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/* This file is part of the OWL API.
* The contents of this file are subject to the LGPL License, Version 3.0.
* Copyright 2014, The University of Manchester
*
* This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.
*
* Alternatively, the contents of this file may be used under the terms of the Apache License, Version 2.0 in which case, the provisions of the Apache License Version 2.0 are applicable instead of those above.
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */
package uk.ac.manchester.cs.owl.owlapi;
import static org.semanticweb.owlapi.vocab.OWL2Datatype.*;
import java.io.Serializable;
import java.util.Locale;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import org.semanticweb.owlapi.model.IRI;
import org.semanticweb.owlapi.model.OWLAnnotationProperty;
import org.semanticweb.owlapi.model.OWLClass;
import org.semanticweb.owlapi.model.OWLDataProperty;
import org.semanticweb.owlapi.model.OWLDatatype;
import org.semanticweb.owlapi.model.OWLLiteral;
import org.semanticweb.owlapi.model.OWLNamedIndividual;
import org.semanticweb.owlapi.model.OWLObjectProperty;
import org.semanticweb.owlapi.vocab.XSDVocabulary;
/** no cache used @author ignazio */
public class InternalsNoCache implements OWLDataFactoryInternals, Serializable {
private static final long serialVersionUID = 40000L;
@Nonnull
private static final OWLDatatype PLAIN = new OWL2DatatypeImpl(
RDF_PLAIN_LITERAL);
@Nonnull
private static final OWLDatatype XSDBOOLEAN = new OWL2DatatypeImpl(
XSD_BOOLEAN);
@Nonnull
private static final OWLDatatype XSDDOUBLE = new OWL2DatatypeImpl(
XSD_DOUBLE);
@Nonnull
private static final OWLDatatype XSDFLOAT = new OWL2DatatypeImpl(XSD_FLOAT);
@Nonnull
private static final OWLDatatype XSDINTEGER = new OWL2DatatypeImpl(
XSD_INTEGER);
@Nonnull
private static final OWLDatatype RDFSLITERAL = new OWL2DatatypeImpl(
RDFS_LITERAL);
@Nonnull
private static final OWLLiteral TRUELITERAL = new OWLLiteralImplBoolean(
true, XSDBOOLEAN);
@Nonnull
private static final OWLLiteral FALSELITERAL = new OWLLiteralImplBoolean(
false, XSDBOOLEAN);
@Nullable
private OWLLiteral negativeFloatZero;
private final boolean useCompression;
/**
* @param useCompression
* true if compression of literals should be used
*/
public InternalsNoCache(boolean useCompression) {
this.useCompression = useCompression;
}
@Override
public void purge() {}
@Override
public OWLClass getOWLClass(IRI iri) {
return new OWLClassImpl(iri);
}
@Override
public OWLObjectProperty getOWLObjectProperty(IRI iri) {
return new OWLObjectPropertyImpl(iri);
}
@Override
public OWLDataProperty getOWLDataProperty(IRI iri) {
return new OWLDataPropertyImpl(iri);
}
@Override
public OWLNamedIndividual getOWLNamedIndividual(IRI iri) {
return new OWLNamedIndividualImpl(iri);
}
@Override
public OWLDatatype getOWLDatatype(IRI iri) {
return new OWLDatatypeImpl(iri);
}
@Override
public OWLAnnotationProperty getOWLAnnotationProperty(IRI iri) {
return new OWLAnnotationPropertyImpl(iri);
}
@Override
public OWLLiteral getOWLLiteral(float value) {
return new OWLLiteralImplFloat(value, getFloatOWLDatatype());
}
@Override
public OWLLiteral getOWLLiteral(@Nonnull String value) {
if (useCompression) {
return new OWLLiteralImpl(value, "",
getOWLDatatype(XSDVocabulary.STRING.getIRI()));
}
return new OWLLiteralImplString(value);
}
@Override
public OWLLiteral getOWLLiteral(String literal, @Nullable String lang) {
String normalisedLang;
if (lang == null) {
normalisedLang = "";
} else {
normalisedLang = lang.trim().toLowerCase(Locale.ENGLISH);
}
if (useCompression) {
