Class SparqlTupleExprRenderer

java.lang.Object

org.eclipse.rdf4j.query.algebra.helpers.AbstractQueryModelVisitor<Exception>

org.eclipse.rdf4j.queryrender.BaseTupleExprRenderer

org.eclipse.rdf4j.queryrender.sparql.SparqlTupleExprRenderer

All Implemented Interfaces:

QueryModelVisitor<Exception>

public final class SparqlTupleExprRenderer
extends BaseTupleExprRenderer

Extends the BaseTupleExprRenderer to provide support for rendering tuple expressions as SPARQL queries.

Author:

Michael Grove

Field Summary

Fields inherited from class BaseTupleExprRenderer

mDistinct, mExtensions, mLimit, mOffset, mOrdering, mProjection, mReduced

Modifier and Type	Field	Description
protected boolean	mDistinct	Whether or not the query is distinct
protected Map<String, ValueExpr>	mExtensions	A map of the extensions specified in the query.
protected long	mLimit	The limit of results for the query, or -1 for no limit
protected long	mOffset	The query offset, or -1 for no offset
protected List<OrderElem>	mOrdering	The elements specified in the order by clause of the query
protected List<ProjectionElemList>	mProjection	The list of elements include in the projection of the query
protected boolean	mReduced	Whether or not the query is reduced

Constructor Summary

Constructors

Constructor	Description
SparqlTupleExprRenderer()

Method Summary

Modifier and Type	Method	Description
void	meet(AggregateFunctionCall node)
void	meet(And node)
void	meet(ArbitraryLengthPath node)
void	meet(Bound node)
void	meet(Compare node)
void	meet(Datatype node)
void	meet(Difference theOp)
void	meet(Extension node)
void	meet(ExtensionElem node)
void	meet(Filter theFilter)
void	meet(FunctionCall node)
void	meet(If theOp)
void	meet(In node)
void	meet(Intersection theOp)
void	meet(IRIFunction node)
void	meet(IsBNode node)
void	meet(IsLiteral node)
void	meet(IsNumeric node)
void	meet(IsURI node)
void	meet(Join theJoin)
void	meet(Lang node)
void	meet(LangMatches node)
void	meet(LeftJoin theJoin)
void	meet(Or node)
void	meet(Regex node)
void	meet(SameTerm node)
void	meet(StatementPattern thePattern)
void	meet(Str node)
void	meet(Union theOp)
void	meet(ValueConstant node)
void	meet(Var node)
String	render(TupleExpr theExpr)	Render the TupleExpr as a query or query fragment depending on what kind of TupleExpr it is
protected String	renderValueExpr(ValueExpr theExpr)	Render the given ValueExpr
void	reset()	Reset the state of the renderer

Methods inherited from class BaseTupleExprRenderer

getExtensions, getLimit, getOffset, getOrdering, getProjection, isDistinct, isReduced, isSelect, isSPOElemList, meet, meet, meet, meet, meet, render, scrubVarName, toStatementPattern

Modifier and Type	Method	Description
Map<String, ValueExpr>	getExtensions()
long	getLimit()
long	getOffset()
List<OrderElem>	getOrdering()
List<ProjectionElemList>	getProjection()
boolean	isDistinct()
boolean	isReduced()
protected boolean	isSelect()	Returns whether or not the results of scanning the query model indicates that this represents a select query
static boolean	isSPOElemList(ProjectionElemList theList)	Return whether or not this projection looks like an spo binding for a construct query
void	meet(Distinct theDistinct)
void	meet(OrderElem theOrderElem)
void	meet(ProjectionElemList theProjectionElemList)
void	meet(Reduced theReduced)
void	meet(Slice theSlice)
String	render(ParsedQuery theQuery)	Render the ParsedQuery as a query string
static String	scrubVarName(String theName)	Scrub any illegal characters out of the variable name
StatementPattern	toStatementPattern(ProjectionElemList theList)	Turn a ProjectionElemList for a construct query projection (three elements aliased as 'subject', 'predicate' and 'object' in that order) into a StatementPattern.

