Class GroupGraphPattern

java.lang.Object

org.eclipse.rdf4j.sparqlbuilder.core.QueryElementCollection<GraphPattern>

org.eclipse.rdf4j.sparqlbuilder.graphpattern.GroupGraphPattern

All Implemented Interfaces:

QueryElement, GraphPattern

Direct Known Subclasses:

FilterExistsGraphPattern, MinusGraphPattern

class GroupGraphPattern
extends QueryElementCollection<GraphPattern>
implements GraphPattern

A SPARQL Group Graph Pattern

See Also:

• SPARQL Group Graph Patterns

Field Summary

Fields

Modifier and Type	Field	Description
private List<Filter>	filters
private Optional<GraphName>	from
private static final String	GRAPH
protected boolean	isOptional
private static final String	OPTIONAL

Fields inherited from class QueryElementCollection

elements

Constructor Summary

Constructors

Constructor	Description
GroupGraphPattern()
GroupGraphPattern(boolean isOptional)
GroupGraphPattern(GraphPattern original)

Method Summary

Modifier and Type	Method	Description
GroupGraphPattern	and(GraphPattern... patterns)	Convert this graph pattern into a group graph pattern, combining this graph pattern with the given patterns:
private boolean	bracketInner()
protected void	copy(GroupGraphPattern original)
GroupGraphPattern	filter(Expression<?> constraint)	Convert this graph pattern into a group graph pattern and add a filter:
GroupGraphPattern	from(GraphName name)	Convert this graph pattern into a named group graph pattern:
String	getQueryString()
boolean	isEmpty()
private static boolean	isGGP(GraphPattern pattern)
GroupGraphPattern	optional(boolean isOptional)	Specify if this graph pattern should be optional.

Methods inherited from class QueryElementCollection

addElements, addElements

Methods inherited from class Object

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

Methods inherited from interface GraphPattern

filterExists, filterExists, filterNotExists, minus, optional, union

Field Details

OPTIONAL

private static final String OPTIONAL

See Also:

• Constant Field Values

GRAPH

private static final String GRAPH

See Also:

• Constant Field Values

from

private Optional<GraphName> from

filters

private List<Filter> filters

isOptional

protected boolean isOptional

Constructor Details

GroupGraphPattern

GroupGraphPattern()

GroupGraphPattern

GroupGraphPattern(boolean isOptional)

GroupGraphPattern

GroupGraphPattern(GraphPattern original)

Method Details

copy

protected void copy(GroupGraphPattern original)

and

public GroupGraphPattern and(GraphPattern... patterns)

Description copied from interface: GraphPattern

Convert this graph pattern into a group graph pattern, combining this graph pattern with the given patterns:

{
  thisPattern .
  pattern1 .
  pattern2 .
  ...
  patternN
}

Specified by:

and in interface GraphPattern

Parameters:

patterns - the patterns to add

Returns:

the new GraphPattern instance

See Also:

• SPARQL Group Graph Pattern

optional

public GroupGraphPattern optional(boolean isOptional)

Description copied from interface: GraphPattern

Specify if this graph pattern should be optional.

NOTE: This converts this graph pattern into a group graph pattern.

Specified by:

optional in interface GraphPattern

Parameters:

isOptional - if this graph pattern should be optional or not

Returns:

the new GraphPattern instance

See Also:

• SPARQL Optional Graph Patterns

from

public GroupGraphPattern from(GraphName name)

Description copied from interface: GraphPattern

Convert this graph pattern into a named group graph pattern:

GRAPH graphName { thisPattern }

Specified by:

from in interface GraphPattern

Parameters:

name - the name to specify

Returns:

the new GraphPattern instance

See Also:

• Specifying Datasets in SPARQL Queries

filter

public GroupGraphPattern filter(Expression<?> constraint)

Description copied from interface: GraphPattern

Convert this graph pattern into a group graph pattern and add a filter:

{
  thisPattern
  FILTER { constraint }
}

Specified by:

filter in interface GraphPattern

Parameters:

constraint - the filter constraint

Returns:

the new GraphPattern instance

See Also:

• SPARQL Filter

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface GraphPattern

Overrides:

isEmpty in class QueryElementCollection<GraphPattern>

Returns:

if this collection is empty

getQueryString

public String getQueryString()

Specified by:

getQueryString in interface QueryElement

Overrides:

getQueryString in class QueryElementCollection<GraphPattern>

Returns:

the String representing the SPARQL syntax of this element

isGGP

private static boolean isGGP(GraphPattern pattern)

bracketInner

private boolean bracketInner()