Dao

public abstract @interface Dao
implements Annotation

android.arch.persistence.room.Dao

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Marks the class as a Data Access Object.

Data Access Objects are the main classes where you define your database interactions. They can include a variety of query methods.

The class marked with @Dao should either be an interface or an abstract class. At compile time, Room will generate an implementation of this class when it is referenced by a Database.

An abstract @Dao class can optionally have a constructor that takes a Database as its only parameter.

It is recommended to have multiple Dao classes in your codebase depending on the tables they touch.

Summary

Inherited methods
From interface java.lang.annotation.Annotation abstract Class<? extends Annotation> annotationType() abstract boolean equals(Object arg0) abstract int hashCode() abstract String toString()