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// Copyright 2016 The Bazel Authors. All rights reserved.
//
// 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 com.google.devtools.build.skyframe;
import java.util.EnumSet;
/**
* Fields of a {@link NodeEntry} that clients of a {@link QueryableGraph} may need. Clients may
* specify these fields in {@link QueryableGraph#getBatchWithFieldHints} to help particular {@link
* QueryableGraph} implementations decide how lazily to construct the returned node entries.
*/
public enum NodeEntryField {
/** The value ({@link NodeEntry#getValueMaybeWithMetadata}) will be needed. */
VALUE,
/** The direct deps ({@link NodeEntry#getDirectDeps}) will be needed. */
DIRECT_DEPS,
/** The reverse deps ({@link NodeEntry#getReverseDeps}) will be needed. */
REVERSE_DEPS,
/**
* The reverse deps as a whole will not be needed, but we may need to check the presence of a
* reverse dep or add/delete one.
*/
INDIVIDUAL_REVERSE_DEPS;
public static final EnumSet<NodeEntryField> NO_FIELDS = EnumSet.noneOf(NodeEntryField.class);
public static final EnumSet<NodeEntryField> VALUE_ONLY = EnumSet.of(VALUE);
public static final EnumSet<NodeEntryField> NO_VALUE = EnumSet.of(DIRECT_DEPS, REVERSE_DEPS);
public static final EnumSet<NodeEntryField> ALL_FIELDS =
EnumSet.of(VALUE, DIRECT_DEPS, REVERSE_DEPS);
}
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