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.metapath.function.library; 028 029import gov.nist.secauto.metaschema.core.metapath.DynamicContext; 030import gov.nist.secauto.metaschema.core.metapath.ISequence; 031import gov.nist.secauto.metaschema.core.metapath.MetapathConstants; 032import gov.nist.secauto.metaschema.core.metapath.function.IArgument; 033import gov.nist.secauto.metaschema.core.metapath.function.IFunction; 034import gov.nist.secauto.metaschema.core.metapath.item.IItem; 035import gov.nist.secauto.metaschema.core.metapath.item.atomic.IAnyUriItem; 036import gov.nist.secauto.metaschema.core.metapath.item.atomic.IStringItem; 037 038import java.net.URI; 039import java.util.List; 040 041import edu.umd.cs.findbugs.annotations.NonNull; 042import edu.umd.cs.findbugs.annotations.Nullable; 043 044public final class FnStaticBaseUri { 045 @NonNull 046 static final IFunction SIGNATURE = IFunction.builder() 047 .name("static-base-uri") 048 .namespace(MetapathConstants.NS_XPATH_FUNCTIONS) 049 .argument(IArgument.newBuilder() 050 .name("arg1") 051 .type(IStringItem.class) 052 .zeroOrOne() 053 .build()) 054 .returnType(IAnyUriItem.class) 055 .returnOne() 056 .functionHandler(FnStaticBaseUri::execute) 057 .build(); 058 059 @SuppressWarnings("unused") 060 @NonNull 061 private static ISequence<IAnyUriItem> execute(@NonNull IFunction function, 062 @NonNull List<ISequence<?>> arguments, 063 @NonNull DynamicContext dynamicContext, 064 IItem focus) { 065 066 IAnyUriItem uri = fnStaticBaseUri(dynamicContext); 067 return ISequence.of(uri); 068 } 069 070 private FnStaticBaseUri() { 071 // disable construction 072 } 073 074 /** 075 * Get the static base URI from the static context. 076 * 077 * @param context 078 * the dynamic context 079 * @return the base URI or {@code null} if none was set 080 */ 081 @Nullable 082 public static IAnyUriItem fnStaticBaseUri(@NonNull DynamicContext context) { 083 URI staticBaseUri = context.getStaticContext().getBaseUri(); 084 085 return staticBaseUri == null ? null : IAnyUriItem.valueOf(staticBaseUri); 086 } 087}