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#region Copyright
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#endregion
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using System;
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using System.Data;
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using System.Data.OleDb;
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using System.IO;
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using System.Text;
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using Seasar.Extension.ADO.Types;
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using Seasar.Extension.DataSets.Types;
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namespace Seasar.Extension.DataSets.Impl
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{
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public class XlsWriter : IDataWriter
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{
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private string fullPath_;
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public XlsWriter(string fullPath)
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{
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fullPath_ = Path.GetFullPath(fullPath);
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}
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public string FullPath
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{
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get { return fullPath_; }
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}
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#region IDataWriter メンバ
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public void Write(DataSet dataSet)
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{
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string connectonString = string.Format(
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"Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties=\"Excel 8.0;HDR=Yes\"",
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fullPath_
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);
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CreateDir();
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if (File.Exists(fullPath_))
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{
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File.Delete(fullPath_);
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}
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using (OleDbConnection con = new OleDbConnection(connectonString))
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{
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if (con.State != ConnectionState.Open)
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{
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con.Open();
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}
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foreach (DataTable table in dataSet.Tables)
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{
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string createTableSql = CreateTableSql(table);
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using (OleDbCommand cmd = new OleDbCommand(createTableSql, con))
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{
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cmd.ExecuteNonQuery();
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}
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foreach (DataRow row in table.Rows)
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{
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string insertSql = CreateInsertSql(table, row);
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using (OleDbCommand cmd = new OleDbCommand(insertSql, con))
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{
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foreach (DataColumn column in row.Table.Columns)
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{
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IColumnType columnType = ColumnTypes.GetColumnType(column.DataType);
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object value = columnType.Convert(row[column.ColumnName], null);
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if (value != DBNull.Value)
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{
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IDbDataParameter param = cmd.CreateParameter();
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param.ParameterName = "@" + column.ColumnName;
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DbType dbType = columnType.GetDbType();
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param.DbType = (dbType == DbType.Binary) ? DbType.String : dbType;
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param.Value = ConvertValue(value);
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cmd.Parameters.Add(param);
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}
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}
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cmd.ExecuteNonQuery();
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}
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}
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}
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}
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}
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#endregion
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private string CreateTableSql(DataTable targetTable)
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{
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StringBuilder sql = new StringBuilder();
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sql.AppendFormat("create table [{0}] (", targetTable.TableName);
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foreach (DataColumn column in targetTable.Columns)
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{
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sql.AppendFormat(
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"{0} {1},",
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column.ColumnName,
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ColumnTypes.GetColumnType(column.DataType).ToDbTypeString()
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);
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}
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if (sql.Length > 0)
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{
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sql.Length = sql.Length - 1;
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}
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sql.Append(")");
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return sql.ToString();
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}
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private string CreateInsertSql(DataTable targetTable, DataRow row)
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{
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StringBuilder sql = new StringBuilder();
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StringBuilder sqlParam = new StringBuilder();
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sql.AppendFormat("insert into [{0}$] (", targetTable.TableName);
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foreach (DataColumn column in targetTable.Columns)
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{
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if (row[column] != DBNull.Value)
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{
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sql.Append(column.ColumnName);
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sql.Append(",");
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sqlParam.Append("?,");
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}
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}
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if (sql.Length > 0)
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{
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sql.Length = sql.Length - 1;
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}
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if (sqlParam.Length > 0)
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{
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sqlParam.Length = sqlParam.Length - 1;
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}
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sql.Append(") VALUES (");
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sql.Append(sqlParam);
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sql.Append(")");
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return sql.ToString();
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}
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private object ConvertValue(object value)
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{
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object ret = null;
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if (value.GetType() == ValueTypes.BYTE_ARRAY_TYPE)
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{
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ret = DataSetConstants.BASE64_FORMAT + Convert.ToBase64String(value as byte[]);
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}
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else
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{
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ret = value;
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}
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return ret;
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}
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private void CreateDir()
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{
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string dir = Path.GetDirectoryName(fullPath_);
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if (!Directory.Exists(dir))
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{
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Directory.CreateDirectory(dir);
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}
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}
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}
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}
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