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.codegen.XCodeBlock
import androidx.room.compiler.codegen.XMemberName.Companion.packageMember
import androidx.room.compiler.processing.XNullability
import androidx.room.compiler.processing.XType
import androidx.room.ext.RoomTypeNames
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 {
fun XCodeBlock.Builder.addBindBlobStatement() {
addStatement(
"%L.bindBlob(%L, %M(%L))",
stmtName,
indexVarName,
RoomTypeNames.UUID_UTIL.packageMember("convertUUIDToByte"),
valueVarName,
)
}
if (out.nullability == XNullability.NONNULL) {
addBindBlobStatement()
} else {
beginControlFlow("if (%L == null)", valueVarName)
.addStatement("%L.bindNull(%L)", stmtName, indexVarName)
nextControlFlow("else")
addBindBlobStatement()
endControlFlow()
}
}
}
override fun readFromCursor(
outVarName: String,
cursorVarName: String,
indexVarName: String,
scope: CodeGenScope
) {
scope.builder.apply {
fun XCodeBlock.Builder.addGetBlobStatement() {
addStatement(
"%L = %M(%L.getBlob(%L))",
outVarName,
RoomTypeNames.UUID_UTIL.packageMember("convertByteToUUID"),
cursorVarName,
indexVarName
)
}
if (out.nullability == XNullability.NONNULL) {
addGetBlobStatement()
} else {
beginControlFlow("if (%L.isNull(%L))", cursorVarName, indexVarName)
.addStatement("%L = null", outVarName)
nextControlFlow("else")
.addGetBlobStatement()
endControlFlow()
}
}
}
}