private static object BuildOperation <TResult>(CassandraQuerySetup setup, CassandraSlicePredicate predicate, IDictionary <string, object> calls)
{
if (calls.ContainsKey("CountColumnsByKey"))
{
return(new MultiGetColumnCount(setup.Keys, setup.SuperColumnName, predicate));
}
if (calls.ContainsKey("CountColumns"))
{
return(new ColumnCount(setup.Keys.First(), setup.SuperColumnName, predicate));
}
var forSuperColumn = typeof(TResult) == typeof(FluentSuperColumnFamily);
if (!forSuperColumn && setup.SuperColumnName != null)
{
throw new CassandraException("'ForSuperColumn' can only be used on a super column family.");
}
if (forSuperColumn)
{
if (setup.IndexClause != null)
{
var indexClause = new CassandraIndexClause(setup.StartKey, setup.ColumnCount, setup.IndexClause);
return(new GetSuperColumnFamilyIndexedSlices(indexClause, predicate));
}
else if (setup.Keys.Count() > 0)
{
return(new MultiGetSuperColumnFamilySlice(setup.Keys, setup.SuperColumnName, predicate));
}
else
{
var keyRange = new CassandraKeyRange(setup.StartKey, setup.EndKey, setup.StartToken, setup.EndToken, setup.KeyCount);
return(new GetSuperColumnFamilyRangeSlices(keyRange, setup.SuperColumnName, predicate));
}
}
else
{
if (setup.IndexClause != null)
{
var indexClause = new CassandraIndexClause(setup.StartKey, setup.KeyCount, setup.IndexClause);
return(new GetColumnFamilyIndexedSlices(indexClause, predicate));
}
else if (setup.Keys.Count() > 0)
{
return(new MultiGetColumnFamilySlice(setup.Keys, predicate));
}
else
{
var keyRange = new CassandraKeyRange(setup.StartKey, setup.EndKey, setup.StartToken, setup.EndToken, setup.KeyCount);
return(new GetColumnFamilyRangeSlices(keyRange, predicate));
}
}
}
private static CassandraSlicePredicate BuildSlicePredicate(CassandraQuerySetup setup)
{
if (setup.Columns.Count() > 0)
return new CassandraColumnSlicePredicate(setup.Columns);
return new CassandraRangeSlicePredicate(
setup.StartColumn,
setup.EndColumn,
setup.Reverse,
setup.ColumnCount);
}
internal CassandraSlicePredicateQuery(CassandraQuerySetup <TResult, CompareWith> setup, BaseCassandraColumnFamily family, Expression expression)
{
Setup = setup;
Family = family;
Expression = expression;
if (Expression == null)
{
Expression = Expression.Constant(this);
}
}
private static CassandraQuerySetup BuildQuerySetup(IDictionary<string, object> calls)
{
var setup = new CassandraQuerySetup();
object keyCount;
if (calls.TryGetValue("TakeKeys", out keyCount))
setup.KeyCount = (int)keyCount;
object columnCount;
if (calls.TryGetValue("TakeColumns", out columnCount))
setup.ColumnCount = (int)columnCount;
object keys;
if (calls.TryGetValue("FetchKeys", out keys))
setup.Keys = (CassandraObject[])keys;
object columns;
if (calls.TryGetValue("FetchColumns", out columns))
setup.Columns = (CassandraObject[])columns;
object startKey;
if (calls.TryGetValue("StartWithKey", out startKey))
setup.StartKey = (CassandraObject)startKey;
object endKey;
if (calls.TryGetValue("TakeUntilKey", out endKey))
setup.EndKey = (CassandraObject)endKey;
object startColumn;
if (calls.TryGetValue("StartWithColumn", out startColumn))
setup.StartColumn = (CassandraObject)startColumn;
object endColumn;
if (calls.TryGetValue("TakeUntilColumn", out endColumn))
setup.EndColumn = (CassandraObject)endColumn;
object startToken;
if (calls.TryGetValue("StartWithToken", out startToken))
setup.StartToken = (string)startToken;
object endToken;
if (calls.TryGetValue("TakeUntilToken", out endToken))
setup.EndToken = (string)endToken;
object superColumnName;
if (calls.TryGetValue("ForSuperColumn", out superColumnName))
setup.SuperColumnName = (CassandraObject)superColumnName;
object indexClause;
if (calls.TryGetValue("Where", out indexClause))
setup.IndexClause = (Expression<Func<IFluentRecordExpression, bool>>)indexClause;
setup.Reverse = calls.ContainsKey("ReverseColumns");
if (calls.ContainsKey("CountColumnsByKey") && setup.Columns.Count() > 0)
throw new CassandraException("'FetchKeys' must contain at least one key when being used with 'CountColumnsByKey'");
if (calls.ContainsKey("CountColumns") && setup.Columns.Count() > 1)
throw new CassandraException("'FetchKeys' must contain only one key when being used with 'CountColumns'");
return setup;
}