From 670cd279ea7789e07b6d778a21fdec68347ab305 Mon Sep 17 00:00:00 2001 From: Fabian Mastenbroek Date: Mon, 2 May 2022 14:17:55 +0200 Subject: feat(trace/api): Add support for projecting tables This change adds support for projecting certain columns of a table. This enables faster reading for tables with high number of columns. Currently, we support projection in the Parquet-based workload formats. Other formats are text-based and will probably not benefit much from projection. --- .../main/kotlin/org/opendc/trace/bitbrains/BitbrainsExTraceFormat.kt | 2 +- .../src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsTraceFormat.kt | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'opendc-trace/opendc-trace-bitbrains/src/main') diff --git a/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsExTraceFormat.kt b/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsExTraceFormat.kt index 11d21a04..82e454ad 100644 --- a/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsExTraceFormat.kt +++ b/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsExTraceFormat.kt @@ -72,7 +72,7 @@ public class BitbrainsExTraceFormat : TraceFormat { } } - override fun newReader(path: Path, table: String): TableReader { + override fun newReader(path: Path, table: String, projection: List>?): TableReader { return when (table) { TABLE_RESOURCE_STATES -> newResourceStateReader(path) else -> throw IllegalArgumentException("Table $table not supported") diff --git a/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsTraceFormat.kt b/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsTraceFormat.kt index e1e7604a..a374e951 100644 --- a/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsTraceFormat.kt +++ b/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsTraceFormat.kt @@ -81,7 +81,7 @@ public class BitbrainsTraceFormat : TraceFormat { } } - override fun newReader(path: Path, table: String): TableReader { + override fun newReader(path: Path, table: String, projection: List>?): TableReader { return when (table) { TABLE_RESOURCES -> { val vms = Files.walk(path, 1) -- cgit v1.2.3