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SaveToCache Method


Saves the document to the cache.

public void SaveToCache() 
   void SaveToCache() 
public void saveToCache() 
def SaveToCache(self): 

Documents can contain many pages and huge amounts of data. Storing all this data in the physical memory is not feasible in most situations. Therefore, the LEADDocument class was designed to use an external caching system to store the modified document. Refer to DocumentFactory.Cache for more information.

HasCache determines if this document is using the cache system. SaveToCache can be used to save a document to the cache and re-load it with DocumentFactory.LoadFromCache.

Set AutoDeleteFromCache to true if your application uses caching to speed up processing the document and the object will not be used after it is disposed.

Set AutoDeleteFromCache to false if your application will save the document ID before disposing the document, and use it to re-load the document by calling DocumentFactory.LoadFromCache.

To save the document to the cache, call SaveToCache or set the value of AutoSaveToCache to true before disposing the document.

The document is only saved into the cache if the value of CacheStatus is DocumentCacheStatus.NotSynced. When SaveToCache returns successfully, the value of CacheStatus of the document will be DocumentCacheStatus and will contain the timestamp of the operation.

Refer to Document Toolkit and Caching for more information.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Document.Writer; 
using Leadtools.Document; 
using Leadtools.Caching; 
using Leadtools.Annotations.Engine; 
using Leadtools.Ocr; 
using Leadtools.Barcode; 
using Leadtools.Document.Converter; 
public void DocumentIdExample() 
   var cache = GetCache(); 
   var policy = new CacheItemPolicy(); 
   policy.AbsoluteExpiration = DateTime.Now + new TimeSpan(0, 0, 10); 
   policy.SlidingExpiration = new TimeSpan(0, 0, 10); 
   var options = new LoadDocumentOptions(); 
   options.Cache = cache; 
   options.CachePolicy = policy; 
   string documentId = null; 
   using (var document = DocumentFactory.LoadFromFile(Path.Combine(LEAD_VARS.ImagesDir, "Leadtools.pdf"), options)) 
      document.AutoDeleteFromCache = false; 
      documentId = document.DocumentId; 
   var loadFromCacheOptions = new LoadFromCacheOptions(); 
   loadFromCacheOptions.Cache = cache; 
   loadFromCacheOptions.DocumentId = documentId; 
   using (var document = DocumentFactory.LoadFromCache(loadFromCacheOptions)) 
      if (null != document) 
         document.AutoDeleteFromCache = true;//will be deleted 
static class LEAD_VARS 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
import java.io.File; 
import java.io.FileOutputStream; 
import java.io.IOException; 
import java.net.MalformedURLException; 
import java.net.URI; 
import java.net.URISyntaxException; 
import java.net.URL; 
import java.nio.file.Files; 
import java.nio.file.Paths; 
import java.util.ArrayList; 
import java.util.Calendar; 
import java.util.List; 
import java.util.concurrent.Callable; 
import java.util.concurrent.ExecutorService; 
import java.util.concurrent.Executors; 
import java.util.concurrent.Future; 
import java.util.regex.Pattern; 
import org.junit.*; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
import leadtools.*; 
import leadtools.annotations.engine.*; 
import leadtools.barcode.*; 
import leadtools.caching.*; 
import leadtools.codecs.*; 
import leadtools.document.*; 
import leadtools.document.DocumentMimeTypes.UserGetDocumentStatusHandler; 
import leadtools.document.converter.*; 
import leadtools.document.writer.*; 
import leadtools.ocr.*; 
public void documentIdExample() { 
   final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
   FileCache cache = getCache(); 
   CacheItemPolicy policy = new CacheItemPolicy(); 
   Calendar calendar = Calendar.getInstance(); 
   calendar.add(Calendar.SECOND, 10); 
   LoadDocumentOptions options = new LoadDocumentOptions(); 
   String documentId = null; 
   LEADDocument document = DocumentFactory.loadFromFile(combine(LEAD_VARS_IMAGES_DIR, "Leadtools.pdf"), options); 
   documentId = document.getDocumentId(); 
   LoadFromCacheOptions loadFromCacheOptions = new LoadFromCacheOptions(); 
   document = DocumentFactory.loadFromCache(loadFromCacheOptions); 
   if (null != document) { 
      document.setAutoDeleteFromCache(true);// will be deleted 

Target Platforms

Help Version 23.0.2024.2.29
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Leadtools.Document Assembly

Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.