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org.ldp4j.application.data.Literals Maven / Gradle / Ivy
/**
* #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
* This file is part of the LDP4j Project:
* http://www.ldp4j.org/
*
* Center for Open Middleware
* http://www.centeropenmiddleware.com/
* #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
* Copyright (C) 2014-2016 Center for Open Middleware.
* #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
* 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.
* #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
* Artifact : org.ldp4j.framework:ldp4j-application-api:0.2.1
* Bundle : ldp4j-application-api-0.2.1.jar
* #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
*/
package org.ldp4j.application.data;
import static com.google.common.base.Preconditions.checkNotNull;
import java.io.Serializable;
import java.net.URI;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Locale;
import java.util.Map.Entry;
import java.util.TimeZone;
import java.util.concurrent.TimeUnit;
import javax.xml.datatype.XMLGregorianCalendar;
import org.joda.time.DateTime;
import org.joda.time.Duration;
import org.joda.time.Period;
import org.joda.time.chrono.ISOChronology;
import org.joda.time.format.ISOPeriodFormat;
import com.google.common.collect.ImmutableMap;
public final class Literals {
public abstract static class DateTimeLiteralBuilder {
private DateTimeLiteralBuilder() {
}
public final DateTimeLiteral dateTime() {
return new ImmutableDateTimeLiteral(getDateTime(),Datatypes.DATE_TIME);
}
public final DateTimeLiteral date() {
return new ImmutableDateTimeLiteral(getDateTime(),Datatypes.DATE);
}
public final DateTimeLiteral time() {
return new ImmutableDateTimeLiteral(getDateTime(),Datatypes.TIME);
}
public final DateTimeLiteral year() {
return new ImmutableDateTimeLiteral(getDateTime(),Datatypes.GYEAR);
}
public final DateTimeLiteral month() {
return new ImmutableDateTimeLiteral(getDateTime(),Datatypes.GMONTH);
}
public final DateTimeLiteral day() {
return new ImmutableDateTimeLiteral(getDateTime(),Datatypes.GDAY);
}
public final DateTimeLiteral yearAndMonth() {
return new ImmutableDateTimeLiteral(getDateTime(),Datatypes.GYEARMONTH);
}
public final DateTimeLiteral monthAndDay() {
return new ImmutableDateTimeLiteral(getDateTime(),Datatypes.GMONTHDAY);
}
protected abstract DateTime getDateTime();
}
public static final class DateTimeDateTimeLiteralBuilder extends DateTimeLiteralBuilder {
private final DateTime dateTime;
private DateTimeDateTimeLiteralBuilder(DateTime dateTime) {
super();
this.dateTime = dateTime;
}
@Override
protected DateTime getDateTime() {
return dateTime;
}
}
public static final class XMLGregorianCalendarDateTimeLiteralBuilder extends DateTimeLiteralBuilder {
private final XMLGregorianCalendar calendar;
private TimeZone timezone;
private Locale locale;
private XMLGregorianCalendar defaults;
private XMLGregorianCalendarDateTimeLiteralBuilder(XMLGregorianCalendar calendar) {
super();
this.calendar = calendar;
}
public XMLGregorianCalendarDateTimeLiteralBuilder withTimeZone(TimeZone timezone) {
this.timezone = timezone;
return this;
}
public XMLGregorianCalendarDateTimeLiteralBuilder withLocale(Locale locale) {
this.locale = locale;
return this;
}
public XMLGregorianCalendarDateTimeLiteralBuilder withDefaults(XMLGregorianCalendar defaults) {
this.defaults = defaults;
return this;
}
@Override
protected DateTime getDateTime() {
return normalizeChronology(new DateTime(this.calendar.toGregorianCalendar(this.timezone, this.locale, this.defaults)));
}
}
private interface DateTimeLiteralBuilderFactory {
DateTimeLiteralBuilder createBuilder(Object value, URI datatype);
}
private interface DateTimeLiteralBuilderAdapter {
DateTimeLiteral adapt(DateTimeLiteralBuilder builder);
}
private static final ImmutableMap,DateTimeLiteralBuilderFactory> FACTORIES=
ImmutableMap.
,DateTimeLiteralBuilderFactory>builder().
put(
Date.class,
new DateTimeLiteralBuilderFactory() {
@Override
public DateTimeLiteralBuilder createBuilder(Object value, URI datatype) {
return of((Date)value);
}
}
).
put(
GregorianCalendar.class,
new DateTimeLiteralBuilderFactory() {
@Override
public DateTimeLiteralBuilder createBuilder(Object value, URI datatype) {
return of((GregorianCalendar)value);
}
}
).
put(
Calendar.class,
new DateTimeLiteralBuilderFactory() {
@Override
public DateTimeLiteralBuilder createBuilder(Object value, URI datatype) {
return of((Calendar)value);
}
}
).
put(
DateTime.class,
new DateTimeLiteralBuilderFactory() {
@Override
public DateTimeLiteralBuilder createBuilder(Object value, URI datatype) {
return of((DateTime)value);
}
}
).
