feat(workflow): update workflow conditional logic

api/app/core/workflow/nodes/cycle_graph/loop.py

@@ -3,10 +3,11 @@ from typing import Any
 
 from langgraph.graph.state import CompiledStateGraph
 
-from app.core.workflow.expression_evaluator import evaluate_condition, evaluate_expression
+from app.core.workflow.expression_evaluator import evaluate_expression
 from app.core.workflow.nodes import WorkflowState
 from app.core.workflow.nodes.cycle_graph import LoopNodeConfig
-from app.core.workflow.nodes.operators import ConditionExpressionBuilder
+from app.core.workflow.nodes.enums import ValueInputType, ComparisonOperator, LogicOperator
+from app.core.workflow.nodes.operators import TypeTransformer, ConditionExpressionResolver, CompareOperatorInstance
 from app.core.workflow.variable_pool import VariablePool
 
 logger = logging.getLogger(__name__)
@@ -14,11 +15,13 @@ logger = logging.getLogger(__name__)
 
 class LoopRuntime:
     """
-    Runtime executor for loop nodes in a workflow.
+    Runtime executor for a loop node in a workflow graph.
 
-    Handles iterative execution of a loop node according to defined loop variables
-    and conditional expressions. Supports maximum loop count and loop control
-    through the workflow state.
+    This class is responsible for executing a loop node at runtime:
+    - Initializing loop-scoped variables
+    - Evaluating loop continuation conditions
+    - Repeatedly invoking a compiled sub-graph
+    - Enforcing maximum loop count and external stop signals
     """
 
     def __init__(
@@ -29,13 +32,13 @@ class LoopRuntime:
             state: WorkflowState,
     ):
         """
-        Initialize the loop runtime.
+        Initialize the loop runtime executor.
 
         Args:
-            graph: Compiled workflow graph capable of async invocation.
-            node_id: Unique identifier of the loop node.
-            config: Dictionary containing loop node configuration.
-            state: Current workflow state at the point of loop execution.
+            graph: A compiled LangGraph state graph representing the loop body.
+            node_id: The unique identifier of the loop node in the workflow.
+            config: Raw configuration dictionary for the loop node.
+            state: The current workflow state before entering the loop.
         """
         self.graph = graph
         self.state = state
@@ -46,12 +49,15 @@ class LoopRuntime:
         """
         Initialize workflow state for loop execution.
 
-        - Evaluates initial values of loop variables.
-        - Stores loop variables in runtime_vars and node_outputs.
-        - Marks the loop as active by setting 'looping' to True.
+        This method:
+        - Evaluates initial values of loop variables
+        - Stores loop variables into both `runtime_vars` and `node_outputs`
+          under the current loop node's scope
+        - Creates a shallow copy of the workflow state
+        - Marks the loop as active by setting `looping = True`
 
         Returns:
-            A copy of the workflow state prepared for the loop execution.
+            WorkflowState: A prepared workflow state used for loop execution.
         """
         pool = VariablePool(self.state)
         # 循环变量
@@ -61,7 +67,7 @@ class LoopRuntime:
                 variables=pool.get_all_conversation_vars(),
                 node_outputs=pool.get_all_node_outputs(),
                 system_vars=pool.get_all_system_vars(),
-            )
+            ) if variable.input_type == ValueInputType.VARIABLE else TypeTransformer.transform(variable.value, variable.type)
             for variable in self.typed_config.cycle_vars
         }
         self.state["node_outputs"][self.node_id] = {
@@ -70,7 +76,7 @@ class LoopRuntime:
                 variables=pool.get_all_conversation_vars(),
                 node_outputs=pool.get_all_node_outputs(),
                 system_vars=pool.get_all_system_vars(),
-            )
+            ) if variable.input_type == ValueInputType.VARIABLE else TypeTransformer.transform(variable.value, variable.type)
             for variable in self.typed_config.cycle_vars
         }
         loopstate = WorkflowState(
@@ -79,49 +85,93 @@ class LoopRuntime:
         loopstate["looping"] = True
         return loopstate
 
-    def _get_loop_expression(self):
+    @staticmethod
+    def _evaluate(operator, instance: CompareOperatorInstance) -> Any:
         """
-        Build the Python boolean expression for evaluating the loop condition.
+        Dispatch and execute a comparison operator against a resolved
+        CompareOperatorInstance.
 
