/// <summary>
/// 从数据库类创建描述类
/// </summary>
/// <param name="type"></param>
/// <param name="clsLoader"></param>
/// <returns></returns>
public static ClassDesc CreateClassDesc(Type type, DbClassLoader dbClsLoader)
{
ClassDesc clsDesc = new ClassDesc();
clsDesc.classType = type;
if (!type.IsDefined(typeof(DbTableAttribute), false))
{
// 数据库类需要定义DbTableAttribute
Debug.LogError(string.Format("Missing table name {0}", type.ToString()));
}
else
{
// 获取表名
var atbAyy = type.GetCustomAttributes(typeof(DbTableAttribute), false);
if (atbAyy.Length != 0)
{
var atb = atbAyy[0] as DbTableAttribute;
clsDesc.tableName = atb.TableName;
clsDesc.className = atb.ClassName;
clsDesc.toClassName = atb.ToClassName;
clsDesc.toNameStr = atb.ToNameStr;
}
}
// 分析属性, 同时需要分析基类的属性
var currentType = type;
while (currentType != null && currentType != typeof(object))
{
CollectPropertyInfo(currentType.GetProperties(), clsDesc, dbClsLoader);
currentType = currentType.BaseType;
}
return(clsDesc);
}
private static void CollectPropertyInfo(PropertyInfo[] piArr, ClassDesc clsDesc, DbClassLoader dbClsLoader)
{
for (int i = 0; i < piArr.Length; i++)
{
PropertyInfo pi = piArr[i];
object[] atbArr = pi.GetCustomAttributes(typeof(DbColumnAttribute), false);
object[] splitAtbArr = pi.GetCustomAttributes(typeof(DbSplitColumnAttribute), false);
object[] splitRangeAtbArr = pi.GetCustomAttributes(typeof(DbSplitRangeAttribute), false);
object[] mergeAtbArr = pi.GetCustomAttributes(typeof(DbMergeColumnAttribute), false);
if (atbArr.Length != 0)
{
// 检测和获取主键列信息
var atb = atbArr[0] as DbColumnAttribute;
if (atb.KeyColumn)
{
// 主键一定不是外键
if (atb.IsForeignKey)
{
throw new Exception("Pk can't be foreign key.");
}
// 只有一个主键
if (clsDesc.keyAttribute != null)
{
Debug.LogError(string.Format("Key column already exist {0}", atb.ColumnName));
}
else
{
clsDesc.keyAttribute = atb;
}
}
if (atb.IsForeignKey)
{
// 保存外键信息
var foreignKeyPropertyDesc = new ForeignKeyPropertyDesc();
foreignKeyPropertyDesc.attribute = atb;
foreignKeyPropertyDesc.propertyInfo = pi;
var refClsDesc = dbClsLoader.GetClassDesc(atb.ReferencedClass);
foreignKeyPropertyDesc.referencedPropertyInfo = refClsDesc.GetPropertyInfo(atb.ReferencedColumn).propertyInfo;
clsDesc.rootKeyAttribute = atb;
clsDesc.fkPropertyInfoList.Add(foreignKeyPropertyDesc);
}
if (clsDesc.propertyInfoDic.ContainsKey(atb.ColumnName))
{
Debug.LogWarning(string.Format("Duplicated column name {0}", atb.ColumnName));
}
else
{
var propertyDesc = new PropertyDesc();
propertyDesc.attribute = atb;
propertyDesc.propertyInfo = pi;
clsDesc.propertyInfoDic.Add(atb.ColumnName, propertyDesc);
}
continue;
}
else if (splitAtbArr.Length != 0)
{
var splitAtb = splitAtbArr[0] as DbSplitColumnAttribute;
if (clsDesc.splitPropertyInfoDic.ContainsKey(splitAtb.ColumnName))
{
Debug.LogWarning(string.Format("Duplicated column name {0}", splitAtb.ColumnName));
}
else
{
var propertyDesc = new SplitPropertyDesc();
propertyDesc.splitAttribute = splitAtb;
propertyDesc.propertyInfo = pi;
clsDesc.splitPropertyInfoDic.Add(splitAtb.ColumnName, propertyDesc);
}
continue;
}
else if (mergeAtbArr.Length != 0)
{
var mergeAtb = mergeAtbArr[0] as DbMergeColumnAttribute;
if (clsDesc.mergePropertyInfoDic.ContainsKey(mergeAtb.FieldTypeName))
{
Debug.LogWarning(string.Format("Duplicated column name {0}", mergeAtb.FieldTypeName));
}
else
{
var propertyDesc = new MergePropertyDesc();
propertyDesc.mergeAttribute = mergeAtb;
propertyDesc.propertyInfo = pi;
clsDesc.mergePropertyInfoDic.Add(mergeAtb.FieldTypeName, propertyDesc);
}
continue;
}
else if (splitRangeAtbArr.Length != 0)
{
var splitRangeAtb = splitRangeAtbArr[0] as DbSplitRangeAttribute;
if (clsDesc.splitRangePropertyInfoDic.ContainsKey(splitRangeAtb.ColumnName))
{
Debug.LogWarning(string.Format("Duplicated column name {0}", splitRangeAtb.ColumnName));
}
else
{
var propertyDesc = new SplitRangePropertyDesc();
propertyDesc.rangeAttribute = splitRangeAtb;
propertyDesc.propertyInfo = pi;
clsDesc.splitRangePropertyInfoDic.Add(splitRangeAtb.ColumnName, propertyDesc);
}
}
// 获取子表信息
atbArr = pi.GetCustomAttributes(typeof(DbColumnSubTableAttribute), false);
if (atbArr.Length != 0)
{
var atb = atbArr[0] as DbColumnSubTableAttribute;
var subTablePropertyDesc = new SubTablePropertyDesc();
subTablePropertyDesc.attribute = atb;
subTablePropertyDesc.propertyInfo = pi;
clsDesc.subTablePropertyDescList.Add(subTablePropertyDesc);
continue;
}
}
}