Examples of org.apache.openjpa.meta.ClassMetaData

org.apache.openjpa.meta.ClassMetaData
Contains metadata about a persistent type. This metadata is available both at enhancement time and runtime. Note that this class employs aggressive caching, and therefore it is important to finalize the configuration of field metadatas before invoking methods that depend on that configuration, such as {@link #getPrimaryKeyFields}. @author Abe White


    private Value getIdentifier(JPQLNode node) {
        final String name = node.text;
        final Value val = getVariable(name, false);


        ClassMetaData cmd = getMetaDataForAlias(name);


        if (cmd != null) {
            // handle the case where the class name is the alias
            // for the candidate (we don't use variables for this)
            Value thiz = factory.getThis();

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        return path;
    }


    protected Class getDeclaredVariableType(String name) {
        ClassMetaData cmd = getMetaDataForAlias(name);
        if (cmd != null)
            return cmd.getDescribedType();


        if (name != null && name.equals(ctx().schemaAlias))
            return getCandidateType();


        // JPQL has no declared variables

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                chain.addIterator(new FilterNewIterator());


            // add database iterators for each implementing class
            MetaDataRepository repos = _broker.getConfiguration().
                getMetaDataRepositoryInstance();
            ClassMetaData meta = repos.getMetaData(_type,
                _broker.getClassLoader(), false);


            ClassMetaData[] metas;
            if (meta != null && (!_subs || !meta.isManagedInterface())
                && (meta.isMapped() || (_subs
                && meta.getMappedPCSubclassMetaDatas().length > 0)))
                metas = new ClassMetaData[]{ meta };
            else if (_subs && (meta == null || meta.isManagedInterface()))
                metas = repos.getImplementorMetaDatas(_type,
                    _broker.getClassLoader(), false);
            else
                metas = EMPTY_METAS;

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        for (Root<?> root : q.getRoots()) {
            metas.add(((AbstractManagedType<?>)root.getModel()).meta);
            for (Join<?,?> join : root.getJoins()) {
                Class<?> cls = join.getAttribute().getJavaType();
                if (join.getAttribute().isAssociation()) {
                    ClassMetaData meta = metamodel.getRepository().getMetaData(cls, null, true);
                    PersistenceType type = MetamodelImpl.getPersistenceType(meta);
                    if (type == PersistenceType.ENTITY || type == PersistenceType.EMBEDDABLE) 
                        metas.add(meta);
                }
            }

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        boolean contains(Class<?> cls) {
            if (_replicatedTypes.contains(cls))
                return true;
            if (_nonreplicatedTypes.contains(cls)) 
                return false;
            ClassMetaData meta = repos.getMetaData(cls, null, false);
            if (meta == null) {
                _nonreplicatedTypes.add(cls);
                return false;
            }
            boolean replicated = names.contains(meta.getDescribedType().getName());
            if (replicated) {
                _replicatedTypes.add(cls);
            } else {
                _nonreplicatedTypes.add(cls);
            }

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        repo = emf.getConfiguration().getMetaDataRepositoryInstance();
    }


    public void testEmbeddedId() throws Exception {
        ClassMetaData cmd = repo.getMetaData(EmbeddedIdEntity.class, null, true);
        try {
            JPAFacadeHelper.toOpenJPAObjectId(cmd, new EmbeddedIdEntity());
            fail("Didn't fail!");
        } catch (UserException re) {
            // expected

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        assertEquals(oid, JPAFacadeHelper.toOpenJPAObjectId(cmd, id));
    }


    public void testCompositeId() throws Exception {
        ClassMetaData cmd = repo.getMetaData(EntityWithCompositeId.class, null, true);
        try {
            JPAFacadeHelper.toOpenJPAObjectId(cmd, new EntityWithCompositeId());
            fail("Didn't fail!");
        } catch (UserException re) {
            // expected

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        assertEquals(oid, JPAFacadeHelper.toOpenJPAObjectId(cmd, id));
    }


    public void testBasic() throws Exception {
        ClassMetaData cmd = repo.getMetaData(BasicEntity.class, null, true);
        try {
            JPAFacadeHelper.toOpenJPAObjectId(cmd, new BasicEntity());
            fail("Didn't fail!");
        } catch (UserException re) {
            // expected

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        Object o = JPAFacadeHelper.toOpenJPAObjectId(cmd, entity.getId());
        assertEquals(o, JPAFacadeHelper.toOpenJPAObjectId(cmd, o));
    }


    public void testIntegerId() {
        ClassMetaData cmd = repo.getMetaData(Person.class, null, true);
        try {
            JPAFacadeHelper.toOpenJPAObjectId(cmd, new Person());
            fail("Didn't fail!");
        } catch (UserException re) {
            // expected

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        assertEquals(oid, JPAFacadeHelper.toOpenJPAObjectId(cmd, id));
    }


    public void testDoubleId() {
        ClassMetaData cmd = repo.getMetaData(DoubleObjIdEntity.class, null, true);
        try {
            JPAFacadeHelper.toOpenJPAObjectId(cmd, new DoubleObjIdEntity());
            fail("Didn't fail!");
        } catch (UserException re) {
            // expected

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