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Made subnode check optional in NodeManager.getNode()

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Switched from Vector to ArrayList as base class for ExternalizableVector.
Binary representations of both versions of ExternalizableVector should still be
compatible.
This commit is contained in:
hns 2001-07-16 15:30:40 +00:00
parent a974b77f62
commit 58c92aec46
4 changed files with 51 additions and 47 deletions
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8
src/helma/objectmodel/db/ExternalizableVector.java
View file

@ -4,14 +4,14 @@
package helma.objectmodel.db;
import java.io.*;
import java.util.Vector;
import java.util.ArrayList;
/**
* A subclass of Vector that implements the Externalizable interface in order
* to be able to control how it is serialized and deserialized.
*/
public class ExternalizableVector extends Vector implements Externalizable {
public class ExternalizableVector extends ArrayList implements Externalizable {
static final long serialVersionUID = 2316243615310540423L;
@ -19,7 +19,7 @@ public class ExternalizableVector extends Vector implements Externalizable {
try {
int size = in.readInt ();
for (int i=0; i<size; i++)
addElement (in.readObject ());
add (in.readObject ());
} catch (ClassNotFoundException x) {
throw new IOException (x.toString ());
}
@ -29,7 +29,7 @@ public class ExternalizableVector extends Vector implements Externalizable {
int size = size ();
out.writeInt (size);
for (int i=0; i<size; i++)
out.writeObject (elementAt (i));
out.writeObject (get (i));
}
}

