Class: Rokaki::FilterModel::BasicFilter

Inherits:
Object
  • Object
show all
Defined in:
lib/rokaki/filter_model/basic_filter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(keys:, prefix:, infix:, like_semantics:, i_like_semantics:, db:, between_keys: nil, min_keys: nil, max_keys: nil) ⇒ BasicFilter

Returns a new instance of BasicFilter.



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 6

def initialize(keys:, prefix:, infix:, like_semantics:, i_like_semantics:, db:, between_keys: nil, min_keys: nil, max_keys: nil)
  @keys = keys
  @prefix = prefix
  @infix = infix
  @like_semantics = like_semantics
  @i_like_semantics = i_like_semantics
  @db = db
  @between_keys = Array(between_keys).compact
  @min_keys = Array(min_keys).compact
  @max_keys = Array(max_keys).compact
  @filter_query = nil
end

Instance Attribute Details

#db ⇒ Object (readonly)

Returns the value of attribute db.



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 18

def db
  @db
end

#filter_method ⇒ Object

Returns the value of attribute filter_method.



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 19

def filter_method
  @filter_method
end

#filter_query ⇒ Object (readonly)

Returns the value of attribute filter_query.



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 18

def filter_query
  @filter_query
end

#filter_template ⇒ Object

Returns the value of attribute filter_template.



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 19

def filter_template
  @filter_template
end

#i_like_semantics ⇒ Object (readonly)

Returns the value of attribute i_like_semantics.



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 18

def i_like_semantics
  @i_like_semantics
end

#infix ⇒ Object (readonly)

Returns the value of attribute infix.



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 18

def infix
  @infix
end

#keys ⇒ Object (readonly)

Returns the value of attribute keys.



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 18

def keys
  @keys
end

#like_semantics ⇒ Object (readonly)

Returns the value of attribute like_semantics.



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 18

def like_semantics
  @like_semantics
end

#prefix ⇒ Object (readonly)

Returns the value of attribute prefix.



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 18

def prefix
  @prefix
end

Instance Method Details

#_chain_filter_type(key) ⇒ Object 



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 68

def _chain_filter_type(key)
  filter = "#{prefix}#{key}"
  query  = ''

  if like_semantics && mode = like_semantics[key]
    query = build_like_query(
      type: case_sensitive,
      query: query,
      filter: filter,
      mode: mode,
      key: key
    )
  elsif i_like_semantics && mode = i_like_semantics[key]
    query = build_like_query(
      type: case_insensitive,
      query: query,
      filter: filter,
      mode: mode,
      key: key
    )
  else
    # New preferred style: field => { between:/from:/to:/min:/max: }
    # Also accept direct Range/Array/Hash with from/to aliases.
    query = <<-RUBY
      begin
        _val = #{filter}
        if _val.is_a?(Hash)
          # Support wrapper keys like :between as well as bound aliases/min/max
          _inner = _val
          if _val.key?(:between) || _val.key?('between')
            _inner = _val[:between] || _val['between']
          end
          _from = _inner[:from] || _inner['from'] || _inner[:since] || _inner['since'] || _inner[:after] || _inner['after'] || _inner[:start] || _inner['start'] || _inner[:min] || _inner['min']
          _to   = _inner[:to]   || _inner['to']   || _inner[:until] || _inner['until'] || _inner[:before] || _inner['before'] || _inner[:end]   || _inner['end']   || _inner[:max] || _inner['max']

          if _from.nil? && _to.nil?
            # If hash contains range-like but with different container (e.g., { between: range })
            if _inner.is_a?(Range)
              _from = _inner.begin; _to = _inner.end
            elsif _inner.is_a?(Array)
              _from, _to = _inner[0], _inner[1]
            end
          end

          # Adjust inclusive end-of-day behavior if upper bound appears to be a date or midnight time
          if !_to.nil? && (_to.is_a?(Date) && !_to.is_a?(DateTime) || (_to.respond_to?(:hour) && _to.hour == 0 && _to.min == 0 && _to.sec == 0))
            _to = (_to.respond_to?(:to_time) ? _to.to_time : _to) + 86399
          end
          if !_from.nil? && !_to.nil?
            @model.where("#{key} BETWEEN :from AND :to", from: _from, to: _to)
          elsif !_from.nil?
            @model.where("#{key} >= :from", from: _from)
          elsif !_to.nil?
            @model.where("#{key} <= :to", to: _to)
          else
            # Inequality/nullability operators
            _op_neq         = _val[:neq] || _val['neq']
            _op_not_in      = _val[:not_in] || _val['not_in']
            _op_is_null     = _val[:is_null] || _val['is_null']
            _op_is_not_null = _val[:is_not_null] || _val['is_not_null']
            _op_gt          = _val[:gt] || _val['gt']
            _op_gte         = _val[:gte] || _val['gte']
            _op_lt          = _val[:lt] || _val['lt']
            _op_lte         = _val[:lte] || _val['lte']

            if !_op_neq.nil?
              @model.where("#{key} <> :v", v: _op_neq)
            elsif _op_not_in
              _arr = Array(_op_not_in)
              return @model.none if _arr.empty?
              @model.where("#{key} NOT IN (?)", _arr)
            elsif _op_is_null == true
              @model.where("#{key} IS NULL")
            elsif _op_is_not_null == true || _op_is_null == false
              @model.where("#{key} IS NOT NULL")
            elsif !_op_gt.nil?
              @model.where("#{key} > :v", v: _op_gt)
            elsif !_op_gte.nil?
              @model.where("#{key} >= :v", v: _op_gte)
            elsif !_op_lt.nil?
              @model.where("#{key} < :v", v: _op_lt)
            elsif !_op_lte.nil?
              @model.where("#{key} <= :v", v: _op_lte)
            else
              # Fall back to equality with the original hash
              @model.where(#{key}: _val)
            end
          end
        elsif _val.is_a?(Range)
          #{build_between_query(filter: filter, key: key)}
        else
          # Equality and IN semantics for arrays and scalars (Arrays are always IN lists)
          @model.where(#{key}: _val)
        end
      end
    RUBY
  end