-        - Converts each condition in the loop configuration into a Python expression string.
-        - Combines multiple conditions with the configured logical operator (AND/OR).
+        Args:
+            operator: A ComparisonOperator enum value.
+            instance: A CompareOperatorInstance bound to concrete operands.
 
         Returns:
-            A string representing the combined loop condition expression.
+            Any: The evaluation result, typically a boolean.
         """
-        branch_conditions = [
-            ConditionExpressionBuilder(
-                left=condition.left,
-                operator=condition.comparison_operator,
-                right=condition.right
-            ).build()
-            for condition in self.typed_config.condition.expressions
-        ]
-        if len(branch_conditions) > 1:
-            combined_condition = f' {self.typed_config.condition.logical_operator} '.join(branch_conditions)
-        else:
-            combined_condition = branch_conditions[0]
+        match operator:
+            case ComparisonOperator.EMPTY:
+                return instance.empty()
+            case ComparisonOperator.NOT_EMPTY:
+                return instance.not_empty()
+            case ComparisonOperator.CONTAINS:
+                return instance.contains()
+            case ComparisonOperator.NOT_CONTAINS:
+                return instance.not_contains()
+            case ComparisonOperator.START_WITH:
+                return instance.startswith()
+            case ComparisonOperator.END_WITH:
+                return instance.endswith()
+            case ComparisonOperator.EQ:
+                return instance.eq()
+            case ComparisonOperator.NE:
+                return instance.ne()
+            case ComparisonOperator.LT:
+                return instance.lt()
+            case ComparisonOperator.LE:
+                return instance.le()
+            case ComparisonOperator.GT:
+                return instance.gt()
+            case ComparisonOperator.GE:
+                return instance.ge()
+            case _:
+                raise ValueError(f"Invalid condition: {operator}")
 
-        return combined_condition
+    def evaluate_conditional(self, state) -> bool:
+        """
+        Evaluate the loop continuation condition at runtime.
+
+        This method:
+        - Resolves all condition expressions against the current workflow state
+        - Evaluates each comparison expression immediately
+        - Combines results using the configured logical operator (AND / OR)
+
+        Args:
+            state: The current workflow state during loop execution.
+
+        Returns:
+            bool: True if the loop should continue, False otherwise.
+        """
+        conditions = []
+
+        for expression in self.typed_config.condition.expressions:
+            left_value = VariablePool(state).get(expression.left)
+            evaluator = ConditionExpressionResolver.resolve_by_value(left_value)(
+                VariablePool(state),
+                expression.left,
+                expression.right,
+                expression.input_type
+            )
+            conditions.append(self._evaluate(expression.operator, evaluator))
+        if self.typed_config.condition.logical_operator == LogicOperator.AND:
+            return all(conditions)
+        else:
+            return any(conditions)
 
     async def run(self):
         """
-        Execute the loop node until the condition is no longer met, the loop is
-        manually stopped, or the maximum loop count is reached.
+        Execute the loop node until termination conditions are met.
+
+        The loop terminates when any of the following occurs:
+        - The loop condition evaluates to False
+        - The `looping` flag in the workflow state is set to False
+        - The maximum loop count is reached
 
