1 /*
2 * Copyright 2013 smartics, Kronseder & Reiner GmbH
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package de.smartics.properties.config.transfer.jdbc;
17
18 import org.slf4j.Logger;
19 import org.slf4j.LoggerFactory;
20
21 import de.smartics.properties.api.config.domain.PropertyLocation;
22 import de.smartics.properties.api.config.domain.PropertyProvider;
23 import de.smartics.properties.api.config.domain.key.ConfigurationKey;
24 import de.smartics.properties.api.config.transfer.PropertySink;
25 import de.smartics.properties.api.config.transfer.TransferException;
26 import de.smartics.properties.spi.config.ds.DataSourceException;
27 import de.smartics.properties.spi.config.ds.PropertiesStore;
28
29 /**
30 * Writes properties to a database via JDBC.
31 * <p>
32 * Properties are <strong>not</strong> stored within a transaction.
33 * </p>
34 */
35 public final class JdbcPropertySink implements PropertySink
36 {
37 // ********************************* Fields *********************************
38
39 // --- constants ------------------------------------------------------------
40
41 /**
42 * Reference to the logger for this class.
43 */
44 private static final Logger LOG = LoggerFactory
45 .getLogger(JdbcPropertySink.class);
46
47 // --- members --------------------------------------------------------------
48
49 /**
50 * The store of the properties.
51 */
52 private final PropertiesStore store;
53
54 // ****************************** Initializer *******************************
55
56 // ****************************** Constructors ******************************
57
58 /**
59 * Default constructor.
60 *
61 * @param store the store of the properties.
62 */
63 public JdbcPropertySink(final PropertiesStore store)
64 {
65 this.store = store;
66 }
67
68 // ****************************** Inner Classes *****************************
69
70 // ********************************* Methods ********************************
71
72 // --- init -----------------------------------------------------------------
73
74 // --- get&set --------------------------------------------------------------
75
76 // --- business -------------------------------------------------------------
77
78 @Override
79 public void clear() throws TransferException, DataSourceException
80 {
81 store.deleteProperties();
82 }
83
84 @Override
85 public void write(final PropertyProvider provider) throws TransferException
86 {
87 final PropertyLocation location = provider.getSourceId();
88 final ConfigurationKey<?> key = provider.getConfigurationKey();
89
90 LOG.info("Writing configuration '{}' properties: {}", key, location);
91 store.setProperties(provider);
92 }
93
94 @Override
95 public void write(final Iterable<PropertyProvider> providers)
96 throws TransferException
97 {
98 for (final PropertyProvider provider : providers)
99 {
100 write(provider);
101 }
102 }
103
104 /**
105 * {@inheritDoc}
106 * <p>
107 * This is a no-op.
108 * </p>
109 */
110 @Override
111 public void close() throws TransferException
112 {
113 }
114
115 // --- object basics --------------------------------------------------------
116
117 }