InstantUpsertMethodBinder.kt

/*
 * 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.room.solver.shortcut.binder

import androidx.room.compiler.codegen.CodeLanguage
import androidx.room.compiler.codegen.XCodeBlock
import androidx.room.compiler.codegen.XMemberName.Companion.packageMember
import androidx.room.compiler.codegen.XPropertySpec
import androidx.room.compiler.codegen.box
import androidx.room.ext.InvokeWithLambdaParameter
import androidx.room.ext.LambdaSpec
import androidx.room.ext.RoomTypeNames
import androidx.room.ext.SQLiteDriverTypeNames
import androidx.room.ext.isNotVoid
import androidx.room.solver.CodeGenScope
import androidx.room.solver.shortcut.result.InsertOrUpsertMethodAdapter
import androidx.room.vo.ShortcutQueryParameter

/**
 * Binder that knows how to write instant (blocking) upsert methods.
 */
class InstantUpsertMethodBinder(adapter: InsertOrUpsertMethodAdapter?) :
    InsertOrUpsertMethodBinder(adapter) {

    override fun convertAndReturn(
        parameters: List<ShortcutQueryParameter>,
        adapters: Map<String, Pair<XPropertySpec, Any>>,
        dbProperty: XPropertySpec,
        scope: CodeGenScope
    ) {
        if (adapter == null) {
            return
        }
        val connectionVar = scope.getTmpVar("_connection")
        val performBlock = InvokeWithLambdaParameter(
            scope = scope,
            functionName = RoomTypeNames.DB_UTIL.packageMember("performBlocking"),
            argFormat = listOf("%N", "%L", "%L"),
            args = listOf(dbProperty, /* isReadOnly = */ false, /* inTransaction = */ true),
            lambdaSpec = object : LambdaSpec(
                parameterTypeName = SQLiteDriverTypeNames.CONNECTION,
                parameterName = connectionVar,
                returnTypeName = adapter.returnType.asTypeName().box(),
                javaLambdaSyntaxAvailable = scope.javaLambdaSyntaxAvailable
            ) {
                override fun XCodeBlock.Builder.body(scope: CodeGenScope) {
                    adapter.generateMethodBody(
                        scope = scope,
                        parameters = parameters,
                        adapters = adapters,
                        connectionVar = connectionVar
                    )
                }
            }
        )
        val returnPrefix = when (scope.language) {
            CodeLanguage.JAVA -> if (adapter.returnType.isNotVoid()) { "return " } else { "" }
            CodeLanguage.KOTLIN -> "return "
        }
        scope.builder.add("$returnPrefix%L", performBlock)
    }

    override fun convertAndReturnCompat(
        parameters: List<ShortcutQueryParameter>,
        adapters: Map<String, Pair<XPropertySpec, Any>>,
        dbProperty: XPropertySpec,
        scope: CodeGenScope
    ) {
        adapter?.generateMethodBodyCompat(
            parameters = parameters,
            adapters = adapters,
            dbProperty = dbProperty,
            scope = scope
        )
    }

    override fun isMigratedToDriver() = true
}