org.nuxeo.ecm.platform.relations

Class CoreGraph

java.lang.Object

org.nuxeo.ecm.platform.relations.CoreGraph

All Implemented Interfaces:

Serializable, Graph

public class CoreGraph
extends Object
implements Graph

Relation graph implementation delegating to the core.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	CoreGraph.NodeAsString Only one of those is filled.
protected class	CoreGraph.ResourceFinder
protected class	CoreGraph.SizeFinder
protected class	CoreGraph.StatementAdder
protected class	CoreGraph.StatementFinder
protected class	CoreGraph.StatementRemover
static class	CoreGraph.Subjects Fake Node type used to pass down multiple nodes into whereBuilder.

Field Summary

Fields

Modifier and Type	Field and Description
protected static Statement	ALL
static String	BLANK_NS
static String	COMMENT_NAMESPACE Has no final slash (compat).
static String	DC_CREATED
static String	DC_CREATOR
static String	DC_DESCRIPTION
static String	DC_MODIFIED
static String	DC_TITLE
static String[]	DOC_NAMESPACES
protected String	docType
static String	DOCUMENT_NAMESPACE
static String	DOCUMENT_NAMESPACE2 Without final slash (compat).
protected static List<Statement>	EMPTY_STATEMENTS
protected String	name
List<String>	namespaceList
Map<String,String>	namespaces
static String	OPTION_DOCTYPE
static String	REL_PREDICATE
static String	REL_SOURCE_ID
static String	REL_SOURCE_URI
static String	REL_TARGET_ID
static String	REL_TARGET_STRING
static String	REL_TARGET_URI
static String	REL_TYPE
protected CoreSession	session
static Pattern	SPARQL_PO_S
static Pattern	SPARQL_S_PO
static Pattern	SPARQL_SPO_PO

Constructor Summary

Constructors

Constructor and Description
CoreGraph(CoreSession session) A graph with this base session.

Method Summary

Modifier and Type	Method and Description
void	add(List<Statement> statements) Adds given list of Statement objects to the graph.
void	add(Statement statement) Adds the statement object to the graph.
void	clear() Clears the graph, removing all statements in it.
protected static String	getAuthor(Statement statement)
protected static String	getComment(Statement statement)
protected static Date	getCreationDate(Statement statement)
protected static Date	getDateProperty(Statement statement, Resource prop)
protected static String	getDefaultRepositoryName()
protected static Date	getModificationDate(Statement statement)
Map<String,String>	getNamespaces() Returns namespaces for the graph.
protected static CoreGraph.NodeAsString	getNodeAsString(Node node)
List<Node>	getObjects(Node subject, Node predicate) Gets items matching the statement pattern (subject, predicate, null).
List<Node>	getPredicates(Node subject, Node object) Gets items matching the statement pattern (subject, null, object).
List<Statement>	getStatements() Returns all statements in the graph.
List<Statement>	getStatements(Node subject, Node predicate, Node object) Returns all statements in the graph matching the pattern.
List<Statement>	getStatements(Statement statement) Returns all statements in the graph matching the pattern.
protected static String	getStringProperty(Statement statement, Resource prop)
List<Node>	getSubjects(Node predicate, Node object) Get items matching the statement pattern (null, predicate, object).
boolean	hasResource(Resource resource) Returns true if given resource appears in any statement of the graph.
boolean	hasStatement(Statement statement) Returns true if given statement pattern is in the graph.
protected static String	localNameToId(String localName)
QueryResult	query(String queryString, String language, String baseURI) Query the graph using a base URI.
int	queryCount(String queryString, String language, String baseURI) Counts the number of results of a query.
boolean	read(InputStream in, String lang, String base) Parses source into the graph.
boolean	read(String path, String lang, String base) Parses source into the graph.
void	remove(List<Statement> statements) Removes given list of Statement objects from the graph.
void	remove(Statement statement) Removes the statement object from the graph.
protected static void	setAuthor(Statement statement, String author)
protected static void	setComment(Statement statement, String comment)
protected static void	setCreationDate(Statement statement, Calendar created)
protected static void	setDateProperty(Statement statement, Resource prop, Calendar date)
void	setDescription(GraphDescription graphDescription) Sets the graph description.
protected static void	setModificationDate(Statement statement, Calendar modified)
protected void	setOptions(Map<String,String> options)
protected static void	setStringProperty(Statement statement, Resource prop, String string)
Long	size() Returns the number of statements in the graph.
protected String	whereBuilder(String query, Statement statement)
boolean	write(OutputStream out, String lang, String base) Serializes graph.
boolean	write(String path, String lang, String base) Serializes graph.

