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GitHub Repository | Product Reference | REST Documentation | RPC Documentation |
Service Description: MatchService is a Google managed service for efficient vector similarity search at scale.
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 (MatchServiceClient matchServiceClient = MatchServiceClient.create()) {
FindNeighborsRequest request =
FindNeighborsRequest.newBuilder()
.setIndexEndpoint(
IndexEndpointName.of("[PROJECT]", "[LOCATION]", "[INDEX_ENDPOINT]").toString())
.setDeployedIndexId("deployedIndexId-1101212953")
.addAllQueries(new ArrayList<FindNeighborsRequest.Query>())
.setReturnFullDatapoint(true)
.build();
FindNeighborsResponse response = matchServiceClient.findNeighbors(request);
}
Note: close() needs to be called on the MatchServiceClient 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:
- 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.
- 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.
- 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 MatchServiceSettings 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
MatchServiceSettings matchServiceSettings =
MatchServiceSettings.newBuilder()
.setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
.build();
MatchServiceClient matchServiceClient = MatchServiceClient.create(matchServiceSettings);
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
MatchServiceSettings matchServiceSettings =
MatchServiceSettings.newBuilder().setEndpoint(myEndpoint).build();
MatchServiceClient matchServiceClient = MatchServiceClient.create(matchServiceSettings);
Please refer to the GitHub repository's samples for more quickstart code snippets.
Static Methods
create()
public static final MatchServiceClient create()
Constructs an instance of MatchServiceClient with default settings.
Returns | |
---|---|
Type | Description |
MatchServiceClient |
Exceptions | |
---|---|
Type | Description |
IOException |
create(MatchServiceSettings settings)
public static final MatchServiceClient create(MatchServiceSettings settings)
Constructs an instance of MatchServiceClient, using the given settings. The channels are created based on the settings passed in, or defaults for any settings that are not set.
Parameter | |
---|---|
Name | Description |
settings | MatchServiceSettings |
Returns | |
---|---|
Type | Description |
MatchServiceClient |
Exceptions | |
---|---|
Type | Description |
IOException |
create(MatchServiceStub stub)
public static final MatchServiceClient create(MatchServiceStub stub)
Constructs an instance of MatchServiceClient, using the given stub for making calls. This is for advanced usage - prefer using create(MatchServiceSettings).
Parameter | |
---|---|
Name | Description |
stub | MatchServiceStub |
Returns | |
---|---|
Type | Description |
MatchServiceClient |
Constructors
MatchServiceClient(MatchServiceSettings settings)
protected MatchServiceClient(MatchServiceSettings settings)
Constructs an instance of MatchServiceClient, 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.
Parameter | |
---|---|
Name | Description |
settings | MatchServiceSettings |
MatchServiceClient(MatchServiceStub stub)
protected MatchServiceClient(MatchServiceStub stub)
Parameter | |
---|---|
Name | Description |
stub | MatchServiceStub |
Methods
awaitTermination(long duration, TimeUnit unit)
public boolean awaitTermination(long duration, TimeUnit unit)
Parameters | |
---|---|
Name | Description |
duration | long |
unit | TimeUnit |
Returns | |
---|---|
Type | Description |
boolean |
Exceptions | |
---|---|
Type | Description |
InterruptedException |
close()
public final void close()
findNeighbors(FindNeighborsRequest request)
public final FindNeighborsResponse findNeighbors(FindNeighborsRequest request)
Finds the nearest neighbors of each vector within the request.
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 (MatchServiceClient matchServiceClient = MatchServiceClient.create()) {
FindNeighborsRequest request =
FindNeighborsRequest.newBuilder()
.setIndexEndpoint(
IndexEndpointName.of("[PROJECT]", "[LOCATION]", "[INDEX_ENDPOINT]").toString())
.setDeployedIndexId("deployedIndexId-1101212953")
.addAllQueries(new ArrayList<FindNeighborsRequest.Query>())
.setReturnFullDatapoint(true)
.build();
FindNeighborsResponse response = matchServiceClient.findNeighbors(request);
}
Parameter | |
---|---|
Name | Description |
request | FindNeighborsRequest The request object containing all of the parameters for the API call. |
Returns | |
---|---|
Type | Description |
FindNeighborsResponse |
findNeighborsCallable()
public final UnaryCallable<FindNeighborsRequest,FindNeighborsResponse> findNeighborsCallable()
Finds the nearest neighbors of each vector within the request.
