codeSmith实现ExtJS中Grid代码生成

新的项目中。要使用ExtJs，为了简单，写了这么一个简单的CodeSmith模板来根据数据库中的表生成Grid。

代码如下：

 

<%--  
Name: <%=  GetClassName(SourceTable)  %>
Author: sunfishlu
Description: 
--%>
<% @ CodeTemplate Language = " C# "  TargetLanguage = " JScript "  Description = " Generates a very simple business object. "  ResponseEncoding = " UTF-8 "   %>
<% @ Property Name = " NameSpace "  Type = " String "  Category = " Text "  Default = " Sunfishlu. "  Description = " The namespace to use for this class "   %>
<% @ Property Name = " SourceTable "  Type = " SchemaExplorer.TableSchema "  Category = " Context "  Description = " Table that the object is based on. "   %>
<% @ Assembly Name = " SchemaExplorer "   %>
<% @ Assembly Name = " System.Data "   %>
<% @ Import Namespace = " SchemaExplorer "   %>
<% @ Import Namespace = " System.Data "   %>

/* *
 * @author sunfish
  */

var  storeMain  =   new  Ext.data.Store({
    proxy: new  Ext.data.HttpProxy({
        url: ' <%= GetUrlName(SourceTable) %> '
    }),
    reader: new  Ext.data.JsonReader({
        root: ' data ' ,
        id: ' <%= SourceTable.PrimaryKey.MemberColumns[0].Name %> ' ,
        totalProperty: ' totalCount ' ,
        fields:
        [
             <%   for  ( int  i = 0 ; i  <  SourceTable.Columns.Count;  ++ i) {  %>   <%= GetMemberVariableName(SourceTable.Columns[i]) %><%   if  (i  <  SourceTable.Columns.Count  -   1 ) {  %> , <%  } %><% } %>
        ]
    }),
    remoteSort: true
});

Ext.onReady( function (){
    Ext.BLANK_IMAGE_URL  =   ' http://images.cnblogs.com/s.gif ' ;
    Ext.QuickTips.init();
     var  grid  =   new  Ext.grid.GridPanel({
        store:storeMain,
        columns:
        [
             new  Ext.grid.RowNumberer(),
            
             <%   for  ( int  i  =   0 ; i  <  SourceTable.Columns.Count; i ++ ) {  %>
            {header: " <%=GetHeaderName(SourceTable.Columns[i])%> " ,align: ' center ' ,sortable:  true ,dataIndex: <%= GetMemberVariableName(SourceTable.Columns[i]) %> } <%   if  (i  <  SourceTable.Columns.Count  -   1 ) {  %> , <%  }  %>                 
             <%  }  %>
        ],
        renderTo: ' grid ' ,
        viewConfig:{forceFit: true },        
        trackMouseOver: true ,
        loadMask:  true ,
        autoShow :  true ,
        autoScroll:  true ,
        loadMask:{msg: " 数据加载中，请稍等 " },
        bbar: new  Ext.PagingToolbar({
            pageSize: 20 ,
            store:storeMain,
            displayInfo: true ,
            displayMsg: ' 当前显示 {0} - {1}条记录 /共 {2}条记录 ' ,
            emptyMsg: " 没有数据 "
        })
    });
    storeMain.load({params:{start: 0 , limit: 20 ,sort: ' <%= SourceTable.PrimaryKey.MemberColumns[0].Name %> ' ,dir: ' desc ' }});
});
< script runat = " template " >
//  My functions here.
public string GetClassName(TableSchema table)
{
     if (table == null )
    {
         return   null ;
    }
     return  table.Name  +   " Grid " ;
}
public string GetUrlName(TableSchema table)
{
     if (table == null )
    {
         return   null ;
    }
     return  table.Name  +   " Grid " + " .aspx " ;
}

