Examples with MergingStrategy org.apache.flink.sql.parser.ddl.SqlTableLike.MergingStrategy used on opensource projects

Example 11 with MergingStrategy

use of org.apache.flink.sql.parser.ddl.SqlTableLike.MergingStrategy in project flink by apache.

the class MergeTableLikeUtilTest method mergeOverwritingMetadataColumnsDuplicate.

@Test
public void mergeOverwritingMetadataColumnsDuplicate() {
    TableSchema sourceSchema = TableSchema.builder().add(TableColumn.physical("one", DataTypes.INT())).add(TableColumn.metadata("two", DataTypes.INT())).build();
    List<SqlNode> derivedColumns = Collections.singletonList(metadataColumn("two", DataTypes.BOOLEAN(), true));
    Map<FeatureOption, MergingStrategy> mergingStrategies = getDefaultMergingStrategies();
    mergingStrategies.put(FeatureOption.METADATA, MergingStrategy.OVERWRITING);
    TableSchema mergedSchema = util.mergeTables(mergingStrategies, sourceSchema, derivedColumns, Collections.emptyList(), null);
    TableSchema expectedSchema = TableSchema.builder().add(TableColumn.physical("one", DataTypes.INT())).add(TableColumn.metadata("two", DataTypes.BOOLEAN(), true)).build();
    assertThat(mergedSchema, equalTo(expectedSchema));
}

Example 12 with MergingStrategy

use of org.apache.flink.sql.parser.ddl.SqlTableLike.MergingStrategy in project flink by apache.

the class MergeTableLikeUtilTest method mergeOverwritingGeneratedColumnsDuplicate.

@Test
public void mergeOverwritingGeneratedColumnsDuplicate() {
    TableSchema sourceSchema = TableSchema.builder().add(TableColumn.physical("one", DataTypes.INT())).add(TableColumn.computed("two", DataTypes.INT(), "one + 1")).build();
    List<SqlNode> derivedColumns = Collections.singletonList(computedColumn("two", plus("one", "3")));
    Map<FeatureOption, MergingStrategy> mergingStrategies = getDefaultMergingStrategies();
    mergingStrategies.put(FeatureOption.GENERATED, MergingStrategy.OVERWRITING);
    TableSchema mergedSchema = util.mergeTables(mergingStrategies, sourceSchema, derivedColumns, Collections.emptyList(), null);
    TableSchema expectedSchema = TableSchema.builder().add(TableColumn.physical("one", DataTypes.INT())).add(TableColumn.computed("two", DataTypes.INT(), "`one` + 3")).build();
    assertThat(mergedSchema, equalTo(expectedSchema));
}

Example 13 with MergingStrategy

use of org.apache.flink.sql.parser.ddl.SqlTableLike.MergingStrategy in project flink by apache.

the class MergeTableLikeUtil method computeMergingStrategies.

/**
 * Calculates merging strategies for all options. It applies options given by a user to the
 * {@link #defaultMergingStrategies}. The {@link MergingStrategy} specified for {@link
 * FeatureOption#ALL} overwrites all the default options. Those can be further changed with a
 * specific {@link FeatureOption}.
 */
public Map<FeatureOption, MergingStrategy> computeMergingStrategies(List<SqlTableLike.SqlTableLikeOption> mergingOptions) {
    Map<FeatureOption, MergingStrategy> result = new HashMap<>(defaultMergingStrategies);
    Optional<SqlTableLike.SqlTableLikeOption> maybeAllOption = mergingOptions.stream().filter(option -> option.getFeatureOption() == FeatureOption.ALL).findFirst();
    maybeAllOption.ifPresent((allOption) -> {
        MergingStrategy strategy = allOption.getMergingStrategy();
        for (FeatureOption featureOption : FeatureOption.values()) {
            if (featureOption != FeatureOption.ALL) {
                result.put(featureOption, strategy);
            }
        }
    });
    for (SqlTableLike.SqlTableLikeOption mergingOption : mergingOptions) {
        result.put(mergingOption.getFeatureOption(), mergingOption.getMergingStrategy());
    }
    return result;
}