[feature](java-udtf) support java-udtf

be/src/pipeline/exec/table_function_operator.cpp

@@ -53,13 +53,15 @@ Status TableFunctionLocalState::open(RuntimeState* state) {
     for (size_t i = 0; i < _vfn_ctxs.size(); i++) {
         RETURN_IF_ERROR(p._vfn_ctxs[i]->clone(state, _vfn_ctxs[i]));
 
-        const std::string& tf_name = _vfn_ctxs[i]->root()->fn().name.function_name;
         vectorized::TableFunction* fn = nullptr;
-        RETURN_IF_ERROR(vectorized::TableFunctionFactory::get_fn(tf_name, state->obj_pool(), &fn));
+        RETURN_IF_ERROR(vectorized::TableFunctionFactory::get_fn(_vfn_ctxs[i]->root()->fn(),
+                                                                 state->obj_pool(), &fn));
         fn->set_expr_context(_vfn_ctxs[i]);
         _fns.push_back(fn);
     }
-
+    for (auto* fn : _fns) {
+        RETURN_IF_ERROR(fn->open());
+    }
     _cur_child_offset = -1;
     return Status::OK();
 }
@@ -138,6 +140,7 @@ bool TableFunctionLocalState::_roll_table_functions(int last_eos_idx) {
 bool TableFunctionLocalState::_is_inner_and_empty() {
     for (int i = 0; i < _parent->cast<TableFunctionOperatorX>()._fn_num; i++) {
         // if any table function is not outer and has empty result, go to next child row
+        // if it's outer function, will be insert into one row NULL
         if (!_fns[i]->is_outer() && _fns[i]->current_empty()) {
             return true;
         }
@@ -269,9 +272,8 @@ Status TableFunctionOperatorX::init(const TPlanNode& tnode, RuntimeState* state)
         _vfn_ctxs.push_back(ctx);
 
         auto root = ctx->root();
-        const std::string& tf_name = root->fn().name.function_name;
         vectorized::TableFunction* fn = nullptr;
-        RETURN_IF_ERROR(vectorized::TableFunctionFactory::get_fn(tf_name, _pool, &fn));
+        RETURN_IF_ERROR(vectorized::TableFunctionFactory::get_fn(root->fn(), _pool, &fn));
         fn->set_expr_context(ctx);
         _fns.push_back(fn);
     }

be/src/pipeline/exec/table_function_operator.h

@@ -56,6 +56,13 @@ class TableFunctionLocalState final : public PipelineXLocalState<> {
     ~TableFunctionLocalState() override = default;
 
     Status open(RuntimeState* state) override;
+    Status close(RuntimeState* state) override {
+        for (auto* fn : _fns) {
+            RETURN_IF_ERROR(fn->close());
+        }
+        RETURN_IF_ERROR(PipelineXLocalState<>::close(state));
+        return Status::OK();
+    }
     void process_next_child_row();
     Status get_expanded_block(RuntimeState* state, vectorized::Block* output_block, bool* eos);
 
@@ -74,7 +81,7 @@ class TableFunctionLocalState final : public PipelineXLocalState<> {
 
     std::vector<vectorized::TableFunction*> _fns;
     vectorized::VExprContextSPtrs _vfn_ctxs;
-    int64_t _cur_child_offset = 0;
+    int64_t _cur_child_offset = -1;
     std::unique_ptr<vectorized::Block> _child_block;
     int _current_row_insert_times = 0;
     bool _child_eos = false;

be/src/vec/columns/column_array.cpp

@@ -413,7 +413,7 @@ void ColumnArray::insert(const Field& x) {
 }
 
 void ColumnArray::insert_from(const IColumn& src_, size_t n) {
-    DCHECK(n < src_.size());
+    DCHECK_LT(n, src_.size());
     const ColumnArray& src = assert_cast<const ColumnArray&>(src_);
     size_t size = src.size_at(n);
     size_t offset = src.offset_at(n);

be/src/vec/exec/vtable_function_node.cpp

@@ -58,9 +58,8 @@ Status VTableFunctionNode::init(const TPlanNode& tnode, RuntimeState* state) {
         _vfn_ctxs.push_back(ctx);
 
         auto root = ctx->root();
-        const std::string& tf_name = root->fn().name.function_name;
         TableFunction* fn = nullptr;
-        RETURN_IF_ERROR(TableFunctionFactory::get_fn(tf_name, _pool, &fn));
+        RETURN_IF_ERROR(TableFunctionFactory::get_fn(root->fn(), _pool, &fn));
         fn->set_expr_context(ctx);
         _fns.push_back(fn);
     }
@@ -93,6 +92,7 @@ Status VTableFunctionNode::_prepare_output_slot_ids(const TPlanNode& tnode) {
 bool VTableFunctionNode::_is_inner_and_empty() {
     for (int i = 0; i < _fn_num; i++) {
         // if any table function is not outer and has empty result, go to next child row
+        // if it's outer function, will be insert into NULL
         if (!_fns[i]->is_outer() && _fns[i]->current_empty()) {
             return true;
         }

