Examples with DbRelationship org.apache.cayenne.map.DbRelationship used on opensource projects

Example 16 with DbRelationship

use of org.apache.cayenne.map.DbRelationship in project cayenne by apache.

the class EJBQLTranslationContext method getIncomingRelationships.

List<DbRelationship> getIncomingRelationships(EJBQLTableId id) {
    List<DbRelationship> incoming = compiledExpression.getIncomingRelationships(resolveId(id.getEntityId()));
    // append tail of flattened relationships...
    if (id.getDbPath() != null) {
        DbEntity entity;
        if (incoming == null || incoming.isEmpty()) {
            entity = compiledExpression.getEntityDescriptor(id.getEntityId()).getEntity().getDbEntity();
        } else {
            DbRelationship last = incoming.get(incoming.size() - 1);
            entity = last.getTargetEntity();
        }
        incoming = new ArrayList<>(incoming);
        Iterator<?> it = entity.resolvePathComponents(id.getDbPath());
        while (it.hasNext()) {
            incoming.add((DbRelationship) it.next());
        }
    }
    return incoming;
}

Example 17 with DbRelationship

use of org.apache.cayenne.map.DbRelationship in project cayenne by apache.

the class DropColumnToModelIT method testRemoveFKColumnWithoutRelationshipInDb.

