Module | ScopedSearch::QueryBuilder::AST::OperatorNode |
In: |
lib/scoped_search/query_builder.rb
|
No explicit field name given, run the operator on all default fields
# File lib/scoped_search/query_builder.rb, line 378 378: def to_default_fields_sql(builder, definition, &block) 379: raise ScopedSearch::QueryNotSupported, "Value not a leaf node" unless rhs.kind_of?(ScopedSearch::QueryLanguage::AST::LeafNode) 380: 381: # Search keywords found without context, just search on all the default fields 382: fragments = definition.default_fields_for(rhs.value, operator).map { |field| 383: builder.sql_test(field, operator, rhs.value,'', &block) }.compact 384: 385: case fragments.length 386: when 0 then nil 387: when 1 then fragments.first 388: else "#{fragments.join(' OR ')}" 389: end 390: end
Returns an IS (NOT) NULL SQL fragment
# File lib/scoped_search/query_builder.rb, line 364 364: def to_null_sql(builder, definition, &block) 365: field = definition.field_by_name(rhs.value) 366: raise ScopedSearch::QueryNotSupported, "Field '#{rhs.value}' not recognized for searching!" unless field 367: 368: if field.key_field 369: yield(:parameter, rhs.value.to_s.sub(/^.*\./,'')) 370: end 371: case operator 372: when :null then "#{field.to_sql(builder, &block)} IS NULL" 373: when :notnull then "#{field.to_sql(builder, &block)} IS NOT NULL" 374: end 375: end
Explicit field name given, run the operator on the specified field only
# File lib/scoped_search/query_builder.rb, line 393 393: def to_single_field_sql(builder, definition, &block) 394: raise ScopedSearch::QueryNotSupported, "Field name not a leaf node" unless lhs.kind_of?(ScopedSearch::QueryLanguage::AST::LeafNode) 395: raise ScopedSearch::QueryNotSupported, "Value not a leaf node" unless rhs.kind_of?(ScopedSearch::QueryLanguage::AST::LeafNode) 396: 397: # Search only on the given field. 398: field = definition.field_by_name(lhs.value) 399: raise ScopedSearch::QueryNotSupported, "Field '#{lhs.value}' not recognized for searching!" unless field 400: builder.sql_test(field, operator, rhs.value,lhs.value, &block) 401: end
Convert this AST node to an SQL fragment.
# File lib/scoped_search/query_builder.rb, line 404 404: def to_sql(builder, definition, &block) 405: if operator == :not && children.length == 1 406: builder.to_not_sql(rhs, definition, &block) 407: elsif [:null, :notnull].include?(operator) 408: to_null_sql(builder, definition, &block) 409: elsif children.length == 1 410: to_default_fields_sql(builder, definition, &block) 411: elsif children.length == 2 412: to_single_field_sql(builder, definition, &block) 413: else 414: raise ScopedSearch::QueryNotSupported, "Don't know how to handle this operator node: #{operator.inspect} with #{children.inspect}!" 415: end 416: end