Package org.eclipse.rdf4j.spring.operationlog

Class LoggingRepositoryConnection

java.lang.Object

org.eclipse.rdf4j.repository.base.AbstractRepositoryConnection

org.eclipse.rdf4j.repository.base.RepositoryConnectionWrapper

org.eclipse.rdf4j.spring.operationlog.LoggingRepositoryConnection

All Implemented Interfaces:

AutoCloseable, DelegatingRepositoryConnection, RepositoryConnection

public class LoggingRepositoryConnection
extends RepositoryConnectionWrapper

Since:

4.0.0

Author:

Florian Kleedorfer

Constructor Summary

Constructors

Constructor	Description
LoggingRepositoryConnection(RepositoryConnection delegate, OperationLog operationLog)

Method Summary

Modifier and Type	Method	Description
void	add(File file, String baseURI, RDFFormat dataFormat, Resource... contexts)	Adds RDF data from the specified file to a specific contexts in the repository.
void	add(InputStream in, String baseURI, RDFFormat dataFormat, Resource... contexts)	Adds RDF data from an InputStream to the repository, optionally to one or more named contexts.
void	add(Reader reader, String baseURI, RDFFormat dataFormat, Resource... contexts)	Adds RDF data from a Reader to the repository, optionally to one or more named contexts.
void	add(Iterable<? extends Statement> statements, Resource... contexts)	Adds the supplied statements to this repository, optionally to one or more named contexts.
void	add(URL url, String baseURI, RDFFormat dataFormat, Resource... contexts)	Adds the RDF data that can be found at the specified URL to the repository, optionally to one or more named contexts.
<E extends Exception> void	add(Iteration<? extends Statement,E> statementIter, Resource... contexts)	Adds the supplied statements to this repository, optionally to one or more named contexts.
void	add(Resource subject, IRI predicate, Value object, Resource... contexts)	Adds a statement with the specified subject, predicate and object to this repository, optionally to one or more named contexts.
void	add(Statement st, Resource... contexts)	Adds the supplied statement to this repository, optionally to one or more named contexts.
void	add(RepositoryResult<Statement> statements, Resource... contexts)	Adds the supplied statements to this repository, optionally to one or more named contexts.
void	clear(Resource... contexts)	Removes all statements from a specific contexts in the repository.
RepositoryResult<Statement>	getStatements(Resource subj, IRI pred, Value obj, boolean includeInferred, Resource... contexts)	Gets all statements with a specific subject, predicate and/or object from the repository.
RepositoryResult<Statement>	getStatements(Resource subj, IRI pred, Value obj, Resource... contexts)	Gets all statements with a specific subject, predicate and/or object from the repository.
boolean	hasStatement(Resource subj, IRI pred, Value obj, boolean includeInferred, Resource... contexts)	Checks whether the repository contains statements with a specific subject, predicate and/or object, optionally in the specified contexts.
boolean	hasStatement(Statement st, boolean includeInferred, Resource... contexts)	Checks whether the repository contains the specified statement, optionally in the specified contexts.
GraphQuery	prepareGraphQuery(String query)	Prepares SPARQL queries that produce RDF graphs, that is, SPARQL CONSTRUCT or DESCRIBE queries.
GraphQuery	prepareGraphQuery(QueryLanguage ql, String query)	Prepares queries that produce RDF graphs.
GraphQuery	prepareGraphQuery(QueryLanguage ql, String queryString, String baseURI)	Prepares queries that produce RDF graphs.
TupleQuery	prepareTupleQuery(String query)	Prepares a SPARQL query that produces sets of value tuples, that is a SPARQL SELECT query.
TupleQuery	prepareTupleQuery(QueryLanguage ql, String query)	Prepares a query that produces sets of value tuples.
TupleQuery	prepareTupleQuery(QueryLanguage ql, String queryString, String baseURI)	Prepares a query that produces sets of value tuples.
Update	prepareUpdate(QueryLanguage ql, String updateString, String baseURI)	Prepares an Update operation.
void	remove(Iterable<? extends Statement> statements, Resource... contexts)	Removes the supplied statements from the specified contexts in this repository.
<E extends Exception> void	remove(Iteration<? extends Statement,E> statementIter, Resource... contexts)	Removes the supplied statements from a specific context in this repository, ignoring any context information carried by the statements themselves.
void	remove(Resource subject, IRI predicate, Value object, Resource... contexts)	Removes the statement(s) with the specified subject, predicate and object from the repository, optionally restricted to the specified contexts.
void	remove(Statement st, Resource... contexts)	Removes the supplied statement from the specified contexts in the repository.
void	remove(RepositoryResult<Statement> statements, Resource... contexts)	Removes the supplied statements from a specific context in this repository, ignoring any context information carried by the statements themselves.
void	removeNamespace(String prefix)	Removes a namespace declaration by removing the association between a prefix and a namespace name.
long	size(Resource... contexts)	Returns the number of (explicit) statements that are in the specified contexts in this repository.

