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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 pl.edu.mimuw.cloudatlas.model.Value;
import pl.edu.mimuw.cloudatlas.model.ValueBoolean;
/**
* A class that wraps a Java <code>Boolean</code> object.
*/
public class ValueBoolean extends ValueSimple<Boolean> {
/**
* Constructs a new <code>ValueBoolean</code> object wrapping the specified <code>value</code>.
*
* @param value the value to wrap
*/
public ValueBoolean(Boolean value) {
super(value);
}
@Override
public Type getType() {
return TypePrimitive.BOOLEAN;
}
@Override
public Value getDefaultValue() {
return new ValueBoolean(false);
}
@Override
public ValueBoolean isLowerThan(Value value) {
sameTypesOrThrow(value, Operation.COMPARE);
if(isNull() || value.isNull())
return new ValueBoolean(null);
return new ValueBoolean(!getValue() && ((ValueBoolean)value).getValue());
}
@Override
public ValueBoolean and(Value value) {
sameTypesOrThrow(value, Operation.AND);
if(isNull() || value.isNull())
return new ValueBoolean(null);
return new ValueBoolean(getValue() && ((ValueBoolean)value).getValue());
}
@Override
public ValueBoolean or(Value value) { // -
sameTypesOrThrow(value, Operation.OR);
if(isNull() || value.isNull())
return new ValueBoolean(null);
return new ValueBoolean(getValue() || ((ValueBoolean)value).getValue());
}
@Override
public ValueBoolean negate() { // !
return new ValueBoolean(isNull()? null : !getValue());
}
@Override
public Value convertTo(Type type) {
switch(type.getPrimaryType()) {
case BOOLEAN:
return this;
case STRING:
return getValue() == null? ValueString.NULL_STRING : new ValueString(getValue().toString());
default:
throw new UnsupportedConversionException(getType(), type);
}
}
}
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