ByteBufferColumnTypeAdapter.kt
/*
* Copyright 2019 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.ext.L
import androidx.room.ext.T
import androidx.room.parser.SQLTypeAffinity
import androidx.room.compiler.processing.XProcessingEnv
import androidx.room.solver.CodeGenScope
import com.squareup.javapoet.TypeName
import java.nio.ByteBuffer
class ByteBufferColumnTypeAdapter(env: XProcessingEnv) : ColumnTypeAdapter(
out = env.requireType("java.nio.ByteBuffer"),
typeAffinity = SQLTypeAffinity.BLOB
) {
override fun readFromCursor(
outVarName: String,
cursorVarName: String,
indexVarName: String,
scope: CodeGenScope
) {
scope.builder()
.addStatement("$L = $T.wrap($L.getBlob($L))",
outVarName, TypeName.get(ByteBuffer::class.java), cursorVarName, indexVarName)
}
override fun bindToStmt(
stmtName: String,
indexVarName: String,
valueVarName: String,
scope: CodeGenScope
) {
scope.builder().apply {
beginControlFlow("if ($L == null)", valueVarName)
.addStatement("$L.bindNull($L)", stmtName, indexVarName)
nextControlFlow("else")
.addStatement("$L.bindBlob($L, $L.array())", stmtName, indexVarName, valueVarName)
endControlFlow()
}
}
}