/*
* Copyright 2018 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
/**
* An [InputMerger] that attempts to add all keys from all inputs to the output. In case of a
* conflict, this class will overwrite the previously-set key. Because there is no defined order
* for inputs, this implementation is best suited for cases where conflicts will not happen, or
* where overwriting is a valid strategy to deal with them.
*/
class OverwritingInputMerger : InputMerger() {
override fun merge(inputs: List<Data>): Data {
val output = Data.Builder()
val mergedValues = mutableMapOf<String, Any>()
for (input in inputs) {
mergedValues.putAll(input.keyValueMap)
}
output.putAll(mergedValues)
return output.build()
}
}