Examples with ElementMetaData org.datanucleus.metadata.ElementMetaData used on opensource projects

Example 1 with ElementMetaData

use of org.datanucleus.metadata.ElementMetaData in project datanucleus-rdbms by datanucleus.

the class ReferenceMapping method prepareDatastoreMapping.

/**
 * Convenience method to create the necessary columns to represent this reference in the datastore.
 * With "per-implementation" mapping strategy will create columns for each of the possible implementations.
 * With "identity"/"xcalia" will create a single column to store a reference to the implementation value.
 * @param clr The ClassLoaderResolver
 */
protected void prepareDatastoreMapping(ClassLoaderResolver clr) {
    if (mappingStrategy == PER_IMPLEMENTATION_MAPPING) {
        // Mapping per reference implementation, so create columns for each possible implementation
        if (roleForMember == FieldRole.ROLE_ARRAY_ELEMENT) {
            // Creation of columns in join table for array of references
            ColumnMetaData[] colmds = null;
            ElementMetaData elemmd = mmd.getElementMetaData();
            if (elemmd != null && elemmd.getColumnMetaData() != null && elemmd.getColumnMetaData().length > 0) {
                // Column mappings defined at this side (1-N, M-N)
                colmds = elemmd.getColumnMetaData();
            }
            createPerImplementationColumnsForReferenceField(false, false, false, false, roleForMember, colmds, clr);
        } else if (roleForMember == FieldRole.ROLE_COLLECTION_ELEMENT) {
            // Creation of columns in join table for collection of references
            ColumnMetaData[] colmds = null;
            AbstractMemberMetaData[] relatedMmds = mmd.getRelatedMemberMetaData(clr);
            ElementMetaData elemmd = mmd.getElementMetaData();
            if (elemmd != null && elemmd.getColumnMetaData() != null && elemmd.getColumnMetaData().length > 0) {
                // Column mappings defined at this side (1-N, M-N)
                colmds = elemmd.getColumnMetaData();
            } else if (relatedMmds != null && relatedMmds[0].getJoinMetaData() != null && relatedMmds[0].getJoinMetaData().getColumnMetaData() != null && relatedMmds[0].getJoinMetaData().getColumnMetaData().length > 0) {
                // Column mappings defined at other side (M-N) on <join>
                colmds = relatedMmds[0].getJoinMetaData().getColumnMetaData();
            }
            createPerImplementationColumnsForReferenceField(false, false, false, false, roleForMember, colmds, clr);
        } else if (roleForMember == FieldRole.ROLE_MAP_KEY) {
            // Creation of columns in join table for map of references as keys
            ColumnMetaData[] colmds = null;
            KeyMetaData keymd = mmd.getKeyMetaData();
            if (keymd != null && keymd.getColumnMetaData() != null && keymd.getColumnMetaData().length > 0) {
                // Column mappings defined at this side (1-N, M-N)
                colmds = keymd.getColumnMetaData();
            }
            createPerImplementationColumnsForReferenceField(false, false, false, false, roleForMember, colmds, clr);
        } else if (roleForMember == FieldRole.ROLE_MAP_VALUE) {
            // Creation of columns in join table for map of references as values
            ColumnMetaData[] colmds = null;
            ValueMetaData valuemd = mmd.getValueMetaData();
            if (valuemd != null && valuemd.getColumnMetaData() != null && valuemd.getColumnMetaData().length > 0) {
                // Column mappings defined at this side (1-N, M-N)
                colmds = valuemd.getColumnMetaData();
            }
            createPerImplementationColumnsForReferenceField(false, false, false, false, roleForMember, colmds, clr);
        } else {
            if (mmd.getMappedBy() == null) {
                // Unidirectional 1-1
                boolean embedded = (mmd.isEmbedded() || mmd.getEmbeddedMetaData() != null);
                createPerImplementationColumnsForReferenceField(false, true, false, embedded, roleForMember, mmd.getColumnMetaData(), clr);
            } else {
                // Bidirectional 1-1/N-1
                AbstractClassMetaData refCmd = storeMgr.getNucleusContext().getMetaDataManager().getMetaDataForInterface(mmd.getType(), clr);
                if (refCmd != null && refCmd.getInheritanceMetaData().getStrategy() == InheritanceStrategy.SUBCLASS_TABLE) {
                    // TODO Is this block actually reachable ? Would we specify "inheritance" under "interface" elements?
                    // Find the actual tables storing the other end (can be multiple subclasses)
                    AbstractClassMetaData[] cmds = storeMgr.getClassesManagingTableForClass(refCmd, clr);
                    if (cmds != null && cmds.length > 0) {
                        if (cmds.length > 1) {
                            NucleusLogger.PERSISTENCE.warn("Field " + mmd.getFullFieldName() + " represents either a 1-1 relation, or a N-1 relation where the other end uses" + " \"subclass-table\" inheritance strategy and more than 1 subclasses with a table. " + "This is not fully supported currently");
                        }
                    } else {
                        // TODO Throw an exception ?
                        return;
                    }
                    // TODO We need a mapping for each of the possible subclass tables
                    /*JavaTypeMapping referenceMapping = */
                    storeMgr.getDatastoreClass(cmds[0].getFullClassName(), clr).getIdMapping();
                } else {
                    String[] implTypes = MetaDataUtils.getInstance().getImplementationNamesForReferenceField(mmd, FieldRole.ROLE_FIELD, clr, storeMgr.getMetaDataManager());
                    for (int j = 0; j < implTypes.length; j++) {
                        JavaTypeMapping refMapping = storeMgr.getDatastoreClass(implTypes[j], clr).getIdMapping();
                        JavaTypeMapping mapping = storeMgr.getMappingManager().getMapping(clr.classForName(implTypes[j]));
                        mapping.setReferenceMapping(refMapping);
                        this.addJavaTypeMapping(mapping);
                    }
                }
            }
        }
    } else if (mappingStrategy == ID_MAPPING || mappingStrategy == XCALIA_MAPPING) {
        // Single (String) column storing the identity of the related object
        MappingManager mapMgr = storeMgr.getMappingManager();
        JavaTypeMapping mapping = mapMgr.getMapping(String.class);
        mapping.setMemberMetaData(mmd);
        mapping.setTable(table);
        mapping.setRoleForMember(roleForMember);
        Column col = mapMgr.createColumn(mapping, String.class.getName(), 0);
        mapMgr.createDatastoreMapping(mapping, mmd, 0, col);
        this.addJavaTypeMapping(mapping);
    }
}

