Package org.apache.openjpa.jdbc.meta

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

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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;
        }

        // only bother to pack pk values into array if app id
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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.field.isElementCollection() && pstate.field.getElement().isEmbedded()) {
                        Strategy strategy = pstate.field.getStrategy();
                        if (strategy instanceof HandlerCollectionTableFieldStrategy) {
                            return ((HandlerCollectionTableFieldStrategy) strategy).
                                getElementColumns(elem.getTypeMapping());
                        } else if (strategy instanceof HandlerHandlerMapTableFieldStrategy) {
                            return ((HandlerHandlerMapTableFieldStrategy) strategy).
                            getValueColumns(elem.getTypeMapping());
                        }
                    }
                    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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        if (mapField == null)
            return;
       
        Map mapObj = (Map)rel.fetchObjectField(mapField.getIndex());
        Object keyObj = getMapKeyObj(mapObj, sm.getPersistenceCapable());
        ValueMapping key = mapField.getKeyMapping();
        if (!key.isEmbedded()) {
            if (keyObj instanceof PersistenceCapable) {
                OpenJPAStateManager keySm = RelationStrategies.
                    getStateManager(keyObj, store.getContext());
                // key is an entity
                ForeignKey fk = mapField.getKeyMapping().
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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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     * 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;
        }

        // only bother to pack pk values into array if app id
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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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     * 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;
        }

        // only bother to pack pk values into array if app id
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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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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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