Examples of org.openrdf.sail.SailConnection.clear()

org.openrdf.sail.SailConnection.clear()
Removes all statements from the specified/all contexts. If no contexts are specified the method operates on the entire repository. @param contexts The context(s) from which to remove the statements. 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 SailException If the statements could not be removed.

        URI uriD = sail.getValueFactory().createURI("http://example.org/uriD");


        SailConnection sc = sail.getConnection();
        try {
            sc.begin();
            sc.clear();


            sc.addStatement(uriA, uriB, uriC);
            assertEquals(1, countStatements(sc, null, null, null, false));
            assertEquals(0, count(sc.getContextIDs()));

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  {
    Sail sail = new PgSqlStore("sesame_test");
    sail.initialize();
    SailConnection conn = sail.getConnection();
    try {
      conn.clear();
      conn.clearNamespaces();
      conn.commit();
    } finally {
      conn.close();
    }

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  {
    Sail sail = new MySqlStore("sesame_test");
    sail.initialize();
    SailConnection conn = sail.getConnection();
    try {
      conn.clear();
      conn.clearNamespaces();
      conn.commit();
    } finally {
      conn.close();
    }

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        final SailConnection con = cas.getConnection();
        try {
            con.begin();


            assertTrue(hasStatement(con, null, null, null));
            con.clear();
            assertFalse(hasStatement(con, null, null, null));


            con.commit();
        } catch (final Throwable t) {
            con.rollback();

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                            return !closed && annotator.isOpen();
                        }


                        public void handle(final Tweet tweet) throws HandlerException {
                            try {
                                c.clear();
                                c.commit();
                                c.begin();
                            } catch (SailException e) {
                                throw new HandlerException(e);
                            }

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                                    return annotator.isOpen();
                                }


                                public void handle(final Tweet tweet) throws HandlerException {
                                    try {
                                        c.clear();
                                        c.commit();
                                        c.begin();
                                    } catch (SailException e) {
                                        throw new HandlerException(e);
                                    }

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                                    return annotator.isOpen();
                                }


                                public void handle(final Tweet tweet) throws HandlerException {
                                    try {
                                        c.clear();
                                        c.commit();
                                        c.begin();
                                    } catch (SailException e) {
                                        throw new HandlerException(e);
                                    }

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                            return p.isOpen();
                        }


                        public void handle(final Tweet tweet) throws HandlerException {
                            try {
                                sc.clear();
                                sc.commit();
                                sc.begin();
                            } catch (SailException e) {
                                throw new HandlerException(e);
                            }

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                            return p.isOpen();
                        }


                        public void handle(final Tweet tweet) throws HandlerException {
                            try {
                                sc.clear();
                                sc.commit();
                                sc.begin();
                            } catch (SailException e) {
                                throw new HandlerException(e);
                            }

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                                        return p.isOpen();
                                    }


                                    public void handle(final Tweet tweet) throws HandlerException {
                                        try {
                                            tc.clear();
                                            tc.commit();
                                            tc.begin();
                                        } catch (SailException e) {
                                            throw new HandlerException(e);
                                        }

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