/* The contents of this file are subject to the license and copyright terms
* detailed in the license directory at the root of the source tree (also
* available online at http://fedora-commons.org/license/).
*/
package fedora.server.config;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
/**
*
*/
public class ServerConfigurationParser
extends DefaultHandler {
private SAXParser m_parser;
private final InputStream m_xmlStream;
private String m_serverClassName;
private List<Parameter> m_serverParameters;
private List<ModuleConfiguration> m_moduleConfigurations;
private List<DatastoreConfiguration> m_datastoreConfigurations;
private Parameter m_lastParam;
private String m_moduleOrDatastoreComment;
private String m_role;
private String m_class;
private String m_id;
private String m_paramName;
private String m_paramValue;
private String m_paramComment;
private boolean m_paramIsFilePath;
private Map<String, String> m_profileValues;
private List<Parameter> m_moduleOrDatastoreParameters; // module/datastore
private StringBuffer m_commentBuffer;
private boolean m_inParam;
private boolean m_inModuleOrDatastore;
public ServerConfigurationParser(InputStream xmlStream)
throws IOException {
m_xmlStream = xmlStream;
try {
SAXParserFactory spf = SAXParserFactory.newInstance();
spf.setNamespaceAware(true);
m_parser = spf.newSAXParser();
} catch (Exception e) {
e.printStackTrace();
throw new IOException("Error getting XML parser: " + e.getMessage());
}
}
public ServerConfiguration parse() throws IOException {
m_serverParameters = new ArrayList<Parameter>();
m_moduleConfigurations = new ArrayList<ModuleConfiguration>();
m_datastoreConfigurations = new ArrayList<DatastoreConfiguration>();
try {
m_parser.parse(m_xmlStream, this);
return new ServerConfiguration(m_serverClassName,
m_serverParameters,
m_moduleConfigurations,
m_datastoreConfigurations);
} catch (Exception e) {
e.printStackTrace();
throw new IOException("Error parsing XML: " + e.getMessage());
}
}
@Override
public void startElement(String uri,
String localName,
String qName,
Attributes a) throws SAXException {
if (localName.equals("server")) {
m_serverClassName = a.getValue("class");
} else if (localName.equals("module")) {
m_inModuleOrDatastore = true;
m_moduleOrDatastoreParameters = new ArrayList<Parameter>();
m_role = a.getValue("role");
m_class = a.getValue("class");
} else if (localName.equals("datastore")) {
m_inModuleOrDatastore = true;
m_moduleOrDatastoreParameters = new ArrayList<Parameter>();
m_id = a.getValue("id");
} else if (localName.equals("comment")) {
m_commentBuffer = new StringBuffer();
} else if (localName.equals("param")) {
m_inParam = true;
m_paramName = a.getValue("name");
m_paramValue = a.getValue("value");
String isFilePath = a.getValue("isFilePath");
m_paramIsFilePath =
isFilePath != null && isFilePath.equalsIgnoreCase("true");
m_paramComment = null;
m_profileValues = new HashMap<String, String>();
for (int i = 0; i < a.getLength(); i++) {
String name = a.getLocalName(i);
if (name.length() > 5 && name.endsWith("value")) {
String value = a.getValue(i);
m_profileValues.put(name.substring(0, name.length() - 5),
value);
}
}
}
}
@Override
public void endElement(String uri, String localName, String qName)
throws SAXException {
if (localName.equals("module")) {
// add a new ModuleConfiguration to m_moduleConfigurations
m_inModuleOrDatastore = false;
m_moduleConfigurations
.add(new ModuleConfiguration(m_moduleOrDatastoreParameters,
m_role,
m_class,
m_moduleOrDatastoreComment));
} else if (localName.equals("datastore")) {
// add a new DatastoreConfiguration to m_datastoreConfigurations
m_inModuleOrDatastore = false;
m_datastoreConfigurations
.add(new DatastoreConfiguration(m_moduleOrDatastoreParameters,
m_id,
m_moduleOrDatastoreComment));
} else if (localName.equals("comment")) {
// figure out what kind of thing this is a comment for
// if we're in a param, it's for the param.
if (m_inParam) {
m_paramComment = m_commentBuffer.toString();
} else if (m_inModuleOrDatastore) {
m_moduleOrDatastoreComment = m_commentBuffer.toString();
} else {
// the old style was to have a comment after (not inside) a param
if (m_lastParam != null) {
m_lastParam.setComment(m_commentBuffer.toString());
}
}
} else if (localName.equals("param")) {
m_inParam = false;
m_lastParam =
new Parameter(m_paramName,
m_paramValue,
m_paramIsFilePath,
m_paramComment,
m_profileValues);
if (m_inModuleOrDatastore) {
m_moduleOrDatastoreParameters.add(m_lastParam);
} else {
m_serverParameters.add(m_lastParam);
}
}
}
@Override
public void characters(char[] ch, int start, int length) {
if (m_commentBuffer != null) {
m_commentBuffer.append(ch, start, length);
}
}
}