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* Allow _parent to consist of three elements, such as page.comments.blocked.

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Fixes bug 563 - http://helma.org/bugs/show_bug.cgi?id=563
* Throw an exception when adding to a collection with accessname defined and the 
  collection already contains an object with the given name. Previously, the old object 
  was deleted from the database. 
  Fixes bug 561 - http://helma.org/bugs/show_bug.cgi?id=561
This commit is contained in:
hns 2007-10-11 12:21:40 +00:00
parent 3c059e8778
commit ae0536eb26
2 changed files with 32 additions and 26 deletions
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28
src/helma/objectmodel/db/Node.java
View file

@ -789,13 +789,18 @@ public final class Node implements INode, Serializable {
if (pn2 == null) {
getApp().logError("Error: Can't retrieve parent node " +
pinfo + " for " + this);
} else if (pinfo.collectionname != null) {
pn2 = (Node) pn2.getNode(pinfo.collectionname);
} else if (pn2.equals(this)) {
// a special case we want to support: virtualname is actually
// a reference to this node, not a collection containint this node.
setParent(pn);
name = pinfo.virtualname;
anonymous = false;
return pn;
}
pn = pn2;
pn = pn2;
}
DbMapping dbm = (pn == null) ? null : pn.getDbMapping();
@ -952,11 +957,11 @@ public final class Node implements INode, Serializable {
}
// check if subnode accessname is set. If so, check if another node
// uses the same access name and remove it
if ((dbmap != null) && (node.dbmap != null)) {
// uses the same access name, throwing an exception if so.
if (dbmap != null && node.dbmap != null) {
Relation prel = dbmap.getSubnodeRelation();
if ((prel != null) && (prel.accessName != null)) {
if (prel != null && prel.accessName != null) {
Relation localrel = node.dbmap.columnNameToRelation(prel.accessName);
// if no relation from db column to prop name is found,
@ -965,15 +970,14 @@ public final class Node implements INode, Serializable {
: localrel.propName;
String prop = node.getString(propname);
if ((prop != null) && (prop.length() > 0)) {
if (prop != null && prop.length() > 0) {
INode old = (INode) getChildElement(prop);
if ((old != null) && (old != node)) {
// FIXME: we delete the existing node here,
// but actually the app developer should prevent this from
// happening, so it might be better to throw an exception.
old.remove();
this.removeNode(old);
if (old != null && old != node) {
// A node with this name already exists. This is a
// programming error, throw an exception.
throw new RuntimeException("An object named \"" + prop +
"\" is already contained in the collection.");
}
if (state != TRANSIENT) {
@ -2714,7 +2718,7 @@ public final class Node implements INode, Serializable {
* @return the number of loaded nodes within this collection update
*/
public int updateSubnodes () {
// FIXME: what do we do if dbmap is null
// TODO: what do we do if dbmap is null
if (dbmap == null) {
throw new RuntimeException (this + " doesn't have a DbMapping");
}

30
src/helma/objectmodel/db/ParentInfo.java
View file

@ -16,6 +16,8 @@
package helma.objectmodel.db;
import helma.util.StringUtils;
/**
* This class describes a parent relation between releational nodes.
@ -23,38 +25,38 @@ package helma.objectmodel.db;
public class ParentInfo {
public final String propname;
public final String virtualname;
public final String collectionname;
public final boolean isroot;
/**
* Creates a new ParentInfo object.
*
* @param desc ...
* @param desc a single parent info descriptor
*/
public ParentInfo(String desc) {
// [named] isn't used anymore, we just want to keep the parsing compatible.
int n = desc.indexOf("[named]");
String d = n>-1 ? desc.substring(0, n) : desc;
desc = n > -1 ? desc.substring(0, n) : desc;
int dot = d.indexOf(".");
String[] parts = StringUtils.split(desc, ".");
if (dot > -1) {
propname = d.substring(0, dot).trim();
virtualname = d.substring(dot + 1).trim();
} else {
propname = d.trim();
virtualname = null;
}
propname = parts.length > 0 ? parts[0].trim() : null;
virtualname = parts.length > 1 ? parts[1].trim() : null;
collectionname = parts.length > 2 ? parts[2].trim() : null;
isroot = "root".equalsIgnoreCase(propname);
}
/**
*
*
* @return ...
* @return a string representation of the parent info
*/
public String toString() {
return "ParentInfo[" + propname + "," + virtualname + "]";
StringBuffer b = new StringBuffer("ParentInfo[").append(propname);
if (virtualname != null)
b.append(".").append(virtualname);
if (collectionname != null)
b.append(".").append(collectionname);
return b.append("]").toString();
}
}