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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:07:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:07:14 +0000 |
commit | a175314c3e5827eb193872241446f2f8f5c9d33c (patch) | |
tree | cd3d60ca99ae00829c52a6ca79150a5b6e62528b /storage/mroonga/vendor/groonga/lib/mrb/scripts/expression_tree/logical_operation.rb | |
parent | Initial commit. (diff) | |
download | mariadb-10.5-a175314c3e5827eb193872241446f2f8f5c9d33c.tar.xz mariadb-10.5-a175314c3e5827eb193872241446f2f8f5c9d33c.zip |
Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'storage/mroonga/vendor/groonga/lib/mrb/scripts/expression_tree/logical_operation.rb')
-rw-r--r-- | storage/mroonga/vendor/groonga/lib/mrb/scripts/expression_tree/logical_operation.rb | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/storage/mroonga/vendor/groonga/lib/mrb/scripts/expression_tree/logical_operation.rb b/storage/mroonga/vendor/groonga/lib/mrb/scripts/expression_tree/logical_operation.rb new file mode 100644 index 00000000..e8d494f8 --- /dev/null +++ b/storage/mroonga/vendor/groonga/lib/mrb/scripts/expression_tree/logical_operation.rb @@ -0,0 +1,33 @@ +module Groonga + module ExpressionTree + class LogicalOperation + attr_reader :operator + attr_reader :nodes + def initialize(operator, nodes) + @operator = operator + @nodes = nodes + end + + def build(expression) + @nodes.each_with_index do |node, i| + node.build(expression) + expression.append_operator(@operator, 2) if i > 0 + end + end + + def estimate_size(table) + estimated_sizes = @nodes.collect do |node| + node.estimate_size(table) + end + case @operator + when Operator::AND + estimated_sizes.min + when Operator::OR + estimated_sizes.max + else + estimated_sizes.first + end + end + end + end +end |