Package com.google.cloud.documentai.v1beta2

Class DocumentUnderstandingServiceClient

  • All Implemented Interfaces:
    com.google.api.gax.core.BackgroundResource, AutoCloseable
    @BetaApi
@Generated("by gapic-generator-java")
public class DocumentUnderstandingServiceClient
extends Object
implements com.google.api.gax.core.BackgroundResource
    Service Description: Service to parse structured information from unstructured or semi-structured documents using state-of-the-art Google AI such as natural language, computer vision, and translation.

    This class provides the ability to make remote calls to the backing service through method calls that map to API methods. Sample code to get started: 

    
 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (DocumentUnderstandingServiceClient documentUnderstandingServiceClient =
     DocumentUnderstandingServiceClient.create()) {
   ProcessDocumentRequest request =
       ProcessDocumentRequest.newBuilder()
           .setParent("parent-995424086")
           .setInputConfig(InputConfig.newBuilder().build())
           .setOutputConfig(OutputConfig.newBuilder().build())
           .setDocumentType("documentType-1473196299")
           .setTableExtractionParams(TableExtractionParams.newBuilder().build())
           .setFormExtractionParams(FormExtractionParams.newBuilder().build())
           .setEntityExtractionParams(EntityExtractionParams.newBuilder().build())
           .setOcrParams(OcrParams.newBuilder().build())
           .setAutomlParams(AutoMlParams.newBuilder().build())
           .build();
   Document response = documentUnderstandingServiceClient.processDocument(request);
 }

    Note: close() needs to be called on the DocumentUnderstandingServiceClient object to clean up resources such as threads. In the example above, try-with-resources is used, which automatically calls close().

    The surface of this class includes several types of Java methods for each of the API's methods:

    1. A "flattened" method. With this type of method, the fields of the request type have been converted into function parameters. It may be the case that not all fields are available as parameters, and not every API method will have a flattened method entry point.
    2. A "request object" method. This type of method only takes one parameter, a request object, which must be constructed before the call. Not every API method will have a request object method.
    3. A "callable" method. This type of method takes no parameters and returns an immutable API callable object, which can be used to initiate calls to the service.

    See the individual methods for example code.

    Many parameters require resource names to be formatted in a particular way. To assist with these names, this class includes a format method for each type of name, and additionally a parse method to extract the individual identifiers contained within names that are returned.

    This class can be customized by passing in a custom instance of DocumentUnderstandingServiceSettings to create(). For example:

    To customize credentials: 

    
 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 DocumentUnderstandingServiceSettings documentUnderstandingServiceSettings =
     DocumentUnderstandingServiceSettings.newBuilder()
         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
         .build();
 DocumentUnderstandingServiceClient documentUnderstandingServiceClient =
     DocumentUnderstandingServiceClient.create(documentUnderstandingServiceSettings);

    To customize the endpoint: 

    
 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 DocumentUnderstandingServiceSettings documentUnderstandingServiceSettings =
     DocumentUnderstandingServiceSettings.newBuilder().setEndpoint(myEndpoint).build();
 DocumentUnderstandingServiceClient documentUnderstandingServiceClient =
     DocumentUnderstandingServiceClient.create(documentUnderstandingServiceSettings);

    Please refer to the GitHub repository's samples for more quickstart code snippets.

    • Constructor Detail

      • DocumentUnderstandingServiceClient

        protected DocumentUnderstandingServiceClient​(DocumentUnderstandingServiceSettings settings)
                                      throws IOException
        Constructs an instance of DocumentUnderstandingServiceClient, using the given settings. This is protected so that it is easy to make a subclass, but otherwise, the static factory methods should be preferred.
        Throws:
        IOException

    • Method Detail

      • getOperationsClient

        public final com.google.longrunning.OperationsClient getOperationsClient()
        Returns the OperationsClient that can be used to query the status of a long-running operation returned by another API method call.

      • batchProcessDocumentsAsync

        public final com.google.api.gax.longrunning.OperationFuture<BatchProcessDocumentsResponse,​OperationMetadata> batchProcessDocumentsAsync​(List<ProcessDocumentRequest> requests)
        LRO endpoint to batch process many documents. The output is written to Cloud Storage as JSON in the [Document] format.

