/// <summary>
/// 用于初始化的策略执行器，就是在程序运行期间只执行一次，除非sql的配置数据发生了改变（例如：替换表名 / 合并分部sql等的执行器）
/// </summary>
/// <param name="info"></param>
/// <returns></returns>
protected void DoSqlInitPolicyExecutors(IDictionary <string, ISqlConfigPolicy> policies,
IPolicyExecutorInfo info)
{
var pinfo = (ISqlInitPolicyExecutorInfo)info;
ISqlConfigPolicy policy = null;
if (policies?.Count > 0)
{
foreach (var pair in _sqlInitPolicyExecutorsOrder)
{
info.PolicyName = pair.Key;
//全局的策略对象
_globalPolicies.TryGetValue(pair.Key, out policy);
info.GlobalPolicy = policy;
//获取通过方法形参传递过来的策略对象
policies.TryGetValue(pair.Key, out policy);
info.ParameterPolicy = policy;
pair.Value.Item2.Invoke().Execute(pinfo);
}
}
else
{
info.ParameterPolicy = null;
foreach (var pair in _sqlInitPolicyExecutorsOrder)
{
info.PolicyName = pair.Key;
//全局的策略对象
_globalPolicies.TryGetValue(pair.Key, out policy);
info.GlobalPolicy = policy;
pair.Value.Item2.Invoke().Execute(pinfo);
}
}
}
/// <summary>
/// 执行相关的策略执行器
/// </summary>
public void InvokeExecutors(IDictionary <string, ISqlConfigPolicy> policies,
IPolicyExecutorInfo info, Type executorInfoBaseType)
{
if (executorInfoBaseType == _tISqlInitPolicyExecutorInfo)
{
//在策略执行之前进行相应的初始化操作（优先级排序）
_sqlInitPolicyExecutorsOrderInit.Invoke(-1);
DoSqlInitPolicyExecutors(policies, info);
}
else if (executorInfoBaseType == _tISqlPreExecutePolicyExecutorInfo)
{
_sqlPreExecutePolicyExecutorsOrderInit.Invoke(-1);
DoSqlPreExecutePolicyExecutors(policies, info);
}
else if (executorInfoBaseType == _tISqlExecutePolicyExecutorInfo)
{
_sqlExecutePolicyExecutorsOrderInit.Invoke(-1);
DoSqlExecutePolicyExecutors(policies, info);
}
else
{
throw new ArgumentException($"Invalid type [{info.GetType().FullName}]", nameof(info));
}
}