JPH05241711A - Conversion data retrieving method - Google Patents

Abstract

PURPOSE:To reduce the description amount of a conversion rule input file and also to shorten the file retrieving time. CONSTITUTION:A data conversion rule reading part 1 reads the data conversion rule and a conversion rule table production part 2 identifies whether the data conversion rule designates the full conversion or the limited conversion. Then the installs are distributed to a full designation conversion rule table 6 and a limited designation conversion rule table 7. When the retrieved data are inputted, a conversion rule table retrieving part 3 first retrieves the table 6. Then a conversion subject data converting part 4 rewrites the data when the table 6 is retrieved. If the table 6 is not retrieved, the table 7 is retrieved. Then the part 4 rewrites the data when the table 7 is retrieved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conversion data retrieval system in data conversion.

[0002]

2. Description of the Related Art In the conventional conversion data search, all conversion patterns of all specified conversions are described in a conversion rule input file and treated in the same manner as limited specified conversions.

[0003]

In this conventional conversion data search, all specified conversions are handled in the same way as limited specified conversions by describing all conversion patterns in the conversion rule input file. In the conversion process that performs a lot of, there is a problem that the description of the conversion rule input file becomes large and it is difficult to create. In addition, there is a problem that the time required for the search becomes long because there are a large number of conversion rules.

[0004]

According to the change data retrieval method of the present invention, only the first key is matched when the conversion is performed when the limited conversion is specified in which both the specified first key and the specified second key are matched. In the data conversion in which two types of conversions coexist when conversion is performed when all conversions are specified, the data conversion rule reading unit that reads the data conversion rules from the file and the conversion rules read by the data conversion rule reading unit When all conversions are specified, only the first key is installed in the table 1 as a key, and when limited conversions are specified, the combination of the first key and the second key is installed as the key in the table 2. From the conversion rule table creation unit to perform and the first search key and the second search key of the conversion data specified by the search, the table 1 is searched using only this first search key, Coupled first search key and the second search key to be searched table 2 it as a search key
A conversion rule table search unit for further searching and a data conversion unit for converting the conversion target data when the conversion data is searched by the conversion rule table search unit.

[0005]

In the present invention, by providing two conversion rule tables and distinguishing the description method of the limited specified conversion and the all specified conversion on the conversion rule input file, the conversion rule input is performed for all specified conversion rules. Eliminates the need to describe all conversion patterns in the file.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an embodiment of the present invention, showing a configuration example of a conversion data search and conversion method. In FIG. 1, 1 is a data conversion rule reading unit that reads data conversion rules from a file, 2
When the conversion rule read by the data conversion rule reading unit 1 specifies all conversions, only the first key is installed in the table 1 as a key, and when limited conversion is specified, the first key and the second key The conversion rule table creating unit 3 which installs the combination of the keys into the table 2 is used as a key. The conversion rule table creating unit 3 uses the first search key and the second search key of the conversion data specified by the search, The conversion rule table search unit 4 searches the table 2 by performing a search and combining the first search key and the second search key and using this as a search key if the search is not performed. , A conversion target data conversion unit that is a data conversion unit that converts the conversion target data, 5 is a conversion rule input file, 6 is a designated conversion rule table, Is a limited specified conversion rule table.

Next, the operation of the embodiment shown in FIG. 1 will be described.

In this data conversion, first, the data conversion rule reading unit 1 reads the conversion rule input file 5. If the second key of the read conversion rule indicates all conversion specifications, the conversion rule table creation unit 2 creates a hash key from only the first key, and uses this as a key to specify all specification change rule table 6 Install to. And the second of the read conversion rules
If the key indicates the limited conversion specification, the conversion rule table creating unit 2 creates a hash key from a combination of the first key and the second key, and uses this as a key to create the limited specification conversion rule table 7 Install to.