@Test
public void testRemoveFKColumnWithoutRelationshipInDb() throws Exception {
    dropTableIfPresent("NEW_TABLE");
    dropTableIfPresent("NEW_TABLE2");
    assertTokensAndExecute(0, 0);
    DbEntity dbEntity1 = new DbEntity("NEW_TABLE");
    DbAttribute e1col1 = new DbAttribute("ID", Types.INTEGER, dbEntity1);
    e1col1.setMandatory(true);
    e1col1.setPrimaryKey(true);
    dbEntity1.addAttribute(e1col1);
    DbAttribute e1col2 = new DbAttribute("NAME", Types.VARCHAR, dbEntity1);
    e1col2.setMaxLength(10);
    e1col2.setMandatory(false);
    dbEntity1.addAttribute(e1col2);
    map.addDbEntity(dbEntity1);
    DbEntity dbEntity2 = new DbEntity("NEW_TABLE2");
    DbAttribute e2col1 = new DbAttribute("ID", Types.INTEGER, dbEntity2);
    e2col1.setMandatory(true);
    e2col1.setPrimaryKey(true);
    dbEntity2.addAttribute(e2col1);
    DbAttribute e2col2 = new DbAttribute("FK", Types.INTEGER, dbEntity2);
    dbEntity2.addAttribute(e2col2);
    DbAttribute e2col3 = new DbAttribute("NAME", Types.VARCHAR, dbEntity2);
    e2col3.setMaxLength(10);
    dbEntity2.addAttribute(e2col3);
    map.addDbEntity(dbEntity2);
    assertTokensAndExecute(2, 0);
    assertTokensAndExecute(0, 0);
    // force drop fk column in db
    execute(mergerFactory().createDropColumnToDb(dbEntity2, e2col2));
    // create db relationships, but do not sync them to db
    DbRelationship rel1To2 = new DbRelationship("rel1To2");
    rel1To2.setSourceEntity(dbEntity1);
    rel1To2.setTargetEntityName(dbEntity2);
    rel1To2.setToMany(true);
    rel1To2.addJoin(new DbJoin(rel1To2, e1col1.getName(), e2col2.getName()));
    dbEntity1.addRelationship(rel1To2);
    DbRelationship rel2To1 = new DbRelationship("rel2To1");
    rel2To1.setSourceEntity(dbEntity2);
    rel2To1.setTargetEntityName(dbEntity1);
    rel2To1.setToMany(false);
    rel2To1.addJoin(new DbJoin(rel2To1, e2col2.getName(), e1col1.getName()));
    dbEntity2.addRelationship(rel2To1);
    assertSame(rel1To2, rel2To1.getReverseRelationship());
    assertSame(rel2To1, rel1To2.getReverseRelationship());
    // create ObjEntities
    ObjEntity objEntity1 = new ObjEntity("NewTable");
    objEntity1.setDbEntity(dbEntity1);
    ObjAttribute oatr1 = new ObjAttribute("name");
    oatr1.setDbAttributePath(e1col2.getName());
    oatr1.setType("java.lang.String");
    objEntity1.addAttribute(oatr1);
    map.addObjEntity(objEntity1);
    ObjEntity objEntity2 = new ObjEntity("NewTable2");
    objEntity2.setDbEntity(dbEntity2);
    ObjAttribute o2a1 = new ObjAttribute("name");
    o2a1.setDbAttributePath(e2col3.getName());
    o2a1.setType("java.lang.String");
    objEntity2.addAttribute(o2a1);
    map.addObjEntity(objEntity2);
    // create ObjRelationships
    assertEquals(0, objEntity1.getRelationships().size());
    assertEquals(0, objEntity2.getRelationships().size());
    ObjRelationship objRel1To2 = new ObjRelationship("objRel1To2");
    objRel1To2.addDbRelationship(rel1To2);
    objRel1To2.setSourceEntity(objEntity1);
    objRel1To2.setTargetEntityName(objEntity2);
    objEntity1.addRelationship(objRel1To2);
    ObjRelationship objRel2To1 = new ObjRelationship("objRel2To1");
    objRel2To1.addDbRelationship(rel2To1);
    objRel2To1.setSourceEntity(objEntity2);
    objRel2To1.setTargetEntityName(objEntity1);
    objEntity2.addRelationship(objRel2To1);
    assertEquals(1, objEntity1.getRelationships().size());
    assertEquals(1, objEntity2.getRelationships().size());
    assertSame(objRel1To2, objRel2To1.getReverseRelationship());
    assertSame(objRel2To1, objRel1To2.getReverseRelationship());
    // try do use the merger to remove the column and relationship in the
    // model
    List<MergerToken> tokens = createMergeTokens();
    assertTokens(tokens, 2, 0);
    // TODO: reversing the following two tokens should also reverse the
    // order
    MergerToken token0 = tokens.get(0).createReverse(mergerFactory());
    MergerToken token1 = tokens.get(1).createReverse(mergerFactory());
    if (!(token0 instanceof DropRelationshipToModel && token1 instanceof DropColumnToModel || token1 instanceof DropRelationshipToModel && token0 instanceof DropColumnToModel)) {
        fail();
    }
    // do not execute DropRelationshipToModel, only DropColumnToModel.
    if (token1 instanceof DropColumnToModel) {
        execute(token1);
    } else {
        execute(token0);
    }
    // check after merging
    assertNull(dbEntity2.getAttribute(e2col2.getName()));
    assertEquals(0, dbEntity1.getRelationships().size());
    assertEquals(0, dbEntity2.getRelationships().size());
    assertEquals(0, objEntity1.getRelationships().size());
    assertEquals(0, objEntity2.getRelationships().size());
    // clear up
    dbEntity1.removeRelationship(rel1To2.getName());
    dbEntity2.removeRelationship(rel2To1.getName());
    map.removeObjEntity(objEntity1.getName(), true);
    map.removeDbEntity(dbEntity1.getName(), true);
    map.removeObjEntity(objEntity2.getName(), true);
    map.removeDbEntity(dbEntity2.getName(), true);
    resolver.refreshMappingCache();
    assertNull(map.getObjEntity(objEntity1.getName()));
    assertNull(map.getDbEntity(dbEntity1.getName()));
    assertNull(map.getObjEntity(objEntity2.getName()));
    assertNull(map.getDbEntity(dbEntity2.getName()));
    assertFalse(map.getDbEntities().contains(dbEntity1));
    assertFalse(map.getDbEntities().contains(dbEntity2));
    assertTokensAndExecute(2, 0);
    assertTokensAndExecute(0, 0);
}

Example 18 with DbRelationship

use of org.apache.cayenne.map.DbRelationship in project cayenne by apache.

the class DefaultObjectNameGeneratorTest method testRelationshipName_LowerCase_Underscores.

