PreparedStatementWriter.kt
/*
* Copyright (C) 2016 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.writer
import androidx.room.ext.L
import androidx.room.ext.N
import androidx.room.ext.RoomTypeNames
import androidx.room.solver.CodeGenScope
import com.squareup.javapoet.ClassName
import com.squareup.javapoet.FieldSpec
import com.squareup.javapoet.MethodSpec
import com.squareup.javapoet.TypeSpec
import javax.lang.model.element.Modifier
/**
* Creates anonymous classes for RoomTypeNames#SHARED_SQLITE_STMT.
*/
class PreparedStatementWriter(val queryWriter: QueryWriter) {
fun createAnonymous(classWriter: ClassWriter, dbParam: FieldSpec): TypeSpec {
val scope = CodeGenScope(classWriter)
@Suppress("RemoveSingleExpressionStringTemplate")
return TypeSpec.anonymousClassBuilder("$N", dbParam).apply {
superclass(RoomTypeNames.SHARED_SQLITE_STMT)
addMethod(
MethodSpec.methodBuilder("createQuery").apply {
addAnnotation(Override::class.java)
returns(ClassName.get("java.lang", "String"))
addModifiers(Modifier.PUBLIC)
val queryName = scope.getTmpVar("_query")
val queryGenScope = scope.fork()
queryWriter.prepareQuery(queryName, queryGenScope)
addCode(queryGenScope.builder().build())
addStatement("return $L", queryName)
}.build()
)
}.build()
}
}