remove mor warnings

Author: jogibear9988

src/Migrator/Providers/Impl/Oracle/OracleTransformationProvider.cs

@@ -44,12 +44,6 @@ public override void AddForeignKey(string name, string primaryTable, string[] pr
 		{
 			GuardAgainstMaximumIdentifierLengthForOracle(name);
 
-			if (ConstraintExists(primaryTable, name))
-			{
-				Logger.Warn("Constraint {0} already exists", name);
-				return;
-			}
-
 			primaryTable = QuoteTableNameIfRequired(primaryTable);
 			refTable = QuoteTableNameIfRequired(refTable);
 			string primaryColumnsSql = String.Join(",", primaryColumns.Select(col => QuoteColumnNameIfRequired(col)).ToArray());
@@ -73,12 +67,6 @@ protected override string getPrimaryKeyname(string tableName)
 
 		public override void ChangeColumn(string table, Column column)
 		{
-			if (!ColumnExists(table, column.Name))
-			{
-				Logger.Warn("Column {0}.{1} does not exist", table, column.Name);
-				return;
-			}
-
 			var existingColumn = GetColumnByName(table, column.Name);
 
 			if (column.Type == DbType.String)

src/Migrator/Providers/Impl/PostgreSQL/PostgreSQLTransformationProvider.cs

@@ -174,12 +174,6 @@ public override void ChangeColumn(string table, Column column)
 
 			column.ColumnProperty = column.ColumnProperty.Clear(ColumnProperty.Unique);
 
-			if (!ColumnExists(table, column.Name))
-			{
-				Logger.Warn("Column {0}.{1} does not exist", table, column.Name);
-				return;
-			}
-
 			ColumnPropertiesMapper mapper = _dialect.GetAndMapColumnProperties(column);
 
 			string change1 = string.Format("{0} TYPE {1}", QuoteColumnNameIfRequired(mapper.Name), mapper.type);

src/Migrator/Providers/Impl/SQLite/SQLiteTransformationProvider.cs

@@ -266,12 +266,6 @@ private void changeColumnInternal(string table, string[] old, IDbField[] columns
 
 		public override void ChangeColumn(string table, Column column)
 		{
-			if (!ColumnExists(table, column.Name))
-			{
-				Logger.Warn("Column {0}.{1} does not exist", table, column.Name);
-				return;
-			}
-
 			if (
 					(column.ColumnProperty & ColumnProperty.PrimaryKey) != ColumnProperty.PrimaryKey &&
 					(column.ColumnProperty & ColumnProperty.Unique) != ColumnProperty.Unique &&
@@ -508,12 +502,6 @@ FROM sqlite_master
 
 		public override void AddTable(string name, string engine, params IDbField[] fields)
 		{
-			if (TableExists(name))
-			{
-				Logger.Warn("Table {0} already exists", name);
-				return;
-			}
-
 			var columns = fields.Where(x => x is Column).Cast<Column>().ToArray();
 
 			List<string> pks = GetPrimaryKeys(columns);

src/Migrator/Providers/Impl/SqlServer/SqlServerTransformationProvider.cs

@@ -80,24 +80,13 @@ public override void AddColumn(string table, string sqlColumn)
 		}
 		public override void AddPrimaryKeyNonClustered(string name, string table, params string[] columns)
 		{
-			if (ConstraintExists(table, name))
-			{
-				Logger.Warn("Primary key {0} already exists", name);
-				return;
-			}
 			string nonclusteredString = "NONCLUSTERED";
 			ExecuteNonQuery(
 			String.Format("ALTER TABLE {0} ADD CONSTRAINT {1} PRIMARY KEY {2} ({3}) ", table, name, nonclusteredString,
 						  String.Join(",", QuoteColumnNamesIfRequired(columns))));
 		}
 		public override void AddIndex(string table, Index index)
 		{
-			if (IndexExists(table, index.Name))
-			{
-				Logger.Warn("Index {0} already exists", index.Name);
-				return;
-			}
-
 			var name = QuoteConstraintNameIfRequired(index.Name);
 
 			table = QuoteTableNameIfRequired(table);