Methods inherited from class java.lang.Object

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

Field Detail

OPTION_DOCTYPE

public static final String OPTION_DOCTYPE

See Also:

Constant Field Values

REL_TYPE

public static final String REL_TYPE

See Also:

Constant Field Values

REL_PREDICATE

public static final String REL_PREDICATE

See Also:

Constant Field Values

REL_SOURCE_ID

public static final String REL_SOURCE_ID

See Also:

Constant Field Values

REL_SOURCE_URI

public static final String REL_SOURCE_URI

See Also:

Constant Field Values

REL_TARGET_ID

public static final String REL_TARGET_ID

See Also:

Constant Field Values

REL_TARGET_URI

public static final String REL_TARGET_URI

See Also:

Constant Field Values

REL_TARGET_STRING

public static final String REL_TARGET_STRING

See Also:

Constant Field Values

DC_CREATED

public static final String DC_CREATED

See Also:

Constant Field Values

DC_CREATOR

public static final String DC_CREATOR

See Also:

Constant Field Values

DC_MODIFIED

public static final String DC_MODIFIED

See Also:

Constant Field Values

DC_TITLE

public static final String DC_TITLE

See Also:

Constant Field Values

DC_DESCRIPTION

public static final String DC_DESCRIPTION

See Also:

Constant Field Values

BLANK_NS

public static final String BLANK_NS

See Also:

Constant Field Values

DOCUMENT_NAMESPACE

public static final String DOCUMENT_NAMESPACE

See Also:

Constant Field Values

DOCUMENT_NAMESPACE2

public static final String DOCUMENT_NAMESPACE2

Without final slash (compat).

COMMENT_NAMESPACE

public static final String COMMENT_NAMESPACE

Has no final slash (compat).

See Also:

Constant Field Values

DOC_NAMESPACES

public static final String[] DOC_NAMESPACES

EMPTY_STATEMENTS

protected static final List<Statement> EMPTY_STATEMENTS

ALL

protected static final Statement ALL

session

protected CoreSession session

name

protected String name

docType

protected String docType

namespaces

public Map<String,String> namespaces

namespaceList

public List<String> namespaceList

SPARQL_SPO_PO

public static final Pattern SPARQL_SPO_PO

SPARQL_PO_S

public static final Pattern SPARQL_PO_S

SPARQL_S_PO

public static final Pattern SPARQL_S_PO

Constructor Detail

CoreGraph

public CoreGraph(CoreSession session)

A graph with this base session. An unrestricted session will be opened based on it.

Method Detail

setDescription

public void setDescription(GraphDescription graphDescription)

Description copied from interface: Graph

Sets the graph description.

Specified by:

setDescription in interface Graph

setOptions

protected void setOptions(Map<String,String> options)

getNamespaces

public Map<String,String> getNamespaces()

Description copied from interface: Graph

Returns namespaces for the graph.

Namespaces are prefix/namespace bindings, as rdf for http://www.w3.org/1999/02/22-rdf-syntax-ns#.

Specified by:

getNamespaces in interface Graph

size

public Long size()

Description copied from interface: Graph

Returns the number of statements in the graph.

Specified by:

size in interface Graph

Returns:

number of statements as a Long

clear

public void clear()

Description copied from interface: Graph

Clears the graph, removing all statements in it.

Specified by:

clear in interface Graph

add

public void add(Statement statement)

Description copied from interface: Graph

Adds the statement object to the graph.

Specified by:

add in interface Graph

Parameters:

statement - statement to add

add

public void add(List<Statement> statements)

Description copied from interface: Graph

Adds given list of Statement objects to the graph.

Specified by:

add in interface Graph

Parameters:

statements - list of Statement instances to add

remove

public void remove(Statement statement)

Description copied from interface: Graph

Removes the statement object from the graph.

Specified by:

remove in interface Graph

Parameters:

statement - statement to remove

remove

public void remove(List<Statement> statements)

Description copied from interface: Graph

Removes given list of Statement objects from the graph.

Specified by:

remove in interface Graph

Parameters:

statements - List of Statement instances to remove

getStatements

public List<Statement> getStatements()

Description copied from interface: Graph

Returns all statements in the graph.

Specified by:

getStatements in interface Graph

Returns:

list of Statement instances

getStatements

public List<Statement> getStatements(Node subject,
                                     Node predicate,
                                     Node object)

Description copied from interface: Graph

Returns all statements in the graph matching the pattern.

Specified by:

getStatements in interface Graph

Returns:

list of Statement instances matching the pattern

getStatements

public List<Statement> getStatements(Statement statement)

Description copied from interface: Graph

Returns all statements in the graph matching the pattern.

Specified by:

getStatements in interface Graph

Parameters:

statement - pattern to match, can hold null nodes as wildcards

Returns:

list of Statement instances matching the pattern

getSubjects

public List<Node> getSubjects(Node predicate,
                              Node object)

Description copied from interface: Graph

Get items matching the statement pattern (null, predicate, object).

Specified by:

getSubjects in interface Graph

Parameters:

predicate - predicate pattern, null accepted

object - object pattern, null accepted

Returns:

list of subjects

getPredicates

public List<Node> getPredicates(Node subject,
                                Node object)

Description copied from interface: Graph

Gets items matching the statement pattern (subject, null, object).

