Helper method to quickly determine if a document exists in the cache.
public static bool IsDocumentInCache(
ObjectCache cache,
string documentId
)
public:
static bool IsDocumentInCache(
ObjectCache^ cache,
String^ documentId
)
def IsDocumentInCache(self,cache,documentId):
cache
Cache to check. This value cannot be null.
documentId
The ID of the document to check. This value cannot be null and can be either a document ID or the URL to an uploaded LEAD document (leaddocument://).
true if the document exists in the cache; otherwise, false.
This method uses the information described in Document Toolkit and Caching to quickly determine if the document exists in the cache.
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 IsDocumentInCacheExample()
{
// Create a cache
FileCache cache = new FileCache();
cache.CacheDirectory = @"c:\cache-dir";
// We will use a custom document ID
string documentId = "my-document";
// Ensure the document is not in the cache
Debug.Assert(!DocumentFactory.IsDocumentInCache(cache, documentId));
// Upload the into the document
Uri documentUri = DocumentFactory.BeginUpload(new UploadDocumentOptions
{
Cache = cache,
DocumentId = documentId,
});
byte[] data = System.IO.File.ReadAllBytes(@"C:\LEADTOOLS22\Resources\Images\leadtools.pdf");
DocumentFactory.UploadDocument(cache, documentUri, data, 0, data.Length);
DocumentFactory.EndUpload(cache, documentUri);
// Now ensure the document is in the cache, using the ID and the URI
Debug.Assert(DocumentFactory.IsDocumentInCache(cache, documentId));
Debug.Assert(DocumentFactory.IsDocumentInCache(cache, documentUri.ToString()));
// Load the document from the cache
using (LEADDocument document = DocumentFactory.LoadFromUri(documentUri,
new LoadDocumentOptions
{
Cache = cache,
}))
{
Debug.Assert(document != null);
document.AutoDeleteFromCache = false;
document.AutoSaveToCache = false;
document.SaveToCache();
}
// Ensure the document is still in the cache, using the ID and the URI
Debug.Assert(DocumentFactory.IsDocumentInCache(cache, documentId));
Debug.Assert(DocumentFactory.IsDocumentInCache(cache, documentUri.ToString()));
// Delete the document from the cache
bool isDeleted = DocumentFactory.DeleteFromCache(new LoadFromCacheOptions
{
Cache = cache,
DocumentId = documentId
});
Debug.Assert(isDeleted);
// Ensure the document is not in the cache
Debug.Assert(!DocumentFactory.IsDocumentInCache(cache, documentId));
Debug.Assert(!DocumentFactory.IsDocumentInCache(cache, documentUri.ToString()));
}
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 isDocumentInCacheExample() throws IOException {
// Create a cache
FileCache cache = new FileCache();
cache.setCacheDirectory("c:\\cache-dir");
// We will use a custom document ID
String documentId = "my-document";
// Ensure the document is not in the cache
assertTrue(!DocumentFactory.isDocumentInCache(cache, documentId));
// Upload the into the document
UploadDocumentOptions uploadOptions = new UploadDocumentOptions();
uploadOptions.setCache(cache);
uploadOptions.setDocumentId(documentId);
URI documentUri = DocumentFactory.beginUpload(uploadOptions);
byte[] data = Files.readAllBytes(Paths.get("C:\\LEADTOOLS23\\Resources\\Images\\leadtools.pdf"));
DocumentFactory.uploadDocument(cache, documentUri, data, 0, data.length);
DocumentFactory.endUpload(cache, documentUri);
// Now ensure the document is in the cache, using the ID and the URI
assertTrue(DocumentFactory.isDocumentInCache(cache, documentId));
assertTrue(DocumentFactory.isDocumentInCache(cache, documentUri.toString()));
// Load the document from the cache
LoadDocumentOptions loadOptions = new LoadDocumentOptions();
loadOptions.setCache(cache);
LEADDocument document = DocumentFactory.loadFromUri(documentUri, loadOptions);
assertTrue(document != null);
document.setAutoDeleteFromCache(false);
document.setAutoSaveToCache(false);
document.saveToCache();
// Ensure the document is still in the cache, using the ID and the URI
assertTrue(DocumentFactory.isDocumentInCache(cache, documentId));
assertTrue(DocumentFactory.isDocumentInCache(cache, documentUri.toString()));
// Delete the document from the cache
LoadFromCacheOptions loadCacheOptions = new LoadFromCacheOptions();
loadCacheOptions.setCache(cache);
loadCacheOptions.setDocumentId(documentId);
boolean isDeleted = DocumentFactory.deleteFromCache(loadCacheOptions);
assertTrue(isDeleted);
// Ensure the document is not in the cache
assertTrue(!DocumentFactory.isDocumentInCache(cache, documentId));
assertTrue(!DocumentFactory.isDocumentInCache(cache, documentUri.toString()));
}
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