Methods inherited from class org.eclipse.rdf4j.repository.base.RepositoryConnectionWrapper

addWithoutCommit, begin, begin, begin, clearNamespaces, close, commit, exportStatements, exportStatements, getContextIDs, getDelegate, getIsolationLevel, getNamespace, getNamespaces, isActive, isAutoCommit, isDelegatingAdd, isDelegatingRead, isDelegatingRemove, isEmpty, isOpen, prepare, prepareBooleanQuery, prepareQuery, removeWithoutCommit, rollback, setAutoCommit, setDelegate, setIsolationLevel, setNamespace, setParserConfig

Methods inherited from class org.eclipse.rdf4j.repository.base.AbstractRepositoryConnection

addWithoutCommit, conditionalCommit, conditionalRollback, export, getParserConfig, getRepository, getValueFactory, prepareBooleanQuery, prepareQuery, prepareUpdate, removeWithoutCommit, startLocalTransaction

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.rdf4j.repository.RepositoryConnection

add, add, add, add, add, add, export, getParserConfig, getRepository, getValueFactory, prepareBooleanQuery, prepareBooleanQuery, prepareQuery, prepareQuery, prepareUpdate, prepareUpdate

Constructor Details

LoggingRepositoryConnection

public LoggingRepositoryConnection(RepositoryConnection delegate,
 OperationLog operationLog)

Method Details

prepareTupleQuery

public TupleQuery prepareTupleQuery(QueryLanguage ql,
 String queryString,
 String baseURI)
                             throws MalformedQueryException,
RepositoryException

Description copied from interface: RepositoryConnection

Prepares a query that produces sets of value tuples.

Specified by:

prepareTupleQuery in interface RepositoryConnection

Overrides:

prepareTupleQuery in class RepositoryConnectionWrapper

Parameters:

ql - The query language in which the query is formulated.

queryString - The query string.

baseURI - The base URI to resolve any relative URIs that are in the query against, can be null if the query does not contain any relative URIs.

Returns:

a TupleQuery ready to be evaluated on this RepositoryConnection.

Throws:

MalformedQueryException - If the supplied query is malformed.

RepositoryException

prepareTupleQuery

public TupleQuery prepareTupleQuery(String query)
                             throws RepositoryException,
MalformedQueryException

Description copied from interface: RepositoryConnection

Prepares a SPARQL query that produces sets of value tuples, that is a SPARQL SELECT query. In case the query contains relative URIs that need to be resolved against an external base URI, one should use RepositoryConnection.prepareTupleQuery(QueryLanguage, String, String) instead.

Parameters:

query - The query string, in SPARQL syntax.

Returns:

a TupleQuery ready to be evaluated on this RepositoryConnection.

Throws:

MalformedQueryException - If the supplied query is malformed.

RepositoryException

See Also:

RepositoryConnection.prepareTupleQuery(QueryLanguage, String)

prepareTupleQuery

public TupleQuery prepareTupleQuery(QueryLanguage ql,
 String query)
                             throws RepositoryException,
MalformedQueryException

Description copied from interface: RepositoryConnection

Prepares a query that produces sets of value tuples. In case the query contains relative URIs that need to be resolved against an external base URI, one should use RepositoryConnection.prepareTupleQuery(QueryLanguage, String, String) instead.

