| 摘要 |
PROBLEM TO BE SOLVED: To improve compressibility by analyzing the tree structure of an element in a document realizing value and shifting information on a leaf element into a starting tag as the attribute of a master element to maintain the feature of a structured document to make compression of a tag part possible. SOLUTION: A document realizing value analyzing part 20 analyzes a document realizing value forming an XML document and outputs the element list (file) of leaves as the analyzing result of the tree structure (master and slave relation) of an element. At this time, in the list of the elements of the leaves outputted from the part 20, elements arranged as the leaves of the tree structure without having slave elements are detected and a corresponding relation between the element of the leaves and a master element is clearly written. A document realizing value changing part moves information on the leaf element at the document realizing value into the starting tag of the master element as the attribute of the master element of the leaf element in accordance with the analyzing result (the list of the elements of the leaves) by the part 20 so as to simplify the expression of the document realizing value. Then, the XML document is outputted and stored in a document storage part 10, etc., after being changed and compressed. |
