UuidColumnTypeAdapter.kt
/*
* Copyright 2021 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.processing.XType
import androidx.room.ext.L
import androidx.room.ext.RoomTypeNames
import androidx.room.ext.T
import androidx.room.parser.SQLTypeAffinity
import androidx.room.solver.CodeGenScope
class UuidColumnTypeAdapter(
out: XType,
) : ColumnTypeAdapter(
out = out,
typeAffinity = SQLTypeAffinity.BLOB
) {
override fun bindToStmt(
stmtName: String,
indexVarName: String,
valueVarName: String,
scope: CodeGenScope
) {
scope.builder().apply {
val conversionMethodName = "convertUUIDToByte"
beginControlFlow("if ($L == null)", valueVarName)
.addStatement("$L.bindNull($L)", stmtName, indexVarName)
nextControlFlow("else")
.addStatement(
"$L.bindBlob($L, $T.$L($L))",
stmtName,
indexVarName,
RoomTypeNames.UUID_UTIL,
conversionMethodName,
valueVarName,
)
endControlFlow()
}
}
override fun readFromCursor(
outVarName: String,
cursorVarName: String,
indexVarName: String,
scope: CodeGenScope
) {
scope.builder().apply {
val conversionMethodName = "convertByteToUUID"
beginControlFlow("if ($L.isNull($L))", cursorVarName, indexVarName)
.addStatement("$L = null", outVarName)
nextControlFlow("else")
.addStatement(
"$L = $T.$L($L.getBlob($L))",
outVarName,
RoomTypeNames.UUID_UTIL,
conversionMethodName,
cursorVarName,
indexVarName
)
endControlFlow()
}
}
}