Specified by:

prepareTupleQuery in interface RepositoryConnection

Overrides:

prepareTupleQuery in class AbstractRepositoryConnection

Parameters:

ql - The query language in which the query is formulated.

query - The query string.

Returns:

a TupleQuery ready to be evaluated on this RepositoryConnection.

Throws:

MalformedQueryException - If the supplied query is malformed.

RepositoryException

prepareGraphQuery

public GraphQuery prepareGraphQuery(QueryLanguage ql,
 String queryString,
 String baseURI)
                             throws MalformedQueryException,
RepositoryException

Description copied from interface: RepositoryConnection

Prepares queries that produce RDF graphs.

Specified by:

prepareGraphQuery in interface RepositoryConnection

Overrides:

prepareGraphQuery in class RepositoryConnectionWrapper

Parameters:

ql - The query language in which the query is formulated.

queryString - The query string.

baseURI - The base URI to resolve any relative URIs that are in the query against, can be null if the query does not contain any relative URIs.

Returns:

a GraphQuery ready to be evaluated on this RepositoryConnection.

Throws:

MalformedQueryException - If the supplied query is malformed.

RepositoryException

prepareGraphQuery

public GraphQuery prepareGraphQuery(String query)
                             throws RepositoryException,
MalformedQueryException

Description copied from interface: RepositoryConnection

Prepares SPARQL queries that produce RDF graphs, that is, SPARQL CONSTRUCT or DESCRIBE queries. In case the query contains relative URIs that need to be resolved against an external base URI, one should use RepositoryConnection.prepareGraphQuery(QueryLanguage, String, String) instead.

Parameters:

query - The query string, in SPARQL syntax.

Returns:

a GraphQuery ready to be evaluated on this RepositoryConnection.

Throws:

MalformedQueryException - If the supplied query is malformed.

RepositoryException

See Also:

RepositoryConnection.prepareGraphQuery(QueryLanguage, String)

prepareGraphQuery

public GraphQuery prepareGraphQuery(QueryLanguage ql,
 String query)
                             throws RepositoryException,
MalformedQueryException

Description copied from interface: RepositoryConnection

Prepares queries that produce RDF graphs. In case the query contains relative URIs that need to be resolved against an external base URI, one should use RepositoryConnection.prepareGraphQuery(QueryLanguage, String, String) instead.

Specified by:

prepareGraphQuery in interface RepositoryConnection

Overrides:

prepareGraphQuery in class AbstractRepositoryConnection

Parameters:

ql - The query language in which the query is formulated.

query - The query string.

Returns:

a GraphQuery ready to be evaluated on this RepositoryConnection.

Throws:

MalformedQueryException - If the supplied query is malformed.

RepositoryException

prepareUpdate

public Update prepareUpdate(QueryLanguage ql,
 String updateString,
 String baseURI)
                     throws MalformedQueryException,
RepositoryException

Description copied from interface: RepositoryConnection

Prepares an Update operation.

Specified by:

prepareUpdate in interface RepositoryConnection

Overrides:

prepareUpdate in class RepositoryConnectionWrapper

Parameters:

ql - The query language in which the update operation is formulated.

updateString - The update operation string.

baseURI - The base URI to resolve any relative URIs that are in the update against, can be null if the update does not contain any relative URIs.

Returns:

a Update ready to be executed on this RepositoryConnection.

Throws:

MalformedQueryException - If the supplied update operation string is malformed.

RepositoryException

getStatements

public RepositoryResult<Statement> getStatements(Resource subj,
 IRI pred,
 Value obj,
 Resource... contexts)
                                          throws RepositoryException

Description copied from interface: RepositoryConnection

Gets all statements with a specific subject, predicate and/or object from the repository. The result is optionally restricted to the specified set of named contexts. If the repository supports inferencing, inferred statements will be included in the result.

Parameters:

subj - A Resource specifying the subject, or null for a wildcard.

pred - A URI specifying the predicate, or null for a wildcard.

obj - A Value specifying the object, or null for a wildcard.

contexts - The context(s) to get the data from. Note that this parameter is a vararg and as such is optional. If no contexts are supplied the method operates on the entire repository.

Returns:

The statements matching the specified pattern. The result object is a RepositoryResult object, a lazy Iterator-like object containing Statements and optionally throwing a RepositoryException when an error when a problem occurs during retrieval.

