antville/helma
antville/helma
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Moved db source handling from server to application level

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Added cache replication functionality
This commit is contained in:
hns 2001-04-06 17:47:04 +00:00
parent a336ab5955
commit 2cdb459c2d
1 changed files with 57 additions and 8 deletions
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65
src/helma/framework/core/Application.java
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@ -31,9 +31,9 @@ import java.util.StringTokenizer;
*/
public class Application extends UnicastRemoteObject implements IRemoteApp, Runnable {
SystemProperties props;
File home, appDir, dbDir;
private String name;
SystemProperties props, dbProps;
File home, appDir, dbDir;
protected NodeManager nmgr;
protected static WebServer xmlrpc;
protected XmlRpcAccess xmlrpcAccess;
@ -53,6 +53,7 @@ public class Application extends UnicastRemoteObject implements IRemoteApp, Runn
Hashtable sessions;
Hashtable activeUsers;
Hashtable dbMappings;
Hashtable dbSources;
Thread worker;
long requestTimeout = 60000; // 60 seconds for request timeout.
@ -83,7 +84,8 @@ public class Application extends UnicastRemoteObject implements IRemoteApp, Runn
super ();
}
public Application (String name, SystemProperties sysProps, File home) throws RemoteException, DbException, IllegalArgumentException {
public Application (String name, SystemProperties sysProps, SystemProperties sysDbProps, File home)
throws RemoteException, DbException, IllegalArgumentException {
if (name == null || name.trim().length() == 0)
throw new IllegalArgumentException ("Invalid application name: "+name);
@ -114,6 +116,9 @@ public class Application extends UnicastRemoteObject implements IRemoteApp, Runn
File propfile = new File (appDir, "app.properties");
props = new SystemProperties (propfile.getAbsolutePath (), sysProps);
File dbpropfile = new File (appDir, "db.properties");
dbProps = new SystemProperties (dbpropfile.getAbsolutePath (), sysDbProps);
File pwf = new File (home, "passwd");
CryptFile parentpwfile = new CryptFile (pwf, null);
pwf = new File (appDir, "passwd");
@ -134,6 +139,7 @@ public class Application extends UnicastRemoteObject implements IRemoteApp, Runn
sessions = new Hashtable ();
activeUsers = new Hashtable ();
dbMappings = new Hashtable ();
dbSources = new Hashtable ();
appnode = new Node ("app");
xmlrpc = IServer.getXmlRpcServer ();
@ -301,11 +307,14 @@ public class Application extends UnicastRemoteObject implements IRemoteApp, Runn
}
// get raw content from the database, circumventing the scripting framework.
// currently not used/supported.
public ResponseTrans get (String path, String sessionID) {
ResponseTrans res = null;
return res;
/**
* Update HopObjects in this application's cache. This is used to replicate
* application caches in a distributed app environment
*/
public void replicateCache (Vector add, Vector delete) {
if (!"true".equalsIgnoreCase (props.getProperty ("allowReplication")))
return;
nmgr.replicateCache (add, delete);
}
public void ping () {
@ -588,12 +597,52 @@ public class Application extends UnicastRemoteObject implements IRemoteApp, Runn
try {
DbMapping m = (DbMapping) e.nextElement ();
m.rewire ();
String typename = m.getTypeName ();
// set prototype hierarchy
if (!"hopobject".equalsIgnoreCase (typename) && !"global".equalsIgnoreCase (typename)) {
Prototype proto = (Prototype) typemgr.prototypes.get (typename);
if (proto != null) {
String protoname = m.getExtends ();
if (protoname == null)
protoname = "hopobject";
Prototype protoProto = (Prototype) typemgr.prototypes.get (protoname);
if (protoProto == null)
protoProto = (Prototype) typemgr.prototypes.get ("hopobject");
if (protoProto != null)
proto.setPrototype (protoProto);
}
}
} catch (Exception x) {
logEvent ("Error rewiring DbMappings: "+x);
}
}
}
/**
* Return a DbSource object for a given name. A DbSource is a relational database defined
* in a db.properties file.
*/
public DbSource getDbSource (String name) {
String dbSrcName = name.toLowerCase ();
DbSource dbs = (DbSource) dbSources.get (dbSrcName);
if (dbs != null)
return dbs;
if (dbProps.getProperty (dbSrcName+".url") != null && dbProps.getProperty (dbSrcName+".driver") != null) {
try {
dbs = new DbSource (name, dbProps);
dbSources.put (dbSrcName, dbs);
} catch (Exception problem) {
logEvent ("Error creating DbSource "+name);
logEvent ("Reason: "+problem);
}
}
return dbs;
}
/**
* Return the name of this application
*/
public String getName () {
return name;
}