public Column(string name, DataType type)
{
InitializeMembers();
this.Name = name;
this.DataType = type;
}
public ColumnReference(TableReference tableReference, Column columnDescription)
{
InitializeMembers();
this.tableReference = tableReference;
this.columnName = columnDescription.Name;
this.dataType = columnDescription.DataType;
}
public DataType(DataType old)
{
CopyMembers(old);
}
private void CopyMembers(DataType old)
{
this.name = old.name;
this.type = old.type;
this.sqlDbType = old.sqlDbType;
this.byteSize = old.byteSize;
this.scale = old.scale;
this.precision = old.precision;
this.length = old.length;
this.maxLength = old.maxLength;
this.isVarLength = old.isVarLength;
this.isSqlArray = old.isSqlArray;
this.arrayLength = old.arrayLength;
this.isVarArrayLength = old.isVarArrayLength;
this.isNullable = old.isNullable;
}
public bool Compare(DataType other)
{
var res = true;
res &= SchemaManager.Comparer.Compare(this.Name, other.name) == 0;
res &= this.type == other.type;
res &= this.scale == other.scale;
res &= this.precision == other.precision;
res &= !this.HasLength || (this.length == other.length);
res &= this.isNullable == other.isNullable;
return res;
}
private void InitializeMembers(StreamingContext context)
{
this.parent = null;
this.id = -1;
this.name = String.Empty;
this.dataType = null;
this.metadata = new LazyProperty<VariableMetadata>(LoadMetadata);
}
private void CopyMembers(Variable old)
{
this.parent = old.parent;
this.id = old.id;
this.name = old.name;
this.dataType = old.dataType;
this.metadata = new LazyProperty<VariableMetadata>(LoadMetadata);
}
private void InitializeMembers()
{
this.columnExpression = null;
this.columnIdentifier = null;
this.tableReference = null;
this.columnName = null;
this.dataType = DataType.Unknown;
this.columnAlias = null;
this.isStar = false;
this.isComplexExpression = false;
this.selectListIndex = -1;
this.columnContext = Graywulf.SqlParser.ColumnContext.None;
}
private void CopyMembers(ColumnReference old)
{
this.columnExpression = old.columnExpression;
this.columnIdentifier = old.columnIdentifier;
this.tableReference = old.tableReference;
this.columnName = old.columnName;
this.dataType = old.dataType;
this.columnAlias = old.columnAlias;
this.isStar = old.isStar;
this.isComplexExpression = old.isComplexExpression;
this.selectListIndex = old.selectListIndex;
this.columnContext = old.columnContext;
}