Throws:

RepositoryException

add

public void add(RepositoryResult<Statement> statements,
 Resource... contexts)
         throws RepositoryException

Description copied from interface: RepositoryConnection

Adds the supplied statements to this repository, optionally to one or more named contexts.

Parameters:

statements - The statements to add. The @{link RepositoryResult} will be closed before this method returns.

contexts - The contexts to add the statements to. Note that this parameter is a vararg and as such is optional. If no contexts are specified, each statement is added to any context specified in the statement, or if the statement contains no context, it is added without context. If one or more contexts are specified each statement is added to these contexts, ignoring any context information in the statement itself. ignored.

Throws:

RepositoryException - If the statements could not be added to the repository, for example because the repository is not writable.

add

public void add(File file,
 String baseURI,
 RDFFormat dataFormat,
 Resource... contexts)
         throws IOException,
RDFParseException,
RepositoryException

Description copied from interface: RepositoryConnection

Adds RDF data from the specified file to a specific contexts in the repository.

Specified by:

add in interface RepositoryConnection

Overrides:

add in class RepositoryConnectionWrapper

Parameters:

file - A file containing RDF data.

baseURI - The base URI to resolve any relative URIs that are in the data against. This defaults to the value of file.toURI() if the value is set to null.

Note that if the data contains an embedded base URI, that embedded base URI will overrule the value supplied here (see RFC 3986 section 5.1 for details).

dataFormat - The serialization format of the data. If set to null, the format will be automatically determined by examining the file name extension of the supplied File.

contexts - The contexts to add the data to. Note that this parameter is a vararg and as such is optional. If no contexts are specified, the data is added to any context specified in the actual data file, or if the data contains no context, it is added without context. If one or more contexts are specified the data is added to these contexts, ignoring any context information in the data itself.

Throws:

IOException - If an I/O error occurred while reading from the file.

RDFParseException - If an error was found while parsing the RDF data.

RepositoryException - If the data could not be added to the repository, for example because the repository is not writable.

add

public void add(InputStream in,
 String baseURI,
 RDFFormat dataFormat,
 Resource... contexts)
         throws IOException,
RDFParseException,
RepositoryException

Description copied from interface: RepositoryConnection

Adds RDF data from an InputStream to the repository, optionally to one or more named contexts.

Specified by:

add in interface RepositoryConnection

Overrides:

add in class RepositoryConnectionWrapper

Parameters:

in - An InputStream from which RDF data can be read.

baseURI - The base URI to resolve any relative URIs that are in the data against. May be null.

Note that if the data contains an embedded base URI, that embedded base URI will overrule the value supplied here (see RFC 3986 section 5.1 for details).

dataFormat - The serialization format of the data.

contexts - The contexts to add the data to. If one or more contexts are supplied the method ignores contextual information in the actual data. If no contexts are supplied the contextual information in the input stream is used, if no context information is available the data is added without any context.

Throws:

IOException - If an I/O error occurred while reading from the input stream.

RDFParseException - If an error was found while parsing the RDF data.

RepositoryException - If the data could not be added to the repository, for example because the repository is not writable.

add

public void add(Iterable<? extends Statement> statements,
 Resource... contexts)
         throws RepositoryException

Description copied from interface: RepositoryConnection

Adds the supplied statements to this repository, optionally to one or more named contexts.

Specified by:

add in interface RepositoryConnection

Overrides:

add in class RepositoryConnectionWrapper

Parameters:

statements - The statements that should be added.

contexts - The contexts to add the statements to. Note that this parameter is a vararg and as such is optional. If no contexts are specified, each statement is added to any context specified in the statement, or if the statement contains no context, it is added without context. If one or more contexts are specified each statement is added to these contexts, ignoring any context information in the statement itself. ignored.

Throws:

RepositoryException - If the statements could not be added to the repository, for example because the repository is not writable.

add

public <E extends Exception> void add(Iteration<? extends Statement,E> statementIter,
 Resource... contexts)
                               throws RepositoryException,
E

Description copied from interface: RepositoryConnection

Adds the supplied statements to this repository, optionally to one or more named contexts.

