Class: Libcouchbase::ResultsNative

Inherits:
Results
  • Object
show all
Defined in:
lib/libcouchbase/results_native.rb

Instance Attribute Summary

Attributes inherited from Results

#complete_result_set, #metadata, #query_completed, #query_in_progress

Instance Method Summary collapse

Constructor Details

#initialize(query, &row_modifier) ⇒ ResultsNative

Returns a new instance of ResultsNative.



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# File 'lib/libcouchbase/results_native.rb', line 7

def initialize(query, &row_modifier)
    @query_in_progress = false
    @query_completed = false
    @complete_result_set = false

    @results = []

    # This could be a view or n1ql query
    @query = query
    @row_modifier = row_modifier
end

Instance Method Details

#cancel ⇒ Object 



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# File 'lib/libcouchbase/results_native.rb', line 126

def cancel
    return if @cancelled
    @cancelled = true
    @query.cancel
    process_next_item
end

#count ⇒ Object 



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# File 'lib/libcouchbase/results_native.rb', line 99

def count
    first unless @metadata
    @query.get_count @metadata
end

#each(&blk) ⇒ Object 



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# File 'lib/libcouchbase/results_native.rb', line 54

def each(&blk)
    # return a valid enumerator
    return load_all.each unless block_given?

    if @complete_result_set
        @results.each &blk
    else
        perform

        begin
            index = 0
            while !@query_completed || (cont = index < @results.length) do
                if cont
                    yield @results[index]
                    index += 1
                else
                    process_next_item
                end
            end
        ensure
            # cancel is executed on break or error
            cancel unless @query_completed
        end

        raise @error if @error
    end
    self
end

#first ⇒ Object 



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# File 'lib/libcouchbase/results_native.rb', line 83

def first
    if @complete_result_set || @results.length > 0
        @results[0]
    else
        perform is_complete: false, limit: 1

        while not @query_completed do
            process_next_item
        end
        raise @error if @error

        result = @results[0]
        result
    end
end

#options(**opts) ⇒ Object 



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# File 'lib/libcouchbase/results_native.rb', line 19

def options(**opts)
    reset
    @query.options.merge!(opts)
end

#reset ⇒ Object 



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# File 'lib/libcouchbase/results_native.rb', line 47

def reset
    raise 'query in progress' if @query_in_progress
    @query_in_progress = false
    @complete_result_set = false
    @results.clear
end

#stream(&blk) ⇒ Object 



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# File 'lib/libcouchbase/results_native.rb', line 24

def stream(&blk)
    if @complete_result_set
        @results.each &blk
    else
        perform is_complete: false
        begin
            while !@query_completed || (cont = @results.length > 0) do
                if cont
                    yield @results.shift
                else
                    process_next_item
                end
            end
        ensure
            # cancel is executed on break or error
            cancel unless @query_completed
        end

        raise @error if @error
    end
    self
end

#take(num) ⇒ Object 



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# File 'lib/libcouchbase/results_native.rb', line 104

def take(num)
    if @complete_result_set || @results.length >= num
        @results[0...num]
    else
        perform is_complete: false, limit: num

        index = 0
        result = []
        while !@query_completed || (cont = index < @results.length && index < num) do
            if cont
                result << @results[index]
                index += 1
            else
                process_next_item
            end
        end

        raise @error if @error
        result
    end
end