DocumentChangeInfo

Kotlin |Java

class DocumentChangeInfo

kotlin.Any
↳	android.app.appsearch.observer.DocumentChangeInfo

Contains information about an individual change detected by an ObserverCallback.

This class reports information about document changes, that is, when documents were added, updated or removed.

Changes are grouped by package, database, schema type and namespace. Each unique combination of these items will generate a unique DocumentChangeInfo.

Notifications are only sent for documents whose schema type matches an observer's schema filters (as determined by ObserverSpec#getFilterSchemas).

Note that document changes that happen during schema migration from calling android.app.appsearch.AppSearchSession#setSchema are not reported via this class. Such changes are reported through SchemaChangeInfo.

Summary

Public constructors
`DocumentChangeInfo(packageName: String, database: String, namespace: String, schemaName: String, changedDocumentIds: MutableSet<String!>)` Constructs a new `DocumentChangeInfo`.

Public methods
Boolean	`equals(other: Any?)` Indicates whether some other object is "equal to" this one.
MutableSet<String!>	`getChangedDocumentIds()` Returns the set of document IDs that have been changed as part of this notification.
String	`getDatabaseName()` Returns the database in which the documents that was changed reside.
String	`getNamespace()` Returns the namespace of the documents that changed.
String	`getPackageName()` Returns the package name of the app which owns the documents that changed.
String	`getSchemaName()` Returns the name of the schema type that contains the changed documents.
Int	`hashCode()`
String	`toString()` Returns a string representation of the object.

Public constructors

DocumentChangeInfo

Added in API level 33

DocumentChangeInfo(
    packageName: String, 
    database: String, 
    namespace: String, 
    schemaName: String, 
    changedDocumentIds: MutableSet<String!>)

Constructs a new DocumentChangeInfo.

Parameters
`packageName`	String: The package name of the app which owns the documents that changed. This value cannot be `null`.
`database`	String: The database in which the documents that changed reside. This value cannot be `null`.
`namespace`	String: The namespace in which the documents that changed reside. This value cannot be `null`.
`schemaName`	String: The name of the schema type that contains the changed documents. This value cannot be `null`.
`changedDocumentIds`	MutableSet<String!>: The set of document IDs that have been changed as part of this notification. This value cannot be `null`.

Public methods

equals

Added in API level 33

fun equals(other: Any?): Boolean

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

It is reflexive: for any non-null reference value x, x.equals(x) should return true.
It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters
`obj`	the reference object with which to compare.
`o`	This value may be `null`.

Return
`Boolean`	`true` if this object is the same as the obj argument; `false` otherwise.

getChangedDocumentIds

Added in API level 33

fun getChangedDocumentIds(): MutableSet<String!>

Returns the set of document IDs that have been changed as part of this notification.

This will never be empty.

Return
`MutableSet<String!>`	This value cannot be `null`.

getDatabaseName

Added in API level 33

fun getDatabaseName(): String

Returns the database in which the documents that was changed reside.

Return
`String`	This value cannot be `null`.

getNamespace

Added in API level 33

fun getNamespace(): String

Returns the namespace of the documents that changed.

Return
`String`	This value cannot be `null`.

getPackageName

Added in API level 33

fun getPackageName(): String

Returns the package name of the app which owns the documents that changed.

Return
`String`	This value cannot be `null`.

getSchemaName

Added in API level 33

fun getSchemaName(): String

Returns the name of the schema type that contains the changed documents.

Return
`String`	This value cannot be `null`.

hashCode

Added in API level 33

fun hashCode(): Int

Return
`Int`	a hash code value for this object.

toString

Added in API level 33

fun toString(): String

Returns a string representation of the object.

Return
`String`	This value cannot be `null`.