put(
XMLGregorianCalendar.class,
new DateTimeLiteralBuilderFactory() {
@Override
public DateTimeLiteralBuilder createBuilder(Object value, URI datatype) {
return of((XMLGregorianCalendar)value);
}
}
).
put(
String.class,
new DateTimeLiteralBuilderFactory() {
@Override
public DateTimeLiteralBuilder createBuilder(Object value, URI datatype) {
try {
return of(new DateTime(value));
} catch (Exception e) {
throw new DatatypeCohercionException(value,datatype,e);
}
}
}
).
build();
private static final ImmutableMap ADAPTERS=
ImmutableMap.
builder().
put(
Datatypes.DATE_TIME,
new DateTimeLiteralBuilderAdapter() {
@Override
public DateTimeLiteral adapt(DateTimeLiteralBuilder builder) {
return builder.dateTime();
}
}
).
put(
Datatypes.DATE,
new DateTimeLiteralBuilderAdapter() {
@Override
public DateTimeLiteral adapt(DateTimeLiteralBuilder builder) {
return builder.date();
}
}
).
put(
Datatypes.TIME,
new DateTimeLiteralBuilderAdapter() {
@Override
public DateTimeLiteral adapt(DateTimeLiteralBuilder builder) {
return builder.time();
}
}
).
put(
Datatypes.GYEAR,
new DateTimeLiteralBuilderAdapter() {
@Override
public DateTimeLiteral adapt(DateTimeLiteralBuilder builder) {
return builder.year();
}
}
).
put(
Datatypes.GMONTH,
new DateTimeLiteralBuilderAdapter() {
@Override
public DateTimeLiteral adapt(DateTimeLiteralBuilder builder) {
return builder.month();
}
}
).
put(
Datatypes.GDAY,
new DateTimeLiteralBuilderAdapter() {
@Override
public DateTimeLiteral adapt(DateTimeLiteralBuilder builder) {
return builder.day();
}
}
).
put(
Datatypes.GYEARMONTH,
new DateTimeLiteralBuilderAdapter() {
@Override
public DateTimeLiteral adapt(DateTimeLiteralBuilder builder) {
return builder.yearAndMonth();
}
}
).
put(
Datatypes.GMONTHDAY,
new DateTimeLiteralBuilderAdapter() {
@Override
public DateTimeLiteral adapt(DateTimeLiteralBuilder builder) {
return builder.monthAndDay();
}
}
).
build();
private static final String DATATYPE_CANNOT_BE_NULL = "Datatype cannot be null";
private static final String LANGUAGE_CANNOT_BE_NULL = "Language cannot be null";
private static final String STRING_CANNOT_BE_NULL = "String cannot be null";
private static final String TIME_UNIT_CANNOT_BE_NULL = "Time unit cannot be null";
private static final String DATE_TIME_CANNOT_BE_NULL = "Date-time cannot be null";
private static final String LITERAL_VALUE_CANNOT_BE_NULL = "Literal value cannot be null";
private static final String CALENDAR_CANNOT_BE_NULL = "Calendar cannot be null";
private static final String TIME_CANNOT_BE_NULL = "Time cannot be null";
private static final String DATE_CANNOT_BE_NULL = "Date cannot be null";
private static final String DURATION_CANNOT_BE_NULL = "Duration cannot be null";
private static final Class[] DATE_TIME_CLASSES={
java.sql.Date.class,
Date.class,
java.sql.Time.class,
DateTime.class,
GregorianCalendar.class,
Calendar.class,
XMLGregorianCalendar.class
};
private static final Class[] DURATION_CLASSES={
Duration.class,
javax.xml.datatype.Duration.class
};
private Literals() {
}
private static boolean isDateTime(Object obj) {
return isInstanceOf(obj,Literals.DATE_TIME_CLASSES);
}
private static boolean isDuration(Object obj) {
return isInstanceOf(obj,Literals.DURATION_CLASSES);
}
private static boolean isInstanceOf(Object obj, Class[] classes) {
for(Class clazz:classes) {
if(clazz.isInstance(obj)) {
return true;
}
}
return false;
}
private static DateTime normalizeChronology(DateTime dateTime) {
return dateTime.withChronology(ISOChronology.getInstance());
}
private static DurationLiteral coherceDuration(T value) {
DurationLiteral duration=null;
if(value instanceof Duration) {
duration=of((Duration)value);
} else if(value instanceof javax.xml.datatype.Duration) {
duration=of((javax.xml.datatype.Duration)value);
} else if(value instanceof String) {
try {
Period period = ISOPeriodFormat.standard().parsePeriod((String)value);
duration=of(period.toStandardDuration());
} catch (Exception e) {
throw new DatatypeCohercionException(value,Datatypes.DURATION,e);
}
} else {
throw new DatatypeCohercionException(value,Datatypes.DURATION);
}
return duration;
}
