Package org.yamcs.yarch

Interface FilterableTarget

All Known Implementing Classes:

TableWalkerBuilder, TupleSourceExpression

public interface FilterableTarget

Method Summary

Modifier and Type	Method	Description
void	addInFilter(ColumnExpression cexpr, boolean negation, Set<Object> values)	same as addRelOpFilter(ColumnExpression, RelOp, Object) but adds a restrictions for a set of values resulted from a where x in (a,b,c) condition
void	addRelOpFilter(ColumnExpression cexpr, RelOp relOp, Object value)	Tries to add a restriction for the rows to be selected/updated/deleted.

Method Details

addRelOpFilter

void addRelOpFilter(ColumnExpression cexpr,
 RelOp relOp,
 Object value)
             throws StreamSqlException

Tries to add a restriction for the rows to be selected/updated/deleted. This will implement optimisations to avoid scanning the table row by row.

Typically it works if the condition refers to the primary key.

Parameters:

cexpr -

relOp -

value -

Throws:

StreamSqlException

addInFilter

void addInFilter(ColumnExpression cexpr,
 boolean negation,
 Set<Object> values)
          throws StreamSqlException

same as addRelOpFilter(ColumnExpression, RelOp, Object) but adds a restrictions for a set of values resulted from a where x in (a,b,c) condition

Parameters:

cexpr -

negation -

values -

Throws:

StreamSqlException