Example 2 with ElementMetaData

use of org.datanucleus.metadata.ElementMetaData in project datanucleus-rdbms by datanucleus.

the class ArrayTable method initialize.

/**
 * Method to initialise the table definition.
 * @param clr The ClassLoaderResolver
 */
@Override
public void initialize(ClassLoaderResolver clr) {
    super.initialize(clr);
    // Add field(s) for element
    boolean elementPC = (mmd.hasArray() && mmd.getArray().elementIsPersistent());
    if (isSerialisedElementPC() || isEmbeddedElementPC() || (isEmbeddedElement() && !elementPC) || ClassUtils.isReferenceType(mmd.getType().getComponentType())) {
        // Element = PC(embedded), PC(serialised), Non-PC(embedded), Reference
        elementMapping = storeMgr.getMappingManager().getMapping(this, mmd, clr, FieldRole.ROLE_ARRAY_ELEMENT);
        if (Boolean.TRUE.equals(mmd.getContainer().allowNulls())) {
            // Make all element col(s) nullable so we can store null elements
            for (int i = 0; i < elementMapping.getNumberOfColumnMappings(); i++) {
                Column elementCol = elementMapping.getColumnMapping(i).getColumn();
                elementCol.setNullable(true);
            }
        }
        if (NucleusLogger.DATASTORE.isDebugEnabled()) {
            logMapping(mmd.getFullFieldName() + ".[ELEMENT]", elementMapping);
        }
    } else {
        // Element = PC
        ColumnMetaData[] elemColmd = null;
        ElementMetaData elemmd = mmd.getElementMetaData();
        if (elemmd != null && elemmd.getColumnMetaData() != null && elemmd.getColumnMetaData().length > 0) {
            // Column mappings defined at this side (1-N, M-N)
            elemColmd = elemmd.getColumnMetaData();
        }
        elementMapping = ColumnCreator.createColumnsForJoinTables(mmd.getType().getComponentType(), mmd, elemColmd, storeMgr, this, false, true, FieldRole.ROLE_ARRAY_ELEMENT, clr, null);
        if (NucleusLogger.DATASTORE.isDebugEnabled()) {
            logMapping(mmd.getFullFieldName() + ".[ELEMENT]", elementMapping);
        }
    }
    boolean pkRequired = requiresPrimaryKey();
    PrimaryKeyMetaData pkmd = (mmd.getJoinMetaData() != null ? mmd.getJoinMetaData().getPrimaryKeyMetaData() : null);
    boolean pkColsSpecified = (pkmd != null ? pkmd.getColumnMetaData() != null : false);
    // Add order mapping
    ColumnMetaData colmd = null;
    if (mmd.getOrderMetaData() != null && mmd.getOrderMetaData().getColumnMetaData() != null && mmd.getOrderMetaData().getColumnMetaData().length > 0) {
        // Specified "order" column info
        colmd = mmd.getOrderMetaData().getColumnMetaData()[0];
    } else {
        // No column name so use default
        DatastoreIdentifier id = storeMgr.getIdentifierFactory().newIndexFieldIdentifier(mmd);
        colmd = new ColumnMetaData();
        colmd.setName(id.getName());
    }
    // JDO2 spec [18.5] order column is assumed to be "int"
    orderMapping = storeMgr.getMappingManager().getMapping(int.class);
