Jena SDB Leggi il file in Modello

Question

Ho il problema seguente:

Quando provo a caricare il contenuto di un file nel mio modello lancia un'eccezione, non so perché questo viene lanciato e offre un enorme blocco di SQL con guasti Syntax. Qualcuno può aiutarmi con questo?

Ho controllato la connessione JDBC, ma sembra essere ok. Io uso 1.3.5 Jena SDB in combinazione con Play 2.2.0.Il modello dovrebbe quindi essere persiste al database H2 con la modalità="mysql" del gioco.

Il codice che lancia l'eccezione:

ds = SDBFactory.connectDataset(store);
        Logger.debug("load default model");
        model = ds.getDefaultModel();
        Logger.debug("Loaded model");
        FileManager.get().readModel(
                model,
                new File(rdfFile.getParentFile().getCanonicalPath()
                        .concat("/dataversions/" + datasetName)
                        + ".txt").getCanonicalPath(), "N-TRIPLES");
        Logger.debug("Filemanager loaded file into model...");

.

E l'eccezione che viene lanciata:

[debug] application - Create the new Dataset: test
[debug] application - load default model
[debug] application - Loaded model
[error] c.h.h.j.s.l.LoaderTuplesNodes - Error in thread: Problem making new tupleloader
com.hp.hpl.jena.sdb.SDBException: Problem making new tupleloader
        at com.hp.hpl.jena.sdb.layout2.LoaderTuplesNodes.updateOneTuple(LoaderTuplesNodes.java:292) ~[jena-sdb-1.3.5.jar:1.3.5]
        at com.hp.hpl.jena.sdb.layout2.LoaderTuplesNodes.access$200(LoaderTuplesNodes.java:43) ~[jena-sdb-1.3.5.jar:1.3.5]
        at com.hp.hpl.jena.sdb.layout2.LoaderTuplesNodes$Commiter.run(LoaderTuplesNodes.java:362) ~[jena-sdb-1.3.5.jar:1.3.5]
        at java.lang.Thread.run(Thread.java:744) [na:1.7.0_45]
Caused by: java.lang.reflect.InvocationTargetException: null
        at sun.reflect.GeneratedConstructorAccessor18.newInstance(Unknown Source) ~[na:na]
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.7.0_45]
        at java.lang.reflect.Constructor.newInstance(Constructor.java:526) ~[na:1.7.0_45]
        at com.hp.hpl.jena.sdb.layout2.LoaderTuplesNodes.updateOneTuple(LoaderTuplesNodes.java:288) ~[jena-sdb-1.3.5.jar:1.3.5]
        at com.hp.hpl.jena.sdb.layout2.LoaderTuplesNodes.access$200(LoaderTuplesNodes.java:43) ~[jena-sdb-1.3.5.jar:1.3.5]
        at com.hp.hpl.jena.sdb.layout2.LoaderTuplesNodes$Commiter.run(LoaderTuplesNodes.java:362) ~[jena-sdb-1.3.5.jar:1.3.5]
Caused by: com.hp.hpl.jena.sdb.SDBException: Problem initialising loader for [Triples]
        at com.hp.hpl.jena.sdb.layout2.TupleLoaderBase.<init>(TupleLoaderBase.java:59) ~[jena-sdb-1.3.5.jar:1.3.5]
        at com.hp.hpl.jena.sdb.layout2.hash.TupleLoaderHashBase.<init>(TupleLoaderHashBase.java:29) ~[jena-sdb-1.3.5.jar:1.3.5]
        at com.hp.hpl.jena.sdb.layout2.hash.TupleLoaderHashMySQL.<init>(TupleLoaderHashMySQL.java:29) ~[jena-sdb-1.3.5.jar:1.3.5]
        at sun.reflect.GeneratedConstructorAccessor18.newInstance(Unknown Source) ~[na:na]
