Intial commit - import scenario 2

1 files changed, 117 insertions, 0 deletions

diff --git a/src/pl/edu/mimuw/cloudatlas/model/ValueTime.java b/src/pl/edu/mimuw/cloudatlas/model/ValueTime.java
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+/**
+ * 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.text.DateFormat;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+
+import pl.edu.mimuw.cloudatlas.model.Value;
+import pl.edu.mimuw.cloudatlas.model.ValueTime;
+
+/**
+ * A class representing the POSIX time in milliseconds. This is a simple wrapper of a Java <code>Long</code> object.
+ */
+public class ValueTime extends ValueSimple<Long> {
+	/**
+	 * A format of string representing <code>ValueTime</code> when constructing from or converting to a
+	 * <code>String</code> object.
+	 */
+	public static final DateFormat TIME_FORMAT = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss.SSS");
+	
+	/**
+	 * Constructs a new <code>ValueTime</code> object wrapping the specified value.
+	 * 
+	 * @param value the POSIX time
+	 */
+	public ValueTime(Long value) {
+		super(value);
+	}
+	
+	@Override
+	public Type getType() {
+		return TypePrimitive.TIME;
+	}
+	
+	@Override
+	public Value getDefaultValue() {
+		return new ValueTime(0l);
+	}
+	
+	/**
+	 * Constructs a new <code>ValueTime</code> object from its textual representation.
+	 * 
+	 * @param time a time formatted according to {@link #TIME_FORMAT}
+	 * @throws ParseException if the <code>time</code> is incorrect
+	 * @see #TIME_FORMAT
+	 */
+	public ValueTime(String time) throws ParseException {
+		this(TIME_FORMAT.parse(time).getTime());
+	}
+	
+	@Override
+	public ValueBoolean isLowerThan(Value value) {
+		sameTypesOrThrow(value, Operation.COMPARE);
+		if(isNull() || value.isNull())
+			return new ValueBoolean(null);
+		return new ValueBoolean(getValue() < ((ValueTime)value).getValue());
+	}
+	
+	@Override
+	public ValueTime addValue(Value value) {
+		if(!value.getType().isCompatible(TypePrimitive.DURATION))
+			throw new IncompatibleTypesException(getType(), value.getType(), Operation.ADD);
+		if(isNull() || value.isNull())
+			return new ValueTime((Long)null);
+		return new ValueTime(getValue() + ((ValueDuration)value).getValue());
+	}
+	
+	@Override
+	public Value subtract(Value value) {
+		if(value.getType().isCompatible(TypePrimitive.DURATION)) {
+			if(isNull() || value.isNull())
+				return new ValueTime((Long)null);
+			return new ValueTime(getValue() - ((ValueDuration)value).getValue());
+		} else if(value.getType().isCompatible(TypePrimitive.TIME)) {
+			if(isNull() || value.isNull())
+				return new ValueTime((Long)null);
+			return new ValueDuration(getValue() - ((ValueTime)value).getValue());
+		}
+		throw new IncompatibleTypesException(getType(), value.getType(), Operation.SUBTRACT);
+		
+	}
+	
+	@Override
+	public Value convertTo(Type type) {
+		switch(type.getPrimaryType()) {
+			case STRING:
+				return getValue() == null? ValueString.NULL_STRING : new ValueString(TIME_FORMAT.format(getValue()));
+			case TIME:
+				return this;
+			default:
+				throw new UnsupportedConversionException(getType(), type);
+		}
+	}
+}