    ColumnCreator.createIndexColumn(orderMapping, storeMgr, clr, this, colmd, pkRequired && !pkColsSpecified);
    if (NucleusLogger.DATASTORE.isDebugEnabled()) {
        logMapping(mmd.getFullFieldName() + ".[ORDER]", orderMapping);
    }
    // Define primary key of the join table (if any)
    if (pkRequired) {
        if (pkColsSpecified) {
            // Apply the users PK specification
            applyUserPrimaryKeySpecification(pkmd);
        } else {
            // Define PK
            for (int i = 0; i < ownerMapping.getNumberOfColumnMappings(); i++) {
                ownerMapping.getColumnMapping(i).getColumn().setPrimaryKey();
            }
        }
    }
    if (NucleusLogger.DATASTORE_SCHEMA.isDebugEnabled()) {
        NucleusLogger.DATASTORE_SCHEMA.debug(Localiser.msg("057023", this));
    }
    storeMgr.registerTableInitialized(this);
    state = TABLE_STATE_INITIALIZED;
}

Example 3 with ElementMetaData

use of org.datanucleus.metadata.ElementMetaData in project tests by datanucleus.

the class AnnotationTest method testOneToManyBiFK.

/**
 * Test of JPA 1-N bidir FK relation
 */
public void testOneToManyBiFK() {
    NucleusContext nucleusCtx = new PersistenceNucleusContextImpl("JPA", null);
    ClassLoaderResolver clr = nucleusCtx.getClassLoaderResolver(null);
    MetaDataManager metaDataMgr = new JPAMetaDataManager(nucleusCtx);
    PersistenceUnitMetaData pumd = getMetaDataForPersistenceUnit(nucleusCtx, "JPATest");
    metaDataMgr.loadPersistenceUnit(pumd, null);
    // owner side
    ClassMetaData cmd1 = (ClassMetaData) metaDataMgr.getMetaDataForClass(Manager.class.getName(), clr);
    AbstractMemberMetaData fmd1 = cmd1.getMetaDataForMember("departments");
    assertNotNull("Manager.departments is null!", fmd1);
    assertEquals("Manager.departments mapped-by is incorrect", fmd1.getMappedBy(), "manager");
    assertEquals("Manager.departments relationType is incorrect", fmd1.getRelationType(clr), RelationType.ONE_TO_MANY_BI);
    ElementMetaData elemmd = fmd1.getElementMetaData();
    assertNull("Manager.departments has join column info but shouldnt (specified on N side)", elemmd);
    // non-owner side
    ClassMetaData cmd2 = (ClassMetaData) metaDataMgr.getMetaDataForClass(Department.class.getName(), clr);
    AbstractMemberMetaData fmd2 = cmd2.getMetaDataForMember("manager");
    assertNotNull("Department.manager is null!", fmd2);
    assertEquals("Department.manager mapped-by is incorrect", fmd2.getMappedBy(), null);
    assertEquals("Department.manager relationType is incorrect", fmd2.getRelationType(clr), RelationType.MANY_TO_ONE_BI);
    ColumnMetaData[] colmds = fmd2.getColumnMetaData();
    assertNotNull("Department.manager has no join column info", colmds);
    assertEquals("Department.manager has incorrect number of joincolumns", colmds.length, 1);
    assertEquals("Department.manager joincolumn name is wrong", "MGR_ID", colmds[0].getName());
}

