Package org.apache.openjpa.jdbc.sql

Examples of org.apache.openjpa.jdbc.sql.Union$Selector

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                    return rops[0];
                return new MergedResultObjectProvider(rops);
            }

            // perform a union on all independent classes
            Union union = _sql.newUnion(mappings.length);
            union.setLRS(true);
            final BitSet[] paged = new BitSet[mappings.length];
            union.select(new Union.Selector() {
                public void select(Select sel, int idx) {
                    paged[idx] = selectExtent(sel, mappings[idx], jfetch,
                        subclasses);
                }
            });
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        if (!(sel instanceof Union))
            selectEager((Select) sel, getDefaultElementMapping(true), sm,
                store, fetch, eagerMode, true, false);
        else {
            final ClassMapping[] elems = getIndependentElementMappings(true);
            Union union = (Union) sel;
            if (fetch.getSubclassFetchMode(field.getElementMapping().
                getTypeMapping()) != fetch.EAGER_JOIN)
                union.abortUnion();
            union.select(new Union.Selector() {
                public void select(Select sel, int idx) {
                    selectEager(sel, elems[idx], sm, store, fetch, eagerMode,
                        true, false);
                }
            });
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        }

        // select data for this sm
        final ClassMapping[] elems = getIndependentElementMappings(true);
        final Joins[] resJoins = new Joins[Math.max(1, elems.length)];
        Union union = store.getSQLFactory().newUnion
            (Math.max(1, elems.length));
        union.select(new Union.Selector() {
            public void select(Select sel, int idx) {
                ClassMapping elem = (elems.length == 0) ? null : elems[idx];
                resJoins[idx] = selectAll(sel, elem, sm, store, fetch,
                    JDBCFetchConfiguration.EAGER_PARALLEL);
            }
        });

        // create proxy
        Object coll;
        ChangeTracker ct = null;
        if (field.getTypeCode() == JavaTypes.ARRAY)
            coll = new ArrayList();
        else {
            coll = sm.newProxy(field.getIndex());
            if (coll instanceof Proxy)
                ct = ((Proxy) coll).getChangeTracker();
        }

        // load values
        Result res = union.execute(store, fetch);
        try {
            int seq = -1;
            while (res.next()) {
                if (ct != null && field.getOrderColumn() != null)
                    seq = res.getInt(field.getOrderColumn());
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        final JDBCFetchConfiguration fetch) throws SQLException {
        final JDBCStoreManager store = this;
        final int eager = Math.min(fetch.getEagerFetchMode(),
            JDBCFetchConfiguration.EAGER_JOIN);

        Union union = _sql.newUnion(mappings.length);
        union.setExpectedResultCount(1, false);
        if (fetch.getSubclassFetchMode(mapping) != fetch.EAGER_JOIN)
            union.abortUnion();
        union.select(new Union.Selector() {
            public void select(Select sel, int i) {
                sel.select(mappings[i], Select.SUBS_ANY_JOINABLE, store, fetch,
                    eager);
                sel.wherePrimaryKey(sm.getObjectId(), mappings[i], store);
            }
        });
        return union.execute(this, fetch);
    }
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                    return rops[0];
                return new MergedResultObjectProvider(rops);
            }

            // perform a union on all independent classes
            Union union = _sql.newUnion(mappings.length);
            union.setLRS(true);
            final BitSet[] paged = new BitSet[mappings.length];
            union.select(new Union.Selector() {
                public void select(Select sel, int idx) {
                    paged[idx] = selectExtent(sel, mappings[idx], jfetch,
                        subclasses);
                }
            });
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            && (start != range.start || end != range.end));

        ResultObjectProvider[] rops = null;
        ResultObjectProvider rop = null;
        if (unionable) {
            Union union = _store.getSQLFactory().newUnion(
                (Select[]) sels.toArray(new Select[sels.size()]));
            BitSet[] paged = populateUnion(union, mappings, subclasses, facts,
                exps, states, ctx, lrs, eager, start, end);
            union.setLRS(lrs);
            rop = executeUnion(union, mappings, exps, states, ctx, paged);
        } else {
            if (sels.size() > 1)
                rops = new ResultObjectProvider[sels.size()];
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            subclassMode) && subclassMode == JDBCFetchConfiguration.EAGER_JOIN;
        if (sels.size() > 1)
            start = 0L;

        if (unionable) {
            Union union = _store.getSQLFactory().newUnion(
                (Select[]) sels.toArray(new Select[sels.size()]));
            populateUnion(union, mappings, subclasses, facts, exps, states, ctx,
                false, eager, start, end);
            if (union.isUnion())
                return new String[] {union.toSelect(false, fetch).getSQL(true)};
            sels = Arrays.asList(union.getSelects());
        } else {
            Select sel;
            for (int i = 0, idx = 0; i < sels.size(); i++) {
                sel = (Select) sels.get(i);
                populateSelect(sel, (ClassMapping) selMappings.get(i),
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            && (start != range.start || end != range.end));

        ResultObjectProvider[] rops = null;
        ResultObjectProvider rop = null;
        if (unionable) {
            Union union = _store.getSQLFactory().newUnion(
                (Select[]) sels.toArray(new Select[sels.size()]));
            BitSet[] paged = populateUnion(union, mappings, subclasses, facts,
                exps, states, ctx, lrs, eager, start, end);
            union.setLRS(lrs);
            rop = executeUnion(union, mappings, exps, states, ctx, paged);
        } else {
            if (sels.size() > 1)
                rops = new ResultObjectProvider[sels.size()];
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            subclassMode) && subclassMode == JDBCFetchConfiguration.EAGER_JOIN;
        if (sels.size() > 1)
            start = 0L;

        if (unionable) {
            Union union = _store.getSQLFactory().newUnion(
                (Select[]) sels.toArray(new Select[sels.size()]));
            populateUnion(union, mappings, subclasses, facts, exps, states, ctx,
                false, eager, start, end);
            if (union.isUnion())
                return new String[] {union.toSelect(false, fetch).getSQL(true)};
            sels = Arrays.asList(union.getSelects());
        } else {
            Select sel;
            for (int i = 0, idx = 0; i < sels.size(); i++) {
                sel = (Select) sels.get(i);
                populateSelect(sel, (ClassMapping) selMappings.get(i),
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    protected int count() {
        final ClassMapping[] elems = _strat.getIndependentElementMappings
            (false);
        final OpenJPAStateManager sm = assertOwner();
        final JDBCStore store = getStore();
        Union union = store.getSQLFactory().newUnion
            (Math.max(1, elems.length));
        union.select(new Union.Selector() {
            public void select(Select sel, int idx) {
                ClassMapping elem = (elems.length == 0) ? null : elems[idx];
                sel.whereForeignKey(_strat.getJoinForeignKey(elem),
                    sm.getObjectId(), _strat.getFieldMapping().
                    getDefiningMapping(), store);
            }
        });

        try {
            return union.getCount(store);
        } catch (SQLException se) {
            throw SQLExceptions.getStore(se, store.getDBDictionary());
        }
    }
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