private String describe()

in HSQL/src/org/hsqldb1/Expression.java [871:1107]

• 177 lines of code
• 53 McCabe index (conditional complexity)

    private String describe(Session session, int blanks) {

        int          lIType;
        StringBuffer buf = new StringBuffer(64);

        buf.append('\n');

        for (int i = 0; i < blanks; i++) {
            buf.append(' ');
        }

        if (oldIType != -1) {
            buf.append("SET TRUE, WAS: ");
        }

        lIType = oldIType == -1 ? exprType
                                : oldIType;

        switch (lIType) {

            case FUNCTION :
                buf.append("FUNCTION ");
                buf.append(function.describe(session));

                return buf.toString();

            case VALUE :
                if (isParam) {
                    buf.append("PARAM ");
                }

                buf.append("VALUE = ").append(valueData);
                buf.append(", TYPE = ").append(Types.getTypeString(dataType));

                return buf.toString();

            case COLUMN :
                buf.append("COLUMN ");

                if (tableName != null) {
                    buf.append(tableName);
                    buf.append('.');
                }

                buf.append(columnName);

                return buf.toString();

            case QUERY :
                buf.append("QUERY ");
                buf.append(subQuery.select.describe(session));

                return buf.toString();

            case TRUE :
                buf.append("TRUE ");
                break;

            case FALSE :
                buf.append("FALSE ");
                break;

            case VALUELIST :
                buf.append("VALUELIST ");
                buf.append(" TYPE = ").append(Types.getTypeString(dataType));

                if (valueList != null) {
                    for (int i = 0; i < valueList.length; i++) {
                        buf.append(valueList[i].describe(session,
                                                         blanks + blanks));
                        buf.append(' ');
                    }
                }
                break;

            case ASTERISK :
                buf.append("* ");
                break;

            case NEGATE :
                buf.append("NEGATE ");
                break;

            case ADD :
                buf.append("ADD ");
                break;

            case SUBTRACT :
                buf.append("SUBTRACT ");
                break;

            case MULTIPLY :
                buf.append("MULTIPLY ");
                break;

            case DIVIDE :
                buf.append("DIVIDE ");
                break;

            case CONCAT :
                buf.append("CONCAT ");
                break;

            case NOT :
                buf.append("NOT ");
                break;

            case EQUAL :
                buf.append("EQUAL ");
                break;

            case BIGGER_EQUAL :
                buf.append("BIGGER_EQUAL ");
                break;

            case BIGGER :
                buf.append("BIGGER ");
                break;

            case SMALLER :
                buf.append("SMALLER ");
                break;

            case SMALLER_EQUAL :
                buf.append("SMALLER_EQUAL ");
                break;

            case NOT_EQUAL :
                buf.append("NOT_EQUAL ");
                break;

            case LIKE :
                buf.append("LIKE ");
                buf.append(likeObject.describe(session));
                break;

            case AND :
                buf.append("AND ");
                break;

            case OR :
                buf.append("OR ");
                break;

            case ALL :
                buf.append("ALL ");
                break;

            case ANY :
                buf.append("ANY ");
                break;

            case IN :
                buf.append("IN ");
                break;

            case IS_NULL :
                buf.append("IS_NULL ");
                break;

            case EXISTS :
                buf.append("EXISTS ");
                break;

            case COUNT :
                buf.append("COUNT ");
                break;

            case SUM :
                buf.append("SUM ");
                break;

            case MIN :
                buf.append("MIN ");
                break;

            case MAX :
                buf.append("MAX ");
                break;

            case AVG :
                buf.append("AVG ");
                break;

            case EVERY :
                buf.append(Token.T_EVERY).append(' ');
                break;

            case SOME :
                buf.append(Token.T_SOME).append(' ');
                break;

            case STDDEV_POP :
                buf.append(Token.T_STDDEV_POP).append(' ');
                break;

            case STDDEV_SAMP :
                buf.append(Token.T_STDDEV_SAMP).append(' ');
                break;

            case VAR_POP :
                buf.append(Token.T_VAR_POP).append(' ');
                break;

            case VAR_SAMP :
                buf.append(Token.T_VAR_SAMP).append(' ');
                break;

            case CONVERT :
                buf.append("CONVERT ");
                buf.append(Types.getTypeString(dataType, precision, scale));
                buf.append(' ');
                break;

            case CASEWHEN :
                buf.append("CASEWHEN ");
                break;
        }

        if (isInJoin) {
            buf.append(" join");
        }

        if (eArg != null) {
            buf.append(" arg1=[");
            buf.append(eArg.describe(session, blanks + 1));
            buf.append(']');
        }

        if (eArg2 != null) {
            buf.append(" arg2=[");
            buf.append(eArg2.describe(session, blanks + 1));
            buf.append(']');
        }

        return buf.toString();
    }