antville/helma
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Implemented groupby support in automatic getParent lookup.

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Also, the result is now cached which should increase performance.
This commit is contained in:
hns 2001-03-07 19:28:33 +00:00
parent 27d07e599c
commit 293c4e013a
2 changed files with 19 additions and 3 deletions
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3
src/helma/objectmodel/DbMapping.java
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@ -322,6 +322,9 @@ public class DbMapping implements Updatable {
return rel != null ? rel : propertiesRel;
}
public String getSubnodeGroupby () {
return subnodesRel == null ? null : subnodesRel.groupby;
}
public String getIDgen () {
return idgen;

19
src/helma/objectmodel/db/Node.java
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@ -102,6 +102,8 @@ public class Node implements INode, Serializable {
transient long lastSubnodeFetch = 0;
transient long lastSubnodeChange = 0;
transient long lastParentSet = 0;
transient long lastSubnodeCount = 0; // these two are only used
transient int subnodeCount = -1; // for aggressive loading relational subnodes
@ -142,6 +144,7 @@ public class Node implements INode, Serializable {
name = nameField == null ? id : rec.getValue (nameField).asString ();
if (name == null || name.length() == 0)
name = id;
created = lastmodified = System.currentTimeMillis ();
setPrototype (dbmap.getTypeName ());
for (Enumeration e=dbmap.db2prop.elements (); e.hasMoreElements(); ) {
@ -594,7 +597,7 @@ public class Node implements INode, Serializable {
// check what's specified in the type.properties for this node.
ParentInfo[] parentInfo = null;
if (dbmap != null && dbmap.isRelational ())
if (dbmap != null && dbmap.isRelational () && lastParentSet < Math.max (dbmap.getLastTypeChange(), lastmodified))
parentInfo = dbmap.getParentInfo ();
// check if current parent candidate matches presciption, if not, try to get it
@ -609,9 +612,19 @@ public class Node implements INode, Serializable {
anonymous = !pinfo.named;
if (pinfo.virtualname != null)
pn = pn.getNode (pinfo.virtualname, false);
// FIXME: check for groupby
if (pn != null)
DbMapping dbm = pn == null ? null : pn.getDbMapping ();
if (dbm != null && dbm.getSubnodeGroupby () != null) {
// check for groupby
try {
Relation rel = (Relation) dbmap.db2prop.get (dbm.getSubnodeGroupby());
pn = pn.getSubnode (getString (rel.propname, false));
} catch (Exception ignore) {}
}
if (pn != null) {
setParent ((Node) pn);
lastParentSet = System.currentTimeMillis ();
return pn;
}
}
}
}