001/*
002 * Portions of this software was developed by employees of the National Institute
003 * of Standards and Technology (NIST), an agency of the Federal Government and is
004 * being made available as a public service. Pursuant to title 17 United States
005 * Code Section 105, works of NIST employees are not subject to copyright
006 * protection in the United States. This software may be subject to foreign
007 * copyright. Permission in the United States and in foreign countries, to the
008 * extent that NIST may hold copyright, to use, copy, modify, create derivative
009 * works, and distribute this software and its documentation without fee is hereby
010 * granted on a non-exclusive basis, provided that this notice and disclaimer
011 * of warranty appears in all copies.
012 *
013 * THE SOFTWARE IS PROVIDED 'AS IS' WITHOUT ANY WARRANTY OF ANY KIND, EITHER
014 * EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY
015 * THAT THE SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF
016 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND FREEDOM FROM
017 * INFRINGEMENT, AND ANY WARRANTY THAT THE DOCUMENTATION WILL CONFORM TO THE
018 * SOFTWARE, OR ANY WARRANTY THAT THE SOFTWARE WILL BE ERROR FREE.  IN NO EVENT
019 * SHALL NIST BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO, DIRECT,
020 * INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM,
021 * OR IN ANY WAY CONNECTED WITH THIS SOFTWARE, WHETHER OR NOT BASED UPON WARRANTY,
022 * CONTRACT, TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR
023 * PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM, OR AROSE OUT
024 * OF THE RESULTS OF, OR USE OF, THE SOFTWARE OR SERVICES PROVIDED HEREUNDER.
025 */
026
027package gov.nist.secauto.metaschema.core.datatype.adapter;
028
029import com.fasterxml.jackson.core.JsonGenerator;
030import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatTypes;
031
032import gov.nist.secauto.metaschema.core.datatype.AbstractDataTypeAdapter;
033import gov.nist.secauto.metaschema.core.metapath.item.atomic.IIntegerItem;
034
035import java.io.IOException;
036import java.math.BigInteger;
037
038/**
039 * Provides a common base class for integer-based data types.
040 * <p>
041 * An underlying {@link BigInteger} is used to support arbitrary sized integers.
042 *
043 * @param <ITEM_TYPE>
044 *          the Metapath item type supported by the adapter
045 */
046public abstract class AbstractIntegerAdapter<ITEM_TYPE extends IIntegerItem>
047    extends AbstractDataTypeAdapter<BigInteger, ITEM_TYPE> {
048
049  /**
050   * Construct a new integer-based adapter.
051   */
052  protected AbstractIntegerAdapter() {
053    super(BigInteger.class);
054  }
055
056  @Override
057  public JsonFormatTypes getJsonRawType() {
058    return JsonFormatTypes.INTEGER;
059  }
060
061  @Override
062  public BigInteger parse(String value) {
063    return new BigInteger(value);
064  }
065
066  @Override
067  public void writeJsonValue(Object value, JsonGenerator generator) throws IOException {
068    try {
069      generator.writeNumber((BigInteger) value);
070    } catch (ClassCastException ex) {
071      throw new IOException(ex);
072    }
073  }
074
075  @Override
076  public BigInteger copy(Object obj) {
077    // a BigInteger is immutable
078    return (BigInteger) obj;
079  }
080}