  @filter_query = query
end

#build_between_query(filter:, key:) ⇒ Object 



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 169

def build_between_query(filter:, key:)
  # Accept [from, to], Range, or {from:, to:}
  # Build appropriate where conditions with bound params
  <<-RUBY
    begin
      _val = #{filter}
      _from = _to = nil
      if _val.is_a?(Range)
        _from = _val.begin
        _to = _val.end
      elsif _val.is_a?(Array)
        _from, _to = _val[0], _val[1]
      elsif _val.is_a?(Hash)
        # allow aliases for from/to
        _from = _val[:from] || _val['from'] || _val[:since] || _val['since'] || _val[:after] || _val['after'] || _val[:start] || _val['start']
        _to   = _val[:to]   || _val['to']   || _val[:until] || _val['until'] || _val[:before] || _val['before'] || _val[:end]   || _val['end']
      else
        # single value → equality
        return @model.where(#{key}: _val)
      end

      if !_from.nil? && !_to.nil?
        @model.where("#{key} BETWEEN :from AND :to", from: _from, to: _to)
      elsif !_from.nil?
        @model.where("#{key} >= :from", from: _from)
      elsif !_to.nil?
        @model.where("#{key} <= :to", to: _to)
      else
        @model
      end
    end
  RUBY
end

#build_compare_query(op:, filter:, column:) ⇒ Object 



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 222

def build_compare_query(op:, filter:, column:)
  operator = (op == :'>=') ? '>=' : '<='
  %Q{@model.where("#{column} #{operator} :v", v: #{filter})}
end

#build_like_query(type:, query:, filter:, mode:, key:) ⇒ Object

@model.where('authors.first_name LIKE BINARY :query', query: "%teev%").or(@model.where('authors.first_name LIKE BINARY :query', query: "%imi%"))

if Array == filter first_term = filter.unshift query = "@model.where("#key #type ANY (ARRAY)", " query += "prepare_terms(#first_term, :#mode))" filter.each { |term| query += ".or(@model.where("#key #type ANY (ARRAY)", " query += "prepare_terms(#first_term, :#mode)))" } else query = "@model.where("#{ |item| "`#{item`" }.join(".")} #Rokaki::FilterModel::BasicFilter.typetype.to_stype.to_s.upcase :query", " query += "query: prepare_terms(#filter, "#Rokaki::FilterModel::BasicFilter.typetype.to_stype.to_s.upcase", :#search_mode))" end



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 241

def build_like_query(type:, query:, filter:, mode:, key:)
  if db == :postgres
    query = "@model.where(\"#{key} #{type} ANY (ARRAY[?])\", "
    query += "prepare_terms(#{filter}, :#{mode}))"
  elsif db == :sqlserver
    # Delegate to helper that supports arrays and escaping with ESCAPE
    query = "sqlserver_like(@model, \"#{key}\", \"#{type}\", #{filter}, :#{mode})"
  elsif db == :oracle
    # Oracle helper handles case-insensitive via UPPER() when type is 'ILIKE'
    query = "oracle_like(@model, \"#{key}\", \"#{type}\", #{filter}, :#{mode})"
  else
    query = "@model.where(\"#{key} #{type} :query\", "
    query += "query: \"%\#{#{filter}}%\")" if mode == :circumfix
    query += "query: \"%\#{#{filter}}\")" if mode == :prefix
    query += "query: \"\#{#{filter}}%\")" if mode == :suffix
  end

  query
end

#call ⇒ Object 



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 21

def call
  first_key = keys.shift
  filter = "#{prefix}#{first_key}"
  name = first_key

  keys.each do |key|
    filter += "#{infix}#{key}"
    name += "#{infix}#{key}"
  end

  @filter_method = "def #{prefix}filter_#{name};" \
    "#{_chain_filter_type(name)} end;"

  # class_eval filter_method, __FILE__, __LINE__ - 2

  @filter_template = "@model = #{prefix}filter_#{name} if #{filter};"
end

#case_insensitive ⇒ Object 



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 53

def case_insensitive
  if db == :postgres
    'ILIKE'
  elsif db == :mysql
    'LIKE'
  elsif db == :sqlserver
    'LIKE'
  elsif db == :oracle
    # Use 'ILIKE' as a signal; oracle_like will translate to UPPER(column) LIKE UPPER(:q)
    'ILIKE'
  else
    'LIKE'
  end
end

#case_sensitive ⇒ Object 



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 39

def case_sensitive
  if db == :postgres
    'LIKE'
  elsif db == :mysql
    'LIKE BINARY'
  elsif db == :sqlserver
    'LIKE'
  elsif db == :oracle
    'LIKE'
  else
    'LIKE'
  end
end

#parse_range_semantics(key) ⇒ Object 



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# File 'lib/rokaki/filter_model/basic_filter.rb', line 203

def parse_range_semantics(key)
  k = key.to_s
  %w[_between _min _max _from _to _after _before _since _until _start _end].each do |suf|
    if k.end_with?(suf)
      base = k.sub(/#{Regexp.escape(suf)}\z/, '')
      op = case suf
           when '_between' then :between
           when '_min' then :min
           when '_max' then :max
           when '_from','_after','_since','_start' then :from
           when '_to','_before','_until','_end' then :to
           else nil
           end
      return [base, op]
    end
  end
  [nil, nil]
end