private static DateTimeLiteral coherceDateTime(Object value, URI datatype) throws AssertionError {
DateTimeLiteral dateTime=null;
if(value instanceof java.sql.Date) {
dateTime=of((java.sql.Date)value);
} else if(value instanceof java.sql.Time) {
dateTime=of((java.sql.Time)value);
} else {
dateTime=coherceVariableDateTime(value,datatype);
}
return dateTime;
}
private static DateTimeLiteral coherceVariableDateTime(Object value, URI datatype) {
return Literals.ADAPTERS.get(datatype).adapt(getBuilder(value,datatype));
}
private static DateTimeLiteralBuilder getBuilder(Object value, URI datatype) {
for(Entry,DateTimeLiteralBuilderFactory> entry:Literals.FACTORIES.entrySet()) {
if(entry.getKey().isInstance(value)) {
return entry.getValue().createBuilder(value, datatype);
}
}
throw new DatatypeCohercionException(value,datatype);
}
public static Literal of(String value) {
checkNotNull(value,STRING_CANNOT_BE_NULL);
return new ImmutableLiteral(value);
}
public static DurationLiteral of(javax.xml.datatype.Duration duration) {
checkNotNull(duration,DURATION_CANNOT_BE_NULL);
Period period = ISOPeriodFormat.standard().parsePeriod(duration.toString());
return new ImmutableDurationLiteral(period.toStandardDuration(),Datatypes.DURATION);
}
public static DurationLiteral of(Duration duration) {
checkNotNull(duration,DURATION_CANNOT_BE_NULL);
return new ImmutableDurationLiteral(duration,Datatypes.DURATION);
}
public static DateTimeDateTimeLiteralBuilder of(Date date) {
checkNotNull(date,DATE_CANNOT_BE_NULL);
return new DateTimeDateTimeLiteralBuilder(new DateTime(date));
}
public static DateTimeLiteral of(java.sql.Date date) {
checkNotNull(date,DATE_CANNOT_BE_NULL);
return new ImmutableDateTimeLiteral(new DateTime(date), Datatypes.DATE);
}
public static DateTimeLiteral of(java.sql.Time time) {
checkNotNull(time,TIME_CANNOT_BE_NULL);
return new ImmutableDateTimeLiteral(new DateTime(time.getTime()), Datatypes.TIME);
}
public static DateTimeDateTimeLiteralBuilder of(Calendar calendar) {
checkNotNull(calendar,CALENDAR_CANNOT_BE_NULL);
return new DateTimeDateTimeLiteralBuilder(normalizeChronology(new DateTime(calendar)));
}
public static DateTimeDateTimeLiteralBuilder of(GregorianCalendar calendar) {
checkNotNull(calendar,CALENDAR_CANNOT_BE_NULL);
return new DateTimeDateTimeLiteralBuilder(normalizeChronology(new DateTime(calendar)));
}
public static XMLGregorianCalendarDateTimeLiteralBuilder of(XMLGregorianCalendar calendar) {
checkNotNull(calendar,CALENDAR_CANNOT_BE_NULL);
return new XMLGregorianCalendarDateTimeLiteralBuilder(calendar);
}
public static DateTimeDateTimeLiteralBuilder of(DateTime dateTime) {
checkNotNull(dateTime,DATE_TIME_CANNOT_BE_NULL);
return new DateTimeDateTimeLiteralBuilder(dateTime);
}
public static DurationLiteral duration(long time, TimeUnit unit) {
checkNotNull(time,TIME_CANNOT_BE_NULL);
checkNotNull(unit,TIME_UNIT_CANNOT_BE_NULL);
return of(new Duration(TimeUnit.MILLISECONDS.convert(time, unit)));
}
public static Literal newLiteral(Object value) {
checkNotNull(value,LITERAL_VALUE_CANNOT_BE_NULL);
Literal result=null;
if(isDuration(value)) {
result=coherceDuration(value);
} else if(isDateTime(value)) {
result=coherceDateTime(value,Datatypes.DATE_TIME);
} else if(value instanceof Serializable) {
result=new ImmutableLiteral((Serializable)value);
} else {
result=new ImmutableTypedLiteral(value.toString(),Datatypes.STRING);
}
return result;
}
public static TypedLiteral newTypedLiteral(Object value, URI datatype) {
checkNotNull(value,LITERAL_VALUE_CANNOT_BE_NULL);
checkNotNull(datatype,DATATYPE_CANNOT_BE_NULL);
TypedLiteral result=null;
if(Datatypes.isDuration(datatype)) {
result=coherceDuration(value);
} else if(Datatypes.isTemporal(datatype)) {
result=coherceDateTime(value, datatype);
} else if(value instanceof Serializable){
result=new ImmutableTypedLiteral((Serializable)value,datatype);
} else {
result=new ImmutableTypedLiteral(value.toString(),Datatypes.STRING);
}
return result;
}
public static LanguageLiteral newLanguageLiteral(String value, String language) {
checkNotNull(value,STRING_CANNOT_BE_NULL);
checkNotNull(language,LANGUAGE_CANNOT_BE_NULL);
return new ImmutableLanguageLiteral(value,language);
}
}
