Examples with SchemaValidator org.apache.flink.table.descriptors.SchemaValidator used on opensource projects

Example 1 with SchemaValidator

use of org.apache.flink.table.descriptors.SchemaValidator in project flink by apache.

the class CsvTableSinkFactoryBase method createTableSink.

protected CsvTableSink createTableSink(Boolean isStreaming, Map<String, String> properties) {
    DescriptorProperties params = new DescriptorProperties();
    params.putProperties(properties);
    // validate
    new FileSystemValidator().validate(params);
    new OldCsvValidator().validate(params);
    new SchemaValidator(isStreaming, false, false).validate(params);
    // build
    TableSchema tableSchema = TableSchemaUtils.getPhysicalSchema(params.getTableSchema(SCHEMA));
    // if a schema is defined, no matter derive schema is set or not, will use the defined
    // schema
    final boolean hasSchema = params.hasPrefix(FORMAT_FIELDS);
    if (hasSchema) {
        TableSchema formatSchema = params.getTableSchema(FORMAT_FIELDS);
        if (!getFieldLogicalTypes(formatSchema).equals(getFieldLogicalTypes(tableSchema))) {
            throw new TableException(String.format("Encodings that differ from the schema are not supported yet for" + " CsvTableSink, format schema is '%s', but table schema is '%s'.", formatSchema, tableSchema));
        }
    }
    String path = params.getString(CONNECTOR_PATH);
    String fieldDelimiter = params.getOptionalString(FORMAT_FIELD_DELIMITER).orElse(",");
    Optional<String> writeModeParam = params.getOptionalString(FORMAT_WRITE_MODE);
    FileSystem.WriteMode writeMode = (writeModeParam.isPresent()) ? FileSystem.WriteMode.valueOf(writeModeParam.get()) : null;
    int numFiles = params.getOptionalInt(FORMAT_NUM_FILES).orElse(-1);
    // bridge to java.sql.Timestamp/Time/Date
    DataType[] dataTypes = Arrays.stream(tableSchema.getFieldDataTypes()).map(dt -> {
        switch(dt.getLogicalType().getTypeRoot()) {
            case TIMESTAMP_WITHOUT_TIME_ZONE:
                return dt.bridgedTo(Timestamp.class);
            case TIME_WITHOUT_TIME_ZONE:
                return dt.bridgedTo(Time.class);
            case DATE:
                return dt.bridgedTo(Date.class);
            default:
                return dt;
        }
    }).toArray(DataType[]::new);
    return new CsvTableSink(path, fieldDelimiter, numFiles, writeMode, tableSchema.getFieldNames(), dataTypes);
}

Example 2 with SchemaValidator

use of org.apache.flink.table.descriptors.SchemaValidator in project flink by apache.

the class CsvTableSourceFactoryBase method createTableSource.

protected CsvTableSource createTableSource(Boolean isStreaming, Map<String, String> properties) {
    DescriptorProperties params = new DescriptorProperties();
    params.putProperties(properties);
    // validate
    new FileSystemValidator().validate(params);
    new OldCsvValidator().validate(params);
    new SchemaValidator(isStreaming, false, false).validate(params);
    // build
    CsvTableSource.Builder csvTableSourceBuilder = new CsvTableSource.Builder();
    TableSchema tableSchema = TableSchemaUtils.getPhysicalSchema(params.getTableSchema(SCHEMA));
    // if a schema is defined, no matter derive schema is set or not, will use the defined
    // schema
    final boolean hasSchema = params.hasPrefix(FORMAT_FIELDS);
    if (hasSchema) {
        TableSchema formatSchema = params.getTableSchema(FORMAT_FIELDS);
        // Ignore conversion classes in DataType
        if (!getFieldLogicalTypes(formatSchema).equals(getFieldLogicalTypes(tableSchema))) {
            throw new TableException(String.format("Encodings that differ from the schema are not supported yet for" + " CsvTableSource, format schema is '%s', but table schema is '%s'.", formatSchema, tableSchema));
        }
    }
    params.getOptionalString(CONNECTOR_PATH).ifPresent(csvTableSourceBuilder::path);
    params.getOptionalString(FORMAT_FIELD_DELIMITER).ifPresent(csvTableSourceBuilder::fieldDelimiter);
    params.getOptionalString(FORMAT_LINE_DELIMITER).ifPresent(csvTableSourceBuilder::lineDelimiter);
    for (int i = 0; i < tableSchema.getFieldCount(); ++i) {
        csvTableSourceBuilder.field(tableSchema.getFieldNames()[i], tableSchema.getFieldDataTypes()[i]);
    }
    params.getOptionalCharacter(FORMAT_QUOTE_CHARACTER).ifPresent(csvTableSourceBuilder::quoteCharacter);
    params.getOptionalString(FORMAT_COMMENT_PREFIX).ifPresent(csvTableSourceBuilder::commentPrefix);
    params.getOptionalBoolean(FORMAT_IGNORE_FIRST_LINE).ifPresent(flag -> {
        if (flag) {
            csvTableSourceBuilder.ignoreFirstLine();
        }
    });
    params.getOptionalBoolean(FORMAT_IGNORE_PARSE_ERRORS).ifPresent(flag -> {
        if (flag) {
            csvTableSourceBuilder.ignoreParseErrors();
        }
    });
    return csvTableSourceBuilder.build();
}