/**/
/// <summary>
/// 构造函数
/// </summary>
/// <param name="DBTypeEnum">合并因子 (mergeFactor)</param>
/// <param name="maxBufferedDocs">文档内存最大存储数</param>
public DBCreateIndexer(Analyzer analyzer, DBTypeEnum type, string connectString, string directory,string dbName)
:base(dbName)
{
this.analyzer = analyzer;
_connectString = connectString;
_directory = directory;
}
/**/
/// <summary>
/// 将数据库查询结果写入索引
/// </summary>
/// <param name="strSQL">数据库查询语句</param>
public override void WriteResults(string strSQL)
{
DBLinker linker;
switch (dbType)
{
case DBTypeEnum.SQL_Server:
linker=new SqlServerLinker(_connectString);
break;
case DBTypeEnum.OLE_DB:
linker = new OleDbLinker(_connectString);
break;
case DBTypeEnum.ODBC:
linker = new OdbcLinker(_connectString);
break;
case DBTypeEnum.Oracle:
linker = new OracleLinker(_connectString);
break;
default:
linker = new SqlServerLinker(_connectString);
break;
}
DataTable dt = linker.ExecuteSQL(strSQL);
DbWriterBase writer = new DBCreateIWriter(analyzer,dbName, _directory,int.MaxValue,512,1000,1000);
writer.WriteDataTable(dt);
linker.Close();
}
/**/
/// <summary>
/// 将数据库查询结果写入索引
/// </summary>
/// <param name="strSQL">数据库查询语句</param>
/// <param name="mergeFactor">合并因子 (mergeFactor)</param>
/// <param name="maxBufferedDocs">文档内存最大存储数</param>
public override void WriteResultsWithEvent(string strSQL, int maxFieldLength, double ramBufferSize, int mergeFactor, int maxBufferedDocs, Dictionary<string, float> fieldBoostDict)
{
DBLinker linker;
switch (dbType)
{
case DBTypeEnum.SQL_Server:
linker = new SqlServerLinker(_connectString);
break;
case DBTypeEnum.OLE_DB:
linker = new OleDbLinker(_connectString);
break;
case DBTypeEnum.ODBC:
linker = new OdbcLinker(_connectString);
break;
case DBTypeEnum.Oracle:
linker = new OracleLinker(_connectString);
break;
default:
linker = new SqlServerLinker(_connectString);
break;
}
DataTable dt = linker.ExecuteSQL(strSQL);
DbWriterBase writer = new DBCreateIWriter(analyzer,dbName, _directory, maxFieldLength, ramBufferSize, mergeFactor, maxBufferedDocs);
writer.OnProgressChanged += new WriteDbProgressChangedEventHandler(Writer_OnProgressChanged);
writer.WriteDataTableWithEvent(dt,fieldBoostDict);
linker.Close();
IndexCompletedEventArgs args = new IndexCompletedEventArgs("CreateIndex");
OnIndexCompletedEvent(this, args);
}
/**/
/// <summary>
/// 将数据库查询结果写入索引
/// </summary>
/// <param name="strSQL">数据库查询语句</param>
/// <param name="mergeFactor">合并因子 (mergeFactor)</param>
/// <param name="maxBufferedDocs">文档内存最大存储数</param>
public override void WriteResultsWithEvent(string strSQL, int maxFieldLength, double ramBufferSize, int mergeFactor, int maxBufferedDocs)
{
DBLinker linker;
switch (dbType)
{
case DBTypeEnum.SQL_Server:
linker = new SqlServerLinker(_connectString);
break;
case DBTypeEnum.OLE_DB:
linker = new OleDbLinker(_connectString);
break;
case DBTypeEnum.ODBC:
linker = new OdbcLinker(_connectString);
break;
case DBTypeEnum.Oracle:
linker = new OracleLinker(_connectString);
break;
default:
linker = new SqlServerLinker(_connectString);
break;
}
DataTable dt = linker.ExecuteSQL(strSQL);
DbWriterBase writer = new DBCreateIWriter(analyzer,dbName, _directory, maxFieldLength, ramBufferSize, mergeFactor, maxBufferedDocs);
writer.OnProgressChanged += new WriteDbProgressChangedEventHandler(Writer_OnProgressChanged);
