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/*
 * Copyright © 2021-present Arcade Data Ltd ([email protected])
 *
 * 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.
 *
 * SPDX-FileCopyrightText: 2021-present Arcade Data Ltd ([email protected])
 * SPDX-License-Identifier: Apache-2.0
 */
package com.arcadedb.query.sql.function.graph;

import com.arcadedb.database.Database;
import com.arcadedb.database.Identifiable;
import com.arcadedb.graph.Vertex;

import java.util.*;

/**
 * Created by luigidellaquila on 03/01/17.
 */
public class SQLFunctionOut extends SQLFunctionMoveFiltered {
  public static final String NAME = "out";

  public SQLFunctionOut() {
    super(NAME);
  }

  @Override
  protected Object move(final Database graph, final Identifiable iRecord, final String[] iLabels) {
    return v2v(graph, iRecord, Vertex.DIRECTION.OUT, iLabels);
  }

  protected Object move(final Database graph, final Identifiable iRecord, final String[] iLabels, final Iterable iPossibleResults) {
    if (iPossibleResults == null) {
      return v2v(graph, iRecord, Vertex.DIRECTION.OUT, iLabels);
    }

    if (!iPossibleResults.iterator().hasNext()) {
      return Collections.emptyList();
    }

    return v2v(graph, iRecord, Vertex.DIRECTION.OUT, iLabels);
  }
}