Methods inherited from class AbstractQueryModelVisitor

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, meetUpdateExpr

Modifier and Type	Method	Description
void	meet(Add node)
void	meet(Avg node)
void	meet(BindingSetAssignment node)
void	meet(BNodeGenerator node)
void	meet(Clear node)
void	meet(Coalesce node)
void	meet(CompareAll node)
void	meet(CompareAny node)
void	meet(Copy node)
void	meet(Count node)
void	meet(Create node)
void	meet(DeleteData node)
void	meet(DescribeOperator node)
void	meet(EmptySet node)
void	meet(Exists node)
void	meet(Group node)
void	meet(GroupConcat node)
void	meet(GroupElem node)
void	meet(InsertData node)
void	meet(IsResource node)
void	meet(Label node)
void	meet(ListMemberOperator node)
void	meet(Load node)
void	meet(LocalName node)
void	meet(MathExpr node)
void	meet(Max node)
void	meet(Min node)
void	meet(Modify node)
void	meet(Move node)
void	meet(MultiProjection node)
void	meet(Namespace node)
void	meet(Not node)
void	meet(Order node)
void	meet(Projection node)
void	meet(ProjectionElem node)
void	meet(QueryRoot node)
void	meet(Sample node)
void	meet(Service node)
void	meet(SingletonSet node)
void	meet(Sum node)
void	meet(TripleRef node)
void	meet(ValueExprTripleRef node)
void	meet(ZeroLengthPath node)
protected void	meetBinaryTupleOperator(BinaryTupleOperator node)	Method called by all meet methods with a BinaryTupleOperator node as argument.
protected void	meetBinaryValueOperator(BinaryValueOperator node)	Method called by all meet methods with a BinaryValueOperator node as argument.
protected void	meetCompareSubQueryValueOperator(CompareSubQueryValueOperator node)	Method called by all meet methods with a CompareSubQueryValueOperator node as argument.
protected void	meetNAryValueOperator(NAryValueOperator node)	Method called by all meet methods with a NAryValueOperator node as argument.
protected void	meetNode(QueryModelNode node)	Method called by all of the other meet methods that are not overridden in subclasses.
void	meetOther(QueryModelNode node)
protected void	meetSubQueryValueOperator(SubQueryValueOperator node)	Method called by all meet methods with a SubQueryValueOperator node as argument.
protected void	meetUnaryTupleOperator(UnaryTupleOperator node)	Method called by all meet methods with a UnaryTupleOperator node as argument.
protected void	meetUnaryValueOperator(UnaryValueOperator node)	Method called by all meet methods with a UnaryValueOperator node as argument.
protected void	meetUpdateExpr(UpdateExpr node)	Method called by all meet methods with a UpdateExpr node as argument.

Methods inherited from class Object

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

Constructor Details

SparqlTupleExprRenderer

public SparqlTupleExprRenderer()

Method Details

reset

public void reset()

Reset the state of the renderer

Overrides:

reset in class BaseTupleExprRenderer

render

public String render(TupleExpr theExpr)
              throws Exception

Render the TupleExpr as a query or query fragment depending on what kind of TupleExpr it is

Specified by:

render in class BaseTupleExprRenderer

Parameters:

theExpr - the expression to render

Returns:

the TupleExpr rendered in the query language syntax

Throws:

Exception - if there is an error while rendering

renderValueExpr

protected String renderValueExpr(ValueExpr theExpr)
                          throws Exception

Render the given ValueExpr

Specified by:

renderValueExpr in class BaseTupleExprRenderer

Parameters:

theExpr - the expr to render

Returns:

the rendered expression

Throws:

Exception - if there is an error while rendering

meet

public void meet(Join theJoin)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(LeftJoin theJoin)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(Union theOp)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(Difference theOp)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(Intersection theOp)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(Filter theFilter)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(StatementPattern thePattern)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class BaseTupleExprRenderer

Throws:

Exception

meet

public void meet(Extension node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(ExtensionElem node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class BaseTupleExprRenderer

Throws:

Exception

meet

public void meet(FunctionCall node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(AggregateFunctionCall node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(And node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(Or node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(Compare node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(Bound node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(If theOp)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(In node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(SameTerm node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(IsURI node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(IsBNode node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(IsLiteral node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(IsNumeric node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(Datatype node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(IRIFunction node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(Str node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(Regex node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(Lang node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(LangMatches node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(ArbitraryLengthPath node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(ValueConstant node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>

Throws:

Exception

meet

public void meet(Var node)
          throws Exception

Specified by:

meet in interface QueryModelVisitor<Exception>

Overrides:

meet in class AbstractQueryModelVisitor<Exception>