Dependency.kt
/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.work.impl.model
import androidx.annotation.RestrictTo
import androidx.room.ColumnInfo
import androidx.room.Entity
import androidx.room.ForeignKey
import androidx.room.Index
/**
* Database entity that defines a dependency between two [WorkSpec]s.
*
* @hide
*/
@Entity(
foreignKeys = [ForeignKey(
entity = WorkSpec::class,
parentColumns = ["id"],
childColumns = ["work_spec_id"],
onDelete = ForeignKey.CASCADE,
onUpdate = ForeignKey.CASCADE
), ForeignKey(
entity = WorkSpec::class,
parentColumns = ["id"],
childColumns = ["prerequisite_id"],
onDelete = ForeignKey.CASCADE,
onUpdate = ForeignKey.CASCADE
)],
primaryKeys = ["work_spec_id", "prerequisite_id"],
indices = [Index(value = ["work_spec_id"]), Index(value = ["prerequisite_id"])]
)
@RestrictTo(RestrictTo.Scope.LIBRARY_GROUP)
class Dependency(
@ColumnInfo(name = "work_spec_id")
val workSpecId: String,
@ColumnInfo(name = "prerequisite_id")
val prerequisiteId: String
)