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.7.0_45]
        at java.lang.reflect.Constructor.newInstance(Constructor.java:526) ~[na:1.7.0_45]
Caused by: org.h2.jdbc.JdbcSQLException: Syntax Fehler in SQL Befehl "CREATE TEMPORARY TABLE NNODETRIPLES
(N0 BIGINT ,
N1 LONGTEXT BINARY[*] CHARACTER SET UTF8 ,
N2 VARCHAR(10) BINARY CHARACTER SET UTF8 ,
N3 VARCHAR(200) BINARY CHARACTER SET UTF8 ,
N4 INT
) ENGINE=MYISAM "; erwartet "(, FOR, UNSIGNED, NOT, NULL, AS, DEFAULT, GENERATED, NOT, NULL, AUTO_INCREMENT, BIGSERIAL, SERIAL, IDENTITY, NULL_TO_DEFA
ULT, SEQUENCE, SELECTIVITY, COMMENT, CONSTRAINT, PRIMARY, UNIQUE, NOT, NULL, CHECK, REFERENCES, ,, )"
Syntax error in SQL statement "CREATE TEMPORARY TABLE NNODETRIPLES
(N0 BIGINT ,
N1 LONGTEXT BINARY[*] CHARACTER SET UTF8 ,
N2 VARCHAR(10) BINARY CHARACTER SET UTF8 ,
N3 VARCHAR(200) BINARY CHARACTER SET UTF8 ,
N4 INT
) ENGINE=MYISAM "; expected "(, FOR, UNSIGNED, NOT, NULL, AS, DEFAULT, GENERATED, NOT, NULL, AUTO_INCREMENT, BIGSERIAL, SERIAL, IDENTITY, NULL_TO_DEFA
ULT, SEQUENCE, SELECTIVITY, COMMENT, CONSTRAINT, PRIMARY, UNIQUE, NOT, NULL, CHECK, REFERENCES, ,, )"; SQL statement:
CREATE TEMPORARY TABLE NNodeTriples
(n0 BIGINT ,
n1 LONGTEXT BINARY CHARACTER SET utf8 ,
n2 VARCHAR(10) BINARY CHARACTER SET utf8 ,
n3 VARCHAR(200) BINARY CHARACTER SET utf8 ,
n4 INT
) ENGINE=MYISAM [42001-172]
        at org.h2.message.DbException.getJdbcSQLException(DbException.java:329) ~[h2.jar:1.3.172]
        at org.h2.message.DbException.get(DbException.java:169) ~[h2.jar:1.3.172]
        at org.h2.message.DbException.getSyntaxError(DbException.java:194) ~[h2.jar:1.3.172]
        at org.h2.command.Parser.getSyntaxError(Parser.java:491) ~[h2.jar:1.3.172]
        at org.h2.command.Parser.read(Parser.java:2822) ~[h2.jar:1.3.172]
        at org.h2.command.Parser.readIfMore(Parser.java:809) ~[h2.jar:1.3.172]
[error] c.h.h.j.s.l.LoaderTuplesNodes - Error in thread: Problem making new tupleloader
com.hp.hpl.jena.sdb.SDBException: Problem making new tupleloader
        at com.hp.hpl.jena.sdb.layout2.LoaderTuplesNodes.updateOneTuple(LoaderTuplesNodes.java:292) ~[jena-sdb-1.3.5.jar:1.3.5]
        at com.hp.hpl.jena.sdb.layout2.LoaderTuplesNodes.access$200(LoaderTuplesNodes.java:43) ~[jena-sdb-1.3.5.jar:1.3.5]
        at com.hp.hpl.jena.sdb.layout2.LoaderTuplesNodes$Commiter.run(LoaderTuplesNodes.java:362) ~[jena-sdb-1.3.5.jar:1.3.5]
        at java.lang.Thread.run(Thread.java:744) [na:1.7.0_45]
Caused by: java.lang.reflect.InvocationTargetException: null
        at sun.reflect.GeneratedConstructorAccessor18.newInstance(Unknown Source) ~[na:na]
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.7.0_45]
        at java.lang.reflect.Constructor.newInstance(Constructor.java:526) ~[na:1.7.0_45]
        at com.hp.hpl.jena.sdb.layout2.LoaderTuplesNodes.updateOneTuple(LoaderTuplesNodes.java:288) ~[jena-sdb-1.3.5.jar:1.3.5]
