1 /**
2 * This file Copyright (c) 2018 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.ui.framework.ioc;
35
36
37 import info.magnolia.ui.framework.datasource.DatasourceComponent;
38 import info.magnolia.ui.framework.datasource.DatasourceSupport;
39 import info.magnolia.objectfactory.MgnlInstantiationException;
40 import info.magnolia.objectfactory.ParameterInfo;
41 import info.magnolia.objectfactory.ParameterResolver;
42
43 import java.util.stream.Stream;
44
45 /**
46 * Resolves c-tor dependencies annotated with {@link DatasourceComponent}. Uses {@link DatasourceSupport} and
47 * a DS definition to determine the corresponding {@link info.magnolia.ui.framework.datasource.DatasourceBundle DatasourceBundle}
48 * and delegates the actual look-up to it.
49 *
50 * In case no suitable bundle is found or it does not provide a required component - an {@link MgnlInstantiationException} is thrown.
51 */
52 public class DatasourceComponentParameterResolver implements ParameterResolver {
53
54 private final DatasourceSupport datasourceSupport;
55 private final Object datasourceDefinition;
56
57 DatasourceComponentParameterResolver(DatasourceSupport datasourceSupport, Object datasourceDefinition) {
58 this.datasourceSupport = datasourceSupport;
59 this.datasourceDefinition = datasourceDefinition;
60 }
61
62 @Override
63 public Object resolveParameter(ParameterInfo parameter) {
64 boolean isDatasourceComponent = Stream.of(parameter.getParameterAnnotations()).anyMatch(DatasourceComponent.class::isInstance);
65
66 if (!isDatasourceComponent) {
67 return UNRESOLVED;
68 }
69
70 return datasourceSupport
71 .getDatasourceBundle(datasourceDefinition)
72 .lookup(parameter.getParameterType(), datasourceDefinition)
73 .orElseThrow(() -> new MgnlInstantiationException(String.format("Failed to resolve a datasource component of type [%s] based on the data source definition of type [%s]",
74 parameter.getParameterType(),
75 datasourceDefinition == null ? "<not specified>" : datasourceDefinition.getClass().getName())));
76 }
77 }