Example 4 with ElementMetaData

use of org.datanucleus.metadata.ElementMetaData in project tests by datanucleus.

the class AnnotationTest method testOneToManyBiJoin.

/**
 * Test of JPA 1-N unidir FK relation.
 * Really is 1-N uni join since JPA doesnt support 1-N uni FK
 */
/*public void testOneToManyUniFK()
    {
        NucleusContext nucleusCtx = new NucleusContext(new PersistenceConfiguration(){});
        nucleusCtx.setApi("JPA");
        MetaDataManager metaDataMgr = new JPAMetaDataManager(nucleusCtx);
        ClassLoaderResolver clr = new ClassLoaderResolverImpl();

        // owner side
        ClassMetaData cmd1 = (ClassMetaData)metaDataMgr.getMetaDataForClass(Site.class.getName(), clr);
        AbstractMemberMetaData fmd1 = cmd1.getMetaDataForMember("offices");
        assertNotNull("Site.offices is null!", fmd1);
        assertEquals("Site.offices mapped-by is incorrect", fmd1.getMappedBy(), null);
        assertEquals("Site.offices relationType is incorrect",
            fmd1.getRelationType(clr), Relation.ONE_TO_MANY_UNI);
        assertEquals("Site.offices jointable name is incorrect", fmd1.getTable(), null);
        assertNotNull("Site.offices should have join but doesnt", fmd1.getJoinMetaData());

        ElementMetaData elemmd = fmd1.getElementMetaData();
        assertNotNull("Site.offices has no element column info but should", elemmd);
        ColumnMetaData[] colmds = elemmd.getColumnMetaData();
        assertNotNull("Site.offices has incorrect element columns", colmds);
        assertEquals("Site.offices has incorrect number of element columns", colmds.length, 1);
        assertEquals("Site.offices has incorrect element column name", colmds[0].getName(), "SITE_ID");
    }*/
/**
 * Test of JPA 1-N bidir join relation
 */
public void testOneToManyBiJoin() {
    NucleusContext nucleusCtx = new PersistenceNucleusContextImpl("JPA", null);
    ClassLoaderResolver clr = nucleusCtx.getClassLoaderResolver(null);
    MetaDataManager metaDataMgr = new JPAMetaDataManager(nucleusCtx);
    PersistenceUnitMetaData pumd = getMetaDataForPersistenceUnit(nucleusCtx, "JPATest");
    metaDataMgr.loadPersistenceUnit(pumd, null);
    // owner side
    ClassMetaData cmd1 = (ClassMetaData) metaDataMgr.getMetaDataForClass(Manager.class.getName(), clr);
    assertEquals("Manager has incorrect table name", cmd1.getTable(), "JPA_AN_MANAGER");
    AbstractMemberMetaData fmd1 = cmd1.getMetaDataForMember("subordinates");
    assertNotNull("Manager.subordinates is null!", fmd1);
    assertEquals("Manager.subordinates mapped-by is incorrect", fmd1.getMappedBy(), "manager");
    assertEquals("Manager.subordinates relationType is incorrect", fmd1.getRelationType(clr), RelationType.ONE_TO_MANY_BI);
    assertEquals("Manager.subordinates jointable name is incorrect", fmd1.getTable(), "JPA_AN_MGR_EMPLOYEES");
    // non-owner side
    ClassMetaData cmd2 = (ClassMetaData) metaDataMgr.getMetaDataForClass(Employee.class.getName(), clr);
    assertEquals("Employee has incorrect table name", cmd2.getTable(), "JPA_AN_EMPLOYEE");
    AbstractMemberMetaData fmd2 = cmd2.getMetaDataForMember("manager");
    assertNotNull("Employee.manager is null!", fmd2);
    assertEquals("Employee.manager mapped-by is incorrect", fmd2.getMappedBy(), null);
    assertEquals("Employee.manager relationType is incorrect", fmd2.getRelationType(clr), RelationType.MANY_TO_ONE_BI);
    assertEquals("Employee.manager jointable name is incorrect", fmd2.getTable(), null);
    // join-table
    JoinMetaData joinmd = fmd1.getJoinMetaData();
    assertNotNull("Manager.subordinates has no join table!", joinmd);
    assertNotNull("Manager.subordinates has incorrect join columns", joinmd.getColumnMetaData());
    assertEquals("Manager.subordinates has incorrect number of join columns", 1, joinmd.getColumnMetaData().length);
    assertEquals("Manager.subordinates has incorrect owner join column name", "MGR_ID", joinmd.getColumnMetaData()[0].getName());
    ElementMetaData elemmd = fmd1.getElementMetaData();
    assertNotNull("Manager.subordinates has no element column info but should", elemmd);
    assertNotNull("Manager.subordinates has incorrect element columns", elemmd.getColumnMetaData());
    assertEquals("Manager.subordinates has incorrect number of element columns", 1, elemmd.getColumnMetaData().length);
    assertEquals("Manager.subordinates has incorrect element join column name", "EMP_ID", elemmd.getColumnMetaData()[0].getName());
}

