/// <summary>Generates a feature.</summary>
/// <exception cref="InvalidOperationException">Thrown when the requested operation is invalid.</exception>
/// <param name="type">The type.</param>
/// <param name="name">The name.</param>
/// <returns>The feature.</returns>
public static Property GenerateFeature(Type type, string name)
{
Property p;
if (type == typeof(string))
p = new StringProperty();
else if (type == typeof(DateTime))
p = new DateTimeProperty();
else if (type.GetInterfaces().Contains(typeof(IEnumerable)))
throw new InvalidOperationException(
string.Format("Property {0} needs to be labeled as an EnumerableFeature", name));
else
p = new Property();
p.Discrete = type.BaseType == typeof(Enum) ||
type == typeof(bool) ||
type == typeof(string) ||
type == typeof(char) ||
type == typeof(DateTime);
p.Type = type;
p.Name = name;
return p;
}
/// <summary>
/// Adds the default string property to descriptor with previously chained name.
/// </summary>
/// <returns>descriptor with added property.</returns>
public Descriptor AsString()
{
StringProperty p = new StringProperty();
p.Name = _name;
p.AsEnum = _label;
AddProperty(p);
return _descriptor;
}
/// <summary>Adds string property to descriptor with previously chained name.</summary>
/// <param name="splitType">How to split string.</param>
/// <param name="separator">(Optional) Separator to use.</param>
/// <param name="exclusions">(Optional) file describing strings to exclude.</param>
/// <returns>descriptor with added property.</returns>
public Descriptor AsString(StringSplitType splitType, string separator = " ", string exclusions = null)
{
StringProperty p = new StringProperty();
p.Name = _name;
p.SplitType = splitType;
p.Separator = separator;
p.ImportExclusions(exclusions);
p.AsEnum = _label;
AddProperty(p);
return _descriptor;
}
public void String_Property_Save_And_Load()
{
StringProperty p = new StringProperty();
p.Name = "MyProp";
p.Start = 5;
p.Dictionary = new string[] { "ONE", "TWO", "THREE", "FOUR" };
p.Exclude = new string[] { "FIVE", "SIX", "SEVEN" };
Serialize(p);
var property = Deserialize<StringProperty>();
Assert.Equal(p, property);
}
public void String_Property_Save_And_Load()
{
StringProperty p = new StringProperty();
p.Name = "MyProp";
p.Start = 5;
p.Dictionary = new string[] { "ONE", "TWO", "THREE", "FOUR" };
p.Exclude = new string[] { "FIVE", "SIX", "SEVEN" };
Serialize(p);
var po = Deserialize<StringProperty>();
Assert.AreEqual(p.Name, po.Name);
Assert.AreEqual(p.Type, po.Type);
Assert.AreEqual(p.Discrete, po.Discrete);
Assert.AreEqual(p.Start, po.Start);
Assert.AreEqual(p.Dictionary, po.Dictionary);
Assert.AreEqual(p.Exclude, po.Exclude);
Assert.AreEqual(p.AsEnum, po.AsEnum);
Assert.AreEqual(p.SplitType, po.SplitType);
}
/// <summary>Generates a property.</summary>
/// <exception cref="InvalidOperationException">Thrown when the requested operation is invalid.</exception>
/// <param name="property">The property.</param>
/// <returns>The property.</returns>
public override Property GenerateProperty(PropertyInfo property)
{
if (property.PropertyType != typeof(string))
{
throw new InvalidOperationException("Must use a string property.");
}
var sp = new StringProperty
{
Name = property.Name,
SplitType = SplitType,
Separator = Separator,
AsEnum = AsEnum,
Discrete = true
};
if (!string.IsNullOrWhiteSpace(ExclusionFile))
{
sp.ImportExclusions(ExclusionFile);
}
return(sp);
}
public override Property GenerateProperty(PropertyInfo property)
{
if (property.PropertyType != typeof(string))
throw new InvalidOperationException("Must use a string property.");
var sp = new StringProperty
{
Name = property.Name,
SplitType = SplitType,
Separator = Separator,
AsEnum = AsEnum,
Discrete = true
};
sp.ImportExclusions(ExclusionFile);
return sp;
}
public static double[] GetWordCount(string item, StringProperty property)
{
double[] counts = new double[property.Dictionary.Length];
var d = new Dictionary<string, int>();
for (int i = 0; i < counts.Length; i++)
{
counts[i] = 0;
// for quick index lookup
d.Add(property.Dictionary[i], i);
}
// get list of words (or chars) from source
IEnumerable<string> words = property.SplitType == StringSplitType.Character ?
GetChars(item) :
GetWords(item, property.Separator);
// TODO: this is not too efficient. Perhaps reconsider how to do this
foreach (var s in words)
if (property.Dictionary.Contains(s))
counts[d[s]]++;
return counts;
}
/// <summary>Gets word count.</summary>
/// <param name="item">The item.</param>
/// <param name="property">The property.</param>
/// <returns>An array of double.</returns>
public static double[] GetWordCount(string item, StringProperty property)
{
// get list of words (or chars) from source
IEnumerable<string> words = property.SplitType == StringSplitType.Character ?
GetChars(item) :
GetWords(item, property.Separator);
var groupedWords = words.ToLookup(w => w);
return property.Dictionary.Select(d => (double)groupedWords[d].Count()).ToArray();
}
/// <summary>Adds string property to descriptor with previously chained name.</summary>
/// <returns>descriptor with added property.</returns>
public Descriptor AsStringEnum()
{
var p = new StringProperty();
p.Name = this._name;
p.AsEnum = true;
this.AddProperty(p);
return this._descriptor;
}