         Returns:
-            The final runtime variables of this loop node after completion.
+            dict[str, Any]: The final runtime variables of this loop node.
         """
         loopstate = self._init_loop_state()
-        expression = self._get_loop_expression()
-        loop_variable_pool = VariablePool(loopstate)
         loop_time = self.typed_config.max_loop
-        while evaluate_condition(
-                expression=expression,
-                variables=loop_variable_pool.get_all_conversation_vars(),
-                node_outputs=loop_variable_pool.get_all_node_outputs(),
-                system_vars=loop_variable_pool.get_all_system_vars(),
-        ) and loopstate["looping"] and loop_time > 0:
+        while self.evaluate_conditional(loopstate) and loopstate["looping"] and loop_time > 0:
             logger.info(f"loop node {self.node_id}: running")
             await self.graph.ainvoke(loopstate)
             loop_time -= 1

api/app/core/workflow/nodes/end/node.py

@@ -61,7 +61,7 @@ class EndNode(BaseNode):
             引用的节点 ID 列表
         """
         # 匹配 {{node_id.xxx}} 格式
-        pattern = r'\{\{([a-zA-Z0-9_-]+)\.[a-zA-Z0-9_]+\}\}'
+        pattern = r'\{\{([a-zA-Z0-9_]+)\.[a-zA-Z0-9_]+\}\}'
         matches = re.findall(pattern, template)
         return list(set(matches))  # 去重
 

api/app/core/workflow/nodes/enums.py

@@ -45,7 +45,8 @@ class LogicOperator(StrEnum):
 
 
 class AssignmentOperator(StrEnum):
-    ASSIGN = "assign"
+    COVER = "cover"  # 覆盖
+    ASSIGN = "assign"  # 设置
     CLEAR = "clear"
 
     ADD = "add"  # +=
@@ -87,3 +88,8 @@ class HttpErrorHandle(StrEnum):
     NONE = "none"
     DEFAULT = "default"
     BRANCH = "branch"
+
+
+class ValueInputType(StrEnum):
+    VARIABLE = "Variable"
+    CONSTANT = "Constant"

api/app/core/workflow/nodes/if_else/config.py

@@ -1,12 +1,13 @@
 """Condition Configuration"""
+from typing import Any
 from pydantic import Field, BaseModel, field_validator
 
 from app.core.workflow.nodes.base_config import BaseNodeConfig
-from app.core.workflow.nodes.enums import ComparisonOperator, LogicOperator
+from app.core.workflow.nodes.enums import ComparisonOperator, LogicOperator, ValueInputType
 
 
 class ConditionDetail(BaseModel):
-    comparison_operator: ComparisonOperator = Field(
+    operator: ComparisonOperator = Field(
         ...,
         description="Comparison operator used to evaluate the condition"
     )
@@ -16,17 +17,22 @@ class ConditionDetail(BaseModel):
         description="Value to compare against"
     )
 
-    right: str = Field(
+    right: Any = Field(
         ...,
         description="Value to compare with"
     )
 
+    input_type: ValueInputType = Field(
+        ...,
+        description="Value input type for comparison"
+    )
+
 
 class ConditionBranchConfig(BaseModel):
     """Configuration for a conditional branch"""
 
     logical_operator: LogicOperator = Field(
-        default=LogicOperator.AND.value,
+        default=LogicOperator.AND,
         description="Logical operator used to combine multiple condition expressions"
     )
 

api/app/core/workflow/nodes/if_else/node.py

@@ -1,10 +1,11 @@
 import logging
+import re
 from typing import Any
 
 from app.core.workflow.nodes.base_node import BaseNode, WorkflowState
+from app.core.workflow.nodes.enums import ComparisonOperator, LogicOperator
 from app.core.workflow.nodes.if_else import IfElseNodeConfig
-from app.core.workflow.nodes.if_else.config import ConditionDetail
-from app.core.workflow.nodes.operators import ConditionExpressionBuilder
+from app.core.workflow.nodes.operators import ConditionExpressionResolver, CompareOperatorInstance
 
 logger = logging.getLogger(__name__)
 
@@ -15,30 +16,36 @@ class IfElseNode(BaseNode):
         self.typed_config = IfElseNodeConfig(**self.config)
 