Next, when the search data is specified, the conversion rule table search section 3 first creates a hash key from only the specified first key, and searches the all-specified conversion rule table 6 using this as a key. Then, if found, the conversion target data conversion unit 4 rewrites the data. If not found, the specified first key and second key
A hash key is created from the key and the limited specification conversion rule table 7 is searched using this as a key. If found,
The conversion target data conversion unit 4 rewrites the data. If the conversion rule is not retrieved from either table, the data does not correspond to the conversion rule, and therefore the conversion is not performed.

FIG. 2 is a flow chart for explaining the operation of the data conversion rule reading unit 1 and the conversion rule table creating unit 2 in FIG. 1, and in one embodiment of the present invention, the conversion rule table is created from the reading of the data conversion rule. It is a figure showing the operation up to. First, the conversion rule data reading unit 11 reads the data conversion rule. The read conversion rules are sorted by the second key identifying unit 21 into two conversion rule tables, which are the total conversion designation and the limited conversion designation. If the second key of the conversion rule indicates all conversion specifications, the all-specified conversion rule table creation unit 2
In step 2, a hash key is created only from the first key of the conversion rule, and the hash key is used as a key for installation in the all-specified conversion rule table. Next, if the second key of the conversion rule indicates the limited conversion specification, the limited specification conversion rule table creating unit 23 creates a hash key from the combination of the first key and the second key of the conversion rule. Then, using this as a key, the limited specification conversion rule table is installed.

FIG. 3 is a flow chart for explaining the operations of the conversion rule table search unit 3 and the conversion target data conversion unit 4 in FIG. 1, and shows the operations from the search of conversion rules to the conversion of data. First, a hash key is created only from the first key of the conversion data input by the all-specified search key creation unit 31. Then, using this as a key, the all-specified conversion rule table search unit 32 searches the all-specified conversion rule table. When the conversion rule is retrieved, the conversion target data conversion unit 41 rewrites the data. Next, if the conversion rule is not searched, the limited specified search key creation unit 33 creates a hash key from the combination of the first key and the second key of the input conversion data. Using this as a key, the limited specification conversion rule table search unit 34 searches the limited specification conversion rule table. When the conversion rule is retrieved, the conversion target data conversion unit 41 rewrites the data. If the conversion rule is not searched, the data does not correspond to the conversion rule and no conversion is performed.

[0012]

As described above, according to the present invention, two conversion rule tables are provided, and by distinguishing the description method of the limited specified conversion and the all specified conversion on the conversion rule input file, the all specified conversion is performed. As for rules, since it is no longer necessary to describe all conversion patterns in the conversion rule input file, conversion processing can be performed with limited specification conversion and all specification conversion mixed, and conversion rules can also be described. For all specified conversion rules, it is not necessary to describe all conversion rules, the conversion rule file can be easily described, and the size of the conversion rule table can be small, so the search time can be reduced. ..

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of a data conversion rule reading unit and a conversion rule table creation unit in FIG.

3 is a flowchart for explaining the operation of a conversion rule table search unit and a conversion target data conversion unit in FIG.

[Explanation of symbols]

 1 data conversion rule reading unit 2 conversion rule table creation unit 3 conversion rule table search unit 4 conversion target data conversion unit (data conversion unit) 5 conversion rule input file 6 all specified conversion rule table 7 limited specified conversion rule table

Claims (1)

[Claims] 1. Two types of conversions are performed: one is when limited conversion is specified when both the specified first key and second key are matched and the other is specified when all conversions are specified when only the first key is matched. In mixed data conversion, the data conversion rule reading unit that reads the data conversion rules from the file and the conversion rule read by the data conversion rule reading unit uses only the first key as the key when the all conversion is specified. A conversion rule table creation unit that installs to Table 1 and installs to Table 2 with the combination of the first key and the second key as a key when the limited conversion is specified, and the conversion specified by the search From the first search key and the second search key of the data, the table 1 is searched only by this first search key, and if not searched, the first search key and the second search key are searched. A conversion rule table search unit for combining and performing a search from Table 2 using this as a search key, and a data conversion unit for converting the conversion target data when the conversion data is searched by the conversion rule table search unit. Converted data search method.