Examples of org.apache.cayenne.map.DbRelationship$TestJoin

org.apache.cayenne.map.DbRelationship
A DbRelationship is a descriptor of a database inter-table relationship based on one or more primary key/foreign key pairs. @author Misha Shengaout @author Andrus Adamchik

        if (getParent() != null
                && !getParent().isPhantom()
                && getIncoming() != null
                && !getIncoming().getRelationship().isFlattened()) {


            DbRelationship r = getIncoming()
                    .getRelationship()
                    .getDbRelationships()
                    .get(0);
            for (final DbJoin join : r.getJoins()) {
                appendColumn(targetSource, join.getTargetName(), prefix
                        + join.getTargetName());
            }
        }


        ClassDescriptor descriptor = resolver.getDescriptor();


        descriptor.visitAllProperties(new PropertyVisitor() {


            public boolean visitAttribute(AttributeProperty property) {
                String target = property.getAttribute().getDbAttributePath();
                appendColumn(targetSource, target, prefix + target);
                return true;
            }


            public boolean visitToMany(ToManyProperty property) {
                return visitRelationship(property);
            }


            public boolean visitToOne(ToOneProperty property) {
                return visitRelationship(property);
            }


            private boolean visitRelationship(ArcProperty arc) {
                DbRelationship dbRel = arc.getRelationship().getDbRelationships().get(0);
                for (DbAttribute attribute : dbRel.getSourceAttributes()) {
                    String target = attribute.getName();


                    appendColumn(targetSource, target, prefix + target);
                }
                return true;

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                return !DONE;
            }


            // we can assume that there is one and only one DbRelationship as
            // we previously checked that "!isSourceIndependentFromTargetChange"
            DbRelationship dbRelationship = relationship.getDbRelationships().get(0);


            ObjectId targetId = sourceRow.createTargetObjectId(relationship
                    .getTargetEntityName(), dbRelationship);


            // null id means that FK is null...

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            throw new CayenneRuntimeException(
                    "Only single-step flattened relationships are supported in this operation: "
                            + relationship);
        }


        DbRelationship firstDbRel = relList.get(0);
        return (DbEntity) firstDbRel.getTargetEntity();
    }

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            throw new CayenneRuntimeException(
                    "Only single-step flattened relationships are supported in this operation: "
                            + relationship);
        }


        DbRelationship firstDbRel = relList.get(0);
        DbRelationship secondDbRel = relList.get(1);


        Map<String, ?> sourceId = this.sourceId.getIdSnapshot();
        Map<String, ?> destinationId = this.destinationId.getIdSnapshot();


        Map<String, Object> snapshot = new HashMap<String, Object>(sourceId.size()
                + destinationId.size(), 1);
        for (DbJoin join : firstDbRel.getJoins()) {
            snapshot.put(join.getTargetName(), sourceId.get(join.getSourceName()));
        }


        for (DbJoin join : secondDbRel.getJoins()) {
            snapshot.put(join.getSourceName(), destinationId.get(join.getTargetName()));
        }


        return snapshot;
    }

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            throw new CayenneRuntimeException(
                    "Only single-step flattened relationships are supported in this operation: "
                            + relationship);
        }


        DbRelationship firstDbRel = relList.get(0);
        DbRelationship secondDbRel = relList.get(1);


        List<DbJoin> fromSourceJoins = firstDbRel.getJoins();
        List<DbJoin> toTargetJoins = secondDbRel.getJoins();


        Map<String, Object> snapshot = new HashMap<String, Object>(fromSourceJoins.size()
                + toTargetJoins.size(), 1);


        for (int i = 0, numJoins = fromSourceJoins.size(); i < numJoins; i++) {

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            }


            // if db relationship is not based on a PK and is based on mandatory
            // attributes, see if we have a target object set
            boolean validate = true;
            DbRelationship dbRelationship = dbRels.get(0);
            for (DbJoin join : dbRelationship.getJoins()) {
                DbAttribute source = join.getSource();


                if (source.isMandatory()) {
                    // clear attribute failures...
                    if (failedDbAttributes != null && !failedDbAttributes.isEmpty()) {

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        // if FK constraints are supported, we must add indices to all FKs
        // Note that according to MySQL docs, FK indexes are created automatically when
        // constraint is defined, starting at MySQL 4.1.2
        if (supportsFkConstraints) {
            for (Relationship r : entity.getRelationships()) {
                DbRelationship relationship = (DbRelationship) r;
                if (relationship.getJoins().size() > 0
                        && relationship.isToPK()
                        && !relationship.isToDependentPK()) {


                    sqlBuffer.append(", KEY (");


                    Iterator<DbAttribute> columns = relationship
                            .getSourceAttributes()
                            .iterator();
                    DbAttribute column = columns.next();
                    sqlBuffer.append(context.quoteString(column.getName()));

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        ClassDescriptor descriptor = resolver.getClassDescriptor(objEntity.getName());


        List<DbRelationship> reflexiveRels = reflexiveDbEntities.get(dbEntity);
        String[] reflexiveRelNames = new String[reflexiveRels.size()];
        for (int i = 0; i < reflexiveRelNames.length; i++) {
            DbRelationship dbRel = reflexiveRels.get(i);
            ObjRelationship objRel = (dbRel != null ? objEntity
                    .getRelationshipForDbRelationship(dbRel) : null);
            reflexiveRelNames[i] = (objRel != null ? objRel.getName() : null);
        }

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    protected Object findReflexiveMaster(
            Persistent object,
            ObjRelationship toOneRel,
            String targetEntityName) {


        DbRelationship finalRel = toOneRel.getDbRelationships().get(0);
        ObjectContext context = object.getObjectContext();


        // find committed snapshot - so we can't fetch from the context as it will return
        // dirty snapshot; must go down the stack instead

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                return true;
            }


            public boolean visitToOne(ToOneProperty property) {
                ObjRelationship rel = property.getRelationship();
                DbRelationship dbRel = rel.getDbRelationships().get(0);


                for (DbJoin join : dbRel.getJoins()) {
                    DbAttribute src = join.getSource();
                    if (src.isForeignKey() && visited.add(src.getName())) {
                        entityResult.addDbField(src.getName(), prefix + index[0]++);
                    }
                }

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