public class FilterOptimizer extends AbstractQueryModelVisitor<OptimizationException> implements FedXOptimizer
| Modifier and Type | Class and Description |
|---|---|
protected static class |
FilterOptimizer.FilterBindingFinder |
protected static class |
FilterOptimizer.FilterExprInsertVisitor |
protected static class |
FilterOptimizer.VarFinder |
| Constructor and Description |
|---|
FilterOptimizer() |
| Modifier and Type | Method and Description |
|---|---|
protected void |
getConjunctiveExpressions(ValueExpr expr,
List<ValueExpr> conjExpr)
add the conjunctive expressions to specified list, has recursive step.
|
protected boolean |
isCompatibleExpr(ValueExpr e)
returns true if this filter can be used for optimization.
|
void |
meet(Filter filter) |
void |
meet(Service node) |
void |
optimize(TupleExpr tupleExpr)
Optimize the provided tuple expression
|
meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meetBinaryTupleOperator, meetBinaryValueOperator, meetCompareSubQueryValueOperator, meetNAryValueOperator, meetNode, meetOther, meetSubQueryValueOperator, meetUnaryTupleOperator, meetUnaryValueOperator, meetUpdateExprpublic void optimize(TupleExpr tupleExpr)
FedXOptimizeroptimize in interface FedXOptimizerpublic void meet(Filter filter)
meet in interface QueryModelVisitor<OptimizationException>meet in class AbstractQueryModelVisitor<OptimizationException>public void meet(Service node) throws OptimizationException
meet in interface QueryModelVisitor<OptimizationException>meet in class AbstractQueryModelVisitor<OptimizationException>OptimizationExceptionprotected void getConjunctiveExpressions(ValueExpr expr, List<ValueExpr> conjExpr)
expr - the expr, in the best case in CNFconjExpr - the list to which expressions will be addedprotected boolean isCompatibleExpr(ValueExpr e)
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