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.compiler.codegen.VisibilityModifier
import androidx.room.compiler.codegen.XFunSpec
import androidx.room.compiler.codegen.XFunSpec.Builder.Companion.addStatement
import androidx.room.compiler.codegen.XPropertySpec
import androidx.room.compiler.codegen.XTypeSpec
import androidx.room.ext.CommonTypeNames
import androidx.room.ext.RoomTypeNames
import androidx.room.solver.CodeGenScope
/**
* Creates anonymous classes for RoomTypeNames#SHARED_SQLITE_STMT.
*/
class PreparedStatementWriter(val queryWriter: QueryWriter) {
fun createAnonymous(typeWriter: TypeWriter, dbProperty: XPropertySpec): XTypeSpec {
val scope = CodeGenScope(typeWriter)
return XTypeSpec.anonymousClassBuilder(scope.language, "%N", dbProperty).apply {
superclass(RoomTypeNames.SHARED_SQLITE_STMT)
addFunction(
XFunSpec.builder(
language = scope.language,
name = "createQuery",
visibility = VisibilityModifier.PUBLIC,
isOverride = true
).apply {
returns(CommonTypeNames.STRING)
val queryName = scope.getTmpVar("_query")
val queryGenScope = scope.fork()
queryWriter.prepareQuery(queryName, queryGenScope)
addCode(queryGenScope.generate())
addStatement("return %L", queryName)
}.build()
)
}.build()
}
}