VersionScheme.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.swid.builder;
import java.util.HashMap;
import java.util.Map;
public interface VersionScheme {
Integer getIndex();
String getName();
static final Map<String, VersionScheme> byValueMap = new HashMap<>();
static final Map<Integer, VersionScheme> byIndexMap = new HashMap<>();
/**
* Initialize the mapping of version scheme index and text values.
*
* @param index
* the index position
* @param value
* the human-readable value
*/
default void init(Integer index, String value) {
if (index != null) {
synchronized (byIndexMap) {
byIndexMap.put(index, this);
}
}
synchronized (byValueMap) {
byValueMap.put(value, this);
}
}
public static VersionScheme assignPrivateVersionScheme(int indexValue, String name) {
// force initialization of the known roles
KnownVersionScheme.values();
VersionScheme retval = null;
synchronized (byValueMap) {
@SuppressWarnings("unlikely-arg-type")
VersionScheme value = byValueMap.get(indexValue);
retval = value;
}
if (retval == null) {
retval = new UnknownVersionScheme(indexValue, name);
} else if (retval.getName().equals(name)) {
// return the current role
} else {
throw new IllegalStateException("the version scheme with the name '" + retval.getName()
+ "' is already assigned to the index value '" + indexValue + "'");
}
return retval;
}
/**
* Lookup a version scheme by an index value.F
*
* @param value
* the index value to search for
* @return the matching role or {@code null} if no matching role was not found.
*/
public static VersionScheme lookupByIndex(int value) {
// force initialization of the known roles
KnownVersionScheme.values();
VersionScheme retval = null;
synchronized (byIndexMap) {
retval = byIndexMap.get(value);
}
return retval;
}
/**
* Lookup a version scheme by a human-readable name.
*
* @param name
* the name to lookup
* @return the matching version scheme or {@code null} if no matching version scheme was not found.
*/
public static VersionScheme lookupByName(String name) {
// force initialization of the known roles
KnownVersionScheme.values();
VersionScheme retval = null;
synchronized (byValueMap) {
retval = byValueMap.get(name);
}
if (retval == null) {
retval = new UnknownVersionScheme(name);
}
return retval;
}
}