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ResultCodeMapper.java
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106 lines (97 loc) · 3.86 KB
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/*
* Copyright © 2016-2025 The LmdbJava 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 org.lmdbjava;
import static jnr.constants.ConstantSet.getConstantSet;
import jnr.constants.Constant;
import jnr.constants.ConstantSet;
import org.lmdbjava.Txn.BadException;
import org.lmdbjava.Txn.BadReaderLockException;
import org.lmdbjava.Txn.TxFullException;
/**
* Maps a LMDB C result code to the equivalent Java exception.
*
* <p>The immutable nature of all LMDB exceptions means the mapper internally maintains a table of
* them.
*/
final class ResultCodeMapper {
/** Successful result. */
static final int MDB_SUCCESS = 0;
private static final ConstantSet CONSTANTS;
private static final String POSIX_ERR_NO = "Errno";
static {
CONSTANTS = getConstantSet(POSIX_ERR_NO);
}
private ResultCodeMapper() {}
/**
* Checks the result code and raises an exception is not {@link #MDB_SUCCESS}.
*
* @param rc the LMDB result code
*/
static void checkRc(final int rc) {
switch (rc) {
case MDB_SUCCESS:
return;
case Dbi.BadDbiException.MDB_BAD_DBI:
throw new Dbi.BadDbiException();
case BadReaderLockException.MDB_BAD_RSLOT:
throw new BadReaderLockException();
case BadException.MDB_BAD_TXN:
throw new BadException();
case Dbi.BadValueSizeException.MDB_BAD_VALSIZE:
throw new Dbi.BadValueSizeException();
case LmdbNativeException.PageCorruptedException.MDB_CORRUPTED:
throw new LmdbNativeException.PageCorruptedException();
case Cursor.FullException.MDB_CURSOR_FULL:
throw new Cursor.FullException();
case Dbi.DbFullException.MDB_DBS_FULL:
throw new Dbi.DbFullException();
case Dbi.IncompatibleException.MDB_INCOMPATIBLE:
throw new Dbi.IncompatibleException();
case Env.FileInvalidException.MDB_INVALID:
throw new Env.FileInvalidException();
case Dbi.KeyExistsException.MDB_KEYEXIST:
throw new Dbi.KeyExistsException();
case Env.MapFullException.MDB_MAP_FULL:
throw new Env.MapFullException();
case Dbi.MapResizedException.MDB_MAP_RESIZED:
throw new Dbi.MapResizedException();
case Dbi.KeyNotFoundException.MDB_NOTFOUND:
throw new Dbi.KeyNotFoundException();
case LmdbNativeException.PageFullException.MDB_PAGE_FULL:
throw new LmdbNativeException.PageFullException();
case LmdbNativeException.PageNotFoundException.MDB_PAGE_NOTFOUND:
throw new LmdbNativeException.PageNotFoundException();
case LmdbNativeException.PanicException.MDB_PANIC:
throw new LmdbNativeException.PanicException();
case Env.ReadersFullException.MDB_READERS_FULL:
throw new Env.ReadersFullException();
case LmdbNativeException.TlsFullException.MDB_TLS_FULL:
throw new LmdbNativeException.TlsFullException();
case TxFullException.MDB_TXN_FULL:
throw new TxFullException();
case Env.VersionMismatchException.MDB_VERSION_MISMATCH:
throw new Env.VersionMismatchException();
default:
break;
}
final Constant constant = CONSTANTS.getConstant(rc);
if (constant == null) {
throw new IllegalArgumentException("Unknown result code " + rc);
}
final String msg = constant.name() + " " + constant.toString();
throw new LmdbNativeException.ConstantDerivedException(rc, msg);
}
}