[monasca-common] Hibernate support added

- refactored code to match java guidelines
- added missed indexes
- fixed invalid string lengths according to latest mon.sql from ansible-monasca-schema
- introduced relations
- using ordinal for enum fields

Change-Id: Ic84bf542c10ff714885c7a53bb9cbe3a2fb728cd

java/monasca-common-hibernate/src/main/java/monasca/common/hibernate/configuration/HibernateDbConfiguration.java

@@ -0,0 +1,114 @@
+/*
+ * Copyright 2015 FUJITSU LIMITED
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ *
+ */
+package monasca.common.hibernate.configuration;
+
+import javax.validation.constraints.NotNull;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import org.hibernate.validator.constraints.NotEmpty;
+
+public class HibernateDbConfiguration {
+  private static final String DEFAULT_HBM2DDL_AUTO_VALUE = "validate";
+
+  @NotNull
+  @JsonProperty
+  boolean supportEnabled;
+  @NotEmpty
+  @JsonProperty
+  String providerClass;
+  @NotEmpty
+  @JsonProperty
+  String dataSourceClassName;
+  @NotEmpty
+  @JsonProperty
+  String user;
+  @NotEmpty
+  @JsonProperty
+  String password;
+
+  @JsonProperty
+  String initialConnections;
+  @JsonProperty
+  String maxConnections;
+  @JsonProperty
+  String autoConfig;
+  @JsonProperty
+  String dataSourceUrl;
+  @JsonProperty
+  String serverName;
+  @JsonProperty
+  String portNumber;
+  @JsonProperty
+  String databaseName;
+
+  public String getDataSourceUrl() {
+    return this.dataSourceUrl;
+  }
+
+  public boolean getSupportEnabled() {
+    return supportEnabled;
+  }
+
+  public String getProviderClass() {
+    return providerClass;
+  }
+
+  public void setProviderClass(String providerClass) {
+    this.providerClass = providerClass;
+  }
+
+  public String getDataSourceClassName() {
+    return dataSourceClassName;
+  }
+
+  public String getServerName() {
+    return serverName;
+  }
+
+  public String getPortNumber() {
+    return portNumber;
+  }
+
+  public String getDatabaseName() {
+    return databaseName;
+  }
+
+  public String getUser() {
+    return user;
+  }
+
+  public String getPassword() {
+    return password;
+  }
+
+  public String getInitialConnections() {
+    return initialConnections;
+  }
+
+  public String getMaxConnections() {
+    return maxConnections;
+  }
+
+  /**
+   * Returns {@code hbm2ddl.auto} telling hibernate how to handle schema. By default will return {@code validate}.
+   * For more information how each of the possible value works refer to official Hibernate documentation.
+   *
+   * @return {@link String} hbm2ddl.auto value
+   * @see <a href="https://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch03.html#configuration-optional">3.7. Miscellaneous Properties</a>
+   */
+  public String getAutoConfig() {
+    return this.autoConfig == null ? DEFAULT_HBM2DDL_AUTO_VALUE : this.autoConfig;
+  }
+}