ArrayQueryResultAdapter.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.solver.query.result
import androidx.room.compiler.processing.isArray
import androidx.room.ext.L
import androidx.room.ext.T
import androidx.room.solver.CodeGenScope
import com.squareup.javapoet.ArrayTypeName
import com.squareup.javapoet.TypeName
class ArrayQueryResultAdapter(
private val rowAdapter: RowAdapter
) : QueryResultAdapter(listOf(rowAdapter)) {
val type = rowAdapter.out
override fun convert(outVarName: String, cursorVarName: String, scope: CodeGenScope) {
scope.builder().apply {
rowAdapter.onCursorReady(cursorVarName = cursorVarName, scope = scope)
val arrayType = ArrayTypeName.of(type.typeName)
if (type.isArray()) {
addStatement(
"final $T $L = new $T[$L.getCount()][]",
arrayType, outVarName, type.componentType.typeName, cursorVarName
)
} else {
addStatement(
"final $T $L = new $T[$L.getCount()]",
arrayType, outVarName, type.typeName, cursorVarName
)
}
val tmpVarName = scope.getTmpVar("_item")
val indexVar = scope.getTmpVar("_index")
addStatement("$T $L = 0", TypeName.INT, indexVar)
beginControlFlow("while($L.moveToNext())", cursorVarName).apply {
addStatement("final $T $L", type.typeName, tmpVarName)
rowAdapter.convert(tmpVarName, cursorVarName, scope)
addStatement("$L[$L] = $L", outVarName, indexVar, tmpVarName)
addStatement("$L ++", indexVar)
}
endControlFlow()
}
}
}