        at com.hp.hpl.jena.sdb.layout2.LoaderTuplesNodes.access$200(LoaderTuplesNodes.java:43) ~[jena-sdb-1.3.5.jar:1.3.5]
        at com.hp.hpl.jena.sdb.layout2.LoaderTuplesNodes$Commiter.run(LoaderTuplesNodes.java:362) ~[jena-sdb-1.3.5.jar:1.3.5]
Caused by: com.hp.hpl.jena.sdb.SDBException: Problem initialising loader for [Triples]
        at com.hp.hpl.jena.sdb.layout2.TupleLoaderBase.<init>(TupleLoaderBase.java:59) ~[jena-sdb-1.3.5.jar:1.3.5]
        at com.hp.hpl.jena.sdb.layout2.hash.TupleLoaderHashBase.<init>(TupleLoaderHashBase.java:29) ~[jena-sdb-1.3.5.jar:1.3.5]
        at com.hp.hpl.jena.sdb.layout2.hash.TupleLoaderHashMySQL.<init>(TupleLoaderHashMySQL.java:29) ~[jena-sdb-1.3.5.jar:1.3.5]
        at sun.reflect.GeneratedConstructorAccessor18.newInstance(Unknown Source) ~[na:na]
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.7.0_45]
        at java.lang.reflect.Constructor.newInstance(Constructor.java:526) ~[na:1.7.0_45]
Caused by: org.h2.jdbc.JdbcSQLException: Syntax Fehler in SQL Befehl "CREATE TEMPORARY TABLE NNODETRIPLES
(N0 BIGINT ,
N1 LONGTEXT BINARY[*] CHARACTER SET UTF8 ,
N2 VARCHAR(10) BINARY CHARACTER SET UTF8 ,
N3 VARCHAR(200) BINARY CHARACTER SET UTF8 ,
N4 INT
) ENGINE=MYISAM "; erwartet "(, FOR, UNSIGNED, NOT, NULL, AS, DEFAULT, GENERATED, NOT, NULL, AUTO_INCREMENT, BIGSERIAL, SERIAL, IDENTITY, NULL_TO_DEFA
ULT, SEQUENCE, SELECTIVITY, COMMENT, CONSTRAINT, PRIMARY, UNIQUE, NOT, NULL, CHECK, REFERENCES, ,, )"
Syntax error in SQL statement "CREATE TEMPORARY TABLE NNODETRIPLES
(N0 BIGINT ,
N1 LONGTEXT BINARY[*] CHARACTER SET UTF8 ,
N2 VARCHAR(10) BINARY CHARACTER SET UTF8 ,
N3 VARCHAR(200) BINARY CHARACTER SET UTF8 ,
N4 INT
) ENGINE=MYISAM "; expected "(, FOR, UNSIGNED, NOT, NULL, AS, DEFAULT, GENERATED, NOT, NULL, AUTO_INCREMENT, BIGSERIAL, SERIAL, IDENTITY, NULL_TO_DEFA
ULT, SEQUENCE, SELECTIVITY, COMMENT, CONSTRAINT, PRIMARY, UNIQUE, NOT, NULL, CHECK, REFERENCES, ,, )"; SQL statement:
CREATE TEMPORARY TABLE NNodeTriples
(n0 BIGINT ,
n1 LONGTEXT BINARY CHARACTER SET utf8 ,
n2 VARCHAR(10) BINARY CHARACTER SET utf8 ,
n3 VARCHAR(200) BINARY CHARACTER SET utf8 ,
n4 INT
) ENGINE=MYISAM [42001-172]
        at org.h2.message.DbException.getJdbcSQLException(DbException.java:329) ~[h2.jar:1.3.172]
        at org.h2.message.DbException.get(DbException.java:169) ~[h2.jar:1.3.172]
        at org.h2.message.DbException.getSyntaxError(DbException.java:194) ~[h2.jar:1.3.172]
        at org.h2.command.Parser.getSyntaxError(Parser.java:491) ~[h2.jar:1.3.172]
        at org.h2.command.Parser.read(Parser.java:2822) ~[h2.jar:1.3.172]
        at org.h2.command.Parser.readIfMore(Parser.java:809) ~[h2.jar:1.3.172]

.

Modifica: Questa riga di codice deve essere cambiata:

  StoreDesc storeDesc = new StoreDesc(LayoutType.LayoutTripleNodesHash, DatabaseType.H2);

.

Answer 1

H2 non capisce la sintassi mysql e.g.ENGINE=MYISAM.Ogni sintassi SQL è diversa.È necessario informare SDB utilizzando un database H2.