/**
* Save the given object to the database. Creates a new object if model id property has not been
* set
*
* @return true on success.
*/
public boolean persist(TYPE item) {
if (item.getId() == AbstractModel.NO_ID) {
return createNew(item);
} else {
ContentValues values = item.getSetValues();
if (values.size() == 0) // nothing changed
return true;
return saveExisting(item);
}
}
/**
* Saves the given item. Will not create a new item!
*
* @param database
* @param table table name
* @param item item model
* @return returns true on success.
*/
public boolean saveExisting(TYPE item) {
ContentValues values = item.getSetValues();
if (values == null || values.size() == 0) // nothing changed
return true;
boolean result =
database.update(
table.name, values, AbstractModel.ID_PROPERTY.eq(item.getId()).toString(), null)
> 0;
if (result) {
onModelUpdated(item);
item.markSaved();
}
return result;
}
/**
* Update all matching a clause to have the values set on template object.
*
* <p>Example (updates "joe" => "bob" in metadata value1): {code} Metadata item = new Metadata();
* item.setValue(Metadata.VALUE1, "bob"); update(item, Metadata.VALUE1.eq("joe")); {code}
*
* @param where sql criteria
* @param template set fields on this object in order to set them in the db.
* @return # of updated items
*/
public int update(Criterion where, TYPE template) {
return database.update(table.name, template.getSetValues(), where.toString(), null);
}