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range_scan.rb
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range_scan.rb
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# Copyright 2023. Couchbase, Inc.
#
# Licensed 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.
require 'couchbase'
include Couchbase # rubocop:disable Style/MixinUsage for brevity
options = Cluster::ClusterOptions.new
options.authenticate("Administrator", "password")
cluster = Cluster.connect("couchbase://localhost", options)
bucket = cluster.bucket("travel-sample")
collection = bucket.scope("inventory").collection("airline")
options = Options::Scan.new(ids_only: false)
puts "Range Scan (from 'airline_1' to 'airline_11')"
scan_type = RangeScan.new(
from: ScanTerm.new("airline_1"),
to: ScanTerm.new("airline_11", exclusive: true)
)
res = collection.scan(scan_type, options)
res.each do |item|
puts " (#{item.id}) #{item.content['icao']}: #{item.content['name']}"
end
puts "\nPrefix Scan (with prefix 'airline_8')"
scan_type = PrefixScan.new("airline_8")
res = collection.scan(scan_type, options)
res.each do |item|
puts " (#{item.id}) #{item.content['icao']}: #{item.content['name']}"
end
puts "\nSampling Scan (with limit 5)"
scan_type = SamplingScan.new(5)
res = collection.scan(scan_type, options)
res.each do |item|
puts " (#{item.id}) #{item.content['icao']}: #{item.content['name']}"
end