1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package androidx.room.solver.query.parameter 18 19 import androidx.room.ext.L 20 import androidx.room.ext.T 21 import androidx.room.ext.typeName 22 import androidx.room.solver.CodeGenScope 23 import androidx.room.solver.types.StatementValueBinder 24 import com.squareup.javapoet.TypeName 25 26 /** 27 * Binds Collection<T> (e.g. List<T>) into String[] query args. 28 */ 29 class CollectionQueryParameterAdapter(val bindAdapter: StatementValueBinder) 30 : QueryParameterAdapter(true) { 31 override fun bindToStmt(inputVarName: String, stmtVarName: String, startIndexVarName: String, 32 scope: CodeGenScope) { 33 scope.builder().apply { 34 val itrVar = scope.getTmpVar("_item") 35 beginControlFlow("for ($T $L : $L)", bindAdapter.typeMirror().typeName(), itrVar, 36 inputVarName).apply { 37 bindAdapter.bindToStmt(stmtVarName, startIndexVarName, itrVar, scope) 38 addStatement("$L ++", startIndexVarName) 39 } 40 endControlFlow() 41 } 42 } 43 44 override fun getArgCount(inputVarName: String, outputVarName: String, scope: CodeGenScope) { 45 scope.builder() 46 .addStatement("final $T $L = $L.size()", TypeName.INT, outputVarName, inputVarName) 47 } 48 } 49
