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pretty much rewrote request path evaluation code.

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the global path object now also makes its elements accessible via
prototype name.
This commit is contained in:
hns 2001-07-19 14:59:24 +00:00
parent 9952f9b161
commit 9563372c51
1 changed files with 85 additions and 59 deletions
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136
src/helma/framework/core/RequestEvaluator.java
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@ -5,6 +5,7 @@ package helma.framework.core;
import java.util.Vector;
import java.util.Hashtable;
import java.util.Enumeration;
import java.util.StringTokenizer;
import java.io.*;
import helma.objectmodel.*;
@ -152,6 +153,13 @@ public class RequestEvaluator implements Runnable {
current = null;
currentNode = null;
reqPath.setSize (0);
// delete path objects-via-prototype
for (Enumeration en=reqPath.getAllProperties(); en.hasMoreElements(); ) {
String pn = (String) en.nextElement ();
if (!"length".equalsIgnoreCase (pn)) try {
reqPath.deleteProperty (pn, pn.hashCode ());
} catch (Exception ignore) {}
}
try {
@ -191,6 +199,7 @@ public class RequestEvaluator implements Runnable {
currentNode = root;
current = getNodeWrapper (root);
reqPath.putProperty (0, current);
reqPath.putHiddenProperty ("root", current);
Prototype p = app.getPrototype (root);
String errorAction = app.props.getProperty ("error", "error");
action = p.getActionOrTemplate (errorAction);
@ -199,6 +208,7 @@ public class RequestEvaluator implements Runnable {
currentNode = root;
current = getNodeWrapper (root);
reqPath.putProperty (0, current);
reqPath.putHiddenProperty ("root", current);
Prototype p = app.getPrototype (root);
action = p.getActionOrTemplate (null);
@ -208,76 +218,92 @@ public class RequestEvaluator implements Runnable {
// is the next path element a subnode or a property of the last one?
// currently only used for users node
boolean isProperty = false;
StringTokenizer st = new StringTokenizer (req.path, "/");
int ntokens = st.countTokens ();
String next = null;
// limit path to < 50 tokens
if (ntokens > 50)
throw new RuntimeException ("Path too long");
String[] pathItems = new String [ntokens];
for (int i=0; i<ntokens; i++)
pathItems[i] = st.nextToken ();
currentNode = root;
reqPath.putProperty (0, getNodeWrapper (currentNode));
current = getNodeWrapper (root);
reqPath.putProperty (0, current);
reqPath.putHiddenProperty ("root", current);
// the first token in the path needs to be treated seprerately,
// because "/user" is a shortcut to the current user session, while "/users"
// is the mounting point for all users.
if (ntokens > 1) {
next = st.nextToken ();
if ("user".equalsIgnoreCase (next)) {
currentNode = user.getNode ();
ntokens -=1;
if (currentNode != null)
reqPath.putProperty (1, getNodeWrapper (currentNode));
} else if ("users".equalsIgnoreCase (next)) {
currentNode = app.getUserRoot ();
ntokens -=1;
isProperty = true;
} else {
currentNode = currentNode.getSubnode (next);
ntokens -=1;
if (currentNode != null)
reqPath.putProperty (1, getNodeWrapper (currentNode));
}
}
for (int i=0; i<ntokens; i++) {
for (int i=1; i<ntokens; i++) {
if (currentNode == null)
throw new FrameworkException ("Object not found.");
next = st.nextToken ();
if (isProperty) // get next element as property
currentNode = currentNode.getNode (next, false);
else // get next element as subnode
currentNode = currentNode.getSubnode (next);
isProperty = false;
if (currentNode != null && currentNode.getState() != INode.VIRTUAL) // add to reqPath array
reqPath.putProperty (reqPath.size(), getNodeWrapper (currentNode));
// limit path to < 50 tokens
if (i > 50) throw new RuntimeException ("Path too deep");
// the first token in the path needs to be treated seprerately,
// because "/user" is a shortcut to the current user session, while "/users"
// is the mounting point for all users.
if (i == 0 && "user".equalsIgnoreCase (pathItems[i])) {
currentNode = user.getNode ();
if (currentNode != null) {
current = getNodeWrapper (currentNode);
reqPath.putProperty (1, current);
reqPath.putHiddenProperty ("user", current);
}
} else if (i == 0 && "users".equalsIgnoreCase (pathItems[i])) {
currentNode = app.getUserRoot ();
isProperty = true;
if (currentNode != null) {
current = getNodeWrapper (currentNode);
reqPath.putProperty (1, current);
}
} else {
if (i == ntokens-1) {
Prototype p = app.getPrototype (currentNode);
if (p != null)
action = p.getActionOrTemplate (pathItems[i]);
}
if (action == null) {
if (pathItems[i].length () == 0)
continue;
if (isProperty) // get next element as property
currentNode = currentNode.getNode (pathItems[i], false);
else // get next element as subnode
currentNode = currentNode.getSubnode (pathItems[i]);
isProperty = false;
// add object to request path if suitable
if (currentNode != null) {
String pt = currentNode.getPrototype ();
if (pt != null) {
// add to reqPath array
current = getNodeWrapper (currentNode);
reqPath.putProperty (reqPath.size(), current);
reqPath.putHiddenProperty (pt, current);
}
}
}
}
}
if (currentNode == null)
throw new FrameworkException ("Object not found.");
else
current = getNodeWrapper (currentNode);
Prototype p = app.getPrototype (currentNode);
next = st.nextToken ();
if (p != null)
action = p.getActionOrTemplate (next);
if (p == null || action == null) {
currentNode = currentNode.getSubnode (next);
if (currentNode == null)
throw new FrameworkException ("Object or Action '"+next+"' not found.");
p = app.getPrototype (currentNode);
// add to reqPath array
if (currentNode != null && currentNode.getState() != INode.VIRTUAL)
reqPath.putProperty (reqPath.size(), getNodeWrapper (currentNode));
if (action == null) {
Prototype p = app.getPrototype (currentNode);
if (p != null)
action = p.getActionOrTemplate ("main");
action = p.getActionOrTemplate (null);
}
current = getNodeWrapper (currentNode);
if (action == null)
throw new FrameworkException ("Action not found");
}
if (action == null)
throw new FrameworkException ("Action not found");
} catch (FrameworkException notfound) {
if (error != null)
// we already have an error and the error template wasn't found,
@ -606,7 +632,7 @@ public class RequestEvaluator implements Runnable {
this.method = functionName;
this.esargs = args;
this.res = new ResponseTrans ();
esresult = ESNull.theNull;
esresult = ESNull.theNull;
exception = null;
checkThread ();
@ -629,7 +655,7 @@ public class RequestEvaluator implements Runnable {
this.method = functionName;
this.esargs = args;
this.res = new ResponseTrans ();
esresult = ESNull.theNull;
esresult = ESNull.theNull;
exception = null;
checkThread ();