DataSourceFactoryQueryResultBinder.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.query.result
import androidx.room.compiler.codegen.VisibilityModifier
import androidx.room.compiler.codegen.XFunSpec
import androidx.room.compiler.codegen.XPropertySpec
import androidx.room.compiler.codegen.XTypeName
import androidx.room.compiler.codegen.XTypeSpec
import androidx.room.ext.PagingTypeNames
import androidx.room.solver.CodeGenScope
class DataSourceFactoryQueryResultBinder(
val positionalDataSourceQueryResultBinder: PositionalDataSourceQueryResultBinder
) : QueryResultBinder(positionalDataSourceQueryResultBinder.listAdapter) {
val typeName: XTypeName = positionalDataSourceQueryResultBinder.itemTypeName
override fun convertAndReturn(
roomSQLiteQueryVar: String,
canReleaseQuery: Boolean,
dbProperty: XPropertySpec,
inTransaction: Boolean,
scope: CodeGenScope
) {
scope.builder.apply {
val pagedListProvider = XTypeSpec.anonymousClassBuilder(language)
.apply {
superclass(
PagingTypeNames.DATA_SOURCE_FACTORY.parametrizedBy(
XTypeName.BOXED_INT,
typeName
)
)
addCreateMethod(
roomSQLiteQueryVar = roomSQLiteQueryVar,
dbProperty = dbProperty,
inTransaction = inTransaction,
scope = scope
)
}
.build()
addStatement("return %L", pagedListProvider)
}
}
private fun XTypeSpec.Builder.addCreateMethod(
roomSQLiteQueryVar: String,
dbProperty: XPropertySpec,
inTransaction: Boolean,
scope: CodeGenScope
) {
addFunction(
XFunSpec.builder(
language = language,
name = "create",
visibility = VisibilityModifier.PUBLIC,
isOverride = true
).apply {
returns(positionalDataSourceQueryResultBinder.typeName)
val countedBinderScope = scope.fork()
positionalDataSourceQueryResultBinder.convertAndReturn(
roomSQLiteQueryVar = roomSQLiteQueryVar,
canReleaseQuery = true,
dbProperty = dbProperty,
inTransaction = inTransaction,
scope = countedBinderScope
)
addCode(countedBinderScope.generate())
}.build()
)
}
}