     @staticmethod
-    def _build_condition_expression(
-            condition: ConditionDetail,
-    ) -> str:
-        """
-        Build a single boolean condition expression string.
+    def _evaluate(operator, instance: CompareOperatorInstance) -> Any:
+        match operator:
+            case ComparisonOperator.EMPTY:
+                return instance.empty()
+            case ComparisonOperator.NOT_EMPTY:
+                return instance.not_empty()
+            case ComparisonOperator.CONTAINS:
+                return instance.contains()
+            case ComparisonOperator.NOT_CONTAINS:
+                return instance.not_contains()
+            case ComparisonOperator.START_WITH:
+                return instance.startswith()
+            case ComparisonOperator.END_WITH:
+                return instance.endswith()
+            case ComparisonOperator.EQ:
+                return instance.eq()
+            case ComparisonOperator.NE:
+                return instance.ne()
+            case ComparisonOperator.LT:
+                return instance.lt()
+            case ComparisonOperator.LE:
+                return instance.le()
+            case ComparisonOperator.GT:
+                return instance.gt()
+            case ComparisonOperator.GE:
+                return instance.ge()
+            case _:
+                raise ValueError(f"Invalid condition: {operator}")
 
-        This method does NOT evaluate the condition.
-        It only generates a valid Python boolean expression string
-        (e.g. "x > 10", "'a' in name") that can later be used
-        in a conditional edge or evaluated by the workflow engine.
-
-        Args:
-            condition (ConditionDetail): Definition of a single comparison condition.
-
-        Returns:
-            str: A Python boolean expression string.
-        """
-        return ConditionExpressionBuilder(
-            left=condition.left,
-            operator=condition.comparison_operator,
-            right=condition.right
-        ).build()
-
-    def build_conditional_edge_expressions(self) -> list[str]:
+    def evaluate_conditional_edge_expressions(self, state) -> list[bool]:
         """
         Build conditional edge expressions for the If-Else node.
 
@@ -60,19 +67,28 @@ class IfElseNode(BaseNode):
 
         for case_branch in self.typed_config.cases:
             branch_index += 1
-
-            branch_conditions = [
-                self._build_condition_expression(condition)
-                for condition in case_branch.expressions
-            ]
-            if len(branch_conditions) > 1:
-                combined_condition = f' {case_branch.logical_operator} '.join(branch_conditions)
+            branch_result = []
+            for expression in case_branch.expressions:
+                pattern = r"\{\{\s*(.*?)\s*\}\}"
+                left_string = re.sub(pattern, r"\1", expression.left).strip()
+                left_value = self.get_variable(left_string, state)
+                evaluator = ConditionExpressionResolver.resolve_by_value(left_value)(
+                    self.get_variable_pool(state),
+                    expression.left,
+                    expression.right,
+                    expression.input_type
+                )
+                branch_result.append(self._evaluate(expression.operator, evaluator))
+            if case_branch.logical_operator == LogicOperator.AND:
+                conditions.append(all(branch_result))
             else:
-                combined_condition = branch_conditions[0]
-            conditions.append(combined_condition)
+                condition_res = any(branch_result)
+                conditions.append(condition_res)
+                if condition_res:
+                    return conditions
 
         # Default fallback branch
-        conditions.append("True")
+        conditions.append(True)
 
         return conditions
 
@@ -90,10 +106,10 @@ class IfElseNode(BaseNode):
         Returns:
             str: The matched branch identifier, e.g., 'CASE1', 'CASE2', ..., used for node transitions.
         """
-        expressions = self.build_conditional_edge_expressions()
+        expressions = self.evaluate_conditional_edge_expressions(state)
+        # TODO: 变量类型及文本类型解析
         for i in range(len(expressions)):
-            logger.info(expressions[i])
-            if self._evaluate_condition(expressions[i], state):
+            if expressions[i]:
                 logger.info(f"Node {self.node_id}: switched to branch CASE {i + 1}")
                 return f'CASE{i + 1}'
         return f'CASE{len(expressions)}'

api/app/core/workflow/nodes/jinja_render/node.py

@@ -8,6 +8,7 @@ from app.core.workflow.template_renderer import TemplateRenderer
 
 logger = logging.getLogger(__name__)
 
