OtterMind/Chat2DB · error · ParamBusinessException

exportType

exportType

Error message

exportType

What it means

Thrown by DbDmlExportServiceImpl.prepareExport after EasyEnumUtils.getEnum(ExportTypeEnum.class, param.getExportType()) returns null, meaning the supplied export type does not match any ExportTypeEnum (CSV/EXCEL/INSERT/SQL). It is a ParamBusinessException, so the resolved code is 'common.paramDetailError' with arg 'exportType', producing 'The parameter: exportType is incorrect'. This is an input-contract failure, not a runtime fault.

Source

Thrown at chat2db-community-server/chat2db-community-domain/chat2db-community-domain-core/src/main/java/ai/chat2db/community/domain/core/impl/db/DbDmlExportServiceImpl.java:64

    @Override
    public String resolveTableName(String sql, String databaseName, String schemaName) {
        DbType dbType = currentDruidDbType();
        if (dbType == null) {
            return StringUtils.join(Lists.newArrayList(databaseName, schemaName), "_");
        }
        try {
            return SqlUtils.getTableName(sql, dbType);
        } catch (Exception ignored) { // impl-contract: fallback - export file naming falls back to database/schema when SQL parsing fails.
            return StringUtils.join(Lists.newArrayList(databaseName, schemaName), "_");
        }
    }

    @Override
    public DbDmlExportPlan prepareExport(DbDmlExportRequest param) {
        String sql = resolveSql(param);
        ExportTypeEnum exportType = EasyEnumUtils.getEnum(ExportTypeEnum.class, param.getExportType());
        if (exportType == null) {
            throw new ParamBusinessException("exportType");
        }
        String tableName = resolveTableName(sql, param.getDatabaseName(), param.getSchemaName());
        param.setSql(sql);
        return DbDmlExportPlan.builder()
                .fileName(buildFileName(tableName))
                .exportType(exportType)
                .exportRequest(param)
                .build();
    }

    @Override
    public void export(DbDmlExportRequest param, OutputStream outputStream) throws IOException {
        ExportTypeEnum exportType = ExportTypeEnum.from(param.getExportType());
        if (ExportTypeEnum.CSV == exportType) {
            exportCsv(param.getSql(), outputStream, param.getResultSetId());
            return;
        }
        if (ExportTypeEnum.EXCEL == exportType) {

View on GitHub (pinned to 5ee1e990e7)

Solutions

1. Send one of the valid ExportTypeEnum values (verify the enum constants in the current build) for exportType.
2. Validate exportType on the client/adapter before calling prepareExport and surface a clear message.
3. If a new export format is intended, extend ExportTypeEnum and the matching export branch rather than passing an unknown string.

Example fix

// before
param.setExportType("PDF"); // not an ExportTypeEnum
service.prepareExport(param); // -> ParamBusinessException

// after
param.setExportType(ExportTypeEnum.EXCEL.name());
service.prepareExport(param);

ExportTypeEnum t = EasyEnumUtils.getEnum(ExportTypeEnum.class, param.getExportType());
if (t == null) {
    throw new ParamBusinessException("exportType");
}
service.prepareExport(param);

// Narrow the export type before export
boolean isKnownExportType(String v) {
    if (v == null) return false;
    for (ExportTypeEnum e : ExportTypeEnum.values()) {
        if (e.name().equals(v)) return true;
    }
    return false;
}

When it happens

Trigger: Export endpoint invoked with exportType null, blank, or a value not present in ExportTypeEnum (typo, legacy code, out-of-range ordinal). prepareExport is the entry point that builds DbDmlExportPlan, so an invalid type aborts planning before any SQL is resolved.

Common situations: Frontend dropdown defaulting to '' and sent through; a newer client sending a format the server build does not recognize; test fixtures using a numeric/string value that does not round-trip through the enum.

Related errors

• sql
• Unsupported provider:
• request.required
• largeCellValue.tokenRequired
• file.type.unsupported

AI-assisted analysis of OtterMind/Chat2DB@5ee1e990e7 (2026-08-14). Data as JSON: /api/errors/aac08b73d8d12a87. Report an issue: GitHub.