteBufferInputStream. The regular InputFile is also used as a |
| fallback if cache loading fail.</div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="constructor.summary"> |
| <!-- --> |
| </a> |
| <h3>Constructor Summary</h3> |
| <table class="memberSummary"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <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(long,long,long)">ContentCache</a></span>​(long expireAfterAccessMs, |
| long maxTotalBytes, |
| long maxContentLength)</code></th> |
| <td class="colLast"> |
| <div class="block">Constructor for ContentCache class.</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="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>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#cleanUp()">cleanUp</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#estimatedCacheSize()">estimatedCacheSize</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#expireAfterAccess()">expireAfterAccess</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>org.apache.iceberg.io.ContentCache.CacheEntry</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#get(java.lang.String,java.util.function.Function)">get</a></span>​(java.lang.String key, |
| java.util.function.Function<java.lang.String,​org.apache.iceberg.io.ContentCache.CacheEntry> mappingFunction)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>org.apache.iceberg.io.ContentCache.CacheEntry</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getIfPresent(java.lang.String)">getIfPresent</a></span>​(java.lang.String location)</code></th> |
| <td class="colLast"> </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="#invalidate(java.lang.String)">invalidate</a></span>​(java.lang.String key)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#invalidateAll()">invalidateAll</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#maxContentLength()">maxContentLength</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#maxTotalBytes()">maxTotalBytes</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>com.github.benmanes.caffeine.cache.stats.CacheStats</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#stats()">stats</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>java.lang.String</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString()">toString</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code><a href="InputFile.html" title="interface in org.apache.iceberg.io">InputFile</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#tryCache(org.apache.iceberg.io.FileIO,java.lang.String,long)">tryCache</a></span>​(<a href="FileIO.html" title="interface in org.apache.iceberg.io">FileIO</a> io, |
| java.lang.String location, |
| long length)</code></th> |
| <td class="colLast"> |
| <div class="block">Try cache the file-content of file in the given location upon stream reading.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a id="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</code></li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="constructor.detail"> |
| <!-- --> |
| </a> |
| <h3>Constructor Detail</h3> |
| <a id="<init>(long,long,long)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>ContentCache</h4> |
| <pre>public ContentCache​(long expireAfterAccessMs, |
| long maxTotalBytes, |
| long maxContentLength)</pre> |
| <div class="block">Constructor for ContentCache class.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>expireAfterAccessMs</code> - controls the duration for which entries in the ContentCache are hold |
| since last access. Must be greater or equal than 0. Setting 0 means cache entries expire |
| only if it gets evicted due to memory pressure.</dd> |
| <dd><code>maxTotalBytes</code> - controls the maximum total amount of bytes to cache in ContentCache. Must |
| be greater than 0.</dd> |
| <dd><code>maxContentLength</code> - controls the maximum length of file to be considered for caching. Must |
| be greater than 0.</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| <!-- ============ METHOD DETAIL ========== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a id="expireAfterAccess()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>expireAfterAccess</h4> |
| <pre class="methodSignature">public long expireAfterAccess()</pre> |
| </li> |
| </ul> |
| <a id="maxContentLength()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>maxContentLength</h4> |
| <pre class="methodSignature">public long maxContentLength()</pre> |
| </li> |
| </ul> |
| <a id="maxTotalBytes()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>maxTotalBytes</h4> |
| <pre class="methodSignature">public long maxTotalBytes()</pre> |
| </li> |
| </ul> |
| <a id="stats()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>stats</h4> |
| <pre class="methodSignature">public com.github.benmanes.caffeine.cache.stats.CacheStats stats()</pre> |
| </li> |
| </ul> |
| <a id="get(java.lang.String,java.util.function.Function)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>get</h4> |
| <pre class="methodSignature">public org.apache.iceberg.io.ContentCache.CacheEntry get​(java.lang.String key, |
| java.util.function.Function<java.lang.String,​org.apache.iceberg.io.ContentCache.CacheEntry> mappingFunction)</pre> |
| </li> |
| </ul> |
| <a id="getIfPresent(java.lang.String)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getIfPresent</h4> |
| <pre class="methodSignature">public org.apache.iceberg.io.ContentCache.CacheEntry getIfPresent​(java.lang.String location)</pre> |
| </li> |
| </ul> |
| <a id="tryCache(org.apache.iceberg.io.FileIO,java.lang.String,long)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>tryCache</h4> |
| <pre class="methodSignature">public <a href="InputFile.html" title="interface in org.apache.iceberg.io">InputFile</a> tryCache​(<a href="FileIO.html" title="interface in org.apache.iceberg.io">FileIO</a> io, |
| java.lang.String location, |
| long length)</pre> |
| <div class="block">Try cache the file-content of file in the given location upon stream reading. |
| |
| <p>If length is longer than maximum length allowed by ContentCache, a regular <a href="InputFile.html" title="interface in org.apache.iceberg.io"><code>InputFile</code></a> |
| and no caching will be done for that file. Otherwise, this method will return a <code>ContentCache.CachingInputFile</code> that serve file reads backed by ContentCache.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>io</code> - a FileIO associated with the location.</dd> |
| <dd><code>location</code> - URL/path of a file accessible by io.</dd> |
| <dd><code>length</code> - the known length of such file.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a <code>ContentCache.CachingInputFile</code> if length is within allowed limit. Otherwise, a regular |
| <a href="InputFile.html" title="interface in org.apache.iceberg.io"><code>InputFile</code></a> for given location.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="invalidate(java.lang.String)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>invalidate</h4> |
| <pre class="methodSignature">public void invalidate​(java.lang.String key)</pre> |
| </li> |
| </ul> |
| <a id="invalidateAll()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>invalidateAll</h4> |
| <pre class="methodSignature">public void invalidateAll()</pre> |
| </li> |
| </ul> |
| <a id="cleanUp()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>cleanUp</h4> |
| <pre class="methodSignature">public void cleanUp()</pre> |
| </li> |
| </ul> |
| <a id="estimatedCacheSize()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>estimatedCacheSize</h4> |
| <pre class="methodSignature">public long estimatedCacheSize()</pre> |
| </li> |
| </ul> |
| <a id="toString()"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>toString</h4> |
| <pre class="methodSignature">public java.lang.String toString()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>toString</code> in class <code>java.lang.Object</code></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="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>Nested | </li> |
| <li>Field | </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>Field | </li> |
| <li><a href="#constructor.detail">Constr</a> | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a id="skip.navbar.bottom"> |
| <!-- --> |
| </a></div> |
| <!-- ======== END OF BOTTOM NAVBAR ======= --> |
| </nav> |
| </footer> |
| </body> |
| </html> |