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

org.apache.openjpa.jdbc.meta.Joinable
Represents a value that can be joined to. Any column that a user joins to must be "owned" by an entity that implements this interface. The system maps columns to joinables to be able to decompose oids and field values into individual join values on a per-column basis. This allows us to support joins to only some of the columns of a mapping, and to be loose with the ordering of foreign key columns relative to the ordering of the joined-to columns. Having a separate interface for joinables also allows us to perform tricks such as a vertically-mapped application identity subclass transparently transforming columns of its foreign key to the corresponding primary key fields in the base class. @author Abe White

        }
        if (set && !canSetAny(io, fromCols.length, false))
            return;


        ClassMapping toMapping = (ClassMapping) to.getMetaData();
        Joinable join;
        Object val;
        for (int i = 0; i < toCols.length; i++) {
            // don't even translate join value if unsettable
            if (set) {
                if (_action == ACTION_INSERT && fromCols[i].isAutoAssigned())
                    continue;
                if (!canSet(io, i, false))
                    continue;
            }


            join = toMapping.assertJoinable(toCols[i]);
            val = join.getJoinValue(to, toCols[i], (JDBCStore) to.
                getContext().getStoreManager().getInnermostDelegate());
            if (set && val == null) {
                if (canSet(io, i, true))
                    setNull(fromCols[i]);
            } else if (set && val instanceof Raw)

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        col = field.getForeignKey().getPrimaryKeyColumn(col);
        if (col == null)
            throw new InternalException();


        ClassMapping relmapping = field.getTypeMapping();
        Joinable j = field.getTypeMapping().assertJoinable(col);
        if (ImplHelper.isManageable(fieldVal))
            fieldVal = store.getContext().getObjectId(fieldVal);
        if (fieldVal instanceof OpenJPAId)
            fieldVal = ((OpenJPAId) fieldVal).getIdObject();
        if (relmapping.getObjectIdType() != null
            && relmapping.getObjectIdType().isInstance(fieldVal)) {
            Object[] pks = ApplicationIds.toPKValues(fieldVal, relmapping);
            fieldVal = pks[relmapping.getField(j.getFieldIndex()).
                getPrimaryKeyIndex()];
        }
        return j.getJoinValue(fieldVal, col, store);
    }

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            pk.setLogical(!adapt);
            pk.setColumns(pkCols);
        }


        // map joinables
        Joinable join;
        Column[] cols;
        for (int i = 0; i < pkCols.length; i++) {
            // may have already registered a multi-column joinable
            if (cls.getJoinable(pkCols[i]) != null)
                continue;


            // create joinable that delegates all methods to the superclass'
            // joinable, but changes the columns as appropriate using
            // our superclass join fk
            join = sup.assertJoinable(fk.getPrimaryKeyColumn(pkCols[i]));
            join = new DelegatingJoinable(join, fk);
            cols = join.getColumns();
            for (int j = 0; j < cols.length; j++)
                cls.setJoinable(cols[j], join);
        }
    }

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      boolean collectParmValueOnly = (parmList != null ? true : false);
        Object[] pks = null;
        if (mapping.getIdentityType() == ClassMapping.ID_APPLICATION)
            pks = ApplicationIds.toPKValues(oid, mapping);


        Joinable join;
        Object val;
        int count = 0;
        for (int i = 0; i < toCols.length; i++, count++) {
            if (pks == null)
                val = (oid == null) ? null : Numbers.valueOf(((Id) oid).getId());
            else {
                // must be app identity; use pk index to get correct pk value
                join = mapping.assertJoinable(toCols[i]);
                val = pks[mapping.getField(join.getFieldIndex()).
                    getPrimaryKeyIndex()];
                val = join.getJoinValue(val, toCols[i], store);
                if (parmList != null)
                  parmList.add(val);
            }
            
            if (collectParmValueOnly)

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      boolean collectParmValueOnly = (parmList != null ? true : false);
        Object[] pks = null;
        if (mapping.getIdentityType() == ClassMapping.ID_APPLICATION)
            pks = ApplicationIds.toPKValues(oid, mapping);


        Joinable join;
        Object val;
        int count = 0;
        for (int i = 0; i < toCols.length; i++, count++) {
            if (pks == null)
                val = (oid == null) ? null : Numbers.valueOf(((Id) oid).getId());
            else {
                // must be app identity; use pk index to get correct pk value
                join = mapping.assertJoinable(toCols[i]);
                val = pks[mapping.getField(join.getFieldIndex()).
                    getPrimaryKeyIndex()];
                val = join.getJoinValue(val, toCols[i], store);
                if (parmList != null)
                  parmList.add(val);
            }
            
            if (collectParmValueOnly)

