org.jetbrains.jet.buildergen.entities.EntityUtil.java Source code

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Here is the source code for org.jetbrains.jet.buildergen.entities.EntityUtil.java

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/*
 * Copyright 2010-2012 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
 *
 * 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.jetbrains.jet.buildergen.entities;

import com.google.common.collect.Lists;
import com.google.common.collect.Sets;
import org.jetbrains.annotations.NotNull;

import java.util.Collection;
import java.util.Set;

/**
 * @author abreslav
 */
public class EntityUtil {
    @NotNull
    public static Collection<Relation<?>> getAllRelations(@NotNull Entity entity) {
        Collection<Relation<?>> result = Lists.newArrayList();
        Set<Relation<?>> visited = Sets.newHashSet();
        collectAllRelations(entity, result, visited);
        return result;
    }

    private static void collectAllRelations(Entity entity, Collection<Relation<?>> result,
            Collection<Relation<?>> visited) {
        for (Relation<?> relation : entity.getRelations()) {
            if (visited.add(relation)) {
                result.add(relation);
            }
        }
        for (Entity superEntity : entity.getSuperEntities()) {
            collectAllRelations(superEntity, result, visited);
        }
    }
}