org.openrdf.sail.rdbms.optimizers
Class SelectQueryOptimizer

java.lang.Object
  org.openrdf.query.algebra.helpers.QueryModelVisitorBase<X>
      org.openrdf.sail.rdbms.algebra.base.RdbmsQueryModelVisitorBase<RuntimeException>
          org.openrdf.sail.rdbms.optimizers.SelectQueryOptimizer

All Implemented Interfaces:

QueryOptimizer, QueryModelVisitor<RuntimeException>

public class SelectQueryOptimizer
extends RdbmsQueryModelVisitorBase<RuntimeException>
implements QueryOptimizer

Rewrites the core algebra model with a relation optimised model, using SQL.

Author:

James Leigh

Constructor Summary

SelectQueryOptimizer()

Method Summary

void	meet(Distinct node)
void	meet(Filter node)
void	meet(Join node)
void	meet(LeftJoin node)
void	meet(Order node)
void	meet(Projection node)
void	meet(Slice node)
void	meet(StatementPattern sp)
void	meet(Union node)
void	optimize(TupleExpr tupleExpr, Dataset dataset, BindingSet bindings)
void	setIdSequence(IdSequence ids)
void	setSqlExprFactory(SqlExprFactory sql)
void	setTransTableManager(TransTableManager statements)
void	setValueFactory(RdbmsValueFactory vf)

Methods inherited from class org.openrdf.sail.rdbms.algebra.base.RdbmsQueryModelVisitorBase

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, meetBinarySqlOperator, meetFromItem, meetSqlConstant, meetSqlExpr, meetUnarySqlOperator, meetValueColumnBase

Methods inherited from class org.openrdf.query.algebra.helpers.QueryModelVisitorBase

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, meetNode, meetOther, meetSubQueryValueOperator, meetUnaryTupleOperator, meetUnaryValueOperator

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SelectQueryOptimizer

public SelectQueryOptimizer()

Method Detail

setSqlExprFactory

public void setSqlExprFactory(SqlExprFactory sql)

setValueFactory

public void setValueFactory(RdbmsValueFactory vf)

setTransTableManager

public void setTransTableManager(TransTableManager statements)

setIdSequence

public void setIdSequence(IdSequence ids)

optimize

public void optimize(TupleExpr tupleExpr,
                     Dataset dataset,
                     BindingSet bindings)

Specified by:

optimize in interface QueryOptimizer

meet

public void meet(Distinct node)
          throws RuntimeException

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class QueryModelVisitorBase<RuntimeException>

Throws:

RuntimeException

meet

public void meet(Union node)
          throws RuntimeException

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class QueryModelVisitorBase<RuntimeException>

Throws:

RuntimeException

meet

public void meet(Join node)
          throws RuntimeException

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class QueryModelVisitorBase<RuntimeException>

Throws:

RuntimeException

meet

public void meet(LeftJoin node)
          throws RuntimeException

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class QueryModelVisitorBase<RuntimeException>

Throws:

RuntimeException

meet

public void meet(StatementPattern sp)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class QueryModelVisitorBase<RuntimeException>

meet

public void meet(Filter node)
          throws RuntimeException

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class QueryModelVisitorBase<RuntimeException>

Throws:

RuntimeException

meet

public void meet(Projection node)
          throws RuntimeException

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class QueryModelVisitorBase<RuntimeException>

Throws:

RuntimeException

meet

public void meet(Slice node)
          throws RuntimeException

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class QueryModelVisitorBase<RuntimeException>

Throws:

RuntimeException

meet

public void meet(Order node)
          throws RuntimeException

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class QueryModelVisitorBase<RuntimeException>

Throws:

RuntimeException