module ScopedSearch::QueryBuilder::AST::OperatorNode
Public Instance Methods
to_default_fields_sql(builder, definition, &block)
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No explicit field name given, run the operator on all default fields
# File lib/scoped_search/query_builder.rb, line 449 def to_default_fields_sql(builder, definition, &block) raise ScopedSearch::QueryNotSupported, "Value not a leaf node" unless rhs.kind_of?(ScopedSearch::QueryLanguage::AST::LeafNode) # Search keywords found without context, just search on all the default fields fragments = definition.default_fields_for(rhs.value, operator).map { |field| builder.sql_test(field, operator, rhs.value,'', &block) }.compact case fragments.length when 0 then nil when 1 then fragments.first else "#{fragments.join(' OR ')}" end end
to_null_sql(builder, definition) { |:parameter, value.sub(/^.*\./,'')| ... }
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Returns an IS (NOT) NULL SQL fragment
# File lib/scoped_search/query_builder.rb, line 435 def to_null_sql(builder, definition, &block) field = definition.field_by_name(rhs.value) raise ScopedSearch::QueryNotSupported, "Field '#{rhs.value}' not recognized for searching!" unless field if field.key_field yield(:parameter, rhs.value.to_s.sub(/^.*\./,'')) end case operator when :null then "#{field.to_sql(builder, &block)} IS NULL" when :notnull then "#{field.to_sql(builder, &block)} IS NOT NULL" end end
to_single_field_sql(builder, definition, &block)
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Explicit field name given, run the operator on the specified field only
# File lib/scoped_search/query_builder.rb, line 464 def to_single_field_sql(builder, definition, &block) raise ScopedSearch::QueryNotSupported, "Field name not a leaf node" unless lhs.kind_of?(ScopedSearch::QueryLanguage::AST::LeafNode) raise ScopedSearch::QueryNotSupported, "Value not a leaf node" unless rhs.kind_of?(ScopedSearch::QueryLanguage::AST::LeafNode) # Search only on the given field. field = definition.field_by_name(lhs.value) raise ScopedSearch::QueryNotSupported, "Field '#{lhs.value}' not recognized for searching!" unless field # see if the value passes user defined validation validate_value(field, rhs.value) builder.sql_test(field, operator, rhs.value,lhs.value, &block) end
to_sql(builder, definition, &block)
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Convert this AST node to an SQL fragment.
# File lib/scoped_search/query_builder.rb, line 479 def to_sql(builder, definition, &block) if operator == :not && children.length == 1 builder.to_not_sql(rhs, definition, &block) elsif [:null, :notnull].include?(operator) to_null_sql(builder, definition, &block) elsif children.length == 1 to_default_fields_sql(builder, definition, &block) elsif children.length == 2 to_single_field_sql(builder, definition, &block) else raise ScopedSearch::QueryNotSupported, "Don't know how to handle this operator node: #{operator.inspect} with #{children.inspect}!" end end
Private Instance Methods
validate_value(field, value)
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# File lib/scoped_search/query_builder.rb, line 495 def validate_value(field, value) validator = field.validator if validator valid = validator.call(value) raise ScopedSearch::QueryNotSupported, "Value '#{value}' is not valid for field '#{field.field}'" unless valid end end