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IsVirtual Property

Summary

Indicates that this document is virtual.

Syntax
C#
C++/CLI
Python
public bool IsVirtual { get; set; } 
public:  
   property bool IsVirtual 
   { 
      bool get() 
      void set(bool value) 
   } 
IsVirtual # get and set (DocumentCacheInfo) 

Property Value

true if this document is virtual; otherwise, false.

Remarks

If the value of IsVirtual is true, then this document was originally created using DocumentFactory.Create. In this case, the document does not have an original file associated with it.

Example
C#
Java
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 GetDocumentCacheInfoExample() 
{ 
   string documentFile = Path.Combine(LEAD_VARS.ImagesDir, "Leadtools.pdf"); 
 
   // Setup a cache 
   FileCache cache = new FileCache(); 
   cache.CacheDirectory = @"c:\cache-dir"; 
 
   // We will use this document ID 
   const string documentId = "test-document"; 
 
   // Ensure that the document does not exist in the cache 
   var deleteFromCacheOptions = new LoadFromCacheOptions(); 
   deleteFromCacheOptions.Cache = cache; 
   deleteFromCacheOptions.DocumentId = documentId; 
   DocumentFactory.DeleteFromCache(deleteFromCacheOptions); 
 
   DocumentCacheInfo cacheInfo; 
 
   // Now get the info for this document, it should not exist 
   cacheInfo = DocumentFactory.GetDocumentCacheInfo(cache, documentId); 
   Debug.Assert(cacheInfo == null); 
 
   // Next, upload a document into this cache 
   var uploadDocumentOptions = new UploadDocumentOptions(); 
   uploadDocumentOptions.Cache = cache; 
   uploadDocumentOptions.DocumentId = documentId; 
   uploadDocumentOptions.Name = "Leadtools.pdf"; 
   Uri uploadUri = DocumentFactory.BeginUpload(uploadDocumentOptions); 
   using (var stream = File.OpenRead(documentFile)) 
   { 
      var buffer = new byte[stream.Length]; 
      stream.Read(buffer, 0, buffer.Length); 
      DocumentFactory.UploadDocument(cache, uploadUri, buffer, 0, buffer.Length); 
   } 
   DocumentFactory.EndUpload(cache, uploadUri); 
 
   // Now check the info again, it should be there but not loaded 
   cacheInfo = DocumentFactory.GetDocumentCacheInfo(cache, documentId); 
   // DocumentCacheInfo reference 
   Console.WriteLine("After upload"); 
   Console.WriteLine("   DocumentId:" + cacheInfo.DocumentId); 
   Console.WriteLine("   Name:" + cacheInfo.Name); 
   Console.WriteLine("   IsLoaded:" + cacheInfo.IsLoaded); 
   Console.WriteLine("   Annotations data length:" + cacheInfo.AnnotationsDataLength); 
   Console.WriteLine("   Document data length:" + cacheInfo.DocumentDataLength); 
   Console.WriteLine("   Has annotations:" + cacheInfo.HasAnnotations); 
   Console.WriteLine("   Has user token:" + cacheInfo.HasUserToken); 
   Console.WriteLine("   Is virtual:" + cacheInfo.IsVirtual); 
   Console.WriteLine("   Mime Type:" + cacheInfo.MimeType); 
   Console.WriteLine("   Mime Type status:" + cacheInfo.MimeTypeStatus); 
   Console.WriteLine("   Page count:" + cacheInfo.PageCount); 
   Debug.Assert(cacheInfo.DocumentId == documentId); 
   Debug.Assert(cacheInfo.Name == "Leadtools.pdf"); 
   Debug.Assert(!cacheInfo.IsLoaded); 
   Debug.Assert(cacheInfo.AnnotationsDataLength == 0); 
   Debug.Assert(cacheInfo.DocumentDataLength == 90301); 
   Debug.Assert(!cacheInfo.HasAnnotations); 
   Debug.Assert(!cacheInfo.HasUserToken); 
   Debug.Assert(!cacheInfo.IsVirtual); 
   Debug.Assert(cacheInfo.MimeType == null); 
   Debug.Assert(cacheInfo.MimeTypeStatus == DocumentMimeTypeStatus.Unspecified); 
   Debug.Assert(cacheInfo.PageCount == 0); 
 
