org.openrdf.sail.rdbms.algebra

Class SelectQuery

java.lang.Object

org.openrdf.query.algebra.QueryModelNodeBase

org.openrdf.sail.rdbms.algebra.base.RdbmsQueryModelNodeBase

org.openrdf.sail.rdbms.algebra.SelectQuery

All Implemented Interfaces:

Serializable, Cloneable, QueryModelNode, TupleExpr

public class SelectQuery
extends RdbmsQueryModelNodeBase
implements TupleExpr

An SQL query.

Author:

James Leigh

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SelectQuery.OrderElem

Constructor Summary

Constructors

Constructor and Description
SelectQuery()

Method Summary

Modifier and Type	Method and Description
void	addFilter(SqlExpr sql)
void	addJoin(SelectQuery right)
void	addLeftJoin(SelectQuery right)
void	addOrder(SqlExpr order, boolean isAscending)
void	addSqlSelectVar(SelectProjection node)
SelectQuery	clone() Returns a (deep) clone of this query model node.
Set<String>	getAssuredBindingNames() Gets the names of the bindings that are guaranteed to be present in the results produced by this tuple expression.
Set<String>	getBindingNames() Gets the names of the bindings that are, or can be, returned by this tuple expression when it is evaluated.
Collection<String>	getBindingNames(ColumnVar var)
List<SqlExpr>	getFilters()
FromItem	getFrom()
FromItem	getFromItem(String alias)
Long	getLimit()
Long	getOffset()
List<SelectQuery.OrderElem>	getOrderElems()
Collection<ColumnVar>	getProjections()
SelectProjection	getSelectProjection(String name)
Collection<SelectProjection>	getSqlSelectVar()
ColumnVar	getVar(String varName)
Map<String,ColumnVar>	getVarMap()
Collection<ColumnVar>	getVars()
boolean	hasSqlSelectVar(SelectProjection node)
boolean	hasSqlSelectVarName(String name)
boolean	isComplex()
boolean	isDistinct()
void	removeFilter(SqlExpr sqlExpr)
void	replaceChildNode(QueryModelNode current, QueryModelNode replacement) Default implementation of QueryModelNode.replaceChildNode(QueryModelNode, QueryModelNode) that throws an IllegalArgumentException indicating that current is not a child node of this node.
void	setBindingVars(Map<String,String> bindingVars)
void	setDistinct(boolean b)
void	setFrom(FromItem from)
void	setLimit(Long limit)
void	setOffset(Long offset)
void	setSqlSelectVar(Collection<SelectProjection> projections)
<X extends Exception> void	visit(RdbmsQueryModelVisitorBase<X> visitor)
<X extends Exception> void	visitChildren(QueryModelVisitor<X> visitor) Dummy implementation of QueryModelNode.visitChildren(org.openrdf.query.algebra.QueryModelVisitor<X>) that does nothing.

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

visit

Methods inherited from class org.openrdf.query.algebra.QueryModelNodeBase

getParentNode, getSignature, nullEquals, replaceNodeInList, replaceWith, setParentNode, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.openrdf.query.algebra.QueryModelNode

equals, getParentNode, getSignature, replaceWith, setParentNode, toString, visit

Constructor Detail

SelectQuery

public SelectQuery()

Method Detail

isDistinct

public boolean isDistinct()

setDistinct

public void setDistinct(boolean b)

isComplex

public boolean isComplex()

getFrom

public FromItem getFrom()

setFrom

public void setFrom(FromItem from)

getOrderElems

public List<SelectQuery.OrderElem> getOrderElems()

addOrder

public void addOrder(SqlExpr order,
                     boolean isAscending)

getOffset

public Long getOffset()

setOffset

public void setOffset(Long offset)

getLimit

public Long getLimit()

setLimit

public void setLimit(Long limit)

getBindingNames

public Collection<String> getBindingNames(ColumnVar var)

getBindingNames

public Set<String> getBindingNames()

Description copied from interface: TupleExpr

Gets the names of the bindings that are, or can be, returned by this tuple expression when it is evaluated.

Specified by:

getBindingNames in interface TupleExpr

Returns:

A set of binding names.

getAssuredBindingNames

public Set<String> getAssuredBindingNames()

Description copied from interface: TupleExpr

Gets the names of the bindings that are guaranteed to be present in the results produced by this tuple expression.

Specified by:

getAssuredBindingNames in interface TupleExpr

Returns:

A set of binding names.

setBindingVars

public void setBindingVars(Map<String,String> bindingVars)

getSqlSelectVar

public Collection<SelectProjection> getSqlSelectVar()

setSqlSelectVar

public void setSqlSelectVar(Collection<SelectProjection> projections)

getSelectProjection

public SelectProjection getSelectProjection(String name)

replaceChildNode

public void replaceChildNode(QueryModelNode current,
                             QueryModelNode replacement)

Description copied from class: QueryModelNodeBase

Default implementation of QueryModelNode.replaceChildNode(QueryModelNode, QueryModelNode) that throws an IllegalArgumentException indicating that current is not a child node of this node.

Specified by:

replaceChildNode in interface QueryModelNode

Overrides:

replaceChildNode in class QueryModelNodeBase

Parameters:

current - The current child node.

replacement - The new child node.

visitChildren

public <X extends Exception> void visitChildren(QueryModelVisitor<X> visitor)
                                         throws X extends Exception

Description copied from class: QueryModelNodeBase

Dummy implementation of QueryModelNode.visitChildren(org.openrdf.query.algebra.QueryModelVisitor<X>) that does nothing. Subclasses should override this method when they have child nodes.

Specified by:

visitChildren in interface QueryModelNode

Overrides:

visitChildren in class QueryModelNodeBase

Throws:

X extends Exception

clone

public SelectQuery clone()

Description copied from interface: QueryModelNode

Returns a (deep) clone of this query model node. This method recursively clones the entire node tree, starting from this nodes.

Specified by:

clone in interface QueryModelNode

Specified by:

clone in interface TupleExpr

Overrides:

clone in class QueryModelNodeBase

Returns:

A deep clone of this query model node.

visit

public <X extends Exception> void visit(RdbmsQueryModelVisitorBase<X> visitor)
                                 throws X extends Exception

Specified by:

visit in class RdbmsQueryModelNodeBase

Throws:

X extends Exception

hasSqlSelectVar

public boolean hasSqlSelectVar(SelectProjection node)

hasSqlSelectVarName

public boolean hasSqlSelectVarName(String name)

addSqlSelectVar

public void addSqlSelectVar(SelectProjection node)

getProjections

public Collection<ColumnVar> getProjections()

getVars

public Collection<ColumnVar> getVars()

getVar

public ColumnVar getVar(String varName)

addFilter

public void addFilter(SqlExpr sql)

addJoin

public void addJoin(SelectQuery right)

addLeftJoin

public void addLeftJoin(SelectQuery right)

getFromItem

public FromItem getFromItem(String alias)

getFilters

public List<SqlExpr> getFilters()

removeFilter

public void removeFilter(SqlExpr sqlExpr)

getVarMap

public Map<String,ColumnVar> getVarMap()