writer.WriteDataTableWithEvent(dt);
linker.Close();
IndexCompletedEventArgs args = new IndexCompletedEventArgs("CreateIndex");
OnIndexCompletedEvent(this, args);
}
/**/
/// <summary>
/// 将数据库查询结果写入索引
/// </summary>
/// <param name="strSQL">数据库查询语句</param>
/// <param name="mergeFactor">合并因子 (mergeFactor)</param>
/// <param name="maxBufferedDocs">文档内存最大存储数</param>
public override void WriteResults(string strSQL, int maxFieldLength, double ramBufferSize, int mergeFactor, int maxBufferedDocs)
{
DBLinker linker;
switch (dbType)
{
case DBTypeEnum.SQL_Server:
linker=new SqlServerLinker(_connectString);
break;
case DBTypeEnum.OLE_DB:
linker = new OleDbLinker(_connectString);
break;
case DBTypeEnum.ODBC:
linker = new OdbcLinker(_connectString);
break;
case DBTypeEnum.Oracle:
linker = new OracleLinker(_connectString);
break;
default:
linker = new SqlServerLinker(_connectString);
break;
}
DataTable dt = linker.ExecuteSQL(strSQL);
DbWriterBase writer = new DBCreateIWriter(analyzer,dbName, _directory,maxFieldLength,ramBufferSize,mergeFactor,maxBufferedDocs);
writer.WriteDataTable(dt);
linker.Close();
}
/**/
/// <summary>
/// 将数据库查询结果写入索引
/// </summary>
/// <param name="strSQL">数据库查询语句</param>
/// <param name="mergeFactor">合并因子 (mergeFactor)</param>
/// <param name="maxBufferedDocs">文档内存最大存储数</param>
public override void WriteResults(string strSQL, int maxFieldLength, double ramBufferSize, int mergeFactor, int maxBufferedDocs, Dictionary<string, float> fieldBoostDict)
{
DBLinker linker;
switch (dbType)
{
case DBTypeEnum.SQL_Server:
linker = new SqlServerLinker(_connectString);
break;
case DBTypeEnum.OLE_DB:
linker = new OleDbLinker(_connectString);
break;
case DBTypeEnum.ODBC:
linker = new OdbcLinker(_connectString);
break;
case DBTypeEnum.Oracle:
linker = new OracleLinker(_connectString);
break;
default:
linker = new SqlServerLinker(_connectString);
break;
}
DataTable dt = linker.ExecuteSQL(strSQL);
DbWriterBase writer = new DBCreateIWriter(analyzer,dbName, _directory, maxFieldLength, ramBufferSize, mergeFactor, maxBufferedDocs);
writer.WriteDataTable(dt,fieldBoostDict);
linker.Close();
}
public static bool TestQuery(DBTypeEnum dbType, string hostName, string db, string user, string pwd, string query)
{
string connStr = "", format = "";
DBLinker linker;
try
{
switch (dbType)
{
case DBTypeEnum.ODBC:
format = "Server={0};Database={1};Uid={2};Pwd={3};";
connStr = string.Format(format, hostName, db, user, pwd);
linker =new OdbcLinker(connStr);
break;
case DBTypeEnum.OLE_DB:
format = "Server={0};Database={1};Uid={2};Pwd={3};";
connStr = string.Format(format, hostName, db, user, pwd);
linker = new OleDbLinker(connStr);
break;
case DBTypeEnum.Oracle:
format = "host={0};Data source={1};User id={2};Password={3};";
connStr = string.Format(format, hostName, db, user, pwd);
linker = new OracleLinker(connStr);
break;
case DBTypeEnum.SQL_Server:
format = "Data Source={0};Initial Catalog= {1};User Id={2};Password={3};";
connStr = string.Format(format, hostName, db, user, pwd);
linker = new SqlServerLinker(connStr);
break;
default:
format = "Data Source={0};Initial Catalog= {1};User Id={2};Password={3};";
connStr = string.Format(format, hostName, db, user, pwd);
linker = new SqlServerLinker(connStr);
break;
}
DataTable dt = linker.ExecuteSQL(query);
int count = dt.Rows.Count;
dt.Clear();
linker.Close();
if (count > 0)