   // Next load this document 
   var loadDocumentOptions = new LoadDocumentOptions(); 
   loadDocumentOptions.Cache = cache; 
   using (var document = DocumentFactory.LoadFromUri(uploadUri, loadDocumentOptions)) 
   { 
      // Save it to the cache 
      document.AutoSaveToCache = false; 
      document.AutoDeleteFromCache = false; 
      document.SaveToCache(); 
   } 
 
   // Now get its info again, it should be there and loaded 
   cacheInfo = DocumentFactory.GetDocumentCacheInfo(cache, documentId); 
   Console.WriteLine("After load"); 
   Console.WriteLine("   DocumentId:" + cacheInfo.DocumentId); 
   Console.WriteLine("   Name:" + cacheInfo.Name); 
   Console.WriteLine("   IsLoaded:" + cacheInfo.IsLoaded); 
   Console.WriteLine("   Annotations data length:" + cacheInfo.AnnotationsDataLength); 
   Console.WriteLine("   Document data length:" + cacheInfo.DocumentDataLength); 
   Console.WriteLine("   Has annotations:" + cacheInfo.HasAnnotations); 
   Console.WriteLine("   Has user token:" + cacheInfo.HasUserToken); 
   Console.WriteLine("   Is virtual:" + cacheInfo.IsVirtual); 
   Console.WriteLine("   Mime Type:" + cacheInfo.MimeType); 
   Console.WriteLine("   Mime Type status:" + cacheInfo.MimeTypeStatus); 
   Console.WriteLine("   Page count:" + cacheInfo.PageCount); 
   Debug.Assert(cacheInfo.DocumentId == documentId); 
   Debug.Assert(cacheInfo.Name == "Leadtools.pdf"); 
   Debug.Assert(cacheInfo.IsLoaded); 
   Debug.Assert(cacheInfo.AnnotationsDataLength == 0); 
   Debug.Assert(cacheInfo.DocumentDataLength == 90301); 
   Debug.Assert(!cacheInfo.HasAnnotations); 
   Debug.Assert(!cacheInfo.HasUserToken); 
   Debug.Assert(!cacheInfo.IsVirtual); 
   Debug.Assert(cacheInfo.MimeType == "application/pdf"); 
   Debug.Assert(cacheInfo.MimeTypeStatus == DocumentMimeTypeStatus.Unspecified); 
   Debug.Assert(cacheInfo.PageCount == 5); 
} 
 
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 getDocumentCacheInfoExample() throws IOException { 
   final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
   String documentFile = combine(LEAD_VARS_IMAGES_DIR, "Leadtools.pdf"); 
 
   // Setup a cache 
   FileCache cache = new FileCache(); 
   cache.setCacheDirectory("c:\\cache-dir"); 
 
   // We will use this document ID 
   final String documentId = "test-document"; 
 
   // Ensure that the document does not exist in the cache 
   LoadFromCacheOptions deleteFromCacheOptions = new LoadFromCacheOptions(); 
   deleteFromCacheOptions.setCache(cache); 
   deleteFromCacheOptions.setDocumentId(documentId); 
   DocumentFactory.deleteFromCache(deleteFromCacheOptions); 
 
   DocumentCacheInfo cacheInfo; 
 
   // Now get the info for this document, it should not exist 
   cacheInfo = DocumentFactory.getDocumentCacheInfo(cache, documentId); 
   assertTrue(cacheInfo == null); 
 
   // Next, upload a document into this cache 
   UploadDocumentOptions uploadDocumentOptions = new UploadDocumentOptions(); 
   uploadDocumentOptions.setCache(cache); 
   uploadDocumentOptions.setDocumentId(documentId); 
   uploadDocumentOptions.setName("Leadtools.pdf"); 
   URI uploadUri = DocumentFactory.beginUpload(uploadDocumentOptions); 
   byte[] buffer = Files.readAllBytes(new File(documentFile).toPath()); 
   DocumentFactory.uploadDocument(cache, uploadUri, buffer, 0, buffer.length); 
   DocumentFactory.endUpload(cache, uploadUri); 
 
