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* Copyright (c) Ericsson AB, 2004-2008. All rights reserved.
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package com.ericsson.ssa.config;
import com.sun.enterprise.web.session.PersistenceType;
import com.sun.enterprise.ee.web.sessmgmt.EEPersistenceTypeResolver;
import java.util.logging.Level;
import org.jvnet.glassfish.comms.util.LogUtil;
import java.util.logging.Logger;
public class SipPersistenceStrategyBuilderFactory {
private static String sipReplicationBuilderPkg = null;
private static final Logger logger = LogUtil.SIP_LOGGER.getLogger();
static {
try {
sipReplicationBuilderPkg = Class.forName(
"org.jvnet.glassfish.comms.replication.initialization.ReplicatedSipTransactionModifiedSessionStrategyBuilder")
.getPackage().getName();
} catch (ClassNotFoundException cnfe) {
throw new ExceptionInInitializerError(cnfe);
}
}
private EEPersistenceTypeResolver persistenceTypeResolver;
/**
* Constructor.
*/
public SipPersistenceStrategyBuilderFactory() {
persistenceTypeResolver = new EEPersistenceTypeResolver();
}
/**
* Creates and returns the appropriate implementation of a
* PersistenceStrategyBuilder.
*
* @param type Persistence type
* @param frequency Persistence frequency
* @param scope Persistence scope
* @param ctxt
*/
SipPersistenceStrategyBuilder createPersistenceStrategyBuilder(
String persistenceType, String frequency, String scope,
ConvergedContext ctxt) {
String resolvedPersistenceFrequency = null;
String resolvedPersistenceScope = null;
String resolvedPersistenceType =
persistenceTypeResolver.resolvePersistenceType(persistenceType);
if (!resolvedPersistenceType.equalsIgnoreCase("memory")) {
resolvedPersistenceFrequency = frequency;
resolvedPersistenceScope = scope;
}
SipPersistenceStrategyBuilder builder = new MemoryStrategyBuilder();
String className = createBuilderClassNameFrom(
resolvedPersistenceType, resolvedPersistenceFrequency,
resolvedPersistenceScope);
try {
builder = (SipPersistenceStrategyBuilder) Class.forName(className)
.newInstance();
} catch (Exception ex) {
// Log warning that we are falling back to memory
logger.log(Level.WARNING, "sipstack.invalidSessionManagerConfig",
new Object[] { ((ConvergedContextImpl) ctxt).getID(), persistenceType,
frequency, scope });
}
builder.setPassedInPersistenceType(persistenceType);
return builder;
}
/**
* Determines an appropriately camel-cased string that is a candidate
* class name for a builder.
*
* @param type Persistence type
* @param frequency Persistence frequency
* @param scope Persistence scope
*
* @return The class name of the builder
*/
private String createBuilderClassNameFrom(String type, String frequency,
String scope) {
StringBuilder sb = new StringBuilder();
String pkg = sipReplicationBuilderPkg;
if ("memory".equalsIgnoreCase(type)) {
pkg = getClass().getPackage().getName();
}
sb.append(pkg + ".");
sb.append(camelCase(type));
if (frequency != null) {
sb.append(camelCase(frequency));
}
if (scope != null) {
sb.append(camelCase(scope));
}
sb.append("StrategyBuilder");
return sb.toString();
}
/**
* Strips out all non-alpha characters from the given input string, and
* camelCases the result.
*
* @param s The input string
*
* @return The camelCased result
*/
private String camelCase(String s) {
boolean toUpper = true;
StringBuilder sb = new StringBuilder();
for (int i = 0; i < s.length(); i++) {
char nextChar = s.charAt(i);
if (toUpper) {
nextChar = Character.toUpperCase(nextChar);
toUpper = false;
}
if (Character.isLetter(nextChar)) {
sb.append(nextChar);
} else {
toUpper = true;
}
}
return sb.toString();
}
}