rahil-c commented on code in PR #11180: URL: https://github.com/apache/iceberg/pull/11180#discussion_r1857361617
########## core/src/main/java/org/apache/iceberg/rest/requests/PlanTableScanRequestParser.java: ########## @@ -0,0 +1,142 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.iceberg.rest.requests; + +import com.fasterxml.jackson.core.JsonGenerator; +import com.fasterxml.jackson.databind.JsonNode; +import java.io.IOException; +import java.util.List; +import org.apache.iceberg.expressions.Expression; +import org.apache.iceberg.expressions.ExpressionParser; +import org.apache.iceberg.relocated.com.google.common.base.Preconditions; +import org.apache.iceberg.util.JsonUtil; + +public class PlanTableScanRequestParser { + private static final String SNAPSHOT_ID = "snapshot-id"; + private static final String SELECT = "select"; + private static final String FILTER = "filter"; + private static final String CASE_SENSITIVE = "case-sensitive"; + private static final String USE_SNAPSHOT_SCHEMA = "use-snapshot-schema"; + private static final String START_SNAPSHOT_ID = "start-snapshot-id"; + private static final String END_SNAPSHOT_ID = "end-snapshot-id"; + private static final String STATS_FIELDS = "stats-fields"; + + private PlanTableScanRequestParser() {} + + public static String toJson(PlanTableScanRequest request) { + return toJson(request, false); + } + + public static String toJson(PlanTableScanRequest request, boolean pretty) { + return JsonUtil.generate(gen -> toJson(request, gen), pretty); + } + + @SuppressWarnings("checkstyle:CyclomaticComplexity") + public static void toJson(PlanTableScanRequest request, JsonGenerator gen) throws IOException { + Preconditions.checkArgument(null != request, "Invalid request: planTableScanRequest null"); + + if (request.snapshotId() != null + || request.startSnapshotId() != null + || request.endSnapshotId() != null) { + Preconditions.checkArgument( + request.snapshotId() != null + ^ (request.startSnapshotId() != null && request.endSnapshotId() != null), + "Either snapshotId must be provided or both startSnapshotId and endSnapshotId must be provided"); + } + + gen.writeStartObject(); + if (request.snapshotId() != null) { + gen.writeNumberField(SNAPSHOT_ID, request.snapshotId()); + } + + if (request.startSnapshotId() != null) { + gen.writeNumberField(START_SNAPSHOT_ID, request.startSnapshotId()); + } + + if (request.endSnapshotId() != null) { + gen.writeNumberField(END_SNAPSHOT_ID, request.endSnapshotId()); + } + + if (request.select() != null && !request.select().isEmpty()) { + JsonUtil.writeStringArray(SELECT, request.select(), gen); + } + + if (request.filter() != null) { + gen.writeStringField(FILTER, ExpressionParser.toJson(request.filter())); + } + + gen.writeBooleanField(CASE_SENSITIVE, request.caseSensitive()); + gen.writeBooleanField(USE_SNAPSHOT_SCHEMA, request.useSnapshotSchema()); + + if (request.statsFields() != null && !request.statsFields().isEmpty()) { + JsonUtil.writeStringArray(STATS_FIELDS, request.statsFields(), gen); + } + + gen.writeEndObject(); + } + + public static PlanTableScanRequest fromJson(String json) { + return JsonUtil.parse(json, PlanTableScanRequestParser::fromJson); + } + + public static PlanTableScanRequest fromJson(JsonNode json) { + Preconditions.checkArgument(null != json, "Invalid request: planTableScanRequest null"); + + Long snapshotId = JsonUtil.getLongOrNull(SNAPSHOT_ID, json); + Long startSnapshotId = JsonUtil.getLongOrNull(START_SNAPSHOT_ID, json); + Long endSnapshotId = JsonUtil.getLongOrNull(END_SNAPSHOT_ID, json); + + if (snapshotId != null || startSnapshotId != null || endSnapshotId != null) { Review Comment: will fix -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For additional commands, e-mail: issues-h...@iceberg.apache.org