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 (MatchServiceClient matchServiceClient = MatchServiceClient.create()) {
FindNeighborsRequest request =
FindNeighborsRequest.newBuilder()
.setIndexEndpoint(
IndexEndpointName.of("[PROJECT]", "[LOCATION]", "[INDEX_ENDPOINT]").toString())
.setDeployedIndexId("deployedIndexId-1101212953")
.addAllQueries(new ArrayList<FindNeighborsRequest.Query>())
.setReturnFullDatapoint(true)
.build();
ApiFuture<FindNeighborsResponse> future =
matchServiceClient.findNeighborsCallable().futureCall(request);
// Do something.
FindNeighborsResponse response = future.get();
}
Returns | |
---|---|
Type | Description |
UnaryCallable<FindNeighborsRequest,FindNeighborsResponse> |
getIamPolicy(GetIamPolicyRequest request)
public final Policy getIamPolicy(GetIamPolicyRequest request)
Gets the access control policy for a resource. Returns an empty policyif the resource exists and does not have a policy set.
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 (MatchServiceClient matchServiceClient = MatchServiceClient.create()) {
GetIamPolicyRequest request =
GetIamPolicyRequest.newBuilder()
.setResource(
EndpointName.ofProjectLocationEndpointName(
"[PROJECT]", "[LOCATION]", "[ENDPOINT]")
.toString())
.setOptions(GetPolicyOptions.newBuilder().build())
.build();
Policy response = matchServiceClient.getIamPolicy(request);
}
Parameter | |
---|---|
Name | Description |
request | com.google.iam.v1.GetIamPolicyRequest The request object containing all of the parameters for the API call. |
Returns | |
---|---|
Type | Description |
com.google.iam.v1.Policy |
getIamPolicyCallable()
public final UnaryCallable<GetIamPolicyRequest,Policy> getIamPolicyCallable()
Gets the access control policy for a resource. Returns an empty policyif the resource exists and does not have a policy set.
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 (MatchServiceClient matchServiceClient = MatchServiceClient.create()) {
GetIamPolicyRequest request =
GetIamPolicyRequest.newBuilder()
.setResource(
EndpointName.ofProjectLocationEndpointName(
"[PROJECT]", "[LOCATION]", "[ENDPOINT]")
.toString())
.setOptions(GetPolicyOptions.newBuilder().build())
.build();
ApiFuture<Policy> future = matchServiceClient.getIamPolicyCallable().futureCall(request);
// Do something.
Policy response = future.get();
}
Returns | |
---|---|
Type | Description |
UnaryCallable<com.google.iam.v1.GetIamPolicyRequest,com.google.iam.v1.Policy> |
getLocation(GetLocationRequest request)
public final Location getLocation(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 (MatchServiceClient matchServiceClient = MatchServiceClient.create()) {
GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
Location response = matchServiceClient.getLocation(request);
}
Parameter | |
---|---|
Name | Description |
request | com.google.cloud.location.GetLocationRequest The request object containing all of the parameters for the API call. |
Returns | |
---|---|
Type | Description |
com.google.cloud.location.Location |
getLocationCallable()
public final UnaryCallable<GetLocationRequest,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 (MatchServiceClient matchServiceClient = MatchServiceClient.create()) {
GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
ApiFuture<Location> future = matchServiceClient.getLocationCallable().futureCall(request);
// Do something.