+
 class JinjaRenderNode(BaseNode):
     def __init__(self, node_config: dict[str, Any], workflow_config: dict[str, Any]):
         super().__init__(node_config, workflow_config)

api/app/core/workflow/nodes/operators.py

@@ -1,10 +1,73 @@
+import json
+import re
 from abc import ABC
-from typing import Union, Type
+from typing import Union, Type, NoReturn
 
-from app.core.workflow.nodes.enums import ComparisonOperator
+from app.core.workflow.nodes.base_config import VariableType
+from app.core.workflow.nodes.enums import ValueInputType
 from app.core.workflow.variable_pool import VariablePool
 
 
+class TypeTransformer:
+    @classmethod
+    def _fail(cls, value, target) -> NoReturn:
+        raise TypeError(f"Cannot convert {value!r} to {target} type")
+
+    @classmethod
+    def _json_load(cls, value, target):
+        try:
+            return json.loads(value)
+        except Exception:
+            cls._fail(value, target)
+
+    @classmethod
+    def transform(cls, variable_literal: str | bool, target_type: VariableType):
+        match target_type:
+            case VariableType.STRING:
+                return str(variable_literal)
+
+            case VariableType.NUMBER:
+                for caster in (int, float):
+                    try:
+                        return caster(variable_literal)
+                    except Exception:
+                        pass
+                cls._fail(variable_literal, target_type)
+
+            case VariableType.BOOLEAN:
+                if isinstance(variable_literal, bool):
+                    return variable_literal
+                cls._fail(variable_literal, target_type)
+
+            case VariableType.OBJECT:
+                obj = cls._json_load(variable_literal, target_type)
+                if isinstance(obj, dict):
+                    return obj
+                cls._fail(variable_literal, target_type)
+
+            case VariableType.ARRAY_BOOLEAN:
+                return cls._parse_list(variable_literal, bool, target_type)
+
+            case VariableType.ARRAY_NUMBER:
+                return cls._parse_list(variable_literal, (int, float), target_type)
+
+            case VariableType.ARRAY_STRING:
+                return cls._parse_list(variable_literal, str, target_type)
+
+            case VariableType.ARRAY_OBJECT:
+                return cls._parse_list(variable_literal, dict, target_type)
+
+            case _:
+                raise TypeError("Invalid type")
+
+    @classmethod
+    def _parse_list(cls, value, item_type, target):
+        arr = cls._json_load(value, target)
+        if isinstance(arr, list) and all(isinstance(i, item_type) for i in arr):
+            return arr
+        cls._fail(value, target)
+
+
 class OperatorBase(ABC):
     def __init__(self, pool: VariablePool, left_selector, right):
         self.pool = pool
@@ -19,7 +82,9 @@ class OperatorBase(ABC):
             raise TypeError(f"The variable to be operated on must be of {self.type_limit} type")
 
         if not no_right and not isinstance(self.right, self.type_limit):
-            raise TypeError(f"The value assigned to the string variable must also be of {self.type_limit} type")
+            raise TypeError(
+                f"The value assigned must be of {self.type_limit} type"
+            )
 
 
 class StringOperator(OperatorBase):
@@ -126,7 +191,7 @@ class ArrayOperator(OperatorBase):
 class ObjectOperator(OperatorBase):
     def __init__(self, pool: VariablePool, left_selector, right):
         super().__init__(pool, left_selector, right)
-        self.type_limit = object
+        self.type_limit = dict
 
     def assign(self) -> None:
         self.check()
@@ -138,20 +203,21 @@ class ObjectOperator(OperatorBase):
 
 
 class AssignmentOperatorResolver:
+    OPERATOR_MAP = {
+        str: StringOperator,
+        bool: BooleanOperator,
+        int: NumberOperator,
+        float: NumberOperator,
+        list: ArrayOperator,
+        dict: ObjectOperator,
+    }
+
     @classmethod
     def resolve_by_value(cls, value):
-        if isinstance(value, str):
-            return StringOperator
-        elif isinstance(value, bool):
-            return BooleanOperator
-        elif isinstance(value, (int, float)):
-            return NumberOperator
-        elif isinstance(value, list):
-            return ArrayOperator
-        elif isinstance(value, dict):
-            return ObjectOperator
-        else:
-            raise TypeError(f"Unsupported variable type: {type(value)}")
+        for t, op in cls.OPERATOR_MAP.items():
+            if isinstance(value, t):
+                return op
+        raise TypeError(f"Unsupported variable type: {type(value)}")
 
