ExistsMetadataXml Method

Summary

Returns true if an XML metadata representation exists in the database for sopInstanceUid; otherwise false.

Syntax

C++/CLI

public bool ExistsMetadataXml( 
   string sopInstanceUid 
)

public:  
   bool ExistsMetadataXml( 
      String^ sopInstanceUid 
   )

Parameters

sopInstanceUid

the SOP Instance UID (0008,0018) of the DicomDataSet

Return Value

true if an XML metadata representation exists in the database for sopInstanceUid; otherwise false.

Remarks

Use this method to determine if XML formatted metadata corresponding to sopInstanceUid is already present in the MetadataXml database table. If the metadata does not exist, it can be easily generated by calling StoreMetadataXml.

Example

using Leadtools; 
using Leadtools.Dicom; 
using Leadtools.Dicom.Common.Extensions; 
using Leadtools.DicomDemos; 
using Leadtools.Medical.DataAccessLayer; 
using Leadtools.Medical.Storage.DataAccessLayer; 
using Leadtools.Medical.Storage.DataAccessLayer.Configuration; 
 
public static IStorageDataAccessAgent4 GetStorageDataAccessAgent4() 
{ 
   // Before running this sample, follow these steps: 
   // 1. Run CSPacsDatabaseConfigurationDemo.exe to create the databases 
   // 2. Run CSPACSConfigDemo.exe to create the DICOM services 
   // 3. Set 'serviceDirectory' to the DICOM service folder 
   string serviceDirectory = @"C:\LEADTOOLS22\Bin\Dotnet4\x64\L22_PACS_SCP64"; 
   string productName = "StorageServer"; 
   string serviceName = "L22_PACS_SCP64"; 
   System.Configuration.Configuration configuration = DicomDemoSettingsManager.GetGlobalPacsAddinsConfiguration(serviceDirectory); 
 
   StorageDataAccessConfigurationView view = new StorageDataAccessConfigurationView(configuration, productName, serviceName); 
   IStorageDataAccessAgent4 agent = DataAccessFactory.GetInstance(view).CreateDataAccessAgent<IStorageDataAccessAgent4>(); 
   return agent; 
} 
 
// Stores a DICOM file to the database 
// Stores XML and JSON metadata 
// returns the SOPInstanceUID 
public static string StoreDicomAndMetadataToDatabase(string dicomFileName, IStorageDataAccessAgent4 agent) 
{ 
   DicomDataSet ds = new DicomDataSet(); 
   ds.Load(dicomFileName, DicomDataSetLoadFlags.None); 
   DicomElement element = ds.FindFirstElement(null, DicomTag.SOPInstanceUID, true); 
   string sopInstanceUid = ds.GetStringValue(element, 0); 
   agent.StoreDicom(ds, dicomFileName, "DemoAE", null, true, true, true, true); 
 
   // You can store XML and JSON data with separate calls 
   agent.StoreMetadataXml(ds, sopInstanceUid, DicomDataSetSaveXmlFlags.IgnoreBinaryData, true); 
   agent.StoreMetadataJson(ds, sopInstanceUid, DicomDataSetSaveJsonFlags.IgnoreBinaryData, true); 
 
   // Or you can generate both XML and JSON data with a single method 
   MetadataOptions options = new MetadataOptions(); 
   options.SaveJsonFlags = DicomDataSetSaveJsonFlags.IgnoreBinaryData; 
   options.SaveXmlFlags = DicomDataSetSaveXmlFlags.IgnoreBinaryData; 
   options.StoreJson = true; 
   options.StoreXml = true; 
   agent.StoreMetadata(ds, sopInstanceUid, options, true); 
 
   return sopInstanceUid; 
} 
 
public static void DicomMetadataSample() 
{ 
   IStorageDataAccessAgent4 agent = GetStorageDataAccessAgent4(); 
 
   // Delete all existing metadata 
   agent.DeleteAllMetadataXml(); 
   agent.DeleteAllMetadataJson(); 
 
   // Add two DICOM files, and generate the XML and JSON metadata for each 
   string sopInstanceUid2 = StoreDicomAndMetadataToDatabase(@"C:\LEADTOOLS22\Resources\Images\DICOM\image2.dcm", agent); 
   string sopInstanceUid3 = StoreDicomAndMetadataToDatabase(@"C:\LEADTOOLS22\Resources\Images\DICOM\image3.dcm", agent); 
 
