private void CreateQueryFieldWhereSql(ConditionValueGeneratorPara para, Dictionary <string, string> tableAliaNameDic,
Dictionary <string, Dictionary <string, DBFieldInfo> > tableFieldInfoDic, ExpressionNodeCollection conditionExpressionNodes,
DBFiledValueConverterCollection dbFiledValueConverterCollection)
{
if (conditionExpressionNodes == null || conditionExpressionNodes.Count == 0)
{
return;
}
ExpressionNodeCollection childrenConditionExpressionNodes;
DBFieldInfo dbFieldInfo;
CompareOperaterAttribute compareOperaterAttribute;
int lastIndex = conditionExpressionNodes.Count - 1;
for (int i = 0; i < conditionExpressionNodes.Count; i++)
{
var expressionNode = conditionExpressionNodes.ElementAt(i);
childrenConditionExpressionNodes = expressionNode.Children;
if (childrenConditionExpressionNodes == null || childrenConditionExpressionNodes.Count == 0)
{
//无子节点
dbFieldInfo = tableFieldInfoDic[expressionNode.TableName][expressionNode.FieldName];
para.DBFiledValueConverter = dbFiledValueConverterCollection.GetDBFiledValueConverter(dbFieldInfo);
para.FieldInfo = dbFieldInfo;
if (tableAliaNameDic.ContainsKey(expressionNode.TableName))
{
para.TableAliaName = tableAliaNameDic[expressionNode.TableName];
}
else
{
para.TableAliaName = expressionNode.TableName;
}
para.ValueList = expressionNode.ValueList;
para.Operater = expressionNode.Operater;
compareOperaterAttribute = CompareOperaterHelper.GetCompareOperaterAttributeByCompareOperater(expressionNode.Operater);
compareOperaterAttribute.ConditionValueGenerator.Generate(para);
if (i < lastIndex)
{
para.SqlStringBuilder.Append(DBConstant.BLACK_SPACE);
para.SqlStringBuilder.Append(conditionExpressionNodes.LogicOperaters.ToString());
para.SqlStringBuilder.Append(DBConstant.BLACK_SPACE);
}
}
else
{
//有子节点
para.SqlStringBuilder.Append('(');
this.CreateQueryFieldWhereSql(para, tableAliaNameDic, tableFieldInfoDic,
childrenConditionExpressionNodes, dbFiledValueConverterCollection);
para.SqlStringBuilder.Append(')');
}
}
}
/// <summary>
/// 转换为带参数where语句
/// </summary>
/// <param name="tableFieldInfoDic">表字段字典集合[key:表名;value:[key:字段名;value:DBFieldInfo]]</param>
/// <param name="tableAliaNameDic">表别名字典集合[key:列名;value:别名]</param>
/// <param name="filedValueConverterCollection">数据库字段值转换对象集合</param>
/// <param name="paraSign">SQL参数符号字符串</param>
/// <param name="parameterIndex">参数索引</param>
/// <param name="parameterNameValueDic">参数名名称及对应的值字典集合[key:参数名称,含参数符号;value:参数值]</param>
/// <returns>where语句</returns>
public string ToWhere(Dictionary <string, Dictionary <string, DBFieldInfo> > tableFieldInfoDic,
Dictionary <string, string> tableAliaNameDic, DBFiledValueConverterCollection filedValueConverterCollection,
string paraSign, ref int parameterIndex, out Dictionary <string, object> parameterNameValueDic)
{
var sbSql = new StringBuilder();
parameterNameValueDic = new Dictionary <string, object>();
var para = new ConditionValueGeneratorPara(sbSql, paraSign, parameterIndex, parameterNameValueDic);
this.CreateQueryFieldWhereSql(para, tableAliaNameDic, tableFieldInfoDic, this, filedValueConverterCollection);
parameterIndex = para.GetParameterIndex();
return(sbSql.ToString());
}
