public void Push(SQLComponent componect)
{
if (this._allowFlag != 0)
{
this._buffer.Enqueue(componect);
}
}
public IDriver <T> OrWhere(Expression <Func <T, Boolean> > predicate)
{
this.SQLComponent.AppendWhere(false);
SQLComponent component = new SQLComponent();
LambdaToSqlConverter <T> .WhereConvert(this.DbProvider, predicate, component);
this.SQLComponent.AppendSQLFormat(CommonFormat.BRACKET_FORMAT, component.SQL);
this.SQLComponent.AddParameters(component.Parameters);
return(this);
}
public static IDriver <T> CETSelect <T>(this Table <T> tableObj, SQLComponent start, SQLComponent body) where T : class
{
IDriver <T> driver = tableObj.DbProvider.Driver <T>();
String columnNames = tableObj.GetColumnNames();
String sql = String.Format(BasicSqlFormat.CET_QUERY_FORMAT, columnNames, start.SQL, body.SQL);
driver.SQLComponent.AppendSQL(sql);
driver.SQLComponent.AddParameters(start.Parameters);
driver.SQLComponent.AddParameters(body.Parameters);
return(driver);
}
public static void InsertConvert(DbProvider dbProvider, T obj, SQLComponent component)
{
String columnName = null;
String parameterName = null;
Object value = null;
DbParameter dbParameter = null;
StringBuilder parameterNames = new StringBuilder();
StringBuilder columnNames = new StringBuilder();
Int32 length = Table <T> .Schema.PropertyInfos.Length;
for (Int32 i = 0; i < length; ++i)
{
PropertyInfo info = Table <T> .Schema.PropertyInfos[i];
var colSchema = Table <T> .Schema.GetColumnSchema(info.Name);
if (colSchema.IsJoinColumn)
{
continue;
}
columnName = colSchema.Name;
value = Table <T> .Schema.PropertyAccessor.GetValue(i, obj);
if (value == null)
{
continue;
}
parameterName = dbProvider.Prefix + columnName + ParaCounter <T> .CountString;
dbParameter = dbProvider.DbParameter(parameterName, value ?? DBNull.Value, colSchema.DbType);
columnNames.Append(String.Format(dbProvider.ConflictFreeFormat, columnName));
parameterNames.Append(dbParameter.ParameterName);
columnNames.Append(SqlKeyWord.COMMA);
parameterNames.Append(SqlKeyWord.COMMA);
component.AddParameter(dbParameter);
}
Int32 commaLength = SqlKeyWord.COMMA.Length;
columnNames.Remove(columnNames.Length - commaLength, commaLength);
parameterNames.Remove(parameterNames.Length - commaLength, commaLength);
component.AppendSQLFormat(BasicSqlFormat.INSERT_FORMAT,
Table <T> .Schema.TableName,
columnNames.ToString(),
parameterNames.ToString());
}
public static void UpdateConvert(DbProvider dbProvider, T obj, SQLComponent component)
{
StringBuilder updateColumnNames = new StringBuilder();
Int32 length = Table <T> .Schema.PropertyInfos.Length;
for (Int32 i = 0; i < length; ++i)
{
PropertyInfo info = Table <T> .Schema.PropertyInfos[i];
ColumnSchema colSchema = Table <T> .Schema.GetColumnSchema(info.Name);
if (colSchema.IsPrimaryKey)
{
continue;
}
if (colSchema.IsJoinColumn)
{
continue;
}
Object value = Table <T> .Schema.PropertyAccessor.GetValue(i, obj);
if (value == null)
{
continue;
}
String columnName = colSchema.Name;
String parameterName = dbProvider.Prefix + columnName + ParaCounter <T> .CountString;
DbParameter dbParameter = dbProvider.DbParameter
(
parameterName,
value ?? DBNull.Value,
colSchema.DbType
);
updateColumnNames.Append(String.Format(dbProvider.ConflictFreeFormat, columnName));
updateColumnNames.Append(SqlKeyWord.EQUAL);
updateColumnNames.Append(parameterName);
updateColumnNames.Append(SqlKeyWord.COMMA);
component.AddParameter(dbParameter);
}
updateColumnNames.Remove(updateColumnNames.Length - SqlKeyWord.COMMA.Length, SqlKeyWord.COMMA.Length);
component.AppendSQLFormat(BasicSqlFormat.UPDATE_FORMAT, Table <T> .Schema.TableName, updateColumnNames.ToString());
}
public static void ReplaceConvert(DbProvider dbProvider, T obj, SQLComponent component)