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        col = field.getForeignKey().getPrimaryKeyColumn(col);
        if (col == null)
            throw new InternalException();


        ClassMapping relmapping = field.getTypeMapping();
        Joinable j = field.getTypeMapping().assertJoinable(col);
        if (ImplHelper.isManageable(fieldVal))
            fieldVal = store.getContext().getObjectId(fieldVal);
        if (fieldVal instanceof OpenJPAId)
            fieldVal = ((OpenJPAId) fieldVal).getIdObject();
        if (relmapping.getObjectIdType() != null
            && relmapping.getObjectIdType().isInstance(fieldVal)) {
            Object[] pks = ApplicationIds.toPKValues(fieldVal, relmapping);
            fieldVal = pks[relmapping.getField(j.getFieldIndex()).
                getPrimaryKeyIndex()];
        }
        return j.getJoinValue(fieldVal, col, store);
    }

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        Object[] pks = null;
        if (mapping.getIdentityType() == ClassMapping.ID_APPLICATION)
            pks = ApplicationIds.toPKValues(oid, mapping);


        SQLBuffer buf = new SQLBuffer(_dict);
        Joinable join;
        Object val;
        int count = 0;
        for (int i = 0; i < toCols.length; i++, count++) {
            if (pks == null)
                val = (oid == null) ? null :
                        Numbers.valueOf(((Id) oid).getId());
            else {
                // must be app identity; use pk index to get correct pk value
                join = mapping.assertJoinable(toCols[i]);
                val = pks[mapping.getField(join.getFieldIndex()).
                    getPrimaryKeyIndex()];
                val = join.getJoinValue(val, toCols[i], store);
            }


            if (count > 0)
                buf.append(" AND ");
            buf.append(getColumnAlias(fromCols[i], pj));

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            throw new InternalException();
        
        Object savedFieldVal = fieldVal;


        ClassMapping relmapping = field.getTypeMapping();
        Joinable j = field.getTypeMapping().assertJoinable(col);
        if (ImplHelper.isManageable(fieldVal) && !field.getDefiningMetaData().useIdClassFromParent())
            fieldVal = store.getContext().getObjectId(fieldVal);
        if (fieldVal instanceof OpenJPAId)
            fieldVal = ((OpenJPAId) fieldVal).getIdObject();
        if (relmapping.getObjectIdType() != null
            && relmapping.getObjectIdType().isInstance(fieldVal)) {
            Object[] pks = ApplicationIds.toPKValues(fieldVal, relmapping);
            fieldVal = pks[relmapping.getField(j.getFieldIndex()).
                getPrimaryKeyIndex()];
        } else if (relmapping.getObjectIdType() == ObjectId.class && 
            relmapping.getPrimaryKeyFieldMappings()[0].getValueMapping().isEmbedded()) {
            return j.getJoinValue(savedFieldVal, col, store);
        }
        return j.getJoinValue(fieldVal, col, store);
    }

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        col = field.getForeignKey().getPrimaryKeyColumn(col);
        if (col == null)
            throw new InternalException();


        ClassMapping relmapping = field.getTypeMapping();
        Joinable j = field.getTypeMapping().assertJoinable(col);
        if (ImplHelper.isManageable(fieldVal))
            fieldVal = store.getContext().getObjectId(fieldVal);
        if (fieldVal instanceof OpenJPAId)
            fieldVal = ((OpenJPAId) fieldVal).getIdObject();
        else if (relmapping.getObjectIdType() != null
            && relmapping.getObjectIdType().isInstance(fieldVal)) {
            Object[] pks = ApplicationIds.toPKValues(fieldVal, relmapping);
            fieldVal = pks[relmapping.getField(j.getFieldIndex()).
                getPrimaryKeyIndex()];
        }
        return j.getJoinValue(fieldVal, col, store);
    }

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        Object[] pks = null;
        if (mapping.getIdentityType() == ClassMapping.ID_APPLICATION)
            pks = ApplicationIds.toPKValues(oid, mapping);


        SQLBuffer buf = new SQLBuffer(_dict);
        Joinable join;
        Object val;
        int count = 0;
        for (int i = 0; i < toCols.length; i++, count++) {
            if (pks == null)
                val = (oid == null) ? null : Numbers.valueOf(((Id) oid).getId());
            else {
                // must be app identity; use pk index to get correct pk value
                join = mapping.assertJoinable(toCols[i]);
                val = pks[mapping.getField(join.getFieldIndex()).
                    getPrimaryKeyIndex()];
                val = join.getJoinValue(val, toCols[i], store);
            }


            if (count > 0)
                buf.append(" AND ");
            buf.append(getColumnAlias(fromCols[i], pj));

View Full Code Here

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