antville/helma
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added additional dbfield field for non-primary

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keys
This commit is contained in:
hns 2001-08-05 19:18:06 +00:00
parent c3236be368
commit 31eee7f668
1 changed files with 24 additions and 4 deletions
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26
src/helma/objectmodel/DbKey.java
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@ -14,10 +14,14 @@ import java.io.Serializable;
*/ */
public final class DbKey implements Key, Serializable { public final class DbKey implements Key, Serializable {
// the name of the prototype which defines the storage of this object.
// this is the name of the object's prototype, or one of its ancestors.
// If null, the object is stored in the embedded db.
private final String storageName; private final String storageName;
// the id that defines this key's object within the above storage space
private final String id; private final String id;
// private transient int hash; // the name of the db field this key refers to. A null value means the primary key column is used.
private final String idfield;
/** /**
* make a key for a persistent Object, describing its datasource and id. * make a key for a persistent Object, describing its datasource and id.
@ -25,13 +29,27 @@ public final class DbKey implements Key, Serializable {
public DbKey (DbMapping dbmap, String id) { public DbKey (DbMapping dbmap, String id) {
this.id = id; this.id = id;
this.storageName = dbmap == null ? null : dbmap.getStorageTypeName (); this.storageName = dbmap == null ? null : dbmap.getStorageTypeName ();
this.idfield = null;
}
/**
* make a key for a persistent Object, describing its datasource and id using something
* else than the primary key column.
*/
public DbKey (DbMapping dbmap, String id, String idfield) {
this.id = id;
this.storageName = dbmap == null ? null : dbmap.getStorageTypeName ();
this.idfield = idfield;
} }
public boolean equals (Object what) { public boolean equals (Object what) {
if (what == this)
return true;
try { try {
DbKey k = (DbKey) what; DbKey k = (DbKey) what;
return (storageName == k.storageName || storageName.equals (k.storageName)) && return (storageName == k.storageName || storageName.equals (k.storageName)) &&
(idfield == k.idfield || idfield.equals (k.idfield)) &&
(id == k.id || id.equals (k.id)); (id == k.id || id.equals (k.id));
} catch (Exception x) { } catch (Exception x) {
return false; return false;
@ -40,7 +58,6 @@ public final class DbKey implements Key, Serializable {
public int hashCode () { public int hashCode () {
return storageName == null ? id.hashCode () : storageName.hashCode() + id.hashCode (); return storageName == null ? id.hashCode () : storageName.hashCode() + id.hashCode ();
// return hash;
} }
public Key getParentKey () { public Key getParentKey () {
@ -55,6 +72,9 @@ public final class DbKey implements Key, Serializable {
return id; return id;
} }
public String getIDField () {
return idfield;
}
public String toString () { public String toString () {
return storageName == null ? "["+id+"]" : storageName+"["+id+"]"; return storageName == null ? "["+id+"]" : storageName+"["+id+"]";