public IList<MetaTableInfo> Load()
{
var tables = new List<MetaTableInfo>();
using (var binaryReader = new BinaryReader(new FileStream(this.MetaFileName, FileMode.Open, FileAccess.Read, FileShare.Read)))
{
var tableCount = binaryReader.ReadInt32();
for (int i = 0; i < tableCount; i++)
{
var tableGUID = binaryReader.ReadStringMM();
var tableName = binaryReader.ReadStringMM();
var filePath = binaryReader.ReadStringMM();
var fieldCount = binaryReader.ReadInt32();
var fields = new List<MetaFieldInfo>();
for (int j = 0; j < fieldCount; j++)
{
var fieldInfo = new MetaFieldInfo();
fieldInfo.FieldName = binaryReader.ReadStringMM();
fields.Add(fieldInfo);
}
var table = new MetaTableInfo(fields);
table.TableGUID = tableGUID;
table.TableName = tableName;
table.FilePath = filePath;
table.InitializeAccess = false;
tables.Add(table);
}
}
return tables;
}
internal ObjectTable(TableAccessLock tal, MetaTableInfo metaTableInfo)
{
System.Diagnostics.Debug.Assert(tal != null);
System.Diagnostics.Debug.Assert(metaTableInfo != null);
//
// 每一个数据表需要持有一个数据库分配的锁对象，来确保在全局范围内对该表的操作不会导致
// 多线程错误
//
this.TAL = tal;
this.MetaTableInfo = metaTableInfo;
}
private TableContext AddNewTable(MetaTableInfo table)
{
var tableContext = new TableContext();
tableContext.MTTable = table;
tableContext.RTTable = new RTTableInfo();
tableContext.RTTable.IsAccessInitialized = false;
tableContext.RTTable.TableStream = null;
tableContext.RTTable.AccessLock = new TableAccessLock();
this.MetaTableMap.Add(table.TableName, tableContext);
this.RTTables.Add(tableContext);
return(tableContext);
}
public IList <MetaTableInfo> Load()
{
var tables = new List <MetaTableInfo>();
using (var binaryReader = new BinaryReader(new FileStream(this.MetaFileName, FileMode.Open, FileAccess.Read, FileShare.Read)))
{
var tableCount = binaryReader.ReadInt32();
for (int i = 0; i < tableCount; i++)
{
var tableGUID = binaryReader.ReadStringMM();
var tableName = binaryReader.ReadStringMM();
var filePath = binaryReader.ReadStringMM();
var fieldCount = binaryReader.ReadInt32();
var fields = new List <MetaFieldInfo>();
for (int j = 0; j < fieldCount; j++)
{
var fieldInfo = new MetaFieldInfo();
fieldInfo.FieldName = binaryReader.ReadStringMM();
fields.Add(fieldInfo);
}
var table = new MetaTableInfo(fields);
table.TableGUID = tableGUID;
table.TableName = tableName;
table.FilePath = filePath;
table.InitializeAccess = false;
tables.Add(table);
}
}
return(tables);
}
internal DataCollection(MetaTableInfo metaTableInfo)
{
System.Diagnostics.Debug.Assert(metaTableInfo != null);
this.MetaTableInfo = metaTableInfo;
}
private MetaTableInfo CreateNewTable(Type tableType)
{
//
// 根据指定的类型，创建一个新的数据表，并添加到数据表集合，存储到数据库元数据信息文件中。
//
// 需要为table 的index 赋值
var properties = tableType.GetProperties(BindingFlags.DeclaredOnly);
var fields = new List <MetaFieldInfo>();
var tableGUID = string.Empty;
foreach (var propertyInfo in properties)
{
//
// 能够作为实体字段的属性必须是可读，可写，并且支持的基础类型。
//
if (propertyInfo.CanRead && propertyInfo.CanWrite && IsTypeSupport(propertyInfo.PropertyType))
{
var field = new MetaFieldInfo
{
FieldName = propertyInfo.Name,
FieldPropertyInfo = propertyInfo
};
fields.Add(field);
tableGUID += propertyInfo.Name + "-";
}
}
if (fields.Count == 0)
{
throw new ArgumentException("Entity type [" + tableType.FullName + "] is not persistable.");
}
var table = new MetaTableInfo(fields);
table.TableName = tableType.FullName;
table.TableGUID = tableGUID;
//
// 配置对象生成完成，开始生成对应的文件信息
//
table.FilePath = table.TableName + "_meta.hd";
var tableMetaFilePath = Path.Combine(Path.GetDirectoryName(this.Config.DatabaseMetaFileName), table.FilePath);
if (File.Exists(tableMetaFilePath))
{
File.Delete(tableMetaFilePath);
}
using (var binaryWriter = new BinaryWriter(File.Create(tableMetaFilePath)))
{
binaryWriter.Write(0);
}
return(table);
}