public void resolveCollectionProperty(AST expr) throws SemanticException {
String propertyName = CollectionProperties.getNormalizedPropertyName(getMethodName());
if (expr instanceof FromReferenceNode) {
FromReferenceNode collectionNode = (FromReferenceNode) expr;
// If this is 'elements' then create a new FROM element.
if (CollectionPropertyNames.COLLECTION_ELEMENTS.equals(propertyName)) {
handleElements(collectionNode, propertyName);
} else {
// Not elements(x)
fromElement = collectionNode.getFromElement();
setDataType(fromElement.getPropertyType(propertyName, propertyName));
selectColumns = fromElement.toColumns(fromElement.getTableAlias(), propertyName, inSelect);
}
if (collectionNode instanceof DotNode) {
prepareAnyImplicitJoins((DotNode) collectionNode);
}
if (!inSelect) {
fromElement.setText("");
fromElement.setUseWhereFragment(false);
}
prepareSelectColumns(selectColumns);
setText(selectColumns[0]);
setType(SqlTokenTypes.SQL_TOKEN);
} else {
throw new SemanticException(
"Unexpected expression " + expr + " found for collection function " + propertyName);
}
}
private void preprocess(String token, QueryTranslatorImpl q) throws QueryException {
// ugly hack for cases like "elements(foo.bar.collection)"
// (multi-part path expression ending in elements or indices)
String[] tokens = StringHelper.split(".", token, true);
if (tokens.length > 5
&& (CollectionPropertyNames.COLLECTION_ELEMENTS.equals(tokens[tokens.length - 1])
|| CollectionPropertyNames.COLLECTION_INDICES.equals(tokens[tokens.length - 1]))) {
pathExpressionParser.start(q);
for (int i = 0; i < tokens.length - 3; i++) {
pathExpressionParser.token(tokens[i], q);
}
pathExpressionParser.token(null, q);
pathExpressionParser.end(q);
addJoin(pathExpressionParser.getWhereJoin(), q);
pathExpressionParser.ignoreInitialJoin();
}
}