/**
* Determines whether it is possible to implement a set of expressions in Java.
*
* @param program Program to translate
* @return whether all expressions in the program can be implemented
*/
public boolean canTranslate(RelNode rel, RexProgram program) {
RexToOJTranslator translator = newTranslator(rel);
TranslationTester tester = new TranslationTester(translator, true);
final List<RexNode> exprList = program.getExprList();
for (RexNode expr : exprList) {
if (!tester.canTranslate(expr)) {
return false;
}
}
return true;
}
/**
* Determines whether it is possible to implement an expression in Java.
*
* @param rel Relational expression
* @param expression Expression
* @param deep if true, operands of the given expression are tested for translatability as well;
* if false only the top level expression is tested
* @return whether the expression can be implemented
*/
public boolean canTranslate(RelNode rel, RexNode expression, boolean deep) {
RexToOJTranslator translator = newTranslator(rel);
TranslationTester tester = new TranslationTester(translator, deep);
return tester.canTranslate(expression);
}