 
 AssignmentOperatorInstance = Union[
@@ -164,81 +230,186 @@ AssignmentOperatorInstance = Union[
 AssignmentOperatorType = Type[AssignmentOperatorInstance]
 
 
-class ConditionExpressionBuilder:
-    """
-    Build a Python boolean expression string based on a comparison operator.
+class ConditionBase(ABC):
+    type_limit: type[str, int, dict, list] = None
 
-    This class does not evaluate the expression.
-    It only generates a valid Python expression string
-    that can be evaluated later in a workflow context.
-    """
+    def __init__(
+            self,
+            pool: VariablePool,
+            left_selector,
+            right_selector: str,
+            input_type: ValueInputType
+    ):
+        self.pool = pool
+        self.left_selector = left_selector
+        self.right_selector = right_selector
+        self.input_type = input_type
 
-    def __init__(self, left: str, operator: ComparisonOperator, right: str):
-        self.left = left
-        self.operator = operator
-        self.right = right
+        self.left_value = self.pool.get(self.left_selector)
+        self.right_value = self.resolve_right_literal_value()
 
-    def _empty(self):
-        return f"{self.left} == ''"
+        self.type_limit = getattr(self, "type_limit", None)
 
-    def _not_empty(self):
-        return f"{self.left} != ''"
+    def resolve_right_literal_value(self):
+        if self.input_type == ValueInputType.VARIABLE:
+            pattern = r"\{\{\s*(.*?)\s*\}\}"
+            right_expression = re.sub(pattern, r"\1", self.right_selector).strip()
+            return self.pool.get(right_expression)
+        elif self.input_type == ValueInputType.CONSTANT:
+            return self.right_selector
+        raise RuntimeError("Unsupported variable type")
 
-    def _contains(self):
-        return f"{self.right} in {self.left}"
+    def check(self, no_right=False):
+        left = self.pool.get(self.left_selector.variable_selector)
+        if not isinstance(left, self.type_limit):
+            raise TypeError(f"The variable to be compared on must be of {self.type_limit} type")
+        if not no_right:
+            right = self.resolve_right_literal_value()
+            if not isinstance(right, self.type_limit):
+                raise TypeError(
+                    f"The compared variable must be of {self.type_limit} type"
+                )
 
-    def _not_contains(self):
-        return f"{self.right} not in {self.left}"
 
-    def _startswith(self):
-        return f'{self.left}.startswith({self.right})'
+class StringComparisonOperator(ConditionBase):
+    type_limit = str
 
-    def _endswith(self):
-        return f'{self.left}.endswith({self.right})'
+    def __init__(self, pool: VariablePool, left_selector, right_selector, input_type):
+        super().__init__(pool, left_selector, right_selector, input_type)
 
-    def _eq(self):
-        return f"{self.left} == {self.right}"
+    def empty(self):
+        self.check(no_right=True)
+        return self.left_value == ""
 
-    def _ne(self):
-        return f"{self.left} != {self.right}"
+    def not_empty(self):
+        return not self.empty()
 
-    def _lt(self):
-        return f"{self.left} < {self.right}"
+    def contains(self):
+        self.check()
+        return self.right_value in self.left_value
 
-    def _le(self):
-        return f"{self.left} <= {self.right}"
+    def not_contains(self):
+        return self.right_value not in self.left_value
 