Specified by:

add in interface RepositoryConnection

Overrides:

add in class RepositoryConnectionWrapper

Parameters:

statementIter - The statements to add. In case the iteration is a CloseableIteration, it will be closed before this method returns.

contexts - The contexts to add the statements to. Note that this parameter is a vararg and as such is optional. If no contexts are specified, each statement is added to any context specified in the statement, or if the statement contains no context, it is added without context. If one or more contexts are specified each statement is added to these contexts, ignoring any context information in the statement itself. ignored.

Throws:

RepositoryException - If the statements could not be added to the repository, for example because the repository is not writable.

E extends Exception

add

public void add(Reader reader,
 String baseURI,
 RDFFormat dataFormat,
 Resource... contexts)
         throws IOException,
RDFParseException,
RepositoryException

Description copied from interface: RepositoryConnection

Adds RDF data from a Reader to the repository, optionally to one or more named contexts. Note: using a Reader to upload byte-based data means that you have to be careful not to destroy the data's character encoding by enforcing a default character encoding upon the bytes. If possible, adding such data using an InputStream is to be preferred.

Specified by:

add in interface RepositoryConnection

Overrides:

add in class RepositoryConnectionWrapper

Parameters:

reader - A Reader from which RDF data can be read.

baseURI - The base URI to resolve any relative URIs that are in the data against. May be null.

Note that if the data contains an embedded base URI, that embedded base URI will overrule the value supplied here (see RFC 3986 section 5.1 for details).

dataFormat - The serialization format of the data.

contexts - The contexts to add the data to. If one or more contexts are specified the data is added to these contexts, ignoring any context information in the data itself.

Throws:

IOException - If an I/O error occurred while reading from the reader.

RDFParseException - If an error was found while parsing the RDF data.

RepositoryException - If the data could not be added to the repository, for example because the repository is not writable.

add

public void add(Resource subject,
 IRI predicate,
 Value object,
 Resource... contexts)
         throws RepositoryException

Description copied from interface: RepositoryConnection

Adds a statement with the specified subject, predicate and object to this repository, optionally to one or more named contexts.

Specified by:

add in interface RepositoryConnection

Overrides:

add in class RepositoryConnectionWrapper

Parameters:

subject - The statement's subject.

predicate - The statement's predicate.

object - The statement's object.

contexts - The contexts to add the data to. Note that this parameter is a vararg and as such is optional. If no contexts are specified, the data is added to any context specified in the actual data file, or if the data contains no context, it is added without context. If one or more contexts are specified the data is added to these contexts, ignoring any context information in the data itself.

Throws:

RepositoryException - If the data could not be added to the repository, for example because the repository is not writable.

add

public void add(Statement st,
 Resource... contexts)
         throws RepositoryException

Description copied from interface: RepositoryConnection

Adds the supplied statement to this repository, optionally to one or more named contexts.

Specified by:

add in interface RepositoryConnection

Overrides:

add in class RepositoryConnectionWrapper

Parameters:

st - The statement to add.

contexts - The contexts to add the statements to. Note that this parameter is a vararg and as such is optional. If no contexts are specified, the statement is added to any context specified in each statement, or if the statement contains no context, it is added without context. If one or more contexts are specified the statement is added to these contexts, ignoring any context information in the statement itself.

Throws:

RepositoryException - If the statement could not be added to the repository, for example because the repository is not writable.

add

public void add(URL url,
 String baseURI,
 RDFFormat dataFormat,
 Resource... contexts)
         throws IOException,
RDFParseException,
RepositoryException

Description copied from interface: RepositoryConnection

Adds the RDF data that can be found at the specified URL to the repository, optionally to one or more named contexts.

Specified by:

add in interface RepositoryConnection

Overrides:

add in class RepositoryConnectionWrapper

Parameters:

url - The URL of the RDF data.

baseURI - The base URI to resolve any relative URIs that are in the data against. This defaults to the value of url.toExternalForm() if the value is set to null.

Note that if the data contains an embedded base URI, that embedded base URI will overrule the value supplied here (see RFC 3986 section 5.1 for details).

dataFormat - The serialization format of the data. If set to null, the format will be automatically determined by examining the content type in the HTTP response header, and failing that, the file name extension of the supplied URL.

contexts - The contexts to add the data to. If one or more contexts are specified the data is added to these contexts, ignoring any context information in the data itself.