return new OWLLiteralImpl(literal, normalisedLang, null);
}
return new OWLLiteralImplPlain(literal, normalisedLang);
}
@Override
public OWLLiteral getOWLLiteral(int value) {
return new OWLLiteralImplInteger(value, getIntegerOWLDatatype());
}
@Override
public OWLLiteral getOWLLiteral(boolean value) {
return value ? TRUELITERAL : FALSELITERAL;
}
@Override
public OWLLiteral getOWLLiteral(double value) {
return new OWLLiteralImplDouble(value, getDoubleOWLDatatype());
}
@SuppressWarnings("null")
@Override
public OWLLiteral getOWLLiteral(@Nonnull String lexicalValue,
@Nonnull OWLDatatype datatype) {
OWLLiteral literal;
if (datatype.isRDFPlainLiteral()) {
int sep = lexicalValue.lastIndexOf('@');
if (sep != -1) {
String lex = lexicalValue.substring(0, sep);
String lang = lexicalValue.substring(sep + 1);
literal = getBasicLiteral(lex, lang, getRDFPlainLiteral());
} else {
literal = getBasicLiteral(lexicalValue, datatype);
}
} else {
// check the special cases
try {
if (datatype.isString()) {
literal = getOWLLiteral(lexicalValue);
} else if (datatype.isBoolean()) {
literal = getOWLLiteral(isBooleanTrueValue(lexicalValue
.trim()));
} else if (datatype.isFloat()) {
if (lexicalValue.trim().equals("-0.0")) {
// according to some W3C test, this needs to be
// different from 0.0; Java floats disagree
if (negativeFloatZero == null) {
negativeFloatZero = getBasicLiteral("-0.0",
XSDFLOAT);
}
literal = negativeFloatZero;
} else {
try {
float f = Float.parseFloat(lexicalValue);
literal = getOWLLiteral(f);
} catch (NumberFormatException e) {
literal = getBasicLiteral(lexicalValue, datatype);
}
}
} else if (datatype.isDouble()) {
literal = getOWLLiteral(Double.parseDouble(lexicalValue));
} else if (datatype.isInteger()) {
// again, some W3C tests require padding zeroes to make
// literals different
if (lexicalValue.trim().charAt(0) == '0') {
literal = getBasicLiteral(lexicalValue,
getIntegerOWLDatatype());
} else {
try {
// this is fine for values that can be parsed as
// ints - not all values are
literal = getOWLLiteral(Integer
.parseInt(lexicalValue));
} catch (NumberFormatException ex) {
// try as a big decimal
literal = getBasicLiteral(lexicalValue, datatype);
}
}
} else {
literal = getBasicLiteral(lexicalValue, datatype);
}
} catch (NumberFormatException e) {
// some literal is malformed, i.e., wrong format
literal = getBasicLiteral(lexicalValue, datatype);
}
}
return literal;
}
@Nonnull
protected OWLLiteral getBasicLiteral(@Nonnull String lexicalValue,
OWLDatatype datatype) {
return getBasicLiteral(lexicalValue, "", datatype);
}
@Nonnull
protected OWLLiteral getBasicLiteral(@Nonnull String lexicalValue,
String lang, OWLDatatype datatype) {
OWLLiteral literal = null;
if (useCompression) {
if (datatype == null || datatype.isRDFPlainLiteral()) {
literal = new OWLLiteralImplPlain(lexicalValue, lang);
} else {
literal = new OWLLiteralImpl(lexicalValue, lang, datatype);
}
} else {
literal = new OWLLiteralImplNoCompression(lexicalValue, lang,
datatype);
}
return literal;
}
private static boolean isBooleanTrueValue(@Nonnull String lexicalValue) {
return lexicalValue.equals("1") || lexicalValue.equals("true");
}
@Override
public OWLDatatype getTopDatatype() {
return RDFSLITERAL;
}
@Override
public OWLDatatype getIntegerOWLDatatype() {
return XSDINTEGER;
}
@Override
public OWLDatatype getFloatOWLDatatype() {
return XSDFLOAT;
}
@Override
public OWLDatatype getDoubleOWLDatatype() {
return XSDDOUBLE;
}
@Override
public OWLDatatype getBooleanOWLDatatype() {
return XSDBOOLEAN;
}
@Override
public OWLDatatype getRDFPlainLiteral() {
return PLAIN;
}
}