        Sample code: 

        
 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (DocumentUnderstandingServiceClient documentUnderstandingServiceClient =
     DocumentUnderstandingServiceClient.create()) {
   List<ProcessDocumentRequest> requests = new ArrayList<>();
   BatchProcessDocumentsResponse response =
       documentUnderstandingServiceClient.batchProcessDocumentsAsync(requests).get();
 }
        Parameters:
        requests - Required. Individual requests for each document.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • batchProcessDocumentsAsync

        public final com.google.api.gax.longrunning.OperationFuture<BatchProcessDocumentsResponse,​OperationMetadata> batchProcessDocumentsAsync​(BatchProcessDocumentsRequest request)
        LRO endpoint to batch process many documents. The output is written to Cloud Storage as JSON in the [Document] format.

        Sample code: 

        
 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (DocumentUnderstandingServiceClient documentUnderstandingServiceClient =
     DocumentUnderstandingServiceClient.create()) {
   BatchProcessDocumentsRequest request =
       BatchProcessDocumentsRequest.newBuilder()
           .addAllRequests(new ArrayList<ProcessDocumentRequest>())
           .setParent("parent-995424086")
           .build();
   BatchProcessDocumentsResponse response =
       documentUnderstandingServiceClient.batchProcessDocumentsAsync(request).get();
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • batchProcessDocumentsOperationCallable

        public final com.google.api.gax.rpc.OperationCallable<BatchProcessDocumentsRequest,​BatchProcessDocumentsResponse,​OperationMetadata> batchProcessDocumentsOperationCallable()
        LRO endpoint to batch process many documents. The output is written to Cloud Storage as JSON in the [Document] format.

        Sample code: 

        
 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (DocumentUnderstandingServiceClient documentUnderstandingServiceClient =
     DocumentUnderstandingServiceClient.create()) {
   BatchProcessDocumentsRequest request =
       BatchProcessDocumentsRequest.newBuilder()
           .addAllRequests(new ArrayList<ProcessDocumentRequest>())
           .setParent("parent-995424086")
           .build();
   OperationFuture<BatchProcessDocumentsResponse, OperationMetadata> future =
       documentUnderstandingServiceClient
           .batchProcessDocumentsOperationCallable()
           .futureCall(request);
   // Do something.
   BatchProcessDocumentsResponse response = future.get();
 }

      • batchProcessDocumentsCallable

        public final com.google.api.gax.rpc.UnaryCallable<BatchProcessDocumentsRequest,​com.google.longrunning.Operation> batchProcessDocumentsCallable()
        LRO endpoint to batch process many documents. The output is written to Cloud Storage as JSON in the [Document] format.

        Sample code: 

        
 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (DocumentUnderstandingServiceClient documentUnderstandingServiceClient =
     DocumentUnderstandingServiceClient.create()) {
   BatchProcessDocumentsRequest request =
       BatchProcessDocumentsRequest.newBuilder()
           .addAllRequests(new ArrayList<ProcessDocumentRequest>())
           .setParent("parent-995424086")
           .build();
   ApiFuture<Operation> future =
       documentUnderstandingServiceClient.batchProcessDocumentsCallable().futureCall(request);
   // Do something.
   Operation response = future.get();
 }

      • processDocument

        public final Document processDocument​(ProcessDocumentRequest request)
        Processes a single document.

        Sample code: 

        
 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (DocumentUnderstandingServiceClient documentUnderstandingServiceClient =
     DocumentUnderstandingServiceClient.create()) {
   ProcessDocumentRequest request =
       ProcessDocumentRequest.newBuilder()
           .setParent("parent-995424086")
           .setInputConfig(InputConfig.newBuilder().build())
           .setOutputConfig(OutputConfig.newBuilder().build())
           .setDocumentType("documentType-1473196299")
           .setTableExtractionParams(TableExtractionParams.newBuilder().build())
           .setFormExtractionParams(FormExtractionParams.newBuilder().build())
           .setEntityExtractionParams(EntityExtractionParams.newBuilder().build())
           .setOcrParams(OcrParams.newBuilder().build())
           .setAutomlParams(AutoMlParams.newBuilder().build())
           .build();
   Document response = documentUnderstandingServiceClient.processDocument(request);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • processDocumentCallable

        public final com.google.api.gax.rpc.UnaryCallable<ProcessDocumentRequest,​Document> processDocumentCallable()
        Processes a single document.

