Implement slice via adapters (#5198)

2020-01-14 12:55:41 +13:00
parent f100b8d878
commit a73e25e15f
7 changed files with 190 additions and 45 deletions
--- a/src/data/data.cc
+++ b/src/data/data.cc
@@ -340,6 +340,9 @@ template DMatrix* DMatrix::Create<data::DataTableAdapter>(
 template DMatrix* DMatrix::Create<data::FileAdapter>(
    data::FileAdapter* adapter, float missing, int nthread,
    const std::string& cache_prefix, size_t page_size);
+template DMatrix* DMatrix::Create<data::DMatrixSliceAdapter>(
+    data::DMatrixSliceAdapter* adapter, float missing, int nthread,
+    const std::string& cache_prefix, size_t page_size);

 SparsePage SparsePage::GetTranspose(int num_columns) const {
  SparsePage transpose;