/** INTERNAL: Find the alias for a given table */
public DatabaseTable aliasForTable(DatabaseTable table) {
DatabaseMapping mapping = getMapping();
if (isAttribute()
|| ((mapping != null)
&& (mapping.isAggregateObjectMapping() || mapping.isTransformationMapping()))) {
return ((DataExpression) getBaseExpression()).aliasForTable(table);
}
// "ref" and "structure" mappings, no table printed in the FROM clause, need to get the table
// alias form the parent table
if ((mapping != null) && (mapping.isReferenceMapping() || mapping.isStructureMapping())) {
DatabaseTable alias =
getBaseExpression().aliasForTable(mapping.getDescriptor().getTables().firstElement());
alias.setName(alias.getName() + "." + mapping.getField().getName());
return alias;
}
// For direct-collection mappings the alias is store on the table expression.
if ((mapping != null) && (mapping.isDirectCollectionMapping())) {
if (tableAliases != null) {
DatabaseTable aliasedTable = tableAliases.keyAtValue(table);
if (aliasedTable != null) {
return aliasedTable;
}
}
return getTable(table).aliasForTable(table);
}
return super.aliasForTable(table);
}
protected static boolean verifyFieldAndMapping(
AbstractSession session,
DatabaseField field,
ClassDescriptor descriptor,
DatabaseMapping mapping) {
verifyField(session, field, descriptor);
while (mapping.isAggregateObjectMapping()) {
ClassDescriptor referenceDescriptor =
((AggregateObjectMapping) mapping).getReferenceDescriptor();
mapping = referenceDescriptor.getObjectBuilder().getMappingForField(field);
verifyFieldAndMapping(session, field, referenceDescriptor, mapping);
}
if (!mapping.isDirectToFieldMapping() && !mapping.isTransformationMapping()) {
String mappingTypeName = Helper.getShortClassName(mapping);
session
.getIntegrityChecker()
.handleError(
DescriptorException.returningPolicyMappingNotSupported(
field.getName(), mappingTypeName, mapping));
return false;
} else {
return true;
}
}
