Method: static {...}

1: /*
2: * JOPA
3: * Copyright (C) 2024 Czech Technical University in Prague
4: *
5: * This library is free software; you can redistribute it and/or
6: * modify it under the terms of the GNU Lesser General Public
7: * License as published by the Free Software Foundation; either
8: * version 3.0 of the License, or (at your option) any later version.
9: *
10: * This library is distributed in the hope that it will be useful,
11: * but WITHOUT ANY WARRANTY; without even the implied warranty of
12: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13: * Lesser General Public License for more details.
14: *
15: * You should have received a copy of the GNU Lesser General Public
16: * License along with this library.
17: */
18: package cz.cvut.kbss.jopa.oom.converter;
19:
20: import cz.cvut.kbss.ontodriver.model.LangString;
21: import cz.cvut.kbss.ontodriver.model.NamedResource;
22:
23: /**
24: * Converts literal lexical form to Java {@code String}.
25: * <p>
26: * This converter ensures seamless support for lexical forms.
27: */
28: public class ToLexicalFormConverter implements ConverterWrapper<String, Object> {
29:
30: public static final ToLexicalFormConverter INSTANCE = new ToLexicalFormConverter();
31:
32: @Override
33: public boolean supportsAxiomValueType(Class<?> type) {
34: // Anything but a NamedResource (i.e., a literal since anonymous individuals are not supported) can be transformed to lexical form
35: return !NamedResource.class.isAssignableFrom(type);
36: }
37:
38: @Override
39: public Object convertToAxiomValue(String value) {
40: return value;
41: }
42:
43: @Override
44: public String convertToAttribute(Object value) {
45: assert value != null;
46: return value instanceof LangString ? ((LangString) value).getValue() : value.toString();
47: }
48: }