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EnvFlagSet.java
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76 lines (68 loc) · 2.41 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 java.util.Collection;
import java.util.Objects;
/** An immutable set of flags for use when opening the {@link Env}. */
public interface EnvFlagSet extends FlagSet<EnvFlags> {
/** An immutable empty {@link EnvFlagSet}. */
EnvFlagSet EMPTY = EnvFlagSetImpl.EMPTY;
/**
* Gets the immutable empty {@link EnvFlagSet} instance.
*
* @return The immutable empty {@link EnvFlagSet} instance.
*/
static EnvFlagSet empty() {
return EnvFlagSetImpl.EMPTY;
}
/**
* Creates an immutable {@link EnvFlagSet} containing envFlag.
*
* @param envFlag The flag to include in the {@link EnvFlagSet}
* @return An immutable {@link EnvFlagSet} containing just envFlag.
*/
static EnvFlagSet of(final EnvFlags envFlag) {
Objects.requireNonNull(envFlag);
return envFlag;
}
/**
* Creates an immutable {@link EnvFlagSet} containing envFlags.
*
* @param envFlags The flags to include in the {@link EnvFlagSet}.
* @return An immutable {@link EnvFlagSet} containing envFlags.
*/
static EnvFlagSet of(final EnvFlags... envFlags) {
return builder().setFlags(envFlags).build();
}
/**
* Creates an immutable {@link EnvFlagSet} containing envFlags.
*
* @param envFlags The flags to include in the {@link EnvFlagSet}.
* @return An immutable {@link EnvFlagSet} containing envFlags.
*/
static EnvFlagSet of(final Collection<EnvFlags> envFlags) {
return builder().setFlags(envFlags).build();
}
/**
* Create a builder for building an {@link EnvFlagSet}.
*
* @return A builder instance for building an {@link EnvFlagSet}.
*/
static AbstractFlagSet.Builder<EnvFlags, EnvFlagSet> builder() {
return new AbstractFlagSet.Builder<>(
EnvFlags.class, EnvFlagSetImpl::new, envFlag -> envFlag, () -> EnvFlagSetImpl.EMPTY);
}
}