| /* |
| * 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.prepared.result |
| |
| import androidx.room.compiler.codegen.CodeLanguage |
| import androidx.room.compiler.codegen.XCodeBlock.Builder.Companion.addLocalVal |
| import androidx.room.compiler.codegen.XPropertySpec |
| import androidx.room.compiler.processing.XType |
| import androidx.room.compiler.processing.isInt |
| import androidx.room.compiler.processing.isKotlinUnit |
| import androidx.room.compiler.processing.isLong |
| import androidx.room.compiler.processing.isVoid |
| import androidx.room.compiler.processing.isVoidObject |
| import androidx.room.ext.KotlinTypeNames |
| import androidx.room.parser.QueryType |
| import androidx.room.solver.CodeGenScope |
| import androidx.room.solver.prepared.binder.PreparedQueryResultBinder |
| |
| /** |
| * An adapter for [PreparedQueryResultBinder] that executes queries with INSERT, UPDATE or DELETE |
| * statements. |
| */ |
| class PreparedQueryResultAdapter( |
| private val returnType: XType, |
| private val queryType: QueryType |
| ) { |
| companion object { |
| fun create( |
| returnType: XType, |
| queryType: QueryType |
| ) = if (isValidReturnType(returnType, queryType)) { |
| PreparedQueryResultAdapter(returnType, queryType) |
| } else { |
| null |
| } |
| |
| private fun isValidReturnType(returnType: XType, queryType: QueryType): Boolean { |
| if (returnType.isVoid() || returnType.isVoidObject() || returnType.isKotlinUnit()) { |
| return true |
| } else { |
| return when (queryType) { |
| QueryType.INSERT -> returnType.isLong() |
| QueryType.UPDATE, QueryType.DELETE -> returnType.isInt() |
| else -> false |
| } |
| } |
| } |
| } |
| |
| fun executeAndReturn( |
| stmtQueryVal: String, |
| preparedStmtProperty: XPropertySpec?, |
| dbProperty: XPropertySpec, |
| scope: CodeGenScope |
| ) { |
| scope.builder.apply { |
| val stmtMethod = if (queryType == QueryType.INSERT) { |
| "executeInsert" |
| } else { |
| "executeUpdateDelete" |
| } |
| addStatement("%N.beginTransaction()", dbProperty) |
| beginControlFlow("try").apply { |
| if (returnType.isVoid() || returnType.isVoidObject() || returnType.isKotlinUnit()) { |
| addStatement("%L.%L()", stmtQueryVal, stmtMethod) |
| addStatement("%N.setTransactionSuccessful()", dbProperty) |
| if (returnType.isVoidObject()) { |
| addStatement("return null") |
| } else if (returnType.isKotlinUnit() && language == CodeLanguage.JAVA) { |
| addStatement("return %T.INSTANCE", KotlinTypeNames.UNIT) |
| } |
| } else { |
| val resultVar = scope.getTmpVar("_result") |
| addLocalVal( |
| resultVar, |
| returnType.asTypeName(), |
| "%L.%L()", |
| stmtQueryVal, stmtMethod |
| ) |
| addStatement("%N.setTransactionSuccessful()", dbProperty) |
| addStatement("return %L", resultVar) |
| } |
| } |
| nextControlFlow("finally").apply { |
| addStatement("%N.endTransaction()", dbProperty) |
| if (preparedStmtProperty != null) { |
| addStatement("%N.release(%L)", preparedStmtProperty, stmtQueryVal) |
| } |
| } |
| endControlFlow() |
| } |
| } |
| } |