   // Verify the metadata exists for sopInstanceUid2 
   bool exists = agent.ExistsMetadataXml(sopInstanceUid2); 
   Debug.Assert(exists); 
   exists = agent.ExistsMetadataJson(sopInstanceUid2); 
   Debug.Assert(exists); 
 
 
   // Get the total possible XML metadata count -- this is the count of all DICOM instances 
   int xmlMetadataCount = agent.GetCountMetadataXml(MetadataScope.All); 
   Debug.WriteLine("XML MetadataCount: {0}", xmlMetadataCount); 
 
   // Get the existing count of XML metadata records 
   int xmlMetadataExistingCount = agent.GetCountMetadataXml(MetadataScope.Existing); 
   Debug.WriteLine("XML Existing MetadataCount: {0}", xmlMetadataExistingCount); 
 
   // Get the missing count of XML metadata records 
   int xmlMetadataMissingCount = agent.GetCountMetadataXml(MetadataScope.Missing); 
   Debug.WriteLine("XML Missing MetadataCount: {0}", xmlMetadataMissingCount); 
 
   // Get the missing count of JSON metadata records 
   int jsonMetadataMissingCount = agent.GetCountMetadataJson(MetadataScope.Missing); 
   Debug.WriteLine("JSON Missing MetadataCount: {0}", jsonMetadataMissingCount); 
 
   // Delete the metadata for sopInstanceUid2 and sopInstanceUid3 
   List<string> sopList = new List<string>(); 
   sopList.Add(sopInstanceUid2); 
   sopList.Add(sopInstanceUid3); 
 
   agent.DeleteMetadataXml(sopList); 
   agent.DeleteMetadataJson(sopList); 
 
   // Verify the metadata exists no longer exists for sopInstanceUid2 
   exists = agent.ExistsMetadataXml(sopInstanceUid2); 
   Debug.Assert(!exists); 
   exists = agent.ExistsMetadataJson(sopInstanceUid2); 
   Debug.Assert(!exists); 
 
   // Generate metadata for all records in the database 
   agent.GenerateMetadataStarting += Agent_GenerateMetadataStarting; 
   agent.GenerateMetadataUpdate += Agent_GenerateMetadataUpdate; 
   agent.GenerateMetadataCompleted += Agent_GenerateMetadataCompleted; 
   agent.GenerateMetadataXml(DicomDataSetSaveXmlFlags.IgnoreBinaryData, MetadataScope.All); 
   agent.GenerateMetadataJson(DicomDataSetSaveJsonFlags.IgnoreBinaryData, MetadataScope.All); 
 
   // Or you can call a single method to generate all metadata 
   MetadataOptions options = new MetadataOptions(); 
   options.SaveJsonFlags = DicomDataSetSaveJsonFlags.IgnoreBinaryData; 
   options.SaveXmlFlags = DicomDataSetSaveXmlFlags.IgnoreBinaryData; 
   options.StoreJson = true; 
   options.StoreXml = true; 
   agent.GenerateMetadata(options, MetadataScope.All); 
} 
 
private static void Agent_GenerateMetadataCompleted(object sender, GenerateMetadataArgs e) 
{ 
   Debug.WriteLine("GenerateMetadataCompleted {0} of {1}: ", e.CurrentItem + 1, e.TotalCount); 
} 
 
private static void Agent_GenerateMetadataUpdate(object sender, GenerateMetadataArgs e) 
{ 
   // Cancel generating metadata after 5 metadata records have been generated 
   if (e.CurrentItem + 1 == 5) 
   { 
      e.Cancelled = true; 
      Debug.WriteLine("GenerateMetadataUpdate - Cancelled {0} of {1}: ", e.CurrentItem + 1, e.TotalCount); 
   } 
} 
 
private static void Agent_GenerateMetadataStarting(object sender, GenerateMetadataArgs e) 
{ 
   Debug.WriteLine("GenerateMetadataStarting {0} of {1}: ", e.CurrentItem + 1, e.TotalCount); 
}