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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.maven.plugins.dependency.tree;
20  
21  import java.io.PrintWriter;
22  import java.io.Writer;
23  
24  /**
25   * Abstract class for visitors performing serialization.
26   *
27   * @author <a href="mailto:jerome.creignou@gmail.com">Jerome Creignou</a>
28   */
29  public abstract class AbstractSerializingVisitor {
30  
31      /**
32       * The writer to serialize to.
33       */
34      protected final PrintWriter writer;
35  
36      /**
37       * Constructor.
38       * <p>
39       * Build a new AbstractSerializingDependencyNodeVisitor with the writer to serialize to.
40       * </p>
41       *
42       * @param writer the writer to serialize to.
43       */
44      public AbstractSerializingVisitor(Writer writer) {
45          if (writer instanceof PrintWriter) {
46              this.writer = (PrintWriter) writer;
47          } else {
48              this.writer = new PrintWriter(writer, true);
49          }
50      }
51  }