java - Jena SDB 将文件读入模型

标签 java jena playframework-2.2

我有以下问题:

当我尝试将文件的内容加载到我的模型中时，它会抛出异常，我不知道为什么会抛出此异常，并且它会提供大量带有语法失败的 SQL block 。 有人能帮我解决这个问题吗？

我检查了jdbc连接，但似乎没问题。 我将 1.3.5 Jena SDB 与 play 2.2.0 结合使用。然后模型应该被持久化到 h2 数据库，模式为 play 的 mode=“mysql”。

抛出异常的代码:

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...");

以及抛出的异常: 

[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]

编辑: 这行代码必须更改: 

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

最佳答案

H2 不理解 MySQL 语法，例如ENGINE=MYISAM。每个 SQL 语法都不同。您需要告诉 SDB 它正在使用 H2 数据库。

关于java - Jena SDB 将文件读入模型，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/20021869/

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