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Address sorting for Parquet metadata and persistent data indexes (dee…
…phaven#5423) * Sort Parquet persistent index tables before writing them * Correct Parquet metadata (TableInfo) for sort columns; address missing documentation and incorrect serialization * Populate TableInfo.sortingColumns() for primary tables and index tables
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...sions/parquet/table/src/main/java/io/deephaven/parquet/table/metadata/SortColumnInfo.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| // | ||
| // Copyright (c) 2016-2024 Deephaven Data Labs and Patent Pending | ||
| // | ||
| package io.deephaven.parquet.table.metadata; | ||
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| import com.fasterxml.jackson.annotation.JsonInclude; | ||
| import com.fasterxml.jackson.databind.annotation.JsonDeserialize; | ||
| import com.fasterxml.jackson.databind.annotation.JsonSerialize; | ||
| import io.deephaven.annotations.SimpleStyle; | ||
| import io.deephaven.api.ColumnName; | ||
| import io.deephaven.api.SortColumn; | ||
| import org.immutables.value.Value.Check; | ||
| import org.immutables.value.Value.Immutable; | ||
| import org.immutables.value.Value.Parameter; | ||
| import org.jetbrains.annotations.NotNull; | ||
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|
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| import java.util.List; | ||
| import java.util.stream.Collectors; | ||
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| @Immutable | ||
| @SimpleStyle | ||
| @JsonSerialize(as = ImmutableSortColumnInfo.class) | ||
| @JsonDeserialize(as = ImmutableSortColumnInfo.class) | ||
| @JsonInclude(JsonInclude.Include.NON_EMPTY) | ||
| public abstract class SortColumnInfo { | ||
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| public enum SortDirection { | ||
| Ascending, Descending | ||
| } | ||
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| @Parameter | ||
| public abstract String columnName(); | ||
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| @Parameter | ||
| public abstract SortDirection sortDirection(); | ||
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| @Check | ||
| final void checkColumnName() { | ||
| ColumnName.of(columnName()); | ||
| } | ||
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| public final SortColumn sortColumn() { | ||
| return sortDirection() == SortDirection.Ascending | ||
| ? SortColumn.asc(ColumnName.of(columnName())) | ||
| : SortColumn.desc(ColumnName.of(columnName())); | ||
| } | ||
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| public static List<SortColumn> sortColumns(@NotNull final List<SortColumnInfo> sortColumnInfos) { | ||
| return sortColumnInfos.stream().map(SortColumnInfo::sortColumn).collect(Collectors.toList()); | ||
| } | ||
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| public static SortColumnInfo of(@NotNull final SortColumn sortColumn) { | ||
| return of(sortColumn.column().name(), sortColumn.order() == SortColumn.Order.ASCENDING | ||
| ? SortDirection.Ascending | ||
| : SortDirection.Descending); | ||
| } | ||
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| public static SortColumnInfo of(@NotNull final String columnName, @NotNull final SortDirection sortDirection) { | ||
| return ImmutableSortColumnInfo.of(columnName, sortDirection); | ||
| } | ||
| } |
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