Package org.apache.openjpa.jdbc.meta

Examples of org.apache.openjpa.jdbc.meta.ValueMapping

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        return field.join(joins, forceOuter, true);
    }

    public Joins joinRelation(Joins joins, boolean forceOuter,
        boolean traverse) {
        ValueMapping elem = field.getElementMapping();
        ClassMapping[] clss = elem.getIndependentTypeMappings();
        if (clss.length != 1) {
            if (traverse)
                throw RelationStrategies.unjoinable(elem);
            return joins;
        }
        if (forceOuter)
            return joins.outerJoinRelation(field.getName(),
                elem.getForeignKey(clss[0]), clss[0],
                elem.getSelectSubclasses(), false, false);
        return joins.joinRelation(field.getName(), elem.getForeignKey(clss[0]),
            clss[0], elem.getSelectSubclasses(), false, false);
    }
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    private static final Localizer _loc = Localizer.forPackage
        (EmbeddedClassStrategy.class);

    public void map(boolean adapt) {
        ValueMapping vm = cls.getEmbeddingMapping();
        if (vm == null || vm.getType() != cls.getDescribedType())
            throw new MetaDataException(_loc.get("not-embed", cls));

        ClassMappingInfo info = cls.getMappingInfo();
        info.assertNoSchemaComponents(cls, true);

        ClassMapping owner = vm.getFieldMapping().getDefiningMapping();
        cls.setIdentityType(owner.getIdentityType());
        cls.setObjectIdType(owner.getObjectIdType(),
            owner.isObjectIdTypeShared());
        cls.setTable(vm.getFieldMapping().getTable());
        cls.setPrimaryKeyColumns(owner.getPrimaryKeyColumns());
        cls.setColumnIO(owner.getColumnIO());
    }
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     * given columns.
     */
    private void where(Object oid, ClassMapping mapping, Column[] toCols,
        Column[] fromCols, Object[] vals, Column[] constCols, PathJoins pj,
        JDBCStore store) {
        ValueMapping embed = mapping.getEmbeddingMapping();
        if (embed != null) {
            where(oid, embed.getFieldMapping().getDefiningMapping(),
                toCols, fromCols, vals, constCols, pj, store);
            return;
        }

        SQLBuffer buf = new SQLBuffer(_dict);
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        if (pstate.field != null) {
            switch (pstate.field.getTypeCode()) {
                case JavaTypes.MAP:
                case JavaTypes.ARRAY:
                case JavaTypes.COLLECTION:
                    ValueMapping elem = pstate.field.getElementMapping();
                    if (pstate.joinedRel && elem.getTypeCode() == JavaTypes.PC)
                        return elem.getTypeMapping().getPrimaryKeyColumns();
                    if (elem.getColumns().length > 0)
                        return elem.getColumns();
                    return pstate.field.getColumns();
                case JavaTypes.PC:
                    if (pstate.joinedRel)
                        return pstate.field.getTypeMapping().
                            getPrimaryKeyColumns();
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    /**
     * Return whether the given source field joins to the given target field.
     */
    private static boolean isJoinedField(FieldMapping src, boolean key,
        FieldMapping target) {
        ValueMapping vm;
        switch (src.getTypeCode()) {
            case JavaTypes.ARRAY:
            case JavaTypes.COLLECTION:
                vm = src.getElementMapping();
                break;
            case JavaTypes.MAP:
                vm = (key) ? src.getKeyMapping() : src.getElementMapping();
                break;
            default:
                vm = src;
        }
        if (vm.getJoinDirection() != ValueMapping.JOIN_FORWARD)
            return false;
        ForeignKey fk = vm.getForeignKey();
        if (fk == null)
            return false;
       
        // foreign key must join to target columns
        Column[] rels = fk.getColumns();
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     * given columns.
     */
    private void where(Object oid, ClassMapping mapping, Column[] toCols,
        Column[] fromCols, Object[] vals, Column[] constCols, PathJoins pj,
        JDBCStore store) {
        ValueMapping embed = mapping.getEmbeddingMapping();
        if (embed != null) {
            where(oid, embed.getFieldMapping().getDefiningMapping(),
                toCols, fromCols, vals, constCols, pj, store);
            return;
        }

        SQLBuffer buf = new SQLBuffer(_dict);
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    public void testNonpolymorphic() {
        FieldMapping fm = _mapping.getFieldMapping("superRel");
        assertEquals(ValueMapping.POLY_FALSE, fm.getPolymorphic());

        ValueMapping vm = _mapping.getFieldMapping("joinCollection").
            getElementMapping();
        assertEquals(ValueMapping.POLY_JOINABLE, vm.getPolymorphic());

        vm = _mapping.getFieldMapping("joinMap").getKeyMapping();
        assertEquals(ValueMapping.POLY_FALSE, vm.getPolymorphic());
        vm = _mapping.getFieldMapping("joinMap").getElementMapping();
        assertEquals(ValueMapping.POLY_FALSE, vm.getPolymorphic());
    }
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        // for inverseEager field
        FieldMapping mappedByFieldMapping = field.getMappedByMapping();
        PersistenceCapable mappedByValue = null;

        if (mappedByFieldMapping != null) {
            ValueMapping val = mappedByFieldMapping.getValueMapping();
            ClassMetaData decMeta = val.getTypeMetaData();
            // eager loading a child from its toOne parent and
            // the parent has @OneToOne(mappedBy="parent") child relation.
            // By saving the mapped-by info in 'res' is to
            // avoid unneeded SQL pushdown that would otherwise gets
            // generated.
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    private void setMappedBy(Object oid, Result res) {
        //  for inverse toOne relation field
        FieldMapping mappedByFieldMapping = field.getMappedByMapping();
       
        if (mappedByFieldMapping != null) {
            ValueMapping val = mappedByFieldMapping.getValueMapping();
            ClassMetaData decMeta = val.getTypeMetaData();
            // this inverse field does not have corresponding classMapping
            // its value may be a collection/map etc.
            if (decMeta == null)
                return;
           
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        // for inverseEager field
        FieldMapping mappedByFieldMapping = field.getMappedByMapping();
        PersistenceCapable mappedByValue = null;
       
        if (mappedByFieldMapping != null) {
            ValueMapping val = mappedByFieldMapping.getValueMapping();
            ClassMetaData decMeta = val.getTypeMetaData();
            // this inverse field does not have corresponding classMapping
            // its value may be a collection/map etc.
            if (decMeta == null)
                return;
         
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Related Classes of org.apache.openjpa.jdbc.meta.ValueMapping

  • org.apache.openjpa.jdbc.kernel.exps.PCPath
  • org.apache.openjpa.jdbc.meta.strats.EmbeddedClassStrategy
  • org.apache.openjpa.jdbc.meta.strats.EmbedValueHandler
  • org.apache.openjpa.jdbc.meta.strats.MapTableFieldStrategy
  • org.apache.openjpa.jdbc.meta.strats.ObjectIdClassStrategy
  • org.apache.openjpa.jdbc.meta.strats.RelationFieldStrategy
  • org.apache.openjpa.jdbc.meta.strats.RelationMapInverseKeyFieldStrategy
  • org.apache.openjpa.jdbc.meta.strats.RelationMapTableFieldStrategy
  • org.apache.openjpa.jdbc.meta.strats.RelationToManyInverseKeyFieldStrategy
  • org.apache.openjpa.jdbc.meta.strats.RelationToManyTableFieldStrategy
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