jetbrains.exodus.vfs.ClusterKey.kt Maven / Gradle / Ivy
/**
* Copyright 2010 - 2022 JetBrains s.r.o.
*
* 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
*
* https://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 jetbrains.exodus.vfs
import jetbrains.exodus.ArrayByteIterable
import jetbrains.exodus.ByteIterable
import jetbrains.exodus.bindings.LongBinding
import jetbrains.exodus.util.LightOutputStream
internal class ClusterKey(iterable: ByteIterable) {
val descriptor: Long
val clusterNumber: Long
init {
val iterator = iterable.iterator()
descriptor = LongBinding.readCompressed(iterator)
clusterNumber = LongBinding.readCompressed(iterator)
}
companion object {
@JvmStatic
fun toByteIterable(fd: Long, clusterNumber: Long): ArrayByteIterable {
val output = LightOutputStream(8)
val bytes = IntArray(8)
LongBinding.writeCompressed(output, fd, bytes)
LongBinding.writeCompressed(output, clusterNumber, bytes)
return output.asArrayByteIterable()
}
}
}