/*
* Creates a CacheList from the specified Scanner. Each line of the Scanner should contain the description of a
* cache in a format suitable for consumption by the Cache constructor. The resulting CacheList should contain one
* Cache object corresponding to each line of the Scanner.
*
* Sets the initial value of the title and owner constraints to the empty string, sets the minimum difficulty and
* terrain constraints to 1.0, and sets the maximum difficulty and terrain constraints to 5.0.
*
* Throws an IOException if the Scanner throws an IOException, or an IllegalArgumentException if any of the
* individual lines are not appropriate for the Cache constructor.
*
* When an IllegalArgumentException e is thrown, e.getMessage() is the number of the line that was being read when
* the error that triggered the exception was encountered. Lines are numbered beginning with 1.
*/
public PersonList(String people)
{
int lineNum = 0;
allPeople = new ArrayList();
//Cache will throw IllegArg errors, so this try/catch will grab them and throw a new error
try
{
using (StringReader reader = new StringReader(people))
{
string line = reader.ReadLine();
//keeps track of the line number, then runs through Cache to check for errors
while (line != null)
{
lineNum++;
allPeople.Add(new Person(line));
line = reader.ReadLine();
}
}
}
catch (System.Exception)
{
throw new SystemException("Line number: " + lineNum);
}
SetTitleConstraint("");
IComparer myComparer = new CompareNamesClass();
allPeople.Sort(myComparer);
}
/*
* Returns a list that contains each cache c from the CacheList so long as c's title contains the title constraint
* as a substring, c's owner equals the owner constraint (unless the owner constraint is empty), c's difficulty
* rating is between the minimum and maximum difficulties (inclusive), and c's terrain rating is between the minimum
* and maximum terrains (inclusive). Both the title constraint and the owner constraint are case insensitive.
*
* The returned list is arranged in ascending order by cache title.
*/
public ArrayList Select()
{
ArrayList people = new ArrayList();
//for each cache, if all the constraints apply, that cache will be added to the ArrayList
foreach (Person currP in allPeople)
{
if (currP.GetName().ToLower().Contains(titleConstraint.ToLower()))
{
people.Add(currP);
}
}
//Sorts the arrayList
IComparer myComparer = new CompareNamesClass();
people.Sort(myComparer);
return(people);
}