| /* |
| * 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.cassandra.db; |
| |
| import org.apache.cassandra.db.filter.ColumnFilter; |
| import org.apache.cassandra.db.filter.DataLimits; |
| import org.apache.cassandra.db.filter.RowFilter; |
| import org.apache.cassandra.schema.TableMetadata; |
| import org.apache.cassandra.service.pager.PagingState; |
| import org.apache.cassandra.service.pager.PartitionRangeQueryPager; |
| import org.apache.cassandra.service.pager.QueryPager; |
| import org.apache.cassandra.transport.ProtocolVersion; |
| |
| /** |
| * A {@code ReadQuery} for a range of partitions. |
| */ |
| public interface PartitionRangeReadQuery extends ReadQuery |
| { |
| static ReadQuery create(TableMetadata table, |
| long nowInSec, |
| ColumnFilter columnFilter, |
| RowFilter rowFilter, |
| DataLimits limits, |
| DataRange dataRange) |
| { |
| return PartitionRangeReadCommand.create(table, nowInSec, columnFilter, rowFilter, limits, dataRange); |
| } |
| |
| DataRange dataRange(); |
| |
| /** |
| * Creates a new {@code PartitionRangeReadQuery} with the updated limits. |
| * |
| * @param newLimits the new limits |
| * @return the new {@code PartitionRangeReadQuery} |
| */ |
| PartitionRangeReadQuery withUpdatedLimit(DataLimits newLimits); |
| |
| /** |
| * Creates a new {@code PartitionRangeReadQuery} with the updated limits and data range. |
| * |
| * @param newLimits the new limits |
| * @return the new {@code PartitionRangeReadQuery} |
| */ |
| PartitionRangeReadQuery withUpdatedLimitsAndDataRange(DataLimits newLimits, DataRange newDataRange); |
| |
| default QueryPager getPager(PagingState pagingState, ProtocolVersion protocolVersion) |
| { |
| return new PartitionRangeQueryPager(this, pagingState, protocolVersion); |
| } |
| |
| default boolean selectsKey(DecoratedKey key) |
| { |
| if (!dataRange().contains(key)) |
| return false; |
| |
| return rowFilter().partitionKeyRestrictionsAreSatisfiedBy(key, metadata().partitionKeyType); |
| } |
| |
| default boolean selectsClustering(DecoratedKey key, Clustering<?> clustering) |
| { |
| if (clustering == Clustering.STATIC_CLUSTERING) |
| return !columnFilter().fetchedColumns().statics.isEmpty(); |
| |
| if (!dataRange().clusteringIndexFilter(key).selects(clustering)) |
| return false; |
| return rowFilter().clusteringKeyRestrictionsAreSatisfiedBy(clustering); |
| } |
| |
| default boolean selectsFullPartition() |
| { |
| if (metadata().isStaticCompactTable()) |
| return true; |
| |
| return dataRange().selectsAllPartition() && !rowFilter().hasExpressionOnClusteringOrRegularColumns(); |
| } |
| } |