Location response = future.get();
}
Returns | |
---|---|
Type | Description |
UnaryCallable<com.google.cloud.location.GetLocationRequest,com.google.cloud.location.Location> |
getSettings()
public final MatchServiceSettings getSettings()
Returns | |
---|---|
Type | Description |
MatchServiceSettings |
getStub()
public MatchServiceStub getStub()
Returns | |
---|---|
Type | Description |
MatchServiceStub |
isShutdown()
public boolean isShutdown()
Returns | |
---|---|
Type | Description |
boolean |
isTerminated()
public boolean isTerminated()
Returns | |
---|---|
Type | Description |
boolean |
listLocations(ListLocationsRequest request)
public final MatchServiceClient.ListLocationsPagedResponse listLocations(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 (MatchServiceClient matchServiceClient = MatchServiceClient.create()) {
ListLocationsRequest request =
ListLocationsRequest.newBuilder()
.setName("name3373707")
.setFilter("filter-1274492040")
.setPageSize(883849137)
.setPageToken("pageToken873572522")
.build();
for (Location element : matchServiceClient.listLocations(request).iterateAll()) {
// doThingsWith(element);
}
}
Parameter | |
---|---|
Name | Description |
request | com.google.cloud.location.ListLocationsRequest The request object containing all of the parameters for the API call. |
Returns | |
---|---|
Type | Description |
MatchServiceClient.ListLocationsPagedResponse |
listLocationsCallable()
public final UnaryCallable<ListLocationsRequest,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 (MatchServiceClient matchServiceClient = MatchServiceClient.create()) {
ListLocationsRequest request =
ListLocationsRequest.newBuilder()
.setName("name3373707")
.setFilter("filter-1274492040")
.setPageSize(883849137)
.setPageToken("pageToken873572522")
.build();
while (true) {
ListLocationsResponse response = matchServiceClient.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;
}
}
}
Returns | |
---|---|
Type | Description |
UnaryCallable<com.google.cloud.location.ListLocationsRequest,com.google.cloud.location.ListLocationsResponse> |
listLocationsPagedCallable()
public final UnaryCallable<ListLocationsRequest,MatchServiceClient.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 (MatchServiceClient matchServiceClient = MatchServiceClient.create()) {
ListLocationsRequest request =
ListLocationsRequest.newBuilder()
.setName("name3373707")
.setFilter("filter-1274492040")
.setPageSize(883849137)
.setPageToken("pageToken873572522")
.build();
ApiFuture<Location> future =
matchServiceClient.listLocationsPagedCallable().futureCall(request);
// Do something.
for (Location element : future.get().iterateAll()) {
// doThingsWith(element);
}
}
Returns | |
---|---|
Type | Description |
UnaryCallable<com.google.cloud.location.ListLocationsRequest,ListLocationsPagedResponse> |
readIndexDatapoints(ReadIndexDatapointsRequest request)
public final ReadIndexDatapointsResponse readIndexDatapoints(ReadIndexDatapointsRequest request)
Reads the datapoints/vectors of the given IDs. A maximum of 1000 datapoints can be retrieved in a batch.
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 (MatchServiceClient matchServiceClient = MatchServiceClient.create()) {
ReadIndexDatapointsRequest request =
ReadIndexDatapointsRequest.newBuilder()
.setIndexEndpoint(
IndexEndpointName.of("[PROJECT]", "[LOCATION]", "[INDEX_ENDPOINT]").toString())
.setDeployedIndexId("deployedIndexId-1101212953")
.addAllIds(new ArrayList<String>())
.build();
ReadIndexDatapointsResponse response = matchServiceClient.readIndexDatapoints(request);
}
Parameter | |
---|---|
Name | Description |
request | ReadIndexDatapointsRequest The request object containing all of the parameters for the API call. |
Returns | |
---|---|
Type | Description |
ReadIndexDatapointsResponse |
readIndexDatapointsCallable()
public final UnaryCallable<ReadIndexDatapointsRequest,ReadIndexDatapointsResponse> readIndexDatapointsCallable()
Reads the datapoints/vectors of the given IDs. A maximum of 1000 datapoints can be retrieved in a batch.
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 (MatchServiceClient matchServiceClient = MatchServiceClient.create()) {
ReadIndexDatapointsRequest request =
ReadIndexDatapointsRequest.newBuilder()
.setIndexEndpoint(
IndexEndpointName.of("[PROJECT]", "[LOCATION]", "[INDEX_ENDPOINT]").toString())
.setDeployedIndexId("deployedIndexId-1101212953")
.addAllIds(new ArrayList<String>())
.build();
ApiFuture<ReadIndexDatapointsResponse> future =
matchServiceClient.readIndexDatapointsCallable().futureCall(request);
// Do something.
ReadIndexDatapointsResponse response = future.get();
}
Returns | |
---|---|
Type | Description |
UnaryCallable<ReadIndexDatapointsRequest,ReadIndexDatapointsResponse> |
setIamPolicy(SetIamPolicyRequest request)
public final Policy setIamPolicy(SetIamPolicyRequest request)
Sets the access control policy on the specified resource. Replacesany existing policy.
