jetbrains.exodus.vfs.VfsSettings 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.StringBinding;
import jetbrains.exodus.env.Environment;
import jetbrains.exodus.env.Store;
import jetbrains.exodus.env.Transaction;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
/**
* VFS persistent settings
*/
class VfsSettings {
static final String NEXT_FREE_PATH_ID = "jetbrains.exodus.vfs.settings.nextFreePathId";
@NotNull
private final Environment env;
@NotNull
private final Store settingStore;
VfsSettings(@NotNull final Environment env, @NotNull final Store settingStore) {
this.env = env;
this.settingStore = settingStore;
}
ByteIterable get(@Nullable final Transaction txn, @NotNull final String settingName) {
final ArrayByteIterable key = StringBinding.stringToEntry(settingName);
if (txn != null) {
return settingStore.get(txn, key);
}
final ByteIterable[] result = new ByteIterable[1];
env.executeInTransaction(txn1 -> result[0] = settingStore.get(txn1, key));
return result[0];
}
void put(@Nullable final Transaction txn, @NotNull final String settingName, @NotNull final ByteIterable bi) {
final ArrayByteIterable key = StringBinding.stringToEntry(settingName);
if (txn != null) {
settingStore.put(txn, key, bi);
} else {
env.executeInTransaction(txn1 -> settingStore.put(txn1, key, bi));
}
}
}