@Override
public String translate(ExprCompiler compiler, RexCall call) {
String val = compiler.reserveName();
PrintWriter pw = compiler.pw;
RexNode op = call.getOperands().get(0);
String lhs = op.accept(compiler);
pw.print(
String.format(
"final %1$s %2$s = (%1$s) %3$s;\n", compiler.javaTypeName(call), val, lhs));
return val;
}
@Override
public String translate(ExprCompiler compiler, RexCall call) {
String val = compiler.reserveName();
PrintWriter pw = compiler.pw;
RexNode op = call.getOperands().get(0);
String lhs = op.accept(compiler);
boolean nullable = call.getType().isNullable();
pw.print(String.format("final %s %s;\n", compiler.javaTypeName(call), val));
if (!nullable) {
pw.print(String.format("%1$s = !(%2$s);\n", val, lhs));
} else {
String s =
foldNullExpr(String.format("%1$s == null ? null : !(%1$s)", lhs), "null", op);
pw.print(String.format("%1$s = %2$s;\n", val, s));
}
return val;
}
@Override
public String translate(ExprCompiler compiler, RexCall call) {
String val = compiler.reserveName();
PrintWriter pw = compiler.pw;
pw.print(String.format("final %s %s;\n", compiler.javaTypeName(call), val));
RexNode op0 = call.getOperands().get(0);
RexNode op1 = call.getOperands().get(1);
boolean lhsNullable = op0.getType().isNullable();
boolean rhsNullable = op1.getType().isNullable();
String lhs = op0.accept(compiler);
if (!lhsNullable) {
pw.print(String.format("if (%2$s) { %1$s = true; }\n", val, lhs));
pw.print("else {\n");
String rhs = op1.accept(compiler);
pw.print(String.format(" %1$s = %2$s;\n}\n", val, rhs));
} else {
String foldedLHS =
foldNullExpr(String.format("%1$s == null || !(%1$s)", lhs), "true", op0);
pw.print(String.format("if (%s) {\n", foldedLHS));
String rhs = op1.accept(compiler);
String s;
if (rhsNullable) {
s =
foldNullExpr(
String.format(
"(%2$s != null && %2$s) ? Boolean.TRUE : ((%1$s == null || %2$s == null) ? null : Boolean.FALSE)",
lhs, rhs),
"null",
op1);
} else {
s = String.format("%2$s ? Boolean.valueOf(%2$s) : %1$s", lhs, rhs);
}
pw.print(String.format(" %1$s = %2$s;\n", val, s));
pw.print(String.format("} else { %1$s = true; }\n", val));
}
return val;
}
private String javaTypeName(RexNode node) {
Type ty = typeFactory.getJavaClass(node.getType());
return ((Class<?>) ty).getCanonicalName();
}