return true;
else
return false;
}
catch (Exception e)
{
#if DEBUG
System.Console.WriteLine(e.StackTrace.ToString());
#endif
return false;
}
}
public static Dictionary<string, List<FieldInfo>> GetQueryTableFields(DBTypeEnum dbType, string connStr, string query)
{
Dictionary<string, List<FieldInfo>> tableFieldDict = new Dictionary<string, List<FieldInfo>>();
DBLinker linker;
try
{
switch (dbType)
{
case DBTypeEnum.ODBC:
linker = new OdbcLinker(connStr);
break;
case DBTypeEnum.OLE_DB:
linker = new OleDbLinker(connStr);
break;
case DBTypeEnum.Oracle:
linker = new OracleLinker(connStr);
break;
case DBTypeEnum.SQL_Server:
linker = new SqlServerLinker(connStr);
break;
default:
linker = new SqlServerLinker(connStr);
break;
}
List<string> tableList = SupportClass.QueryParser.TablesInQuery(query);
foreach (string table in tableList)
{
DataTable dt = linker.ExecuteSQL(SupportClass.QueryParser.TopOneOfTable(table));
List<FieldInfo> fieldList = new List<FieldInfo>();
foreach (DataColumn column in dt.Columns)
{
fieldList.Add(new FieldInfo(column.ColumnName,column.DataType,column.Unique));
}
if (tableFieldDict.ContainsKey(table) == false)
tableFieldDict.Add(table, fieldList);
dt.Clear();
}
linker.Close();
}
catch (Exception e)
{
#if DEBUG
System.Console.WriteLine(e.StackTrace.ToString());
#endif
}
return tableFieldDict;
}
public static bool TestFields(DBTypeEnum dbType, string hostName, string db, string user, string pwd, string query,string fields)
{
string connStr = "", format = "";
DBLinker linker;
try
{
switch (dbType)
{
case DBTypeEnum.ODBC:
format = "Server={0};Database={1};Uid={2};Pwd={3};";
connStr = string.Format(format, hostName, db, user, pwd);
linker = new OdbcLinker(connStr);
break;
case DBTypeEnum.OLE_DB:
format = "Server={0};Database={1};Uid={2};Pwd={3};";
connStr = string.Format(format, hostName, db, user, pwd);
linker = new OleDbLinker(connStr);
break;
case DBTypeEnum.Oracle:
format = "host={0};Data source={1};User id={2};Password={3};";
connStr = string.Format(format, hostName, db, user, pwd);
linker = new OracleLinker(connStr);
break;
case DBTypeEnum.SQL_Server:
format = "Data Source={0};Initial Catalog= {1};User Id={2};Password={3};";
connStr = string.Format(format, hostName, db, user, pwd);
linker = new SqlServerLinker(connStr);
break;
default:
format = "Data Source={0};Initial Catalog= {1};User Id={2};Password={3};";
connStr = string.Format(format, hostName, db, user, pwd);
linker = new SqlServerLinker(connStr);
break;
}
DataTable dt = linker.ExecuteSQL(query);
int count = dt.Rows.Count;
if (count < 0)
{
dt.Clear();
linker.Close();
return false;
}
List<IndexField> fpList = new List<IndexField>();
if (fields.IndexOf(')') > 0)
{
string[] split = SupportClass.String.Split(fields, ")");
foreach (string token in split)
fpList.Add(new IndexField(token));
}
else
{
string[] split = SupportClass.String.Split(fields, ",");
foreach (string token in split)
fpList.Add(new IndexField(token));
}
bool find;
foreach (IndexField fp in fpList)
{
find = false;
foreach(DataColumn column in dt.Columns)
{
if(column.ColumnName.ToLower().CompareTo(fp.Name.ToLower())==0)
{
find = true;
break;
}
}
if (!find)
{
dt.Clear();
linker.Close();
return false;
}
}
dt.Clear();
linker.Close();
return true;
}
catch (Exception e)
{
#if DEBUG
System.Console.WriteLine(e.StackTrace.ToString());
#endif
return false;
}
}