        Sample code: 

        
 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (DocumentUnderstandingServiceClient documentUnderstandingServiceClient =
     DocumentUnderstandingServiceClient.create()) {
   ProcessDocumentRequest request =
       ProcessDocumentRequest.newBuilder()
           .setParent("parent-995424086")
           .setInputConfig(InputConfig.newBuilder().build())
           .setOutputConfig(OutputConfig.newBuilder().build())
           .setDocumentType("documentType-1473196299")
           .setTableExtractionParams(TableExtractionParams.newBuilder().build())
           .setFormExtractionParams(FormExtractionParams.newBuilder().build())
           .setEntityExtractionParams(EntityExtractionParams.newBuilder().build())
           .setOcrParams(OcrParams.newBuilder().build())
           .setAutomlParams(AutoMlParams.newBuilder().build())
           .build();
   ApiFuture<Document> future =
       documentUnderstandingServiceClient.processDocumentCallable().futureCall(request);
   // Do something.
   Document response = future.get();
 }

      • listLocations

        public final DocumentUnderstandingServiceClient.ListLocationsPagedResponse listLocations​(com.google.cloud.location.ListLocationsRequest request)
        Lists information about the supported locations for this service.

        Sample code: 

        
 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (DocumentUnderstandingServiceClient documentUnderstandingServiceClient =
     DocumentUnderstandingServiceClient.create()) {
   ListLocationsRequest request =
       ListLocationsRequest.newBuilder()
           .setName("name3373707")
           .setFilter("filter-1274492040")
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   for (Location element :
       documentUnderstandingServiceClient.listLocations(request).iterateAll()) {
     // doThingsWith(element);
   }
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • listLocationsPagedCallable

        public final com.google.api.gax.rpc.UnaryCallable<com.google.cloud.location.ListLocationsRequest,​DocumentUnderstandingServiceClient.ListLocationsPagedResponse> listLocationsPagedCallable()
        Lists information about the supported locations for this service.

        Sample code: 

        
 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (DocumentUnderstandingServiceClient documentUnderstandingServiceClient =
     DocumentUnderstandingServiceClient.create()) {
   ListLocationsRequest request =
       ListLocationsRequest.newBuilder()
           .setName("name3373707")
           .setFilter("filter-1274492040")
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   ApiFuture<Location> future =
       documentUnderstandingServiceClient.listLocationsPagedCallable().futureCall(request);
   // Do something.
   for (Location element : future.get().iterateAll()) {
     // doThingsWith(element);
   }
 }

      • listLocationsCallable

        public final com.google.api.gax.rpc.UnaryCallable<com.google.cloud.location.ListLocationsRequest,​com.google.cloud.location.ListLocationsResponse> listLocationsCallable()
        Lists information about the supported locations for this service.

        Sample code: 

        
 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (DocumentUnderstandingServiceClient documentUnderstandingServiceClient =
     DocumentUnderstandingServiceClient.create()) {
   ListLocationsRequest request =
       ListLocationsRequest.newBuilder()
           .setName("name3373707")
           .setFilter("filter-1274492040")
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   while (true) {
     ListLocationsResponse response =
         documentUnderstandingServiceClient.listLocationsCallable().call(request);
     for (Location element : response.getLocationsList()) {
       // doThingsWith(element);
     }
     String nextPageToken = response.getNextPageToken();
     if (!Strings.isNullOrEmpty(nextPageToken)) {
       request = request.toBuilder().setPageToken(nextPageToken).build();
     } else {
       break;
     }
   }
 }

      • getLocation

        public final com.google.cloud.location.Location getLocation​(com.google.cloud.location.GetLocationRequest request)
        Gets information about a location.

        Sample code: 

        
 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (DocumentUnderstandingServiceClient documentUnderstandingServiceClient =
     DocumentUnderstandingServiceClient.create()) {
   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
   Location response = documentUnderstandingServiceClient.getLocation(request);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • getLocationCallable

        public final com.google.api.gax.rpc.UnaryCallable<com.google.cloud.location.GetLocationRequest,​com.google.cloud.location.Location> getLocationCallable()
        Gets information about a location.

        Sample code: 

        
 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (DocumentUnderstandingServiceClient documentUnderstandingServiceClient =
     DocumentUnderstandingServiceClient.create()) {
   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
   ApiFuture<Location> future =
       documentUnderstandingServiceClient.getLocationCallable().futureCall(request);
   // Do something.
   Location response = future.get();
 }

      • shutdown

        public void shutdown()
        Specified by:
        shutdown in interface com.google.api.gax.core.BackgroundResource

      • isShutdown

        public boolean isShutdown()
        Specified by:
        isShutdown in interface com.google.api.gax.core.BackgroundResource

      • isTerminated

        public boolean isTerminated()
        Specified by:
        isTerminated in interface com.google.api.gax.core.BackgroundResource

      • shutdownNow

        public void shutdownNow()
        Specified by:
        shutdownNow in interface com.google.api.gax.core.BackgroundResource