public static void processDynamicFilterParameters(
final String sqlFragment, final ParameterContainer container, final HqlSqlWalker walker) {
if (walker.getEnabledFilters().isEmpty()
&& (!hasDynamicFilterParam(sqlFragment))
&& (!(hasCollectionFilterParam(sqlFragment)))) {
return;
}
Dialect dialect = walker.getSessionFactoryHelper().getFactory().getDialect();
String symbols =
new StringBuffer()
.append(ParserHelper.HQL_SEPARATORS)
.append(dialect.openQuote())
.append(dialect.closeQuote())
.toString();
StringTokenizer tokens = new StringTokenizer(sqlFragment, symbols, true);
StringBuffer result = new StringBuffer();
while (tokens.hasMoreTokens()) {
final String token = tokens.nextToken();
if (token.startsWith(ParserHelper.HQL_VARIABLE_PREFIX)) {
final String filterParameterName = token.substring(1);
final String[] parts = LoadQueryInfluencers.parseFilterParameterName(filterParameterName);
final FilterImpl filter = (FilterImpl) walker.getEnabledFilters().get(parts[0]);
final Object value = filter.getParameter(parts[1]);
final Type type = filter.getFilterDefinition().getParameterType(parts[1]);
final String typeBindFragment =
StringHelper.join(
",",
ArrayHelper.fillArray(
"?", type.getColumnSpan(walker.getSessionFactoryHelper().getFactory())));
final String bindFragment =
(value != null && Collection.class.isInstance(value))
? StringHelper.join(
",", ArrayHelper.fillArray(typeBindFragment, ((Collection) value).size()))
: typeBindFragment;
result.append(bindFragment);
container.addEmbeddedParameter(
new DynamicFilterParameterSpecification(parts[0], parts[1], type));
} else {
result.append(token);
}
}
container.setText(result.toString());
}
