Examples of Joins

org.apache.openjpa.jdbc.sql.Joins
Tracks joins made when traversing relations in a select. @author Abe White

Examples of org.apache.openjpa.jdbc.sql.Joins

        // add class conditions so that they're cloned for any batched selects
        boolean joinedSupers = false;
        if ((sm == null || sm.getPCState() == PCState.TRANSIENT)
            && (subs == Select.SUBS_JOINABLE || subs == Select.SUBS_NONE)) {
            loadSubclasses(mapping); 
            Joins joins = (outer) ? sel.newOuterJoins() : null;
            joinedSupers = mapping.getDiscriminator().addClassConditions(sel,
                subs == Select.SUBS_JOINABLE, joins);
        }


        // create all our eager selects so that those fields are reserved

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Examples of org.apache.openjpa.jdbc.sql.Joins

        // using a variable guarantees that the selected data will use different
        // aliases and joins than any existing WHERE conditions on this field
        // that might otherwise limit the elements of the field that match
        if (selectOid)
            sel.orderByPrimaryKey(field.getDefiningMapping(), true, true);
        Joins joins = sel.newJoins().setVariable("*");
        joins = join(joins, elem);


        // order, ref cols
        if (field.getOrderColumn() != null || field.getOrders().length > 0
            || !selectOid) {

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Examples of org.apache.openjpa.jdbc.sql.Joins

        throws SQLException {
        // do same joins as for load
        //### cheat: we know typical result joins only care about the relation
        //### path; thus we can ignore different mappings
        ClassMapping elem = getDefaultElementMapping(true);
        Joins dataJoins = res.newJoins().setVariable("*");
        dataJoins = join(dataJoins, elem);
        dataJoins = joinElementRelation(dataJoins, elem);
        Joins orderJoins = null;
        if (field.getOrderColumn() != null) {
            orderJoins = res.newJoins().setVariable("*");
            orderJoins = join(orderJoins, elem);
        }

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Examples of org.apache.openjpa.jdbc.sql.Joins

        if (field.getTypeCode() == JavaTypes.ARRAY)
            coll = new ArrayList();
        else
            coll = sm.newProxy(field.getIndex());


        Joins dataJoins = null;
        Joins refJoins = res.newJoins().setVariable("*");
        join(refJoins, false);


        ClassMapping ownerMapping = field.getDefiningMapping();
        Object ref = null;
        int seq = 0;

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Examples of org.apache.openjpa.jdbc.sql.Joins

            field.getDefiningMapping(), store);


        // order first, then select so that if the projection introduces
        // additional ordering, it will be after our required ordering
        field.orderLocal(sel, elem, null);
        Joins joins = joinElementRelation(sel.newJoins(), elem);
        field.orderRelation(sel, elem, joins);
        selectElement(sel, elem, store, fetch, eagerMode, joins);
        return joins;
    }

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Examples of org.apache.openjpa.jdbc.sql.Joins

        sel.selectPrimaryKey(field.getDefiningMapping());
        // set a variable name that does not conflict with any in the query;
        // using a variable guarantees that the selected data will use different
        // aliases and joins than any existing WHERE conditions on this field
        // that might otherwise limit the relations that match
        Joins joins = sel.newJoins().setVariable("*");
        eagerJoin(joins, cls, true);
        sel.select(cls, field.getSelectSubclasses(), store, fetch, eagerMode, 
            joins);
    }

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Examples of org.apache.openjpa.jdbc.sql.Joins

        throws SQLException {
        // do same joins as for load
        //### cheat: we know typical result joins only care about the relation
        //### path; thus we can ignore different mappings
        ClassMapping[] clss = field.getIndependentTypeMappings();
        Joins joins = res.newJoins().setVariable("*");
        eagerJoin(joins, clss[0], true);


        Map rels = new HashMap();
        ClassMapping owner = field.getDefiningMapping();
        ClassMapping cls;

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Examples of org.apache.openjpa.jdbc.sql.Joins

        return 0;
    }


    public int select(Select sel, OpenJPAStateManager sm, JDBCStore store,
        JDBCFetchConfiguration fetch, int eagerMode) {
        Joins joins = field.join(sel);
        sel.select(field.getColumns(), joins); // null indicator


        // limit eager mode to join b/c at this point the select has been
        // modified and an attempt to clone it for a to-many eager select can
        // result in a clone that produces invalid SQL

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Examples of org.apache.openjpa.jdbc.sql.Joins

    public void setImplicitType(Class type) {
    }


    public ExpState initialize(Select sel, ExpContext ctx, int flags) {
        ExpState[] states = new ExpState[_args.length];
        Joins joins = null;
        for (int i = 0; i < _args.length; i++) {
            states[i] = _args[i].initialize(sel, ctx, flags);
            if (joins == null)
                joins = states[i].joins;
            else

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Examples of org.apache.openjpa.jdbc.sql.Joins

        if (havingExp != null)
            state.having = havingExp.initialize(sel, ctx, contains);


        // get the top-level joins and null the expression's joins
        // at the same time so they aren't included in the where/having SQL
        Joins filterJoins = state.filter.joins;
        Joins havingJoins = (state.having == null) ? null : state.having.joins;
        Joins joins = sel.and(filterJoins, havingJoins);


        // initialize result values
        if (exps.projections.length > 0) {
            state.projections = new ExpState[exps.projections.length];
            Val resultVal;

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