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PutFlags.java

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 0.9

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PutFlags.java

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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;

/** Flags for use when performing a "put". */

public enum PutFlags implements MaskedFlag {

/** For put: Don't write if the key already exists. */

MDB_NOOVERWRITE(0x10),

/**

* Only for #MDB_DUPSORT<br>

* For put: don't write if the key and data pair already exist.<br>

* For mdb_cursor_del: remove all duplicate data items.

*/

MDB_NODUPDATA(0x20),

/** For mdb_cursor_put: overwrite the current key/data pair. */

MDB_CURRENT(0x40),

/**

* For put: Just reserve space for data, don't copy it. Return a pointer to the reserved space.

*/

MDB_RESERVE(0x1_0000),

/** Data is being appended, don't split full pages. */

MDB_APPEND(0x2_0000),

/** Duplicate data is being appended, don't split full pages. */

MDB_APPENDDUP(0x4_0000),

/** Store multiple data items in one call. Only for #MDB_DUPFIXED. */

MDB_MULTIPLE(0x8_0000);

private final int mask;

PutFlags(final int mask) {

this.mask = mask;

}

@Override

public int getMask() {

return mask;

}

}