org.fabric3.datasource.introspection.DataSourceResourceLoader Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of fabric3-datasource Show documentation
Show all versions of fabric3-datasource Show documentation
Support for configuring, deploying, and accessing datasources
The newest version!
/*
* Fabric3
* Copyright (c) 2009-2013 Metaform Systems
*
* Fabric3 is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version, with the
* following exception:
*
* Linking this software statically or dynamically with other
* modules is making a combined work based on this software.
* Thus, the terms and conditions of the GNU General Public
* License cover the whole combination.
*
* As a special exception, the copyright holders of this software
* give you permission to link this software with independent
* modules to produce an executable, regardless of the license
* terms of these independent modules, and to copy and distribute
* the resulting executable under terms of your choice, provided
* that you also meet, for each linked independent module, the
* terms and conditions of the license of that module. An
* independent module is a module which is not derived from or
* based on this software. If you modify this software, you may
* extend this exception to your version of the software, but
* you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version.
*
* Fabric3 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the
* GNU General Public License along with Fabric3.
* If not, see
* <datasources>
* <datasource name="test" driver="foo.Bar" type="xa" url="jdbc:test">
* <username>user<username>
* <password>pass<password>
* </datasource>
* </datasources>
*
*/
@EagerInit
public class DataSourceResourceLoader implements TypeLoader {
public DataSourceResource load(XMLStreamReader reader, IntrospectionContext context) throws XMLStreamException {
List configurations = new ArrayList();
DataSourceConfiguration configuration = null;
while (true) {
switch (reader.next()) {
case XMLStreamConstants.START_ELEMENT:
Location location = reader.getLocation();
if ("datasource".equals(reader.getName().getLocalPart())) {
String name = readMandatoryAttribute("name", reader, context);
DataSourceType dataSourceType;
String type = reader.getAttributeValue(null, "type");
if (type == null) {
dataSourceType = DataSourceType.NON_XA;
} else {
try {
dataSourceType = DataSourceType.valueOf(type.toUpperCase());
} catch (IllegalArgumentException e) {
InvalidValue error = new InvalidValue("Datasource type must be either xa or non_xa", location, e);
context.addError(error);
dataSourceType = DataSourceType.NON_XA;
}
}
String driver = readMandatoryAttribute("driver", reader, context);
configuration = new DataSourceConfiguration(name, driver, dataSourceType);
List aliases = readAliases(reader);
configuration.setAliases(aliases);
String url = reader.getAttributeValue(null, "url");
configuration.setUrl(url);
String username = reader.getAttributeValue(null, "username");
configuration.setUsername(username);
String password = reader.getAttributeValue(null, "password");
configuration.setPassword(password);
} else {
// check to ensure the element comes before a property or other element
if (configuration != null) {
// read property
String name = reader.getName().getLocalPart();
String value = reader.getElementText();
if ("maxPoolSize".equals(name)) {
configuration.setMaxPoolSize(parseInt(value, location, context));
} else if ("minPoolSize".equals(name)) {
configuration.setMinPoolSize(parseInt(value, location, context));
} else if ("connectionTimeout".equals(name)) {
configuration.setConnectionTimeout(parseInt(value, location, context));
} else if ("loginTimeout".equals(name)) {
configuration.setLoginTimeout(parseInt(value, location, context));
} else if ("maintenanceInterval".equals(name)) {
configuration.setMaintenanceInterval(parseInt(value, location, context));
} else if ("maxIdle".equals(name)) {
configuration.setMaxIdle(parseInt(value, location, context));
} else if ("poolSize".equals(name)) {
configuration.setPoolSize(parseInt(value, location, context));
} else if ("reap".equals(name)) {
configuration.setReap(parseInt(value, location, context));
} else if ("query".equals(name)) {
configuration.setQuery(value);
} else {
configuration.setProperty(name, value);
}
}
}
break;
case XMLStreamConstants.END_ELEMENT:
if ("datasource".equals(reader.getName().getLocalPart())) {
configurations.add(configuration);
break;
}
if ("datasources".equals(reader.getName().getLocalPart())) {
return new DataSourceResource(configurations);
}
}
}
}
private List readAliases(XMLStreamReader reader) {
String aliasesAttr = reader.getAttributeValue(null, "aliases");
if (aliasesAttr == null) {
return Collections.emptyList();
} else {
return Arrays.asList(aliasesAttr.split(","));
}
}
private String readMandatoryAttribute(String name, XMLStreamReader reader, IntrospectionContext context) {
String val = reader.getAttributeValue(null, name);
if (val == null) {
InvalidValue error = new InvalidValue("Datasource " + name + " must be specified", reader.getLocation());
context.addError(error);
}
return val;
}
private int parseInt(String value, Location location, IntrospectionContext context) {
try {
return Integer.parseInt(value);
} catch (NumberFormatException e) {
context.addError(new InvalidValue("Invalid value", location, e));
return 0;
}
}
}