ByteArrayColumnTypeAdapter.kt
/*
* Copyright (C) 2017 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.types
import androidx.room.compiler.codegen.XTypeName
import androidx.room.compiler.processing.XNullability
import androidx.room.compiler.processing.XProcessingEnv
import androidx.room.compiler.processing.XType
import androidx.room.parser.SQLTypeAffinity
import androidx.room.solver.CodeGenScope
class ByteArrayColumnTypeAdapter private constructor(
out: XType
) : ColumnTypeAdapter(
out = out,
typeAffinity = SQLTypeAffinity.BLOB
) {
override fun readFromCursor(
outVarName: String,
cursorVarName: String,
indexVarName: String,
scope: CodeGenScope
) {
scope.builder.apply {
if (out.nullability == XNullability.NONNULL) {
addStatement("%L = %L.getBlob(%L)", outVarName, cursorVarName, indexVarName)
} else {
beginControlFlow("if (%L.isNull(%L))", cursorVarName, indexVarName).apply {
addStatement("%L = null", outVarName)
}
nextControlFlow("else").apply {
addStatement("%L = %L.getBlob(%L)", outVarName, cursorVarName, indexVarName)
}
endControlFlow()
}
}
}
override fun bindToStmt(
stmtName: String,
indexVarName: String,
valueVarName: String,
scope: CodeGenScope
) {
scope.builder.apply {
if (out.nullability == XNullability.NONNULL) {
addStatement("%L.bindBlob(%L, %L)", stmtName, indexVarName, valueVarName)
} else {
beginControlFlow("if (%L == null)", valueVarName)
.addStatement("%L.bindNull(%L)", stmtName, indexVarName)
nextControlFlow("else")
.addStatement("%L.bindBlob(%L, %L)", stmtName, indexVarName, valueVarName)
endControlFlow()
}
}
}
companion object {
fun create(env: XProcessingEnv): List<ByteArrayColumnTypeAdapter> {
val arrayType = env.getArrayType(env.requireType(XTypeName.PRIMITIVE_BYTE))
return if (env.backend == XProcessingEnv.Backend.KSP) {
listOf(
ByteArrayColumnTypeAdapter(arrayType.makeNonNullable()),
ByteArrayColumnTypeAdapter(arrayType.makeNullable())
)
} else {
listOf(
ByteArrayColumnTypeAdapter(
out = arrayType
)
)
}
}
}
}