public int getPartitionKey(IScalar partitionCol)
{
if (partitionCol.getDataCategory() != cat)
{
throw new Exception("Data category incompatible.");
}
if (cat == DATA_CATEGORY.TEMPORAL && type != partitionCol.getDataType())
{
DATA_TYPE old = partitionCol.getDataType();
partitionCol = (IScalar)Utils.castDateTime(partitionCol, type);
if (partitionCol == null)
{
throw new Exception("Can't convert type from " + old.ToString() + " to " + type.ToString());
}
}
int index = 0;
if (dict.ContainsKey(partitionCol))
{
index = (int)dict[partitionCol];
}
else
{
index = -1;
}
return(index);
}
public int getPartitionKey(IScalar partitionCol)
{
if (partitionCol.getDataCategory() != cat)
{
throw new Exception("Data category incompatible.");
}
if (cat == DATA_CATEGORY.TEMPORAL && type != partitionCol.getDataType())
{
//类型转化
DATA_TYPE old = partitionCol.getDataType();
partitionCol = (IScalar)Utils.castDateTime(partitionCol, type);
if (partitionCol == null)
{
throw new Exception("Can't convert type from " + old.ToString() + " to " + type.ToString());
}
}
int rows = partitionCol.rows();
int key = partitionCol.hashBucket(buckets);
return(key);
}
public int getPartitionKey(IScalar partitionCol)
{
if (partitionCol.getDataCategory() != cat)
{
throw new Exception("Data category incompatible.");
}
if (cat == DATA_CATEGORY.TEMPORAL && type != partitionCol.getDataType())
{
DATA_TYPE old = partitionCol.getDataType();
partitionCol = (IScalar)Utils.castDateTime(partitionCol, type);
if (partitionCol == null)
{
throw new Exception("Can't convert type from " + old.ToString() + " to " + type.ToString());
}
}
if (type == DATA_TYPE.DT_LONG)
{
throw new Exception("Long type value can't be used as a partition column.");
}
int key = partitionCol.hashBucket(1048576);
return(key);
}
public int getPartitionKey(IScalar partitionCol)
{
if (partitionCol.getDataCategory() != cat)
{
throw new Exception("Data category incompatible.");
}
if (cat == DATA_CATEGORY.TEMPORAL && type != partitionCol.getDataType())
{
DATA_TYPE old = partitionCol.getDataType();
partitionCol = (IScalar)Utils.castDateTime(partitionCol, type);
if (partitionCol == null)
{
throw new Exception("Can't convert type from " + old.ToString() + " to " + type.ToString());
}
}
int partitions = range.rows() - 1;
int key = range.asof(partitionCol);
if (key >= partitions)
{
key = -1;
}
return(key);
}