-    def _gt(self):
-        return f"{self.left} > {self.right}"
+    def startswith(self):
+        self.check()
+        return self.left_value.startswith(self.right_value)
 
-    def _ge(self):
-        return f"{self.left} >= {self.right}"
+    def endswith(self):
+        return self.left_value.endswith(self.right_value)
 
-    def build(self):
-        match self.operator:
-            case ComparisonOperator.EMPTY:
-                return self._empty()
-            case ComparisonOperator.NOT_EMPTY:
-                return self._not_empty()
-            case ComparisonOperator.CONTAINS:
-                return self._contains()
-            case ComparisonOperator.NOT_CONTAINS:
-                return self._not_contains()
-            case ComparisonOperator.START_WITH:
-                return self._startswith()
-            case ComparisonOperator.END_WITH:
-                return self._endswith()
-            case ComparisonOperator.EQ:
-                return self._eq()
-            case ComparisonOperator.NE:
-                return self._ne()
-            case ComparisonOperator.LT:
-                return self._lt()
-            case ComparisonOperator.LE:
-                return self._le()
-            case ComparisonOperator.GT:
-                return self._gt()
-            case ComparisonOperator.GE:
-                return self._ge()
-            case _:
-                raise ValueError(f"Invalid condition: {self.operator}")
+    def eq(self):
+        return self.left_value == self.right_value
+
+    def ne(self):
+        return self.left_value != self.right_value
+
+
+class NumberComparisonOperator(ConditionBase):
+    type_limit = (int, float)
+
+    def __init__(self, pool: VariablePool, left_selector, right_selector, input_type):
+        super().__init__(pool, left_selector, right_selector, input_type)
+
+    def empty(self):
+        return self.left_value == 0
+
+    def not_empty(self):
+        return self.left_value != 0
+
+    def eq(self):
+        return self.left_value == self.right_value
+
+    def ne(self):
+        return self.left_value != self.right_value
+
+    def lt(self):
+        return self.left_value < self.right_value
+
+    def le(self):
+        return self.left_value <= self.right_value
+
+    def gt(self):
+        return self.left_value > self.right_value
+
+    def ge(self):
+        return self.left_value >= self.right_value
+
+
+class BooleanComparisonOperator(ConditionBase):
+    type_limit = bool
+
+    def __init__(self, pool: VariablePool, left_selector, right_selector, input_type):
+        super().__init__(pool, left_selector, right_selector, input_type)
+
+    def eq(self):
+        return self.left_value == self.right_value
+
+    def ne(self):
+        return self.left_value != self.right_value
+
+
+class ObjectComparisonOperator(ConditionBase):
+    type_limit = dict
+
+    def __init__(self, pool: VariablePool, left_selector, right_selector, input_type):
+        super().__init__(pool, left_selector, right_selector, input_type)
+
+    def eq(self):
+        return self.left_value == self.right_value
+
+    def ne(self):
+        return self.left_value != self.right_value
+
+    def empty(self):
+        return not self.left_value
+
+    def not_empty(self):
+        return bool(self.left_value)
+
+
+class ArrayComparisonOperator(ConditionBase):
+    type_limit = list
+
+    def __init__(self, pool: VariablePool, left_selector, right_selector, input_type):
+        super().__init__(pool, left_selector, right_selector, input_type)
+
+    def empty(self):
+        return not self.left_value
+
+    def not_empty(self):
+        return bool(self.left_value)
+
+    def contains(self):
+        return self.right_value in self.left_value
+
+    def not_contains(self):
+        return self.right_value not in self.left_value
+
+
+CompareOperatorInstance = Union[
+    StringComparisonOperator,
+    NumberComparisonOperator,
+    BooleanComparisonOperator,
+    ArrayComparisonOperator,
+    ObjectComparisonOperator
+]
+CompareOperatorType = Type[CompareOperatorInstance]
+
+
+class ConditionExpressionResolver:
+    CONDITION_OPERATOR_MAP = {
+        str: StringComparisonOperator,
+        bool: BooleanComparisonOperator,
+        int: NumberComparisonOperator,
+        float: NumberComparisonOperator,
+        list: ArrayComparisonOperator,
+        dict: ObjectComparisonOperator,
+    }
+
+    @classmethod
+    def resolve_by_value(cls, value) -> CompareOperatorType:
+        for t, op in cls.CONDITION_OPERATOR_MAP.items():
+            if isinstance(value, t):
+                return op
+        raise TypeError(f"Unsupported variable type: {type(value)}")

