Column.java 文件源码

/**
 * Create an expression to check this column against several values.
 * <p>
 * SQL: this IN (values...)
 *
 * @param values The values to test against this column
 * @return Expression
 */
@SafeVarargs
@NonNull
@CheckResult
public final Expr in(@NonNull @Size(min = 1) T... values) {
  final int length = values.length;
  if (length == 0) {
    throw new SQLException("Empty IN clause values");
  }
  final String[] args = new String[length];
  final StringBuilder sb = new StringBuilder(6 + (length << 1));
  sb.append(" IN (");
  for (int i = 0; i < length; i++) {
    if (i > 0) {
      sb.append(',');
    }
    sb.append('?');
    args[i] = toSqlArg(values[i]);
  }
  sb.append(')');
  return new ExprN(this, sb.toString(), args);
}