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 488 def to_default_fields_sql(builder, definition, &block) 489 raise ScopedSearch::QueryNotSupported, "Value not a leaf node" unless rhs.kind_of?(ScopedSearch::QueryLanguage::AST::LeafNode) 490 491 # Search keywords found without context, just search on all the default fields 492 fragments = definition.default_fields_for(rhs.value, operator).map { |field| 493 builder.sql_test(field, operator, rhs.value,'', &block) }.compact 494 495 case fragments.length 496 when 0 then nil 497 when 1 then fragments.first 498 else "#{fragments.join(' OR ')}" 499 end 500 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 474 def to_null_sql(builder, definition, &block) 475 field = definition.field_by_name(rhs.value) 476 raise ScopedSearch::QueryNotSupported, "Field '#{rhs.value}' not recognized for searching!" unless field 477 478 if field.key_field 479 yield(:parameter, rhs.value.to_s.sub(/^.*\./,'')) 480 end 481 case operator 482 when :null then "#{field.to_sql(builder, &block)} IS NULL" 483 when :notnull then "#{field.to_sql(builder, &block)} IS NOT NULL" 484 end 485 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 503 def to_single_field_sql(builder, definition, &block) 504 raise ScopedSearch::QueryNotSupported, "Field name not a leaf node" unless lhs.kind_of?(ScopedSearch::QueryLanguage::AST::LeafNode) 505 raise ScopedSearch::QueryNotSupported, "Value not a leaf node" unless rhs.kind_of?(ScopedSearch::QueryLanguage::AST::LeafNode) 506 507 # Search only on the given field. 508 field = definition.field_by_name(lhs.value) 509 raise ScopedSearch::QueryNotSupported, "Field '#{lhs.value}' not recognized for searching!" unless field 510 511 # see if the value passes user defined validation 512 if operator == :in 513 rhs.value.split(',').each { |v| validate_value(field, v) } 514 else 515 validate_value(field, rhs.value) 516 end 517 518 builder.sql_test(field, operator, rhs.value,lhs.value, &block) 519 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 522 def to_sql(builder, definition, &block) 523 if operator == :not && children.length == 1 524 builder.to_not_sql(rhs, definition, &block) 525 elsif [:null, :notnull].include?(operator) 526 to_null_sql(builder, definition, &block) 527 elsif children.length == 1 528 to_default_fields_sql(builder, definition, &block) 529 elsif children.length == 2 530 to_single_field_sql(builder, definition, &block) 531 else 532 raise ScopedSearch::QueryNotSupported, "Don't know how to handle this operator node: #{operator.inspect} with #{children.inspect}!" 533 end 534 end
Private Instance Methods
validate_value(field, value)
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# File lib/scoped_search/query_builder.rb 538 def validate_value(field, value) 539 validator = field.validator 540 if validator 541 valid = field.special_values.include?(value) || validator.call(value) 542 raise ScopedSearch::QueryNotSupported, "Value '#{value}' is not valid for field '#{field.field}'" unless valid 543 end 544 end