Throws:

IOException - If an I/O error occurred while reading from the URL.

RDFParseException - If an error was found while parsing the RDF data.

RepositoryException - If the data could not be added to the repository, for example because the repository is not writable.

remove

public void remove(RepositoryResult<Statement> statements,
 Resource... contexts)
            throws RepositoryException

Description copied from interface: RepositoryConnection

Removes the supplied statements from a specific context in this repository, ignoring any context information carried by the statements themselves.

Parameters:

statements - The statements to remove. The RepositoryResult will be closed before this method returns.

contexts - The context(s) to remove the data from. Note that this parameter is a vararg and as such is optional. If no contexts are supplied the method operates on the contexts associated with the statement itself, and if no context is associated with the statement, on the entire repository.

Throws:

RepositoryException - If the statements could not be removed from the repository, for example because the repository is not writable.

remove

public void remove(Iterable<? extends Statement> statements,
 Resource... contexts)
            throws RepositoryException

Description copied from interface: RepositoryConnection

Removes the supplied statements from the specified contexts in this repository.

Specified by:

remove in interface RepositoryConnection

Overrides:

remove in class RepositoryConnectionWrapper

Parameters:

statements - The statements that should be added.

contexts - The context(s) to remove the data from. Note that this parameter is a vararg and as such is optional. If no contexts are supplied the method operates on the contexts associated with the statement itself, and if no context is associated with the statement, on the entire repository.

Throws:

RepositoryException - If the statements could not be added to the repository, for example because the repository is not writable.

remove

public <E extends Exception> void remove(Iteration<? extends Statement,E> statementIter,
 Resource... contexts)
                                  throws RepositoryException,
E

Description copied from interface: RepositoryConnection

Removes the supplied statements from a specific context in this repository, ignoring any context information carried by the statements themselves.

Specified by:

remove in interface RepositoryConnection

Overrides:

remove in class RepositoryConnectionWrapper

Parameters:

statementIter - The statements to remove. In case the iteration is a CloseableIteration, it will be closed before this method returns.

contexts - The context(s) to remove the data from. Note that this parameter is a vararg and as such is optional. If no contexts are supplied the method operates on the contexts associated with the statement itself, and if no context is associated with the statement, on the entire repository.

Throws:

RepositoryException - If the statements could not be removed from the repository, for example because the repository is not writable.

E extends Exception

remove

public void remove(Resource subject,
 IRI predicate,
 Value object,
 Resource... contexts)
            throws RepositoryException

Description copied from interface: RepositoryConnection

Removes the statement(s) with the specified subject, predicate and object from the repository, optionally restricted to the specified contexts.

Specified by:

remove in interface RepositoryConnection

Overrides:

remove in class RepositoryConnectionWrapper

Parameters:

subject - The statement's subject, or null for a wildcard.

predicate - The statement's predicate, or null for a wildcard.

object - The statement's object, or null for a wildcard.

contexts - The context(s) to remove the data from. Note that this parameter is a vararg and as such is optional. If no contexts are supplied the method operates on the entire repository.

Throws:

RepositoryException - If the statement(s) could not be removed from the repository, for example because the repository is not writable.

remove

public void remove(Statement st,
 Resource... contexts)
            throws RepositoryException

Description copied from interface: RepositoryConnection

Removes the supplied statement from the specified contexts in the repository.

Specified by:

remove in interface RepositoryConnection

Overrides:

remove in class RepositoryConnectionWrapper

Parameters:

st - The statement to remove.

contexts - The context(s) to remove the data from. Note that this parameter is a vararg and as such is optional. If no contexts are supplied the method operates on the contexts associated with the statement itself, and if no context is associated with the statement, on the entire repository.

Throws:

RepositoryException - If the statement could not be removed from the repository, for example because the repository is not writable.

clear

public void clear(Resource... contexts)
           throws RepositoryException

Description copied from interface: RepositoryConnection

Removes all statements from a specific contexts in the repository.

