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 379 379: def to_default_fields_sql(builder, definition, &block) 380: raise ScopedSearch::QueryNotSupported, "Value not a leaf node" unless rhs.kind_of?(ScopedSearch::QueryLanguage::AST::LeafNode) 381: 382: # Search keywords found without context, just search on all the default fields 383: fragments = definition.default_fields_for(rhs.value, operator).map { |field| 384: builder.sql_test(field, operator, rhs.value,'', &block) }.compact 385: 386: case fragments.length 387: when 0 then nil 388: when 1 then fragments.first 389: else "#{fragments.join(' OR ')}" 390: end 391: end
Returns an IS (NOT) NULL SQL fragment
# File lib/scoped_search/query_builder.rb, line 365 365: def to_null_sql(builder, definition, &block) 366: field = definition.field_by_name(rhs.value) 367: raise ScopedSearch::QueryNotSupported, "Field '#{rhs.value}' not recognized for searching!" unless field 368: 369: if field.key_field 370: yield(:parameter, rhs.value.to_s.sub(/^.*\./,'')) 371: end 372: case operator 373: when :null then "#{field.to_sql(builder, &block)} IS NULL" 374: when :notnull then "#{field.to_sql(builder, &block)} IS NOT NULL" 375: end 376: end
Explicit field name given, run the operator on the specified field only
# File lib/scoped_search/query_builder.rb, line 394 394: def to_single_field_sql(builder, definition, &block) 395: raise ScopedSearch::QueryNotSupported, "Field name not a leaf node" unless lhs.kind_of?(ScopedSearch::QueryLanguage::AST::LeafNode) 396: raise ScopedSearch::QueryNotSupported, "Value not a leaf node" unless rhs.kind_of?(ScopedSearch::QueryLanguage::AST::LeafNode) 397: 398: # Search only on the given field. 399: field = definition.field_by_name(lhs.value) 400: raise ScopedSearch::QueryNotSupported, "Field '#{lhs.value}' not recognized for searching!" unless field 401: builder.sql_test(field, operator, rhs.value,lhs.value, &block) 402: end
Convert this AST node to an SQL fragment.
# File lib/scoped_search/query_builder.rb, line 405 405: def to_sql(builder, definition, &block) 406: if operator == :not && children.length == 1 407: builder.to_not_sql(rhs, definition, &block) 408: elsif [:null, :notnull].include?(operator) 409: to_null_sql(builder, definition, &block) 410: elsif children.length == 1 411: to_default_fields_sql(builder, definition, &block) 412: elsif children.length == 2 413: to_single_field_sql(builder, definition, &block) 414: else 415: raise ScopedSearch::QueryNotSupported, "Don't know how to handle this operator node: #{operator.inspect} with #{children.inspect}!" 416: end 417: end