replace more references to Report namespace with 'engine' method call

app/models/report/filter/base.rb

@@ -1,6 +1,8 @@
 class Report::Filter
   class Base < Report::Chainable
-    Report::Operator.load
+    include Report::CostQuery
+
+    engine::Operator.load
 
     inherited_attribute   :available_operators,
                             :list => true, :map => :to_operator,
@@ -30,8 +32,8 @@ class Report::Filter
       names.each do |name|
         dont_inherit :available_operators if skip_inherited_operators.include? name
         case name
-        when String, Report::Operator then operators << name.to_operator
+        when String, engine::Operator then operators << name.to_operator
-        when Symbol then operators.push(*Report::Operator.send(name))
+        when Symbol then operators.push(*engine::Operator.send(name))
         else fail "dunno what to do with #{name.inspect}"
         end
       end
@@ -93,7 +95,7 @@ class Report::Filter
     end
 
     def operator
-      (@operator || self.class.default_operator || Report::Operator.default_operator).to_operator
+      (@operator || self.class.default_operator || engine::Operator.default_operator).to_operator
     end
 
     def operator=(value)

app/models/report/filter/no_filter.rb

@@ -3,5 +3,6 @@ class Report::Filter::NoFilter < Report::Filter::Base
   singleton
 
   def sql_statement
+    raise NotImplementedError, "My subclass should have overwritten 'sql_statement'"
   end
 end

app/models/report/operator.rb

@@ -189,6 +189,7 @@ class Report::Operator
     all[name.to_s] ||= super
   end
 
+  #TODO: this should be inheritable by subclasses
   def self.all
     @@all_operators ||= {}
   end

app/models/report/query_utils.rb

@@ -1,6 +1,16 @@
 module Report::QueryUtils
   delegate :quoted_false, :quoted_true, :to => "ActiveRecord::Base.connection"
 
+  def self.included(base)
+    @includees ||= []
+    @includees << base
+  end
+
+  def self.send_to_all_includees(mod)
+    @includees ||= []
+    @includees.each {|i| i.send :include, mod }
+  end
+
   ##
   # Subclass of Report to be used for constant lookup and such.
   # It is considered public API to override this method i.e. in Tests.
@@ -28,8 +38,22 @@ module Report::QueryUtils
   # @param [#flatten] *values Ruby collection
   # @return [String] SQL collection
   def collection(*values)
+    if values.empty?
+      ""
+    else
       "(#{values.flatten.map { |v| "'#{quote_string(v)}'" }.join ", "})"
     end
+  end
+
+  ##
+  # Graceful, internationalized quoted string.
+  #
+  # @see quote_string
+  # @param [Object] str String to quote/translate
+  # @return [Object] Quoted, translated version
+  def quoted_label(ident)
+    "'#{quote_string l(ident)}'"
+  end
 
   def quoted_date(date)
     ActiveRecord::Base.connection.quoted_date date.to_dateish
@@ -74,6 +98,7 @@ module Report::QueryUtils
   # @return [String] Field name.
   def field_name_for(arg, default_table = nil)
     return 'NULL' unless arg
+    return field_name_for(arg.keys.first, default_table) if arg.is_a? Hash
     return arg if arg.is_a? String and arg =~ /\.| |\(.*\)/
     return table_name_for(arg.first || default_table) + '.' << arg.last.to_s if arg.is_a? Array and arg.size == 2
     return arg.to_s unless default_table
@@ -87,10 +112,11 @@ module Report::QueryUtils
   # @param [Object] statement Not sanitized statement.
   # @return [String] Sanitized statement.
   def sanitize_sql_for_conditions(statement)
-    Report.send :sanitize_sql_for_conditions, statement
+    engine.send :sanitize_sql_for_conditions, statement
   end
 
   ##
+  # FIXME: This is redmine
   # Generates string representation for a currency.
   #
   # @see CostRate.clean_currency

app/models/report/sql_statement.rb

@@ -150,6 +150,11 @@ class Report::SqlStatement
     end
   end
 
+  def default_select(value = nil)
+    @default_select = value if value
+    @default_select ||= ["*"]
+  end
+
   ##
   # @overload select
   #   @return [Array<String>] All fields/statements for select part
@@ -165,7 +170,7 @@ class Report::SqlStatement
   #   @param [Array, Hash, String, Symbol, SqlStatement] fields Fields to add to select part
   #   @return [Array<String>] All fields/statements for select part
   def select(*fields)
-    return(@select || ["*"]) if fields.empty?
+    return(@select || default_select) if fields.empty?
     returning(@select ||= []) do
       @sql = nil
       fields.each do |f|
@@ -176,7 +181,7 @@ class Report::SqlStatement
           end
         when Hash then select f.map { |k,v| "#{field_name_for v} as #{field_name_for k}" }
         when String, Symbol then @select << field_name_for(f)
-        when Report::SqlStatement then @select << f.to_s
+        when engine::SqlStatement then @select << f.to_s
         else raise ArgumentError, "cannot handle #{f.inspect}"
         end
       end