#region script
public string GetMemberVariableDeclarationStatement(ColumnSchema column)
{
     return  GetMemberVariableDeclarationStatement( " private " , column);
}

public string GetMemberVariableDeclarationStatement(string protectionLevel, ColumnSchema column)
{
    string statement  =  protectionLevel  +   "   " ;
    statement  +=  GetCSharpVariableType(column)  +   "   "   +  GetMemberVariableName(column);
    
    string defaultValue  =  GetMemberVariableDefaultValue(column);
     if  (defaultValue  !=   "" )
    {
        statement  +=   "  =  "   +  defaultValue;
    }
    
    statement  +=   " ; " ;
    
     return  statement;
}

public string GetConstructorParameters()
{
    string ret  =   "" ;
    foreach(ColumnSchema column  in  SourceTable.Columns)
    {
        ret  +=  GetCSharpVariableType(column)  +   "   "   +  GetCamelCaseName(GetPropertyName(column))  +   " ,/n/t/t/t " ;
    }
     return  ret.Substring( 0 , ret.Length  -   5 );
}

public string GetAssignValue()
{
    string ret  =   "" ;
    foreach(ColumnSchema column  in  SourceTable.Columns)
    {
        ret  +=  GetMemberVariableName(column)  +   ( new  String( '   ' , GetPropertyNameMaxLength()  -  GetPropertyNameLength(column)))  +   "  =  "   +  GetCamelCaseName(GetPropertyName(column))  +   " ;/n/t/t/t " ;
    }
     return  ret;
}

public string GetReaderAssignmentStatement(ColumnSchema column,  int  index)
{
    string statement  =   " if (!reader.IsDBNull( "   +  index.ToString()  +   " ))  " ;
    statement  +=  GetMemberVariableName(column)  +   "  =  " ;
    
     if  (column.Name.EndsWith( " TypeCode " )) statement  +=   " ( "   +  column.Name  +   " ) " ;
    
    statement  +=   " reader. "   +  GetReaderMethod(column)  +   " ( "   +  index.ToString()  +   " ); " ;
    
     return  statement;
}

public string GetCamelCaseName(string value)
{
     // return value.Substring(0, 1).ToLower() + value.Substring(1);
     return  value;
}

public string GetMemberVariableName(ColumnSchema column)
{
     // string propertyName = GetPropertyName(column);
    string propertyName  =  column.Name;
    string memberVariableName  =   " ' "   + GetCamelCaseName(propertyName) + " ' " ;
    
     return  memberVariableName;
}
public string GetHeaderName(ColumnSchema column)
{
     // string propertyName = GetPropertyName(column);
    string propertyName  =  column.Name;
    string memberVariableName  =  GetCamelCaseName(propertyName);
    
     return  memberVariableName;
}

public string GetPropertyName(ColumnSchema column)
{
    string propertyName  =  column.Name;
    
     if  (propertyName  ==  column.Table.Name  +   " Name " )  return   " Name " ;
     if  (propertyName  ==  column.Table.Name  +   " Description " )  return   " Description " ;
    
     if  (propertyName.EndsWith( " TypeCode " )) propertyName  =  propertyName.Substring( 0 , propertyName.Length  -   4 );
    
     return  propertyName;
}

public  int  GetPropertyNameLength(ColumnSchema column)
{
     return  (GetPropertyName(column)).Length;
}
public  int  GetPropertyNameMaxLength()
{
     int  ret  =   0 ;
    foreach(ColumnSchema column  in  SourceTable.Columns)
    {
        ret  =  ret  <  GetPropertyNameLength(column) ? GetPropertyNameLength(column):ret;
    }
     return  ret;
}
        
public string GetMemberVariableDefaultValue(ColumnSchema column)
{
     if (column.IsPrimaryKeyMember)
    {
         return   "" ;
    }
     switch  (column.DataType)
    {
         case  DbType.Guid:
        {
             return   " Guid.Empty " ;
        }
         case  DbType.AnsiString:
         case  DbType.AnsiStringFixedLength:
         case  DbType.String:
         case  DbType.StringFixedLength:
        {
             return   " String.Empty " ;
        }
         default :
        {
             return   "" ;
        }
    }
}

public string GetCSharpVariableType(ColumnSchema column)
{
     if  (column.Name.EndsWith( " TypeCode " ))  return  column.Name;
    
