Intial commit - import scenario 2

1 files changed, 120 insertions, 0 deletions

diff --git a/src/pl/edu/mimuw/cloudatlas/model/ValueString.java b/src/pl/edu/mimuw/cloudatlas/model/ValueString.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.ParseException;
+
+import pl.edu.mimuw.cloudatlas.model.Value;
+import pl.edu.mimuw.cloudatlas.model.ValueString;
+
+/**
+ * A class that wraps a Java <code>String</code> object.
+ */
+public class ValueString extends ValueSimple<String> {
+	/**
+	 * A result of conversion values representing null to <code>ValueString</code>.
+	 */
+	protected static final ValueString NULL_STRING = new ValueString("NULL");
+	
+	/**
+	 * Constructs a new <code>ValueString</code> object wrapping the specified <code>value</code>.
+	 * 
+	 * @param value the value to wrap
+	 */
+	public ValueString(String value) {
+		super(value);
+	}
+	
+	@Override
+	public Type getType() {
+		return TypePrimitive.STRING;
+	}
+	
+	@Override
+	public Value getDefaultValue() {
+		return new ValueString("");
+	}
+	
+	@Override
+	public ValueBoolean isLowerThan(Value value) {
+		sameTypesOrThrow(value, Operation.COMPARE);
+		if(isNull() || value.isNull())
+			return new ValueBoolean(null);
+		return new ValueBoolean(getValue().compareTo(((ValueString)value).getValue()) < 0);
+	}
+	
+	@Override
+	public ValueString addValue(Value value) {
+		sameTypesOrThrow(value, Operation.ADD);
+		if(isNull() || value.isNull())
+			return new ValueString(null);
+		return new ValueString(getValue().concat(((ValueString)value).getValue()));
+	}
+	
+	@Override
+	public ValueBoolean regExpr(Value value) {
+		sameTypesOrThrow(value, Operation.REG_EXPR);
+		if(isNull() || value.isNull())
+			return new ValueBoolean(null);
+		return new ValueBoolean(getValue().matches(((ValueString)value).getValue()));
+	}
+	
+	@Override
+	public Value convertTo(Type type) {
+		switch(type.getPrimaryType()) {
+			case BOOLEAN:
+				return new ValueBoolean(Boolean.parseBoolean(getValue()));
+			case DOUBLE:
+				try {
+					return new ValueDouble(Double.parseDouble(getValue()));
+				} catch(NumberFormatException exception) {
+					return new ValueDouble(null);
+				}
+			case DURATION:
+				return new ValueDuration(getValue());
+			case INT:
+				try {
+					return new ValueInt(Long.parseLong(getValue()));
+				} catch(NumberFormatException exception) {
+					return new ValueInt(null);
+				}
+			case STRING:
+				return getValue() == null? ValueString.NULL_STRING : this;
+			case TIME:
+				try {
+					return new ValueTime(getValue());
+				} catch(ParseException exception) {
+					return new ValueTime((Long)null);
+				}
+			default:
+				throw new UnsupportedConversionException(getType(), type);
+		}
+	}
+	
+	@Override
+	public ValueInt valueSize() {
+		return new ValueInt(getValue() == null? null : (long)getValue().length());
+	}
+}