   // Now check the info again, it should be there but not loaded 
   cacheInfo = DocumentFactory.getDocumentCacheInfo(cache, documentId); 
   // DocumentCacheInfo reference 
   System.out.println("After upload"); 
   System.out.println("   DocumentId:" + cacheInfo.getDocumentId()); 
   System.out.println("   Name:" + cacheInfo.getName()); 
   System.out.println("   IsLoaded:" + cacheInfo.isLoaded()); 
   System.out.println("   Annotations data length:" + cacheInfo.getAnnotationsDataLength()); 
   System.out.println("   Document data length:" + cacheInfo.getDocumentDataLength()); 
   System.out.println("   Has annotations:" + cacheInfo.hasAnnotations()); 
   System.out.println("   Has user token:" + cacheInfo.hasUserToken()); 
   System.out.println("   Is virtual:" + cacheInfo.isVirtual()); 
   System.out.println("   Mime Type:" + cacheInfo.getMimeType()); 
   System.out.println("   Mime Type status:" + cacheInfo.getMimeTypeStatus()); 
   System.out.println("   Page count:" + cacheInfo.getPageCount()); 
   assertTrue(cacheInfo.getDocumentId().equals(documentId)); 
   System.out.println(cacheInfo.getName()); 
   assertTrue(cacheInfo.getName().equals("Leadtools.pdf")); 
   assertTrue(!cacheInfo.isLoaded()); 
   assertTrue(cacheInfo.getAnnotationsDataLength() == 0); 
   System.out.println(cacheInfo.getDocumentDataLength()); 
   assertTrue(cacheInfo.getDocumentDataLength() == 90301); 
   assertTrue(!cacheInfo.hasAnnotations()); 
   assertTrue(!cacheInfo.hasUserToken()); 
   assertTrue(!cacheInfo.isVirtual()); 
   assertTrue(cacheInfo.getMimeType() == null); 
   assertTrue(cacheInfo.getMimeTypeStatus() == DocumentMimeTypeStatus.UNSPECIFIED); 
   assertTrue(cacheInfo.getPageCount() == 0); 
 
   // Next load this document 
   LoadDocumentOptions loadDocumentOptions = new LoadDocumentOptions(); 
   loadDocumentOptions.setCache(cache); 
   LEADDocument document = DocumentFactory.loadFromUri(uploadUri, loadDocumentOptions); 
   // Save it to the cache 
   document.setAutoSaveToCache(false); 
   document.setAutoDeleteFromCache(false); 
   document.saveToCache(); 
 
   // Now get its info again, it should be there and loaded 
   cacheInfo = DocumentFactory.getDocumentCacheInfo(cache, documentId); 
   System.out.println("After load"); 
   System.out.println("   DocumentId:" + cacheInfo.getDocumentId()); 
   System.out.println("   Name:" + cacheInfo.getName()); 
   System.out.println("   IsLoaded:" + cacheInfo.isLoaded()); 
   System.out.println("   Annotations data length:" + cacheInfo.getAnnotationsDataLength()); 
   System.out.println("   Document data length:" + cacheInfo.getDocumentDataLength()); 
   System.out.println("   Has annotations:" + cacheInfo.hasAnnotations()); 
   System.out.println("   Has user token:" + cacheInfo.hasUserToken()); 
   System.out.println("   Is virtual:" + cacheInfo.isVirtual()); 
   System.out.println("   Mime Type:" + cacheInfo.getMimeType()); 
   System.out.println("   Mime Type status:" + cacheInfo.getMimeTypeStatus()); 
   System.out.println("   Page count:" + cacheInfo.getPageCount()); 
   assertTrue(cacheInfo.getDocumentId().equals(documentId)); 
   assertTrue(cacheInfo.getName().equals("Leadtools.pdf")); 
   assertTrue(cacheInfo.isLoaded()); 
   assertTrue(cacheInfo.getAnnotationsDataLength() == 0); 
   assertTrue(cacheInfo.getDocumentDataLength() == 90301); 
   assertTrue(!cacheInfo.hasAnnotations()); 
   assertTrue(!cacheInfo.hasUserToken()); 
   assertTrue(!cacheInfo.isVirtual()); 
   assertTrue(cacheInfo.getMimeType().equals("application/pdf")); 
   assertTrue(cacheInfo.getMimeTypeStatus() == DocumentMimeTypeStatus.UNSPECIFIED); 
   assertTrue(cacheInfo.getPageCount() == 5); 
} 
Requirements

Target Platforms

Help Version 23.0.2024.2.29
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© 1991-2024 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.Document Assembly

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