protected override IEnumerable GetObjectReader(ContentQueryTranslator translator)
{
if (translator == null || translator.ReturnType == null || translator.ReturnType == typeof(Contact))
return new ContactReader(UseRawContacts, translator, content, resources);
else if (translator.ReturnType == typeof(Phone))
return new GenericQueryReader<Phone>(translator, content, resources, ContactHelper.GetPhone);
else if (translator.ReturnType == typeof(Email))
return new GenericQueryReader<Email>(translator, content, resources, ContactHelper.GetEmail);
else if (translator.ReturnType == typeof(Address))
return new GenericQueryReader<Address>(translator, content, resources, ContactHelper.GetAddress);
else if (translator.ReturnType == typeof(Relationship))
return new GenericQueryReader<Relationship>(translator, content, resources, ContactHelper.GetRelationship);
else if (translator.ReturnType == typeof(InstantMessagingAccount))
return new GenericQueryReader<InstantMessagingAccount>(translator, content, resources, ContactHelper.GetImAccount);
else if (translator.ReturnType == typeof(Website))
return new GenericQueryReader<Website>(translator, content, resources, ContactHelper.GetWebsite);
else if (translator.ReturnType == typeof(Organization))
return new GenericQueryReader<Organization>(translator, content, resources, ContactHelper.GetOrganization);
else if (translator.ReturnType == typeof(Note))
return new GenericQueryReader<Note>(translator, content, resources, ContactHelper.GetNote);
else if (translator.ReturnType == typeof(string))
return new ProjectionReader<string>(content, translator, (cur, col) => cur.GetString(col));
else if (translator.ReturnType == typeof(int))
return new ProjectionReader<int>(content, translator, (cur, col) => cur.GetInt(col));
throw new ArgumentException();
}
public ContactReader(bool useRawContacts, ContentQueryTranslator translator, ContentResolver content, Resources resources)
{
this.rawContacts = useRawContacts;
this.translator = translator;
this.content = content;
this.resources = resources;
}
public GenericQueryReader(ContentQueryTranslator translator, ContentResolver content, Resources resources, Func <ICursor, Resources, T> selector, string defaultSort)
: this(translator, content, resources, selector)
{
if (defaultSort == null)
{
throw new ArgumentNullException("defaultSort");
}
this.defaultSort = defaultSort;
}
object IQueryProvider.Execute(Expression expression)
{
var translator = new ContentQueryTranslator(this, this.tableFinder);
expression = translator.Translate(expression);
if (translator.IsCount || translator.IsAny)
{
ICursor cursor = null;
try
{
string[] projections = (translator.Projections != null)
? translator.Projections
.Where(p => p.Columns != null)
.SelectMany(t => t.Columns)
.ToArray()
: null;
cursor = this.content.Query(translator.Table, projections, translator.QueryString,
translator.ClauseParameters, translator.SortString);
if (translator.IsCount)
{
return(cursor.Count);
}
else
{
return(cursor.Count > 0);
}
}
finally
{
if (cursor != null)
{
cursor.Close();
}
}
}
IQueryable q = GetObjectReader(translator).AsQueryable();
//IQueryable q = GetObjectReader (null).AsQueryable();
expression = ReplaceQueryable(expression, q);
if (expression.Type.IsGenericType && expression.Type.GetGenericTypeDefinition() == typeof(IOrderedQueryable <>))
{
return(q.Provider.CreateQuery(expression));
}
else
{
return(q.Provider.Execute(expression));
}
}
protected override IEnumerable GetObjectReader(ContentQueryTranslator translator)
{
if (translator == null || translator.ReturnType == null || translator.ReturnType == typeof(Contact))
{
return(new ContactReader(UseRawContacts, translator, content, resources));
}
else if (translator.ReturnType == typeof(Phone))
{
return(new GenericQueryReader <Phone>(translator, content, resources, ContactHelper.GetPhone));
}
else if (translator.ReturnType == typeof(Email))
{
return(new GenericQueryReader <Email>(translator, content, resources, ContactHelper.GetEmail));
}
else if (translator.ReturnType == typeof(Address))
{
return(new GenericQueryReader <Address>(translator, content, resources, ContactHelper.GetAddress));
}
else if (translator.ReturnType == typeof(Relationship))
{
return(new GenericQueryReader <Relationship>(translator, content, resources, ContactHelper.GetRelationship));
}
else if (translator.ReturnType == typeof(InstantMessagingAccount))
{
return(new GenericQueryReader <InstantMessagingAccount>(translator, content, resources, ContactHelper.GetImAccount));
}
else if (translator.ReturnType == typeof(Website))
{
return(new GenericQueryReader <Website>(translator, content, resources, ContactHelper.GetWebsite));
}
else if (translator.ReturnType == typeof(Organization))
{
return(new GenericQueryReader <Organization>(translator, content, resources, ContactHelper.GetOrganization));
}
else if (translator.ReturnType == typeof(Note))
{
return(new GenericQueryReader <Note>(translator, content, resources, ContactHelper.GetNote));
}
else if (translator.ReturnType == typeof(string))
{
return(new ProjectionReader <string>(content, translator, (cur, col) => cur.GetString(col)));
}
else if (translator.ReturnType == typeof(int))
{
return(new ProjectionReader <int>(content, translator, (cur, col) => cur.GetInt(col)));
}
throw new ArgumentException();
}
public GenericQueryReader(ContentQueryTranslator translator, ContentResolver content, Resources resources, Func <ICursor, Resources, T> selector)
{
if (translator == null)
{
throw new ArgumentNullException("translator");
}
if (content == null)
{
throw new ArgumentNullException("content");
}
if (resources == null)
{
throw new ArgumentNullException("resources");
}
if (selector == null)
{
throw new ArgumentNullException("selector");
}
this.translator = translator;
this.content = content;
this.resources = resources;
this.selector = selector;
}
internal ProjectionReader(ContentResolver content, ContentQueryTranslator translator, Func <ICursor, int, T> selector)
{
this.content = content;
this.translator = translator;
this.selector = selector;
}
protected abstract IEnumerable GetObjectReader(ContentQueryTranslator translator);