Can return NOT_FOUND
, INVALID_ARGUMENT
, and PERMISSION_DENIED
errors.
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 (MatchServiceClient matchServiceClient = MatchServiceClient.create()) {
SetIamPolicyRequest request =
SetIamPolicyRequest.newBuilder()
.setResource(
EndpointName.ofProjectLocationEndpointName(
"[PROJECT]", "[LOCATION]", "[ENDPOINT]")
.toString())
.setPolicy(Policy.newBuilder().build())
.setUpdateMask(FieldMask.newBuilder().build())
.build();
Policy response = matchServiceClient.setIamPolicy(request);
}
Parameter | |
---|---|
Name | Description |
request | com.google.iam.v1.SetIamPolicyRequest The request object containing all of the parameters for the API call. |
Returns | |
---|---|
Type | Description |
com.google.iam.v1.Policy |
setIamPolicyCallable()
public final UnaryCallable<SetIamPolicyRequest,Policy> setIamPolicyCallable()
Sets the access control policy on the specified resource. Replacesany existing policy.
Can return NOT_FOUND
, INVALID_ARGUMENT
, and PERMISSION_DENIED
errors.
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 (MatchServiceClient matchServiceClient = MatchServiceClient.create()) {
SetIamPolicyRequest request =
SetIamPolicyRequest.newBuilder()
.setResource(
EndpointName.ofProjectLocationEndpointName(
"[PROJECT]", "[LOCATION]", "[ENDPOINT]")
.toString())
.setPolicy(Policy.newBuilder().build())
.setUpdateMask(FieldMask.newBuilder().build())
.build();
ApiFuture<Policy> future = matchServiceClient.setIamPolicyCallable().futureCall(request);
// Do something.
Policy response = future.get();
}
Returns | |
---|---|
Type | Description |
UnaryCallable<com.google.iam.v1.SetIamPolicyRequest,com.google.iam.v1.Policy> |
shutdown()
public void shutdown()
shutdownNow()
public void shutdownNow()
testIamPermissions(TestIamPermissionsRequest request)
public final TestIamPermissionsResponse testIamPermissions(TestIamPermissionsRequest request)
Returns permissions that a caller has on the specified resource. If theresource does not exist,
this will return an empty set ofpermissions, not a NOT_FOUND
error.
Note: This operation is designed to be used for buildingpermission-aware UIs and command-line tools, not for authorizationchecking. This operation may "fail open" without warning.
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 (MatchServiceClient matchServiceClient = MatchServiceClient.create()) {
TestIamPermissionsRequest request =
TestIamPermissionsRequest.newBuilder()
.setResource(
EndpointName.ofProjectLocationEndpointName(
"[PROJECT]", "[LOCATION]", "[ENDPOINT]")
.toString())
.addAllPermissions(new ArrayList<String>())
.build();
TestIamPermissionsResponse response = matchServiceClient.testIamPermissions(request);
}
Parameter | |
---|---|
Name | Description |
request | com.google.iam.v1.TestIamPermissionsRequest The request object containing all of the parameters for the API call. |
Returns | |
---|---|
Type | Description |
com.google.iam.v1.TestIamPermissionsResponse |
testIamPermissionsCallable()
public final UnaryCallable<TestIamPermissionsRequest,TestIamPermissionsResponse> testIamPermissionsCallable()
Returns permissions that a caller has on the specified resource. If theresource does not exist,
this will return an empty set ofpermissions, not a NOT_FOUND
error.
Note: This operation is designed to be used for buildingpermission-aware UIs and command-line tools, not for authorizationchecking. This operation may "fail open" without warning.
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 (MatchServiceClient matchServiceClient = MatchServiceClient.create()) {
TestIamPermissionsRequest request =
TestIamPermissionsRequest.newBuilder()
.setResource(
EndpointName.ofProjectLocationEndpointName(
"[PROJECT]", "[LOCATION]", "[ENDPOINT]")
.toString())
.addAllPermissions(new ArrayList<String>())
.build();
ApiFuture<TestIamPermissionsResponse> future =
matchServiceClient.testIamPermissionsCallable().futureCall(request);
// Do something.
TestIamPermissionsResponse response = future.get();
}
Returns | |
---|---|
Type | Description |
UnaryCallable<com.google.iam.v1.TestIamPermissionsRequest,com.google.iam.v1.TestIamPermissionsResponse> |