content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.datastax.dse.driver.internal.querybuilder.schema;
  
  import com.datastax.dse.driver.api.querybuilder.schema.DseGraphEdgeSide;
  import com.datastax.oss.driver.api.core.CqlIdentifier;
  import com.datastax.oss.driver.internal.querybuilder.CqlHelper;
  import java.util.List;
  
  public class DseTableEdgeOperation {
  
    private final DseTableGraphOperationType type;
    private final CqlIdentifier label;
    private final DseGraphEdgeSide from;
    private final DseGraphEdgeSide to;
  
    public DseTableEdgeOperation(
        DseTableGraphOperationType type,
        CqlIdentifier label,
        DseGraphEdgeSide from,
        DseGraphEdgeSide to) {
      this.type = type;
      this.label = label;
      this.from = from;
      this.to = to;
    }
  
    public DseTableGraphOperationType getType() {
      return type;
    }
  
    public CqlIdentifier getLabel() {
      return label;
    }
  
    public DseGraphEdgeSide getFrom() {
      return from;
    }
  
    public DseGraphEdgeSide getTo() {
      return to;
    }
  
    public void append(StringBuilder builder) {
      builder.append("EDGE LABEL");
      if (label != null) {
        builder.append(' ').append(label.asCql(true));
      }
      if (type == DseTableGraphOperationType.WITH) {
        builder.append(" FROM ");
        append(from, builder);
        builder.append(" TO ");
        append(to, builder);
      }
    }
  
    private static void append(DseGraphEdgeSide side, StringBuilder builder) {
      builder.append(side.getTableId().asCql(true)).append('(');
      List<CqlIdentifier> pkColumns = side.getPartitionKeyColumns();
      if (pkColumns.size() == 1) {
        builder.append(pkColumns.get(0).asCql(true));
      } else {
        CqlHelper.appendIds(pkColumns, builder, "(", ",", ")");
      }
      CqlHelper.appendIds(side.getClusteringColumns(), builder, ",", ",", null);
      builder.append(')');
    }
  }
  