Examples with CayenneMapEntry org.apache.cayenne.util.CayenneMapEntry used on opensource projects

Example 21 with CayenneMapEntry

use of org.apache.cayenne.util.CayenneMapEntry in project cayenne by apache.

the class ObjAttributeInfoDialog method setSelectionPath.

/**
 * Selects path in browser
 */
public void setSelectionPath() {
    List<CayenneMapEntry> list = new ArrayList<>();
    boolean isAttributeLast = false;
    Iterator<CayenneMapEntry> it = attribute.getDbPathIterator();
    while (it.hasNext()) {
        CayenneMapEntry obj = it.next();
        list.add(obj);
        if (obj instanceof DbAttribute && !it.hasNext()) {
            isAttributeLast = true;
        }
    }
    if (isAttributeLast) {
        Object[] path = new Object[list.size() + 1];
        path[0] = getFirstEntity();
        System.arraycopy(list.toArray(), 0, path, 1, list.size());
        view.getPathBrowser().setSelectionPath(new TreePath(path));
        view.getSaveButton().setEnabled(true);
    }
}

Example 22 with CayenneMapEntry

use of org.apache.cayenne.util.CayenneMapEntry in project cayenne by apache.

the class ObjAttributeInfoDialog method getFirstEntity.

private Entity getFirstEntity() {
    Iterator<CayenneMapEntry> it = attribute.getDbPathIterator();
    Entity firstEnt = attribute.getDbAttribute().getEntity();
    boolean setEnt = false;
    while (it.hasNext()) {
        Object ob = it.next();
        if (ob instanceof DbRelationship) {
            if (!setEnt) {
                firstEnt = ((DbRelationship) ob).getSourceEntity();
                setEnt = true;
            }
        } else if (ob instanceof DbAttribute) {
            if (!setEnt) {
                firstEnt = ((DbAttribute) ob).getEntity();
            }
        }
    }
    return firstEnt;
}

Example 23 with CayenneMapEntry

use of org.apache.cayenne.util.CayenneMapEntry in project cayenne by apache.

the class SelectQueryMetadata method buildEntityResultForColumn.

/**
 * Collect metadata for column that will be unwrapped to full entity in the final SQL
 * (possibly including joint prefetch).
 * This information will be used to correctly create Persistent object back from raw result.
 *
 * This method is actually repeating logic of
 * {@link org.apache.cayenne.access.translator.select.DefaultSelectTranslator#appendQueryColumns}.
 * Here we don't care about intermediate joins and few other things so it's shorter.
 * Logic of these methods should be unified and simplified, possibly to a single source of metadata,
 * generated only once and used everywhere.
 *
 * @param query original query
 * @param column full object column
 * @param resolver entity resolver to get ObjEntity and ClassDescriptor
 * @return Entity result
 */
private EntityResult buildEntityResultForColumn(SelectQuery<?> query, Property<?> column, EntityResolver resolver) {
    final EntityResult result = new EntityResult(column.getType());
    // Collecting visitor for ObjAttributes and toOne relationships
    PropertyVisitor visitor = new PropertyVisitor() {

        public boolean visitAttribute(AttributeProperty property) {
            ObjAttribute oa = property.getAttribute();
            Iterator<CayenneMapEntry> dbPathIterator = oa.getDbPathIterator();
            while (dbPathIterator.hasNext()) {
                CayenneMapEntry pathPart = dbPathIterator.next();
                if (pathPart instanceof DbAttribute) {
                    result.addDbField(pathPart.getName(), pathPart.getName());
                }
            }
            return true;
        }

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

        public boolean visitToOne(ToOneProperty property) {
            DbRelationship dbRel = property.getRelationship().getDbRelationships().get(0);
            List<DbJoin> joins = dbRel.getJoins();
            for (DbJoin join : joins) {
                if (!join.getSource().isPrimaryKey()) {
                    result.addDbField(join.getSource().getName(), join.getSource().getName());
                }
            }
            return true;
        }
    };
    ObjEntity oe = resolver.getObjEntity(column.getType());
    DbEntity table = oe.getDbEntity();
    // Additionally collect PKs
    for (DbAttribute dba : table.getPrimaryKeys()) {
        result.addDbField(dba.getName(), dba.getName());
    }
    ClassDescriptor descriptor = resolver.getClassDescriptor(oe.getName());
    descriptor.visitAllProperties(visitor);
    // Collection columns for joint prefetch
    if (query.getPrefetchTree() != null) {
        for (PrefetchTreeNode prefetch : query.getPrefetchTree().adjacentJointNodes()) {
            // for each prefetch add columns from the target entity
            Expression prefetchExp = ExpressionFactory.exp(prefetch.getPath());
            ASTDbPath dbPrefetch = (ASTDbPath) oe.translateToDbPath(prefetchExp);
            DbRelationship r = findRelationByPath(table, dbPrefetch);
            if (r == null) {
                throw new CayenneRuntimeException("Invalid joint prefetch '%s' for entity: %s", prefetch, oe.getName());
            }
            // go via target OE to make sure that Java types are mapped correctly...
            ObjRelationship targetRel = (ObjRelationship) prefetchExp.evaluate(oe);
            ObjEntity targetEntity = targetRel.getTargetEntity();
            prefetch.setEntityName(targetRel.getSourceEntity().getName());
            String labelPrefix = dbPrefetch.getPath();
            Set<String> seenNames = new HashSet<>();
            for (ObjAttribute oa : targetEntity.getAttributes()) {
                Iterator<CayenneMapEntry> dbPathIterator = oa.getDbPathIterator();
                while (dbPathIterator.hasNext()) {
                    Object pathPart = dbPathIterator.next();
                    if (pathPart instanceof DbAttribute) {
                        DbAttribute attribute = (DbAttribute) pathPart;
                        if (seenNames.add(attribute.getName())) {
                            result.addDbField(labelPrefix + '.' + attribute.getName(), labelPrefix + '.' + attribute.getName());
                        }
                    }
                }
            }
            // append remaining target attributes such as keys
            DbEntity targetDbEntity = r.getTargetEntity();
            for (DbAttribute attribute : targetDbEntity.getAttributes()) {
                if (seenNames.add(attribute.getName())) {
                    result.addDbField(labelPrefix + '.' + attribute.getName(), labelPrefix + '.' + attribute.getName());
                }
            }
        }
    }
    return result;
}

Example 24 with CayenneMapEntry

use of org.apache.cayenne.util.CayenneMapEntry in project cayenne by apache.

the class ASTPath method evaluateEntityNode.

/**
 * Helper method to evaluate path expression with Cayenne Entity.
 */
protected CayenneMapEntry evaluateEntityNode(Entity entity) {
    Iterator<CayenneMapEntry> path = entity.resolvePathComponents(this);
    CayenneMapEntry next = null;
    while (path.hasNext()) {
        next = path.next();
    }
    return next;
}