64
src/helma/objectmodel/db/Node.java
View file

@ -7,7 +7,9 @@ package helma.objectmodel.db;
import java.util.Vector;
import java.util.Hashtable;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.Date;
import java.util.List;
import java.util.StringTokenizer;
import java.io.*;
import java.sql.Types;
@ -26,13 +28,13 @@ public class Node implements INode, Serializable {
// The ID of this node's parent node
protected String parentID;
// Ordered list of subnodes of this node
private Vector subnodes;
private List subnodes;
// Named subnodes (properties) of this node
private Hashtable propMap;
// Other nodes that link to this node. Used for reference counting/checking
private Vector links;
private List links;
// Other nodes that refer to this node as property. Used for reference counting/checking
private Vector proplinks;
private List proplinks;
// the name of the (Hop) prototype - this is stored as standard property instead.
// private String prototype;
@ -61,9 +63,9 @@ public class Node implements INode, Serializable {
lastmodified = in.readLong ();
content = (byte[]) in.readObject ();
contentType = (String) in.readObject ();
subnodes = (Vector) in.readObject ();
links = (Vector) in.readObject ();
proplinks = (Vector) in.readObject ();
subnodes = (ExternalizableVector) in.readObject ();
links = (ExternalizableVector) in.readObject ();
proplinks = (ExternalizableVector) in.readObject ();
propMap = (Hashtable) in.readObject ();
anonymous = in.readBoolean ();
if (version == 2)
@ -744,12 +746,12 @@ public class Node implements INode, Serializable {
if (subnodes != null && subnodes.contains (node.getID ())) {
// Node is already subnode of this - just move to new position
subnodes.removeElement (node.getID ());
subnodes.remove (node.getID ());
where = Math.min (where, numberOfNodes ());
subnodes.insertElementAt (node.getID (), where);
subnodes.add (where, node.getID ());
} else {
if (subnodes == null) subnodes = new ExternalizableVector ();
subnodes.insertElementAt (node.getID (), where);
subnodes.add (where, node.getID ());
// check if properties are subnodes (_properties.aresubnodes=true)
if (dbmap != null && node.dbmap != null) {
@ -839,7 +841,7 @@ public class Node implements INode, Serializable {
links = new ExternalizableVector ();
Object fromID = from.getID ();
if (!links.contains (fromID))
links.addElement (fromID);
links.add (fromID);
}
public INode getSubnode (String path) {
@ -900,9 +902,9 @@ public class Node implements INode, Serializable {
if (subnodes.size () > index) {
// check if there is a group-by relation
if (srel != null && srel.groupby != null)
retval = nmgr.getNode (this, (String) subnodes.elementAt (index), srel);
retval = nmgr.getNode (this, (String) subnodes.get (index), srel);
else
retval = nmgr.getNode ((String) subnodes.elementAt (index), smap);
retval = nmgr.getNode ((String) subnodes.get (index), smap);
if (retval != null && retval.parentID == null && !"root".equalsIgnoreCase (retval.getPrototype ())) {
retval.setParent (this);
retval.anonymous = true;
@ -944,7 +946,7 @@ public class Node implements INode, Serializable {
node.setSubnodeRelation (snrel);
} else {
setNode (sid, node);
subnodes.addElement (node.getID ());
subnodes.add (node.getID ());
}
nmgr.evictKey (node.getKey ());
return node;
@ -982,7 +984,7 @@ public class Node implements INode, Serializable {
} else {
// removed just a link, not the main node.
if (n.links != null) {
n.links.removeElement (this.id);
n.links.remove (this.id);
if (n.state == CLEAN) n.markAs (MODIFIED);
}
}
@ -994,7 +996,7 @@ public class Node implements INode, Serializable {
*/
protected void releaseNode (Node node) {
if (subnodes != null)
subnodes.removeElement (node.getID ());
subnodes.remove (node.getID ());
lastSubnodeChange = System.currentTimeMillis ();
@ -1044,14 +1046,14 @@ public class Node implements INode, Serializable {
int l = links == null ? 0 : links.size ();
for (int i = 0; i < l; i++) {
// TODO: solve dbmap problem
Node link = nmgr.getNode ((String) links.elementAt (i), null);
Node link = nmgr.getNode ((String) links.get (i), null);
if (link != null) link.releaseNode (this);
}
// clean up all nodes that use n as a property
if (proplinks != null) {
for (Enumeration e1 = proplinks.elements (); e1.hasMoreElements (); ) try {
String pid = (String) e1.nextElement ();
for (Iterator e1 = proplinks.iterator (); e1.hasNext (); ) try {
String pid = (String) e1.next ();
Node pnode = nmgr.getNode (pid, null);
if (pnode != null) {
nmgr.logEvent("Warning: Can't unset node property of "+pnode.getFullName ());
@ -1072,15 +1074,15 @@ public class Node implements INode, Serializable {
// the parent info is not 100% accurate for them.
if (subnodes != null) {
Vector v = new Vector ();
// removeElement modifies the Vector we are enumerating, so we are extra careful.
// remove modifies the Vector we are enumerating, so we are extra careful.
for (Enumeration e3 = getSubnodes (); e3.hasMoreElements(); ) {
v.addElement (e3.nextElement());
v.add (e3.nextElement());
}
int m = v.size ();
for (int i=0; i<m; i++) {
// getParent() is heuristical/implicit for relational nodes, so we don't base
// a cascading delete on that criterium for relational nodes.
Node n = (Node) v.elementAt (i);
Node n = (Node) v.get (i);
if (n.dbmap == null || !n.dbmap.isRelational())
removeNode (n);
}
@ -1616,14 +1618,14 @@ public class Node implements INode, Serializable {
proplinks = new ExternalizableVector ();
String plid = n.getID ();
if (!proplinks.contains (plid))
proplinks.addElement (n.getID ());
proplinks.add (n.getID ());
if (state == CLEAN || state == DELETED)
markAs (MODIFIED);
}
protected void unregisterPropLink (INode n) {
if (proplinks != null)
proplinks.removeElement (n.getID ());
proplinks.remove (n.getID ());
// Server.throwNodeEvent (new NodeEvent (this, NodeEvent.NODE_REMOVED));
// Server.throwNodeEvent (new NodeEvent (n, NodeEvent.SUBNODE_REMOVED, this));
if (state == CLEAN)
@ -1631,7 +1633,7 @@ public class Node implements INode, Serializable {
}
public void sanityCheck () {
/* public void sanityCheck () {
checkSubnodes ();
checkProperties ();
checkLinks ();
@ -1646,10 +1648,10 @@ public class Node implements INode, Serializable {
Vector v = links == null ? null : (Vector) links.clone ();
int l = v == null ? 0 : v.size ();
for (int i = 0; i < l; i++) {
String k = (String) v.elementAt (i);
String k = (String) v.get (i);
Node link = nmgr.getNode (k, null);
if (link == null) {
links.removeElement (k);
links.remove (k);
System.out.println ("**** link "+k+": "+this.getFullName ());
markAs (MODIFIED);
}
@ -1660,10 +1662,10 @@ public class Node implements INode, Serializable {
Vector v = proplinks == null ? null : (Vector) proplinks.clone ();
int l = v == null ? 0 : v.size ();
for (int i = 0; i < l; i++) {
String k = (String) v.elementAt (i);
String k = (String) v.get (i);
Node link = nmgr.getNode (k, null);
if (link == null) {
proplinks.removeElement (k);
proplinks.remove (k);
System.out.println ("**** proplink "+k+": "+this.getFullName ());
markAs (MODIFIED);
}
@ -1674,10 +1676,10 @@ public class Node implements INode, Serializable {
Vector v = subnodes == null ? null : (Vector) subnodes.clone ();
int l = v == null ? 0 : v.size ();
for (int i = 0; i < l; i++) {
String k = (String) v.elementAt (i);
String k = (String) v.get (i);
Node link = nmgr.getNode (k, null);
if (link == null) {
subnodes.removeElement (k);
subnodes.remove (k);
System.out.println ("**** subnode "+k+": "+this.getFullName ());
markAs (MODIFIED);
}
@ -1697,7 +1699,7 @@ public class Node implements INode, Serializable {
}
}
}
} */
/**
* content-related

