/** * Copyright (c) 2014, University of Warsaw * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, are permitted * provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this list of * conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, this list of * conditions and the following disclaimer in the documentation and/or other materials provided * with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package pl.edu.mimuw.cloudatlas.model; import java.lang.IllegalArgumentException; import java.text.ParseException; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * A class representing duration in milliseconds. The duration can be negative. This is a simple wrapper of a Java * Long object. */ public class ValueDuration extends ValueSimple { public static class InvalidFormatException extends IllegalArgumentException { } /** * Regex pattern for duration strings. */ private static final Pattern DURATION_PATTERN = Pattern.compile( "(?[+-])(?\\d+) " + "(?[0-1][0-9]|2[0-3]):(?[0-5][0-9]):(?[0-5][0-9])." + "(?[0-9]{3})" ); /** * Constructs a new ValueDuration object wrapping the specified value. * * @param value the value to wrap */ public ValueDuration(Long value) { super(value); } /* Kryo needs a no-args constructor */ private ValueDuration() { } @Override public Type getType() { return TypePrimitive.DURATION; } @Override public Value getDefaultValue() { return new ValueDuration(0l); } /** * Constructs a new ValueDuration object from the specified amounts of different time units. * * @param seconds a number of full seconds * @param milliseconds a number of milliseconds (an absolute value does not have to be lower than 1000) */ public ValueDuration(long seconds, long milliseconds) { this(seconds * 1000l + milliseconds); } /** * Constructs a new ValueDuration object from the specified amounts of different time units. * * @param minutes a number of full minutes * @param seconds a number of full seconds (an absolute value does not have to be lower than 60) * @param milliseconds a number of milliseconds (an absolute value does not have to be lower than 1000) */ public ValueDuration(long minutes, long seconds, long milliseconds) { this(minutes * 60l + seconds, milliseconds); } /** * Constructs a new ValueDuration object from the specified amounts of different time units. * * @param hours a number of full hours * @param minutes a number of full minutes (an absolute value does not have to be lower than 60) * @param seconds a number of full seconds (an absolute value does not have to be lower than 60) * @param milliseconds a number of milliseconds (an absolute value does not have to be lower than 1000) */ public ValueDuration(long hours, long minutes, long seconds, long milliseconds) { this(hours * 60l + minutes, seconds, milliseconds); } /** * Constructs a new ValueDuration object from the specified amounts of different time units. * * @param days a number of full days * @param hours a number of full hours (an absolute value does not have to be lower than 24) * @param minutes a number of full minutes (an absolute value does not have to be lower than 60) * @param seconds a number of full seconds (an absolute value does not have to be lower than 60) * @param milliseconds a number of milliseconds (an absolute value does not have to be lower than 1000) */ public ValueDuration(long days, long hours, long minutes, long seconds, long milliseconds) { this(days * 24l + hours, minutes, seconds, milliseconds); } /** * Constructs a new ValueDuration object from its textual representation. The representation has * format: sd hh:mm:ss.lll where: *
    *
  • s is a sign (+ or -),
  • *
  • d is a number of days,
  • *
  • hh is a number of hours (between 00 and 23),
  • *
  • mm is a number of minutes (between 00 and 59),
  • *
  • ss is a number of seconds (between 00 and 59),
  • *
  • lll is a number of milliseconds (between 000 and 999).
  • *
*

* All fields are obligatory. * * @param value a textual representation of a duration * @throws IllegalArgumentException if value does not meet described rules */ public ValueDuration(String value) { this(parseDuration(value)); } private static long parseDuration(String value) { Matcher matcher = DURATION_PATTERN.matcher(value); if (!matcher.matches()) { throw new InvalidFormatException(); } long result = parseLongGroup(matcher, "days"); result *= 24; result += parseLongGroup(matcher, "hours"); result *= 60; result += parseLongGroup(matcher, "minutes"); result *= 60; result += parseLongGroup(matcher, "seconds"); result *= 1000; result += parseLongGroup(matcher, "milliseconds"); result *= matcher.group("sign").equals("+") ? 1 : -1; return result; } /** * @param matcher A regex matcher * @param group The name of a group matched by matcher that * should have captured a number. * @return The parsed number. */ private static long parseLongGroup(Matcher matcher, String group) { return Long.parseLong(matcher.group(group)); } @Override public ValueBoolean isLowerThan(Value value) { sameTypesOrThrow(value, Operation.COMPARE); if(isNull() || value.isNull()) return new ValueBoolean(null); return new ValueBoolean(getValue() < ((ValueDuration)value).getValue()); } @Override public ValueDuration addValue(Value value) { sameTypesOrThrow(value, Operation.ADD); if (isNull() || value.isNull()) { return new ValueDuration((Long) null); } return new ValueDuration(getValue() + ((ValueDuration)value).getValue()); } @Override public ValueDuration subtract(Value value) { sameTypesOrThrow(value, Operation.SUBTRACT); if (isNull() || value.isNull()) return new ValueDuration((Long) null); return new ValueDuration(getValue() - ((ValueDuration)value).getValue()); } @Override public ValueDuration multiply(Value value) { if (!value.getType().isCompatible(TypePrimitive.INTEGER)) { throw new IncompatibleTypesException(getType(), value.getType(), Operation.MULTIPLY); } if (isNull() || value.isNull()) { return new ValueDuration((Long) null); } return new ValueDuration(getValue() * ((ValueInt)value).getValue()); } @Override public Value divide(Value value) { if (!value.getType().isCompatible(TypePrimitive.INTEGER)) { throw new IncompatibleTypesException(getType(), value.getType(), Operation.MULTIPLY); } if (isNull() || value.isNull()) { return new ValueDuration((Long) null); } if (((ValueInt)value).getValue() == 0l) { throw new ArithmeticException("Division by zero."); } return new ValueDuration(getValue() / ((ValueInt)value).getValue()); } @Override public ValueDuration modulo(Value value) { if (!value.getType().isCompatible(TypePrimitive.INTEGER)) { throw new IncompatibleTypesException(getType(), value.getType(), Operation.MULTIPLY); } if (isNull() || value.isNull()) { return new ValueDuration((Long) null); } if (((ValueInt)value).getValue() == 0l) { throw new ArithmeticException("Division by zero."); } return new ValueDuration(getValue() % ((ValueInt)value).getValue()); } @Override public ValueDuration negate() { if(isNull()) { return new ValueDuration((Long) null); } return new ValueDuration(-getValue()); } private String makeString() { long remainingUnits = getValue(); boolean positive = remainingUnits >= 0; remainingUnits = positive ? remainingUnits : -remainingUnits; long milliseconds = remainingUnits % 1000; remainingUnits /= 1000; long seconds = remainingUnits % 60; remainingUnits /= 60; long minutes = remainingUnits % 60; remainingUnits /= 60; long hours = remainingUnits % 24; remainingUnits /= 24; long days = remainingUnits; return (positive ? "+" : "-") + Long.toString(days) + " " + Long.toString(hours) + ":" + Long.toString(minutes) + ":" + Long.toString(seconds) + "." + Long.toString(milliseconds); } @Override public Value convertTo(Type type) { switch(type.getPrimaryType()) { case STRING: return getValue() == null? ValueString.NULL_STRING : new ValueString(makeString()); case DURATION: return this; default: throw new UnsupportedConversionException(getType(), type); } } }