/** INTERNAL: Print SQL onto the stream, using the ExpressionPrinter for context */ public void printSQL(ExpressionSQLPrinter printer) { if (isAttribute()) { printer.printField(getAliasedField()); } // If the mapping is a direct collection then this falls into a gray area. // It must be treated as an attribute at this moment for it has a direct field. // However it is not an attribute in the sense that it also represents a foreign // reference and a mapping criteria has been added. // For bug 2900974 these are now handled as non-attributes during normalize but // as attributes when printing SQL. // if ((!isAttribute()) && (getMapping() != null) && getMapping().isDirectCollectionMapping()) { DirectCollectionMapping directCollectionMapping = (DirectCollectionMapping) getMapping(); // The aliased table comes for free as it was a required part of the join criteria. TableExpression table = (TableExpression) getTable(directCollectionMapping.getReferenceTable()); DatabaseTable aliasedTable = table.aliasForTable(table.getTable()); DatabaseField aliasedField = (DatabaseField) directCollectionMapping.getDirectField().clone(); aliasedField.setTable(aliasedTable); printer.printField(aliasedField); } if ((getMapping() != null) && getMapping().isNestedTableMapping()) { DatabaseTable tableAlias = aliasForTable(new NestedTable(this)); printer.printString(tableAlias.getName()); } }
/** INTERNAL: Alias the database field for our current environment */ protected void initializeAliasedField() { DatabaseField tempField = (DatabaseField) getField().clone(); DatabaseTable aliasedTable = getAliasedTable(); // Put in a special check here so that if the aliasing does nothing we don't cache the // result because it's invalid. This saves us from caching premature data if e.g. debugging // causes us to print too early" // if (aliasedTable.equals(getField().getTable())) { // return; // } else { aliasedField = tempField; aliasedField.setTable(aliasedTable); // } }