21
src/helma/objectmodel/db/NodeManager.java
View file

@ -3,14 +3,15 @@
package helma.objectmodel.db;
import java.io.*;
import java.util.Vector;
import java.util.Properties;
import helma.util.CacheMap;
import helma.objectmodel.*;
import helma.framework.core.Application;
import com.sleepycat.db.*;
import java.sql.*;
import java.io.*;
import java.util.List;
import java.util.ArrayList;
import java.util.Properties;
import java.util.Vector;
import java.util.Enumeration;
import com.workingdogs.village.*;
@ -225,7 +226,7 @@ public final class NodeManager {
if (node instanceof NullNode) {
if (node.created() < rel.other.lastDataChange)
node = null; // cached null not valid anymore
} else if (home.contains (node) < 0) {
} else if (app.doesSubnodeChecking () && home.contains (node) < 0) {
node = null;
}
}
@ -571,7 +572,7 @@ public final class NodeManager {
* Loades subnodes via subnode relation. Only the ID index is loaded, the nodes are
* loaded later on demand.
*/
public Vector getNodeIDs (Node home, Relation rel) throws Exception {
public List getNodeIDs (Node home, Relation rel) throws Exception {
Transactor tx = (Transactor) Thread.currentThread ();
// tx.timer.beginEvent ("getNodeIDs "+home);
@ -580,7 +581,7 @@ public final class NodeManager {
// this should never be called for embedded nodes
throw new RuntimeException ("NodeMgr.countNodes called for non-relational node "+home);
} else {
Vector retval = new Vector ();
List retval = new ArrayList ();
// if we do a groupby query (creating an intermediate layer of groupby nodes),
// retrieve the value of that field instead of the primary key
String idfield = rel.groupby == null ? rel.other.getIDField () : rel.groupby;
@ -617,7 +618,7 @@ public final class NodeManager {
for (int i=0; i<qds.size (); i++) {
Record rec = qds.getRecord (i);
String kstr = rec.getValue (1).asString ();
retval.addElement (kstr);
retval.add (kstr);
// if these are groupby nodes, evict nullNode keys
if (rel.groupby != null) {
Key key = new Key ((String) null, home.getKey ().getVirtualID (kstr));
@ -641,7 +642,7 @@ public final class NodeManager {
* actually loades all nodes in one go, which is better for small node collections.
* This method is used when xxx.loadmode=aggressive is specified.
*/
public Vector getNodes (Node home, Relation rel) throws Exception {
public List getNodes (Node home, Relation rel) throws Exception {
Transactor tx = (Transactor) Thread.currentThread ();
// tx.timer.beginEvent ("getNodes "+home);
@ -650,7 +651,7 @@ public final class NodeManager {
// this should never be called for embedded nodes
throw new RuntimeException ("NodeMgr.countNodes called for non-relational node "+home);
} else {
Vector retval = new Vector ();
List retval = new ArrayList ();
DbMapping dbm = rel.other;
TableDataSet tds = new TableDataSet (dbm.getConnection (), dbm.getSchema (), dbm.getKeyDef ());
@ -682,7 +683,7 @@ public final class NodeManager {
// create new Nodes.
Record rec = tds.getRecord (i);
Node node = new Node (rel.other, rec, safe);
retval.addElement (node.getID());
retval.add (node.getID());
Key primKey = node.getKey ();
// do we need to synchronize on primKey here?
synchronized (cache) {

5
src/helma/objectmodel/db/WrappedNodeManager.java
View file

@ -4,6 +4,7 @@
package helma.objectmodel.db;
import helma.objectmodel.*;
import java.util.List;
import java.util.Vector;
@ -47,7 +48,7 @@ import java.util.Vector;
}
}
public Vector getNodes (Node home, Relation rel) {
public List getNodes (Node home, Relation rel) {
try {
return nmgr.getNodes (home, rel);
} catch (Exception x) {
@ -57,7 +58,7 @@ import java.util.Vector;
}
}
public Vector getNodeIDs (Node home, Relation rel) {
public List getNodeIDs (Node home, Relation rel) {
try {
return nmgr.getNodeIDs (home, rel);
} catch (Exception x) {