Specified by:

clear in interface RepositoryConnection

Overrides:

clear in class RepositoryConnectionWrapper

Parameters:

contexts - The context(s) to remove the data from. Note that this parameter is a vararg and as such is optional. If no contexts are supplied the method operates on the entire repository.

Throws:

RepositoryException - If the statements could not be removed from the repository, for example because the repository is not writable.

getStatements

public RepositoryResult<Statement> getStatements(Resource subj,
 IRI pred,
 Value obj,
 boolean includeInferred,
 Resource... contexts)
                                          throws RepositoryException

Description copied from interface: RepositoryConnection

Gets all statements with a specific subject, predicate and/or object from the repository. The result is optionally restricted to the specified set of named contexts.

Specified by:

getStatements in interface RepositoryConnection

Overrides:

getStatements in class RepositoryConnectionWrapper

Parameters:

subj - A Resource specifying the subject, or null for a wildcard.

pred - An IRI specifying the predicate, or null for a wildcard.

obj - A Value specifying the object, or null for a wildcard.

includeInferred - if false, no inferred statements are returned; if true, inferred statements are returned if available. The default is true.

contexts - The context(s) to get the data from. Note that this parameter is a vararg and as such is optional. If no contexts are supplied the method operates on the entire repository.

Returns:

The statements matching the specified pattern. The result object is a RepositoryResult object, a lazy Iterator-like object containing Statements and optionally throwing a RepositoryException when an error when a problem occurs during retrieval.

Throws:

RepositoryException

hasStatement

public boolean hasStatement(Resource subj,
 IRI pred,
 Value obj,
 boolean includeInferred,
 Resource... contexts)
                     throws RepositoryException

Description copied from interface: RepositoryConnection

Checks whether the repository contains statements with a specific subject, predicate and/or object, optionally in the specified contexts.

Specified by:

hasStatement in interface RepositoryConnection

Overrides:

hasStatement in class RepositoryConnectionWrapper

Parameters:

subj - A Resource specifying the subject, or null for a wildcard.

pred - An IRI specifying the predicate, or null for a wildcard.

obj - A Value specifying the object, or null for a wildcard.

includeInferred - if false, no inferred statements are considered; if true, inferred statements are considered if available

contexts - The context(s) the need to be searched. Note that this parameter is a vararg and as such is optional. If no contexts are supplied the method operates on the entire repository.

Returns:

true If a matching statement is in the repository in the specified context, false otherwise.

Throws:

RepositoryException

hasStatement

public boolean hasStatement(Statement st,
 boolean includeInferred,
 Resource... contexts)
                     throws RepositoryException

Description copied from interface: RepositoryConnection

Checks whether the repository contains the specified statement, optionally in the specified contexts.

Specified by:

hasStatement in interface RepositoryConnection

Overrides:

hasStatement in class RepositoryConnectionWrapper

Parameters:

st - The statement to look for. Context information in the statement is ignored.

includeInferred - if false, no inferred statements are considered; if true, inferred statements are considered if available

contexts - The context(s) to get the data from. Note that this parameter is a vararg and as such is optional. If no contexts are supplied the method operates on the entire repository.

Returns:

true If the repository contains the specified statement, false otherwise.

Throws:

RepositoryException

size

public long size(Resource... contexts)
          throws RepositoryException

Description copied from interface: RepositoryConnection

Returns the number of (explicit) statements that are in the specified contexts in this repository.

Specified by:

size in interface RepositoryConnection

Overrides:

size in class RepositoryConnectionWrapper

Parameters:

contexts - The context(s) to get the data from. Note that this parameter is a vararg and as such is optional. If no contexts are supplied the method operates on the entire repository.

Returns:

The number of explicit statements from the specified contexts in this repository.

Throws:

RepositoryException

removeNamespace

public void removeNamespace(String prefix)
                     throws RepositoryException

Description copied from interface: RepositoryConnection

Removes a namespace declaration by removing the association between a prefix and a namespace name.

Specified by:

removeNamespace in interface RepositoryConnection

Overrides:

removeNamespace in class RepositoryConnectionWrapper

Parameters:

prefix - The namespace prefix, or an empty string in case of the default namespace.

Throws:

RepositoryException - If the namespace prefix could not be removed.