Examples of org.apache.marmotta.kiwi.persistence.KiWiConnection.loadNodeById()

Package org.apache.marmotta.kiwi.persistence

Class org.apache.marmotta.kiwi.persistence.KiWiConnection

Examples of org.apache.marmotta.kiwi.persistence.KiWiConnection.loadNodeById()

org.apache.marmotta.kiwi.persistence.KiWiConnection.loadNodeById()
Load a KiWiNode by database ID. The method will first look in the node cache for cached nodes. If no cache entry is found, it will run a database query ('load.node_by_id') on the NODES table and construct an appropriate subclass instance of KiWiNode with the obtained values. The result will be constructed based on the value of the NTYPE column as follows:
- 'uri' - KiWiUriResource using the id and svalue (as URI) columns
- 'bnode' - KiWiAnonResource using the id and svalue (as AnonId) columns
- 'string' - KiWiStringLiteral using the id, svalue (literal value), lang (literal language) and ltype (literal type) columns
- 'int' - KiWiIntLiteral using the id, svalue (string value), ivalue (integer value) and ltype (literal type) columns
- 'double' - KiWiDoubleLiteral using the id, svalue (string value), dvalue (double value) and ltype (literal type) columns
- 'boolean' - KiWiBooleanLiteral using the id, svalue (string value), bvalue (boolean value) and ltype (literal type) columns
- 'date' - KiWiDateLiteral using the id, svalue (string value), tvalue (time value) and ltype (literal type) columns
When a node is loaded from the database, it will be added to the different caches to speed up subsequent requests. @param id the database id of the node to load @return an instance of a KiWiNode subclass representing the node with the given database id;type depends on value of the ntype column

            Assert.assertEquals(bnode,testBNode1);
            Assert.assertEquals(bnode.getId(), testBNode1.getId());


            connection.commit();


            KiWiNode testBNode2 = connection.loadNodeById(bnode.getId());


            // needs to be equal, and should also be the identical object!
            Assert.assertEquals(bnode,testBNode2);
            Assert.assertEquals(bnode.getId(), testBNode2.getId());

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            Assert.assertEquals(1,Iterations.asList(connection.listResources()).size());


            // clear cache and test again
            persistence.clearCache();
            KiWiNode testBNode4 = connection.loadNodeById(bnode.getId());


            // needs to be equal, but now it should not be the same object!
            Assert.assertEquals(bnode,testBNode4);
            Assert.assertEquals(bnode.getId(), testBNode4.getId());

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            connection.storeNode(literal);


            // check if it then has a database ID
            Assert.assertTrue(literal.getId() >= 0);


            KiWiNode testLiteral1 = connection.loadNodeById(literal.getId());


            // needs to be equal, and should also be the identical object!
            Assert.assertEquals(literal,testLiteral1);
            Assert.assertEquals(literal.getId(), testLiteral1.getId());

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            Assert.assertEquals(literal,testLiteral1);
            Assert.assertEquals(literal.getId(), testLiteral1.getId());


            connection.commit();


            KiWiNode testLiteral2 = connection.loadNodeById(literal.getId());


            // needs to be equal, and should also be the identical object!
            Assert.assertEquals(literal,testLiteral2);
            Assert.assertEquals(literal.getId(), testLiteral2.getId());

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            connection.commit();




            // clear cache and test again
            persistence.clearCache();
            KiWiNode testLiteral4 = connection.loadNodeById(literal.getId());


            // needs to be equal, but now it should not be the same object!
            Assert.assertEquals(literal,testLiteral4);
            Assert.assertEquals(literal.getId(), testLiteral4.getId());

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            connection.storeNode(literal);


            // check if it then has a database ID
            Assert.assertTrue(literal.getId() >= 0);


            KiWiNode testLiteral1 = connection.loadNodeById(literal.getId());


            // needs to be equal, and should also be the identical object!
            Assert.assertEquals(literal,testLiteral1);
            Assert.assertEquals(literal.getId(), testLiteral1.getId());

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            Assert.assertEquals(literal,testLiteral1);
            Assert.assertEquals(literal.getId(), testLiteral1.getId());


            connection.commit();


            KiWiNode testLiteral2 = connection.loadNodeById(literal.getId());


            // needs to be equal, and should also be the identical object!
            Assert.assertEquals(literal,testLiteral2);
            Assert.assertEquals(literal.getId(), testLiteral2.getId());

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            connection.commit();




            // clear cache and test again
            persistence.clearCache();
            KiWiNode testLiteral4 = connection.loadNodeById(literal.getId());


            // needs to be equal, but now it should not be the same object!
            Assert.assertEquals(literal,testLiteral4);
            Assert.assertEquals(literal.getId(), testLiteral4.getId());

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            connection.storeNode(literal);


            // check if it then has a database ID
            Assert.assertTrue(literal.getId() >= 0);


            KiWiNode testLiteral1 = connection.loadNodeById(literal.getId());


            // needs to be equal, and should also be the identical object!
            Assert.assertEquals(literal,testLiteral1);
            Assert.assertEquals(uri,((KiWiLiteral)testLiteral1).getType());
            Assert.assertEquals(literal.getId(), testLiteral1.getId());

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            Assert.assertEquals(uri,((KiWiLiteral)testLiteral1).getType());
            Assert.assertEquals(literal.getId(), testLiteral1.getId());


            connection.commit();


            KiWiNode testLiteral2 = connection.loadNodeById(literal.getId());


            // needs to be equal, and should also be the identical object!
            Assert.assertEquals(literal,testLiteral2);
            Assert.assertEquals(uri,((KiWiLiteral)testLiteral2).getType());
            Assert.assertEquals(literal.getId(), testLiteral2.getId());

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