Example 5 with ElementMetaData

use of org.datanucleus.metadata.ElementMetaData in project tests by datanucleus.

the class XMLTest method testOneToManyUniJoin.

/**
 * Test of JPA 1-N unidir JoinTable relation
 */
public void testOneToManyUniJoin() {
    NucleusContext nucleusCtx = new PersistenceNucleusContextImpl("JPA", null);
    ClassLoaderResolver clr = nucleusCtx.getClassLoaderResolver(null);
    MetaDataManager metaDataMgr = new JPAMetaDataManager(nucleusCtx);
    PersistenceUnitMetaData pumd = getMetaDataForPersistenceUnit(nucleusCtx, "JPATest");
    metaDataMgr.loadPersistenceUnit(pumd, null);
    // owner side
    ClassMetaData cmd1 = (ClassMetaData) metaDataMgr.getMetaDataForClass(Department.class.getName(), clr);
    AbstractMemberMetaData fmd1 = cmd1.getMetaDataForMember("projects");
    assertNotNull("Department.projects is null!", fmd1);
    assertEquals("Department.projects mapped-by is incorrect", null, fmd1.getMappedBy());
    assertEquals("Department.projects relationType is incorrect", RelationType.ONE_TO_MANY_UNI, fmd1.getRelationType(clr));
    assertEquals("Department.projects jointable name is incorrect", "JPA_MD_DEPT_PROJECTS", fmd1.getTable());
    JoinMetaData joinmd = fmd1.getJoinMetaData();
    assertNotNull("Department.projects has no join table!", joinmd);
    assertNotNull("Department.projects has incorrect join columns", joinmd.getColumnMetaData());
    assertEquals("Department.projects has incorrect number of join columns", 1, joinmd.getColumnMetaData().length);
    assertEquals("Department.projects has incorrect join column name", joinmd.getColumnMetaData()[0].getName(), "DEPT_ID");
    ElementMetaData elemmd = fmd1.getElementMetaData();
    assertNotNull("Department.projects has no element column info but should", elemmd);
    ColumnMetaData[] colmds = elemmd.getColumnMetaData();
    assertNotNull("Department.projects has incorrect element columns", colmds);
    assertEquals("Department.projects has incorrect number of element columns", 1, colmds.length);
    assertEquals("Department.projects has incorrect element column name", "PROJECT_ID", colmds[0].getName());
}