Class SimpleDecisionTable

java.lang.Object
cloud.opencode.base.rules.decision.SimpleDecisionTable
All Implemented Interfaces:
DecisionTable
public class SimpleDecisionTable extends Object implements DecisionTable
Simple Decision Table Implementation 简单决策表实现

A basic implementation of DecisionTable for simple rule scenarios.

用于简单规则场景的DecisionTable基本实现。

Features | 主要功能:

  • Condition syntax support (wildcards, comparisons, equality) - 条件语法支持（通配符、比较、相等）
  • Multiple hit policy support - 多种命中策略支持
  • Context and map-based evaluation - 基于上下文和Map的评估

Usage Examples | 使用示例:

SimpleDecisionTable table = new SimpleDecisionTable(
    "pricing", HitPolicy.FIRST,
    List.of("type"), List.of("discount"),
    List.of(new Object[]{"VIP"}),
    List.of(new Object[]{0.15})
);
DecisionResult result = table.evaluate(Map.of("type", "VIP"));

Security | 安全性:

  • Thread-safe: No (mutable internal state) - 线程安全: 否（可变内部状态）
  • Null-safe: No (inputs must not be null) - 空值安全: 否（输入不能为null）
Since:
JDK 25, opencode-base-rules V1.0.0
Author:
Leon Soo www.LeonSoo.com
See Also:

  • Constructor Details

    • SimpleDecisionTable

      public SimpleDecisionTable(String name, HitPolicy hitPolicy, List<String> inputColumns, List<String> outputColumns, List<Object[]> inputConditions, List<Object[]> outputValues)
      Creates a simple decision table 创建简单决策表
      Parameters:
      name - the table name | 表名
      hitPolicy - the hit policy | 命中策略
      inputColumns - the input column names | 输入列名
      outputColumns - the output column names | 输出列名
      inputConditions - the input conditions for each row | 每行的输入条件
      outputValues - the output values for each row | 每行的输出值

  • Method Details

    • getName

      public String getName()
      Description copied from interface: DecisionTable
      Gets the decision table name 获取决策表名称
      Specified by:
      getName in interface DecisionTable
      Returns:
      the name | 名称

    • getHitPolicy

      public HitPolicy getHitPolicy()
      Description copied from interface: DecisionTable
      Gets the hit policy 获取命中策略
      Specified by:
      getHitPolicy in interface DecisionTable
      Returns:
      the hit policy | 命中策略

    • evaluate

      public DecisionResult evaluate(RuleContext context)
      Description copied from interface: DecisionTable
      Evaluates the decision table against the given context 针对给定上下文评估决策表
      Specified by:
      evaluate in interface DecisionTable
      Parameters:
      context - the rule context | 规则上下文
      Returns:
      the decision result | 决策结果

    • evaluate

      public DecisionResult evaluate(Map<String,Object> inputs)
      Description copied from interface: DecisionTable
      Evaluates the decision table against the given inputs 针对给定输入评估决策表
      Specified by:
      evaluate in interface DecisionTable
      Parameters:
      inputs - the input values | 输入值
      Returns:
      the decision result | 决策结果

    • getRowCount

      public int getRowCount()
      Description copied from interface: DecisionTable
      Gets the number of rows in the table 获取表中的行数
      Specified by:
      getRowCount in interface DecisionTable
      Returns:
      row count | 行数

    • getInputColumns

      public List<String> getInputColumns()
      Description copied from interface: DecisionTable
      Gets the input column names 获取输入列名
      Specified by:
      getInputColumns in interface DecisionTable
      Returns:
      input column names | 输入列名

    • getOutputColumns

      public List<String> getOutputColumns()
      Description copied from interface: DecisionTable
      Gets the output column names 获取输出列名
      Specified by:
      getOutputColumns in interface DecisionTable
      Returns:
      output column names | 输出列名