be/src/vec/exec/vtable_function_node.h

@@ -58,7 +58,11 @@ class VTableFunctionNode final : public ExecNode {
     Status alloc_resource(RuntimeState* state) override {
         SCOPED_TIMER(_exec_timer);
         RETURN_IF_ERROR(ExecNode::alloc_resource(state));
-        return VExpr::open(_vfn_ctxs, state);
+        RETURN_IF_ERROR(VExpr::open(_vfn_ctxs, state));
+        for (auto* fn : _fns) {
+            RETURN_IF_ERROR(fn->open());
+        }
+        return Status::OK();
     }
     Status get_next(RuntimeState* state, Block* block, bool* eos) override;
     bool need_more_input_data() const { return !_child_block->rows() && !_child_eos; }
@@ -67,6 +71,9 @@ class VTableFunctionNode final : public ExecNode {
         if (_num_rows_filtered_counter != nullptr) {
             COUNTER_SET(_num_rows_filtered_counter, static_cast<int64_t>(_num_rows_filtered));
         }
+        for (auto* fn : _fns) {
+            static_cast<void>(fn->close());
+        }
         ExecNode::release_resource(state);
     }
 
@@ -145,7 +152,7 @@ class VTableFunctionNode final : public ExecNode {
     std::shared_ptr<Block> _child_block;
     std::vector<SlotDescriptor*> _child_slots;
     std::vector<SlotDescriptor*> _output_slots;
-    int64_t _cur_child_offset = 0;
+    int64_t _cur_child_offset = -1;
 
     VExprContextSPtrs _vfn_ctxs;
 

be/src/vec/exprs/table_function/table_function.h

@@ -58,6 +58,7 @@ class TableFunction {
     virtual int get_value(MutableColumnPtr& column, int max_step) {
         max_step = std::max(1, std::min(max_step, (int)(_cur_size - _cur_offset)));
         int i = 0;
+        // TODO: this for loop maybe could refactor, and call once get_value function, it's could insert into max_step value once
         for (; i < max_step && !eos(); i++) {
             get_value(column);
             forward();

be/src/vec/exprs/table_function/table_function_factory.cpp

@@ -17,10 +17,14 @@
 
 #include "vec/exprs/table_function/table_function_factory.h"
 
+#include <gen_cpp/Types_types.h>
+
+#include <string_view>
 #include <utility>
 
 #include "common/object_pool.h"
 #include "vec/exprs/table_function/table_function.h"
+#include "vec/exprs/table_function/udf_table_function.h"
 #include "vec/exprs/table_function/vexplode.h"
 #include "vec/exprs/table_function/vexplode_bitmap.h"
 #include "vec/exprs/table_function/vexplode_json_array.h"
@@ -65,23 +69,30 @@ const std::unordered_map<std::string, std::function<std::unique_ptr<TableFunctio
                 {"explode_map", TableFunctionCreator<VExplodeMapTableFunction> {}},
                 {"explode", TableFunctionCreator<VExplodeTableFunction> {}}};
 
-Status TableFunctionFactory::get_fn(const std::string& fn_name_raw, ObjectPool* pool,
-                                    TableFunction** fn) {
-    bool is_outer = match_suffix(fn_name_raw, COMBINATOR_SUFFIX_OUTER);
-    std::string fn_name_real =
-            is_outer ? remove_suffix(fn_name_raw, COMBINATOR_SUFFIX_OUTER) : fn_name_raw;
-
-    auto fn_iterator = _function_map.find(fn_name_real);
-    if (fn_iterator != _function_map.end()) {
-        *fn = pool->add(fn_iterator->second().release());
+Status TableFunctionFactory::get_fn(const TFunction& t_fn, ObjectPool* pool, TableFunction** fn) {
+    bool is_outer = match_suffix(t_fn.name.function_name, COMBINATOR_SUFFIX_OUTER);
+    if (t_fn.binary_type == TFunctionBinaryType::JAVA_UDF) {
+        *fn = pool->add(UDFTableFunction::create_unique(t_fn).release());
         if (is_outer) {
             (*fn)->set_outer();
         }
-
         return Status::OK();
-    }
+    } else {
+        const std::string& fn_name_raw = t_fn.name.function_name;
+        const std::string& fn_name_real =
+                is_outer ? remove_suffix(fn_name_raw, COMBINATOR_SUFFIX_OUTER) : fn_name_raw;
 
-    return Status::NotSupported("Table function {} is not support", fn_name_raw);
+        auto fn_iterator = _function_map.find(fn_name_real);
+        if (fn_iterator != _function_map.end()) {
+            *fn = pool->add(fn_iterator->second().release());
+            if (is_outer) {
+                (*fn)->set_outer();
+            }
+
+            return Status::OK();
+        }
+    }
+    return Status::NotSupported("Table function {} is not support", t_fn.name.function_name);
 }
 
 } // namespace doris::vectorized

be/src/vec/exprs/table_function/table_function_factory.h

@@ -17,6 +17,8 @@
 
 #pragma once
 
+#include <gen_cpp/Types_types.h>
+
 #include <functional>
 #include <memory>
 #include <string>
@@ -33,7 +35,7 @@ class TableFunction;
 class TableFunctionFactory {
 public:
     TableFunctionFactory() = delete;
-    static Status get_fn(const std::string& fn_name_raw, ObjectPool* pool, TableFunction** fn);
+    static Status get_fn(const TFunction& t_fn, ObjectPool* pool, TableFunction** fn);
 
     const static std::unordered_map<std::string, std::function<std::unique_ptr<TableFunction>()>>
             _function_map;