{
String columnName = null;
String parameterName = null;
Object value = null;
DbParameter dbParameter = null;
StringBuilder parameterNames = new StringBuilder();
StringBuilder columnNames = new StringBuilder();
Int32 length = Table <T> .Schema.PropertyInfos.Length;
for (Int32 i = 0; i < length; ++i)
{
PropertyInfo info = Table <T> .Schema.PropertyInfos[i];
var colSchema = Table <T> .Schema.GetColumnSchema(info.Name);
columnName = colSchema.Name;
value = Table <T> .Schema.PropertyAccessor.GetValue(i, obj);
//主键、默认值、可空判断
parameterName = dbProvider.Prefix + columnName + ParaCounter <T> .CountString;
dbParameter = dbProvider.DbParameter(
parameterName,
value ?? DBNull.Value,
colSchema.DbType);
columnNames.Append(String.Format(dbProvider.ConflictFreeFormat, columnName));
parameterNames.Append(dbParameter.ParameterName);
if (i != (length - 1))
{
columnNames.Append(SqlKeyWord.COMMA);
parameterNames.Append(SqlKeyWord.COMMA);
}
component.AddParameter(dbParameter);
}
component.AppendSQLFormat(BasicSqlFormat.REPLACE_FORMAT,
Table <T> .Schema.TableName,
columnNames.ToString(),
parameterNames.ToString());
}
public static void BatchInsertConvert(DbProvider dbProvider, IEnumerable <T> objs, SQLComponent component)
{
foreach (T obj in objs)
{
InsertConvert(dbProvider, obj, component);
component.AppendSQL(SqlKeyWord.SEMICOLON);
}
}
/// <summary>
/// 将另一个<see cref="SQLComponent"/>组件包含的SQ、L参数等信息附加到末尾
/// </summary>
/// <param name="component"></param>
public void Append(SQLComponent component)
{
this.AppendSQL(component.SQL);
this.AddParameters(component.Parameters);
}
internal static void AnalyingIn <T>(DbProvider dbProvider, String columnName, SQLComponent component, Object[] values)
where T : class
{
StringBuilder inParaNames = new StringBuilder();
Int32 count = values.Length;
String paraSymbol = "inPara";
for (Int32 i = 0; i < count; ++i)
{
String paraName = dbProvider.Prefix + paraSymbol + ParaCounter <T> .CountString;
inParaNames.Append(paraName);
if (i != (count - 1))
{
inParaNames.Append(SqlKeyWord.COMMA);
}
DbParameter parameter = dbProvider.DbParameter(
paraName, values[i]
);
component.AddParameter(parameter);
}
component.AppendSQL(columnName);
component.AppendSQL(SqlKeyWord.IN);
component.AppendSQLFormat(CommonFormat.BRACKET_FORMAT, inParaNames.ToString());
}
internal static void AnalyingIn <T>(DbProvider dbProvider, Expression <Func <T, Object> > filter, SQLComponent component, Object[] values)
where T : class
{
MemberExpression expression;
ExpressionType noteType = filter.Body.NodeType;;
switch (noteType)
{
case ExpressionType.Convert:
UnaryExpression unary = filter.Body as UnaryExpression;
expression = (MemberExpression)unary.Operand;
break;
case ExpressionType.MemberAccess:
{
expression = filter.Body as MemberExpression;
}
break;
default:
throw new ArgumentException(nameof(filter));;
}
SchemaCache schema = Table <T> .Schema;
var colSchema = schema.GetColumnSchema(expression.Member.Name);
String columnName = colSchema.Name;
columnName = String.Format(dbProvider.ConflictFreeFormat, columnName);
columnName = String.Format(CommonFormat.COLUMN_FORMAT, schema.TableName, columnName);
StringBuilder inParaNames = new StringBuilder();
Int32 count = values.Length;
String paraSymbol = "inPara";
for (Int32 i = 0; i < count; ++i)
{
String paraName = dbProvider.Prefix + paraSymbol + ParaCounter <T> .CountString;
inParaNames.Append(paraName);
if (i != (count - 1))
{
inParaNames.Append(SqlKeyWord.COMMA);
}
DbParameter parameter = dbProvider.DbParameter(
paraName, values[i], colSchema.DbType
);
component.AddParameter(parameter);
}
component.AppendSQL(columnName);
component.AppendSQL(SqlKeyWord.IN);
component.AppendSQLFormat(CommonFormat.BRACKET_FORMAT, inParaNames.ToString());
}
