JsonFactoryFactory.java

/*
 * Portions of this software was developed by employees of the National Institute
 * of Standards and Technology (NIST), an agency of the Federal Government and is
 * being made available as a public service. Pursuant to title 17 United States
 * Code Section 105, works of NIST employees are not subject to copyright
 * protection in the United States. This software may be subject to foreign
 * copyright. Permission in the United States and in foreign countries, to the
 * extent that NIST may hold copyright, to use, copy, modify, create derivative
 * works, and distribute this software and its documentation without fee is hereby
 * granted on a non-exclusive basis, provided that this notice and disclaimer
 * of warranty appears in all copies.
 *
 * THE SOFTWARE IS PROVIDED 'AS IS' WITHOUT ANY WARRANTY OF ANY KIND, EITHER
 * EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY
 * THAT THE SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND FREEDOM FROM
 * INFRINGEMENT, AND ANY WARRANTY THAT THE DOCUMENTATION WILL CONFORM TO THE
 * SOFTWARE, OR ANY WARRANTY THAT THE SOFTWARE WILL BE ERROR FREE.  IN NO EVENT
 * SHALL NIST BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO, DIRECT,
 * INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM,
 * OR IN ANY WAY CONNECTED WITH THIS SOFTWARE, WHETHER OR NOT BASED UPON WARRANTY,
 * CONTRACT, TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR
 * PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM, OR AROSE OUT
 * OF THE RESULTS OF, OR USE OF, THE SOFTWARE OR SERVICES PROVIDED HEREUNDER.
 */

package gov.nist.secauto.metaschema.databind.io.json;

import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;

import edu.umd.cs.findbugs.annotations.NonNull;

public final class JsonFactoryFactory {
  @NonNull
  private static final JsonFactory SINGLETON = newJsonFactoryInstance();

  private JsonFactoryFactory() {
    // disable construction
  }

  /**
   * Create a new {@link JsonFactory}.
   *
   * @return the factory
   */
  @NonNull
  private static JsonFactory newJsonFactoryInstance() {
    JsonFactory retval = new JsonFactory();
    configureJsonFactory(retval);
    return retval;
  }

  /**
   * Get the cached {@link JsonFactory} instance.
   *
   * @return the factory
   */
  @NonNull
  public static JsonFactory instance() {
    return SINGLETON;
  }

  /**
   * Apply a standard configuration to the provided JSON {@code factory}.
   *
   * @param factory
   *          the factory to configure
   */
  public static void configureJsonFactory(@NonNull JsonFactory factory) {
    // avoid automatically closing parsing streams not owned by the reader
    factory.disable(JsonParser.Feature.AUTO_CLOSE_SOURCE);
    // avoid automatically closing generation streams not owned by the reader
    factory.disable(JsonGenerator.Feature.AUTO_CLOSE_TARGET);
  }
}