{"record":{"id":"c6e13542e5969c5a","repo":"alibaba/DataX","slug":"100","errorCode":"-100","errorMessage":"ADS JDBC connection URL was not set.","messagePattern":"ADS JDBC connection URL was not set\\.","errorType":"error_code","errorClass":"AdsException","httpStatus":null,"severity":"error","filePath":"adswriter/src/main/java/com/alibaba/datax/plugin/writer/adswriter/load/AdsHelper.java","lineNumber":93,"sourceCode":"    public void setSchema(String schema) {\n        this.schema = schema;\n    }\n\n    /**\n     * Obtain the table meta information.\n     * \n     * @param table The table\n     * @return The table meta information\n     * @throws com.alibaba.datax.plugin.writer.adswriter.AdsException\n     */\n    public TableInfo getTableInfo(String table) throws AdsException {\n\n        if (table == null) {\n            throw new AdsException(AdsException.ADS_TABLEMETA_TABLE_NULL, \"Table is null.\", null);\n        }\n\n        if (adsURL == null) {\n            throw new AdsException(AdsException.ADS_CONN_URL_NOT_SET, \"ADS JDBC connection URL was not set.\", null);\n        }\n\n        if (userName == null) {\n            throw new AdsException(AdsException.ADS_CONN_USERNAME_NOT_SET,\n                    \"ADS JDBC connection user name was not set.\", null);\n        }\n\n        if (password == null) {\n            throw new AdsException(AdsException.ADS_CONN_PASSWORD_NOT_SET, \"ADS JDBC connection password was not set.\",\n                    null);\n        }\n\n        if (schema == null) {\n            throw new AdsException(AdsException.ADS_CONN_SCHEMA_NOT_SET, \"ADS JDBC connection schema was not set.\",\n                    null);\n        }\n\n        Connection connection = null;","sourceCodeStart":75,"sourceCodeEnd":111,"githubUrl":"https://github.com/alibaba/DataX/blob/80ec23d5c5328eb90ca364d2749e92dfaf44541e/adswriter/src/main/java/com/alibaba/datax/plugin/writer/adswriter/load/AdsHelper.java#L75-L111","documentation":"Second guard in getTableInfo: AdsHelper.adsURL must be set before querying metadata; null adsURL raises AdsException code -100 (ADS_CONN_URL_NOT_SET). It indicates the ADS JDBC endpoint was never configured on the helper.","triggerScenarios":"Invoking getTableInfo on an AdsHelper whose adsURL field was never assigned - in the DataX job this maps to a missing/misspelled 'url' key in the adswriter parameter block.","commonSituations":"Job JSON omits url, uses 'jdbcUrl' instead of 'url', or config is nested under the wrong reader/writer block.","solutions":["Set the 'url' key in the adswriter parameter to the ADS JDBC endpoint (e.g. jdbc:mysql://ads-host:3306/db).","Check the key name against the plugin's Key constants for your version.","If constructing AdsHelper programmatically, call the URL setter before getTableInfo."],"exampleFix":"// before\n{\"parameter\":{\"table\":\"t\",\"username\":\"u\"}}\n// after\n{\"parameter\":{\"url\":\"jdbc:mysql://ads-xxx.ads.aliyuncs.com:3306/mydb\",\"table\":\"t\",\"username\":\"u\"}}","handlingStrategy":"validation","validationCode":"if (config.getString(\"url\") == null) {\n    throw new IllegalStateException(\"adswriter 'url' key is required\");\n}","typeGuard":"boolean isAdsUrlSet(String url) { return url != null && url.startsWith(\"jdbc:\"); }","tryCatchPattern":"try {\n    return helper.getTableInfo(table);\n} catch (AdsException e) {\n    if (e.getCode() == AdsException.ADS_CONN_URL_NOT_SET) {\n        throw new IllegalStateException(\"job config: ADS 'url' missing\", e);\n    }\n    throw e;\n}","preventionTips":["Template job JSONs with a required-fields checklist: url, username, password, schema, table.","Reject empty string as well as null when validating config (blank URL fails later at JDBC anyway).","Keep the ADS endpoint in one config variable reused by all phases."],"tags":["adswriter","config","connection","validation"],"backgroundTag":null,"analyzedSha":"80ec23d5c5328eb90ca364d2749e92dfaf44541e","analyzedAt":"2026-08-14T15:33:51.187Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}