     switch  (column.DataType)
    {
         case  DbType.AnsiString:  return   " string " ;
         case  DbType.AnsiStringFixedLength:  return   " string " ;
         case  DbType.Binary:  return   " byte[] " ;
         case  DbType.Boolean:  return   " bool " ;
         case  DbType.Byte:  return   " byte " ;
         case  DbType.Currency:  return   " decimal " ;
         case  DbType.Date:  return   " DateTime " ;
         case  DbType.DateTime:  return   " DateTime " ;
         case  DbType.Decimal:  return   " decimal " ;
         case  DbType.Double:  return   " double " ;
         case  DbType.Guid:  return   " Guid " ;
         case  DbType.Int16:  return   " short " ;
         case  DbType.Int32:  return   " int " ;
         case  DbType.Int64:  return   " long " ;
         case  DbType.Object:  return   " object " ;
         case  DbType.SByte:  return   " sbyte " ;
         case  DbType.Single:  return   " float " ;
         case  DbType.String:  return   " string " ;
         case  DbType.StringFixedLength:  return   " string " ;
         case  DbType.Time:  return   " TimeSpan " ;
         case  DbType.UInt16:  return   " ushort " ;
         case  DbType.UInt32:  return   " uint " ;
         case  DbType.UInt64:  return   " ulong " ;
         case  DbType.VarNumeric:  return   " decimal " ;
         default :
        {
             return   " __UNKNOWN__ "   +  column.NativeType;
        }
    }
}

public string GetReaderMethod(ColumnSchema column)
{
     switch  (column.DataType)
    {
         case  DbType.Byte:
        {
             return   " GetByte " ;
        }
         case  DbType.Int16:
        {
             return   " GetInt16 " ;
        }
         case  DbType.Int32:
        {
             return   " GetInt32 " ;
        }
         case  DbType.Int64:
        {
             return   " GetInt64 " ;
        }
         case  DbType.AnsiStringFixedLength:
         case  DbType.AnsiString:
         case  DbType.String:
         case  DbType.StringFixedLength:
        {
             return   " GetString " ;
        }
         case  DbType.Boolean:
        {
             return   " GetBoolean " ;
        }
         case  DbType.Guid:
        {
             return   " GetGuid " ;
        }
         case  DbType.Currency:
         case  DbType.Decimal:
        {
             return   " GetDecimal " ;
        }
         case  DbType.DateTime:
         case  DbType.Date:
        {
             return   " GetDateTime " ;
        }
         case  DbType.Binary:
        {
             return   " GetBytes " ;
        }
         default :
        {
             return   " __SQL__ "   +  column.DataType;
        }
    }
}
public string GetSqlDbType(ColumnSchema column)
{
     switch  (column.NativeType)
    {
         case   " bigint " :  return   " BigInt " ;
         case   " binary " :  return   " Binary " ;
         case   " bit " :  return   " Bit " ;
         case   " char " :  return   " Char " ;
         case   " datetime " :  return   " DateTime " ;
         case   " decimal " :  return   " Decimal " ;
         case   " float " :  return   " Float " ;
         case   " image " :  return   " Image " ;
         case   " int " :  return   " Int " ;
         case   " money " :  return   " Money " ;
         case   " nchar " :  return   " NChar " ;
         case   " ntext " :  return   " NText " ;
         case   " numeric " :  return   " Decimal " ;
         case   " nvarchar " :  return   " NVarChar " ;
         case   " real " :  return   " Real " ;
         case   " smalldatetime " :  return   " SmallDateTime " ;
         case   " smallint " :  return   " SmallInt " ;
         case   " smallmoney " :  return   " SmallMoney " ;
         case   " sql_variant " :  return   " Variant " ;
         case   " sysname " :  return   " NChar " ;
         case   " text " :  return   " Text " ;
         case   " timestamp " :  return   " Timestamp " ;
         case   " tinyint " :  return   " TinyInt " ;
         case   " uniqueidentifier " :  return   " UniqueIdentifier " ;
         case   " varbinary " :  return   " VarBinary " ;
         case   " varchar " :  return   " VarChar " ;
         default :  return   " __UNKNOWN__ "   +  column.NativeType;
    }
}

public string GetPrimaryKeyType(TableSchema table)
{
     if  (table.PrimaryKey  !=   null )
    {
         if  (table.PrimaryKey.MemberColumns.Count  ==   1 )
        {
             return  GetCSharpVariableType(table.PrimaryKey.MemberColumns[ 0 ]);
        }
         else
        {
             throw   new  ApplicationException( " This template will not work on primary keys with more than one member column. " );
        }
    }
     else
    {
         throw   new  ApplicationException( " This template will only work on tables with a primary key. " );
    }
}

public override string GetFileName()
{
     return   this .GetClassName( this .SourceTable)  +   " .cs " ;
}

public string GetCamelCaseNameTrue(string value)
{
     return  value.Substring( 0 ,  1 ).ToLower()  +  value.Substring( 1 );
}
#endregion script
< / script>