Specified by:

getPredicates in interface Graph

Parameters:

subject - subject pattern, null accepted

object - object pattern, null accepted

Returns:

list of predicates

getObjects

public List<Node> getObjects(Node subject,
                             Node predicate)

Description copied from interface: Graph

Gets items matching the statement pattern (subject, predicate, null).

Specified by:

getObjects in interface Graph

Parameters:

subject - subject pattern, null accepted

predicate - predicate pattern, null accepted

Returns:

list of node objects

hasStatement

public boolean hasStatement(Statement statement)

Description copied from interface: Graph

Returns true if given statement pattern is in the graph.

Specified by:

hasStatement in interface Graph

Parameters:

statement - statement pattern, can use null as wild cards

Returns:

true or false

hasResource

public boolean hasResource(Resource resource)

Description copied from interface: Graph

Returns true if given resource appears in any statement of the graph.

Specified by:

hasResource in interface Graph

Returns:

true or false

query

public QueryResult query(String queryString,
                         String language,
                         String baseURI)

Description copied from interface: Graph

Query the graph using a base URI.

Specified by:

query in interface Graph

Parameters:

queryString - the query string

language - the query language (sparql, rdql,...)

baseURI - the base URI to use for query

Returns:

QueryResult instance

queryCount

public int queryCount(String queryString,
                      String language,
                      String baseURI)

Description copied from interface: Graph

Counts the number of results of a query.

Specified by:

queryCount in interface Graph

Parameters:

queryString - the query string

language - the query language (sparql, rdql,...)

baseURI - the base URI to use for query

Returns:

the count

read

public boolean read(String path,
                    String lang,
                    String base)

Description copied from interface: Graph

Parses source into the graph.

Specified by:

read in interface Graph

Parameters:

path - path on file system where to take the serialization file

lang - format for the input serialization, may be "RDF/XML", "RDF/XML-ABBREV", "N-TRIPLE" and "N3". The default value, represented by null, is "RDF/XML".

base - base uri to be used when converting relative uris to absolute uris, may be null. If set to "", allows relative uris to be used in the model.

Returns:

true on success, else false

write

public boolean write(String path,
                     String lang,
                     String base)

Description copied from interface: Graph

Serializes graph.

Specified by:

write in interface Graph

Parameters:

path - path on file system where to put the serialization file

lang - format for the input serialization, may be "RDF/XML", "RDF/XML-ABBREV", "N-TRIPLE" and "N3". The default value, represented by null, is "RDF/XML".

base - base uri to be used when converting relative uris to absolute uris, may be null. If set to "", allows relative uris to be used in the model.

Returns:

true on success, else false

read

public boolean read(InputStream in,
                    String lang,
                    String base)

Description copied from interface: Graph

Parses source into the graph.

Specified by:

read in interface Graph

Parameters:

in - input stream

lang - format for the input serialization, may be "RDF/XML", "RDF/XML-ABBREV", "N-TRIPLE" and "N3". The default value, represented by null, is "RDF/XML".

base - base uri to be used when converting relative uris to absolute uris, may be null. If set to "", allows relative uris to be used in the model.

Returns:

true on success, else false

write

public boolean write(OutputStream out,
                     String lang,
                     String base)

Description copied from interface: Graph

Serializes graph.

Specified by:

write in interface Graph

Parameters:

out - output stream

lang - format for the input serialization, may be "RDF/XML", "RDF/XML-ABBREV", "N-TRIPLE" and "N3". The default value, represented by null, is "RDF/XML".

base - base uri to be used when converting relative uris to absolute uris, may be null. If set to "", allows relative uris to be used in the model.

Returns:

true on success, else false

getDefaultRepositoryName

protected static String getDefaultRepositoryName()

whereBuilder

protected String whereBuilder(String query,
                              Statement statement)

getNodeAsString

protected static CoreGraph.NodeAsString getNodeAsString(Node node)

localNameToId

protected static String localNameToId(String localName)

getAuthor

protected static String getAuthor(Statement statement)

setAuthor

protected static void setAuthor(Statement statement,
                                String author)

getCreationDate

protected static Date getCreationDate(Statement statement)

setCreationDate

protected static void setCreationDate(Statement statement,
                                      Calendar created)

getModificationDate

protected static Date getModificationDate(Statement statement)

setModificationDate

protected static void setModificationDate(Statement statement,
                                          Calendar modified)

getComment

protected static String getComment(Statement statement)

setComment

protected static void setComment(Statement statement,
                                 String comment)

getStringProperty

protected static String getStringProperty(Statement statement,
                                          Resource prop)

setStringProperty

protected static void setStringProperty(Statement statement,
                                        Resource prop,
                                        String string)

getDateProperty

protected static Date getDateProperty(Statement statement,
                                      Resource prop)

setDateProperty

protected static void setDateProperty(Statement statement,
                                      Resource prop,
                                      Calendar date)