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QueryResult Class

  • Reference
Package:
com.microsoft.azure.sdk.iot.provisioning.service.configs
Maven Artifact:
com.microsoft.azure.sdk.iot.provisioning:provisioning-service-client:1.7.0
  • java.lang.Object
    • com.microsoft.azure.sdk.iot.provisioning.service.configs.QueryResult

public class QueryResult

Representation of a single Device Provisioning Service query response with a JSON deserializer.

It is the result of any query for the provisioning service. This class will parse the result and return it in a best format possible. For the known formats in QueryResultType, you can just cast the items. In case of unknown type, the items will contain a list of Strings and you shall parse it by your own.

The provisioning service query result is composed by 2 system properties and a body. This class exposes it with 3 getters, getType(), getContinuationToken(), and getItems().

The system properties are:

type:

Identify the type of the content in the body. You can use it to cast the objects in the items list. See QueryResultType for the possible types and classes to cast.

continuationToken:

Contains the token the uniquely identify the next page of information. The service will return the next page of this query when you send a new query with this token,

And the body is a JSON list of the specific type. For instance, if the system property type is IndividualEnrollment, the body will look like:

[
     {
         "registrationId":"validRegistrationId-1",
         "deviceId":"ContosoDevice-1",
         "attestation":{
             "type":"tpm",
             "tpm":{
                 "endorsementKey":"validEndorsementKey"
             }
         },
         "iotHubHostName":"ContosoIoTHub.azure-devices.net",
         "provisioningStatus":"enabled"
     },
     {
         "registrationId":"validRegistrationId-2",
         "deviceId":"ContosoDevice-2",
         "attestation":{
             "type":"tpm",
            "tpm":{
                 "endorsementKey":"validEndorsementKey"
             }
         },
         "iotHubHostName":"ContosoIoTHub.azure-devices.net",
         "provisioningStatus":"enabled"
     }
 ]

Constructor Summary

Modifier Constructor Description
protected QueryResult()

Empty constructor
QueryResult(String type, String body, String continuationToken)

CONSTRUCTOR

Method Summary

Modifier and Type Method and Description
java.lang.String getContinuationToken()

Getter for the continuationToken.
java.lang.Object[] getItems()

Getter for the items.
QueryResultType getType()

Getter for the type.
java.lang.String toString()

Creates a pretty print JSON with the content of this class and subclasses.

Methods inherited from java.lang.Object

java.lang.Object.clone java.lang.Object.equals java.lang.Object.finalize java.lang.Object.getClass java.lang.Object.hashCode java.lang.Object.notify java.lang.Object.notifyAll java.lang.Object.toString java.lang.Object.wait java.lang.Object.wait java.lang.Object.wait

Constructor Details

QueryResult

protected QueryResult()

Empty constructor

Used only by the tools that will deserialize this class.

QueryResult

public QueryResult(String type, String body, String continuationToken)

CONSTRUCTOR

This constructor creates an instance of the QueryResult.

Parameters:

type - the String with type of the content in the body. It cannot be null
body - the String with the body in a JSON list format. It cannot be null, or empty, if the type is different than unknown.
continuationToken - the String with the continuation token. It can be null.

Method Details

getContinuationToken

public String getContinuationToken()

Getter for the continuationToken.

Returns:

The String with the unique token that identify the next page of this query.

getItems

public Object[] getItems()

Getter for the items.

Returns:

The Object[] with the results of the query. You can cast it using the type.

getType

public QueryResultType getType()

Getter for the type.

Returns:

The QueryResultType with the type of the items Objects.

toString

public String toString()

Creates a pretty print JSON with the content of this class and subclasses.

The result of this function is not a valid JSON for the provisioning service, it is just to provide a way to print its content.

Overrides:

QueryResult.toString()

Returns:

The String with the pretty print JSON.

Applies to