TransactionWrapper.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.room.solver.query.result
import androidx.room.compiler.codegen.XCodeBlock
/**
* helper class to create correct transaction code.
*/
interface TransactionWrapper {
fun beginTransactionWithControlFlow()
fun commitTransaction()
fun endTransactionWithControlFlow()
}
fun XCodeBlock.Builder.transactionWrapper(dbPropertyName: String) = object : TransactionWrapper {
override fun beginTransactionWithControlFlow() {
addStatement("%N.beginTransaction()", dbPropertyName)
beginControlFlow("try")
}
override fun commitTransaction() {
addStatement("%N.setTransactionSuccessful()", dbPropertyName)
}
override fun endTransactionWithControlFlow() {
nextControlFlow("finally")
addStatement("%N.endTransaction()", dbPropertyName)
endControlFlow()
}
}