@Test
public void testRelationshipName_LowerCase_Underscores() {
    DbRelationship r1 = makeRelationship("painting", "artist_id", "artist", "artist_id", false);
    assertEquals("artist", generator.relationshipName(r1));
    DbRelationship r2 = makeRelationship("artist", "artist_id", "painting", "artist_id", true);
    assertEquals("paintings", generator.relationshipName(r2));
    DbRelationship r3 = makeRelationship("person", "mother_id", "person", "person_id", false);
    assertEquals("mother", generator.relationshipName(r3));
    DbRelationship r4 = makeRelationship("person", "person_id", "person", "mother_id", true);
    assertEquals("people", generator.relationshipName(r4));
    DbRelationship r5 = makeRelationship("person", "shipping_address_id", "address", "id", false);
    assertEquals("shippingAddress", generator.relationshipName(r5));
    DbRelationship r6 = makeRelationship("person", "id", "address", "person_id", true);
    assertEquals("addresses", generator.relationshipName(r6));
}

Example 19 with DbRelationship

use of org.apache.cayenne.map.DbRelationship in project cayenne by apache.

the class DefaultObjectNameGeneratorTest method testRelationshipName_UpperCase_Underscores.

@Test
public void testRelationshipName_UpperCase_Underscores() {
    DbRelationship r1 = makeRelationship("PAINTING", "ARTIST_ID", "ARTIST", "ARTIST_ID", false);
    assertEquals("artist", generator.relationshipName(r1));
    DbRelationship r2 = makeRelationship("ARTIST", "ARTIST_ID", "PAINTING", "ARTIST_ID", true);
    assertEquals("paintings", generator.relationshipName(r2));
    DbRelationship r3 = makeRelationship("PERSON", "MOTHER_ID", "PERSON", "PERSON_ID", false);
    assertEquals("mother", generator.relationshipName(r3));
    DbRelationship r4 = makeRelationship("PERSON", "PERSON_ID", "PERSON", "MOTHER_ID", true);
    assertEquals("people", generator.relationshipName(r4));
    DbRelationship r5 = makeRelationship("PERSON", "SHIPPING_ADDRESS_ID", "ADDRESS", "ID", false);
    assertEquals("shippingAddress", generator.relationshipName(r5));
    DbRelationship r6 = makeRelationship("PERSON", "ID", "ADDRESS", "PERSON_ID", true);
    assertEquals("addresses", generator.relationshipName(r6));
}

Example 20 with DbRelationship

use of org.apache.cayenne.map.DbRelationship in project cayenne by apache.

the class DropColumnToModel method execute.

@Override
public void execute(MergerContext mergerContext) {
    // remove relationships mapped to column. duplicate List to prevent
    // ConcurrentModificationException
    List<DbRelationship> dbRelationships = new ArrayList<>(getEntity().getRelationships());
    for (DbRelationship dbRelationship : dbRelationships) {
        for (DbJoin join : dbRelationship.getJoins()) {
            if (join.getSource() == getColumn() || join.getTarget() == getColumn()) {
                remove(mergerContext.getDelegate(), dbRelationship, true);
            }
        }
    }
    // remove ObjAttribute mapped to same column
    for (ObjEntity objEntity : getEntity().mappedObjEntities()) {
        ObjAttribute objAttribute = objEntity.getAttributeForDbAttribute(getColumn());
        if (objAttribute != null) {
            objEntity.removeAttribute(objAttribute.getName());
            mergerContext.getDelegate().objAttributeRemoved(objAttribute);
        }
    }
    // remove DbAttribute
    getEntity().removeAttribute(getColumn().getName());
    mergerContext.getDelegate().dbAttributeRemoved(getColumn());
}