Deveel.Data.Sql.Statements.UpdateStatement Class Reference

Inheritance diagram for Deveel.Data.Sql.Statements.UpdateStatement:

Classes
class	Prepared

Public Member Functions
	UpdateStatement (string tableName, SqlExpression wherExpression, IEnumerable< SqlColumnAssignment > assignments)
Public Member Functions inherited from Deveel.Data.Sql.Statements.SqlStatement
ITable	Execute (IRequest context)
	Prepares and evaluates this statement into a tabular result. More...

Properties
string	TableName [get, private set]
SqlExpression	WherExpression [get, private set]
int	Limit [get, set]
IEnumerable< SqlColumnAssignment >	Assignments [get, private set]
Properties inherited from Deveel.Data.Sql.Statements.SqlStatement
SqlQuery	SourceQuery [get, set]
	Gets the SqlQuery that is the origin of this statement. More...
bool	IsFromQuery [get, private set]
	Gets a boolean value indicating if this object was formed from the parsing of a SqlQuery or if it was manually created. More...
Properties inherited from Deveel.Data.Sql.Statements.IStatement
SqlQuery	SourceQuery [get]

Private Member Functions
IStatement IPreparableStatement.	Prepare (IRequest context)

Additional Inherited Members
Static Public Member Functions inherited from Deveel.Data.Sql.Statements.SqlStatement
static IEnumerable< SqlStatement >	Parse (string sqlSource)
	Parses a given string into one of more statements. More...
static IEnumerable< SqlStatement >	Parse (IContext context, string sqlSource)
	Parses a given string into one of more statements. More...
static IEnumerable< SqlStatement >	Parse (IContext context, SqlQuery query)
Protected Member Functions inherited from Deveel.Data.Sql.Statements.SqlStatement
	SqlStatement ()
	SqlStatement (ObjectData data)
virtual void	ExecuteStatement (ExecutionContext context)
virtual void	GetData (SerializeData data)
Package Functions inherited from Deveel.Data.Sql.Statements.SqlStatement
void	SetSource (SqlQuery query)

Detailed Description

Definition at line 26 of file UpdateStatement.cs.

Constructor & Destructor Documentation

Deveel.Data.Sql.Statements.UpdateStatement.UpdateStatement ( string  tableName, SqlExpression  wherExpression, IEnumerable< SqlColumnAssignment >  assignments  )

inline

Definition at line 27 of file UpdateStatement.cs.

                                                                                                                             {
            if (wherExpression == null)
                throw new ArgumentNullException("wherExpression");
            if (assignments == null)
                throw new ArgumentNullException("assignments");
            if (String.IsNullOrEmpty(tableName))
                throw new ArgumentNullException("tableName");

            TableName = tableName;
            WherExpression = wherExpression;
            Assignments = assignments;
        }

Member Function Documentation

IStatement IPreparableStatement. Deveel.Data.Sql.Statements.UpdateStatement.Prepare ( IRequest  context )

inlineprivate

Implements Deveel.Data.Sql.Statements.IPreparableStatement.

Definition at line 48 of file UpdateStatement.cs.

                                                                  {
            var tableName = context.Query.ResolveTableName(TableName);
            if (!context.Query.TableExists(tableName))
                throw new ObjectNotFoundException(tableName);

            var queryExpression = new SqlQueryExpression(new[]{SelectColumn.Glob("*") });
            queryExpression.FromClause.AddTable(tableName.FullName);
            queryExpression.WhereExpression = WherExpression;

            var queryFrom = QueryExpressionFrom.Create(context, queryExpression);
            var queryPlan = context.Query.Context.QueryPlanner().PlanQuery(new QueryInfo(context, queryExpression));

            var columns = new List<SqlAssignExpression>();
            foreach (var assignment in Assignments) {
                var columnName = ObjectName.Parse(assignment.ColumnName);

                var refName = queryFrom.ResolveReference(columnName);
                var expression = assignment.Expression.Prepare(queryFrom.ExpressionPreparer);

                var assign = SqlExpression.Assign(SqlExpression.Reference(refName), expression);
                columns.Add(assign);
            }

            return new Prepared(tableName, queryPlan, columns.ToArray(), Limit);
        }

Property Documentation

IEnumerable<SqlColumnAssignment> Deveel.Data.Sql.Statements.UpdateStatement.Assignments

getprivate set

Definition at line 46 of file UpdateStatement.cs.

int Deveel.Data.Sql.Statements.UpdateStatement.Limit

getset

Definition at line 44 of file UpdateStatement.cs.

string Deveel.Data.Sql.Statements.UpdateStatement.TableName

getprivate set

Definition at line 40 of file UpdateStatement.cs.

SqlExpression Deveel.Data.Sql.Statements.UpdateStatement.WherExpression

getprivate set

Definition at line 42 of file UpdateStatement.cs.

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The documentation for this class was generated from the following file:

• /var/calculate/remote/distfiles/egit-src/deveeldb.git/src/deveeldb/Deveel.Data.Sql.Statements/UpdateStatement.cs