Examples with SEMANTIC org.talend.dataprep.quality.AnalyzerService.Analysis.SEMANTIC used on opensource projects

Example 1 with SEMANTIC

use of org.talend.dataprep.quality.AnalyzerService.Analysis.SEMANTIC in project data-prep by Talend.

the class TransformationService method getSemanticDomains.

/**
 * Return the semantic domains for the given parameters.
 *
 * @param metadata the dataset metadata.
 * @param columnId the column id to analyze.
 * @param records the dataset records.
 * @return the semantic domains for the given parameters.
 * @throws IOException can happen...
 */
private List<SemanticDomain> getSemanticDomains(DataSetMetadata metadata, String columnId, InputStream records) throws IOException {
    // copy the column metadata and set the semantic domain forced flag to false to make sure the statistics adapter set all
    // available domains
    final ColumnMetadata columnMetadata = // 
    column().copy(// 
    metadata.getRowMetadata().getById(columnId)).semanticDomainForce(// 
    false).build();
    final Analyzer<Analyzers.Result> analyzer = analyzerService.build(columnMetadata, SEMANTIC);
    analyzer.init();
    try (final JsonParser parser = mapper.getFactory().createParser(new InputStreamReader(records, UTF_8))) {
        final DataSet dataSet = mapper.readerFor(DataSet.class).readValue(parser);
        dataSet.getRecords().map(// 
        r -> r.get(columnId)).forEach(analyzer::analyze);
        analyzer.end();
    }
    final List<Analyzers.Result> analyzerResult = analyzer.getResult();
    statisticsAdapter.adapt(singletonList(columnMetadata), analyzerResult);
    return columnMetadata.getSemanticDomains();
}

Example 2 with SEMANTIC

use of org.talend.dataprep.quality.AnalyzerService.Analysis.SEMANTIC in project data-prep by Talend.

the class DataSetService method getDataSetColumnSemanticCategories.

/**
 * Return the semantic types for a given dataset / column.
 *
 * @param datasetId the datasetId id.
 * @param columnId the column id.
 * @return the semantic types for a given dataset / column.
 */
@RequestMapping(value = "/datasets/{datasetId}/columns/{columnId}/types", method = GET)
@ApiOperation(value = "list the types of the wanted column", notes = "This list can be used by user to change the column type.")
@Timed
@PublicAPI
public List<SemanticDomain> getDataSetColumnSemanticCategories(@ApiParam(value = "The dataset id") @PathVariable String datasetId, @ApiParam(value = "The column id") @PathVariable String columnId) {
    LOG.debug("listing semantic categories for dataset #{} column #{}", datasetId, columnId);
    final DataSetMetadata metadata = dataSetMetadataRepository.get(datasetId);
    if (metadata == null) {
        throw new TDPException(DataSetErrorCodes.DATASET_DOES_NOT_EXIST, ExceptionContext.withBuilder().put("id", datasetId).build());
    } else {
        try (final Stream<DataSetRow> records = contentStore.stream(metadata)) {
            final ColumnMetadata columnMetadata = metadata.getRowMetadata().getById(columnId);
            final Analyzer<Analyzers.Result> analyzer = analyzerService.build(columnMetadata, SEMANTIC);
            analyzer.init();
            records.map(r -> r.get(columnId)).forEach(analyzer::analyze);
            analyzer.end();
            final List<Analyzers.Result> analyzerResult = analyzer.getResult();
            final StatisticsAdapter statisticsAdapter = new StatisticsAdapter(40);
            statisticsAdapter.adapt(singletonList(columnMetadata), analyzerResult);
            LOG.debug("found {} for dataset #{}, column #{}", columnMetadata.getSemanticDomains(), datasetId, columnId);
            return columnMetadata.getSemanticDomains();
        }
    }
}