api/app/core/workflow/nodes/question_classifier/node.py

@@ -15,29 +15,29 @@ logger = logging.getLogger(__name__)
 
 class QuestionClassifierNode(BaseNode):
     """问题分类器节点"""
-    
+
     def __init__(self, node_config: dict[str, Any], workflow_config: dict[str, Any]):
         super().__init__(node_config, workflow_config)
         self.typed_config = QuestionClassifierNodeConfig(**self.config)
-    
+
     def _get_llm_instance(self) -> RedBearLLM:
         """获取LLM实例"""
         with get_db_read() as db:
             config = ModelConfigService.get_model_by_id(db=db, model_id=self.typed_config.model_id)
-            
+
             if not config:
                 raise BusinessException("配置的模型不存在", BizCode.NOT_FOUND)
-            
+
             if not config.api_keys or len(config.api_keys) == 0:
                 raise BusinessException("模型配置缺少 API Key", BizCode.INVALID_PARAMETER)
-            
+
             api_config = config.api_keys[0]
             model_name = api_config.model_name
             provider = api_config.provider
             api_key = api_config.api_key
             base_url = api_config.api_base
             model_type = config.type
-        
+
         return RedBearLLM(
             RedBearModelConfig(
                 model_name=model_name,
@@ -47,7 +47,7 @@ class QuestionClassifierNode(BaseNode):
             ),
             type=ModelType(model_type)
         )
-    
+
     async def execute(self, state: WorkflowState) -> dict[str, Any]:
         """执行问题分类"""
         question = self.typed_config.input_variable
@@ -55,15 +55,15 @@ class QuestionClassifierNode(BaseNode):
         supplement_prompt = ""
         if self.typed_config.user_supplement_prompt is not None:
             supplement_prompt = self.typed_config.user_supplement_prompt
-        
+
         category_names = [class_item.class_name for class_item in self.typed_config.categories]
-        
+
         if not question:
             logger.warning(f"节点 {self.node_id} 未获取到输入问题")
             return {self.typed_config.output_variable: category_names[0] if category_names else "unknown"}
-        
+
         llm = self._get_llm_instance()
-        
+
         # 渲染用户提示词模板，支持工作流变量
         user_prompt = self._render_template(
             self.typed_config.user_prompt.format(
@@ -73,15 +73,15 @@ class QuestionClassifierNode(BaseNode):
             ),
             state
         )
-        
+
         messages = [
             ("system", self.typed_config.system_prompt),
             ("user", user_prompt),
         ]
-        
+
         response = await llm.ainvoke(messages)
         result = response.content.strip()
-        
+
         if result in category_names:
             category = result
         else:
@@ -90,5 +90,5 @@ class QuestionClassifierNode(BaseNode):
 
         log_supplement = supplement_prompt if supplement_prompt else "无"
         logger.info(f"节点 {self.node_id} 分类结果: {category}, 用户补充提示词：{log_supplement}")
-        
-        return {self.typed_config.output_variable: category}
+
+        return {self.typed_config.output_variable: category}

api/app/core/workflow/nodes/variable_aggregator/__init__.py

@@ -1,4 +1,4 @@
 from app.core.workflow.nodes.variable_aggregator.config import VariableAggregatorNodeConfig
 from app.core.workflow.nodes.variable_aggregator.node import VariableAggregatorNode
 
-__all__ = ["VariableAggregatorNode", "VariableAggregatorNodeConfig"]
+__all__ = ["VariableAggregatorNode", "VariableAggregatorNodeConfig"]