CloneDocumentOptions Class (original) (raw)
Summary
Options to use when cloning an existing document.
Syntax
[SerializableAttribute()]
[DataContractAttribute()]
public class CloneDocumentOptions
public:
[SerializableAttribute,
DataContractAttribute]
ref class CloneDocumentOptions
class CloneDocumentOptions: Example
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 CloneDocumentExample()
{
var documentUri = new Uri("https://demo.leadtools.com/images/pdf/leadtools.pdf");
// Setup a cache
FileCache cache = new FileCache();
cache.CacheDirectory = @"c:\cache-dir";
string documentId1;
string documentId2;
// Load a document into the cache
var loadDocumentOptions = new LoadDocumentOptions();
loadDocumentOptions.Cache = cache;
using (var document1 = DocumentFactory.LoadFromUri(documentUri, loadDocumentOptions))
{
// Get its document ID and save it
documentId1 = document1.DocumentId;
document1.AutoDeleteFromCache = false;
document1.AutoSaveToCache = false;
document1.SaveToCache();
// Clone it into the same cache
var cloneDocumentOptions = new CloneDocumentOptions();
Console.WriteLine("Cache Policy: {0}", cloneDocumentOptions.CachePolicy.AbsoluteExpiration);
using (var document2 = document1.Clone(cache, cloneDocumentOptions))
{
// Get its document ID and save it
documentId2 = document2.DocumentId;
document2.AutoDeleteFromCache = false;
document2.AutoSaveToCache = false;
document2.SaveToCache();
}
using (var document3 = DocumentFactory.CloneDocument(cache, documentId1, cloneDocumentOptions))
{
// Get its document ID and save it
documentId1 = document3.DocumentId;
document3.AutoDeleteFromCache = false;
document3.AutoSaveToCache = false;
document3.SaveToCache();
}
}
// Ensure both documents are in the cache
DocumentCacheInfo cacheInfo;
cacheInfo = DocumentFactory.GetDocumentCacheInfo(cache, documentId1);
Debug.Assert(cacheInfo != null);
cacheInfo = DocumentFactory.GetDocumentCacheInfo(cache, documentId2);
Debug.Assert(cacheInfo != null);
// Now delete the first document
var deleteFromCacheOptions = new LoadFromCacheOptions();
deleteFromCacheOptions.Cache = cache;
deleteFromCacheOptions.DocumentId = documentId1;
DocumentFactory.DeleteFromCache(deleteFromCacheOptions);
cacheInfo = DocumentFactory.GetDocumentCacheInfo(cache, documentId1);
Debug.Assert(cacheInfo == null);
// Or by loading it from the cache, it should be null
var loadFromCacheOptions = new LoadFromCacheOptions();
loadFromCacheOptions.Cache = cache;
loadFromCacheOptions.DocumentId = documentId1;
using (var document1 = DocumentFactory.LoadFromCache(loadFromCacheOptions))
{
Debug.Assert(document1 == null);
}
// And ensure that the cloned document is still usable by loading it
loadFromCacheOptions = new LoadFromCacheOptions();
loadFromCacheOptions.Cache = cache;
loadFromCacheOptions.DocumentId = documentId2;
using (var document2 = DocumentFactory.LoadFromCache(loadFromCacheOptions))
{
Debug.Assert(document2 != null);
}
// We are done, delete it
deleteFromCacheOptions = new LoadFromCacheOptions();
deleteFromCacheOptions.Cache = cache;
deleteFromCacheOptions.DocumentId = documentId2;
DocumentFactory.DeleteFromCache(deleteFromCacheOptions);
}