CN108052557B - Method and system for accessing graphic data of GIS power grid into full-service data center - Google Patents
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Abstract
The invention discloses a method and a system for accessing graphic data of a GIS power grid into a full-service data center, wherein a source oracle database is connected according to a configuration file, and then table names of all tables are read from the source oracle database; reading the metadata information of each table according to the table name; confirming a field name SHAPE corresponding to the field type of MDSYS.SDO _ GEOMETRY in a table containing power grid graphic data according to the acquired metadata information; SHAPE, including seven subfield names; creating a target table of an analysis domain of the full-service data center: traversing all the columns in each obtained table, converting seven sub-field names corresponding to the MDSYS.SDO _ GEOMETRY types into field names of mysql of a target end database, wherein the rest field names of the mysql are consistent with the field names of a source end oracle database; and executing a data extraction conversion loading task.
Description
Technical Field
The invention relates to a method and a system for accessing graphic data of a GIS power grid into a full-service data center.
Background
The GIS System (Geographic Information System, Geographic Information System or Geo-Information System, GIS) is used as a core service System of a national network company, and the total data of the GIS System needs to be copied to a full service data center analysis domain. Several data access modes commonly used for data access of a GIS system include: data extraction ETL tools (key/informatics/sqoop), data replication tools (OGG), and the like.
The disadvantages are as follows: for the power grid graphic data in the GIS system, the data are all stored in an ORACLE space field (SDO _ GROMETRY), and the data type adopts a technology of decomposition storage, namely, one geographic space is decomposed into a plurality of objects. Because the database component selected by the analysis domain of the full-service data center cannot directly store the fields of the type of the ORACLE database MDSYS.SDO _ GEOMETRY of the source system, the direct access of the graphic data of the power grid cannot be realized, and conversion processing is needed, but the development of an ETL program is complicated, the data conversion logic is complex, and the efficiency is not high.
Disclosure of Invention
Aiming at the technical difficulty that the traditional ETL mode can not directly convert the power grid graphic data, the method and the system which have strong practicability and allow the GIS power grid graphic data to be accessed into the full-service data center are provided.
The method for accessing GIS power grid graphic data to the full-service data center comprises the following steps:
step (1): connecting a source oracle database according to the configuration file, and reading table names of all tables from the source oracle database; reading the metadata information of each table according to the table name;
step (2): confirming a field name SHAPE corresponding to the field type of MDSYS.SDO _ GEOMETRY in the table containing the power grid graphic data according to the metadata information acquired in the step (1); the field name SHAPE, comprising seven subfield names;
and (3): creating a target table of an analysis domain of the full-service data center: traversing all columns in each table obtained in the step (1), converting the seven sub-field names in the step (2) corresponding to the MDSYS.SDO _ GEOMETRY type into field names of mysql of a target end database, wherein the rest field names of the mysql are consistent with the field names of the source end oracle database;
and (4): and executing a data extraction conversion loading task.
The metadata information includes: index information for the table, partition information, maximum ROWID value for each block of the table, minimum ROWID value for each block of the table, field name for each column in the table, and field type for each column.
A field name SHAPE comprising: seven sub-field names of SHAPE, SDO _ GTYPE, SHAPE, SDO _ SRID, SHAPE, SDO _ POINT.X, SHAPE, SDO _ POINT.Y, SHAPE, SDO _ ELEM _ INFO, and SHAPE, SDO _ ORDINATES.
The step (4) comprises the following steps:
step (41): creating a data extraction process pool, and setting the number n of processes to be smaller than the number of the tables acquired in the step (1);
step (42): one process is only responsible for data extraction of one table, when the data extraction of one process in the data extraction process pool is completed, a new table is added and placed into the data extraction process pool, and the total number of the executed processes is maintained to be n;
step (43): and (3) each process divides all data in the table into a plurality of subtasks according to the partition information obtained in the step (1), the maximum ROWID value of each block of the table and the minimum ROWID value of each block of the table, then starts multithreading, and each thread extracts the data volume corresponding to one subtask at a time.
GIS electric wire netting graphic data inserts system in full service data center, includes: a memory, a processor, and a computer program stored on the memory and executed on the processor, the computer program when executed by the processor performing the steps of:
step (1): connecting a source oracle database according to the configuration file, and reading table names of all tables from the source oracle database; reading the metadata information of each table according to the table name;
step (2): confirming a field name SHAPE corresponding to the field type of MDSYS.SDO _ GEOMETRY in the table containing the power grid graphic data according to the metadata information acquired in the step (1); the field name SHAPE, comprising seven subfield names;
and (3): creating a target table of an analysis domain of the full-service data center: traversing all columns in each table obtained in the step (1), converting the seven sub-field names in the step (2) corresponding to the MDSYS.SDO _ GEOMETRY type into field names of mysql of a target end database, wherein the rest field names of the mysql are consistent with the field names of the source end oracle database;
and (4): and executing a data extraction conversion loading task.
A computer readable storage medium having stored thereon computer instructions which, when executed by a processor, perform the steps of:
step (1): connecting a source oracle database according to the configuration file, and reading table names of all tables from the source oracle database; reading the metadata information of each table according to the table name;
step (2): confirming a field name SHAPE corresponding to the field type of MDSYS.SDO _ GEOMETRY in the table containing the power grid graphic data according to the metadata information acquired in the step (1); the field name SHAPE, comprising seven subfield names;
and (3): creating a target table of an analysis domain of the full-service data center: traversing all columns in each table obtained in the step (1), converting the seven sub-field names in the step (2) corresponding to the MDSYS.SDO _ GEOMETRY type into field names of mysql of a target end database, wherein the rest field names of the mysql are consistent with the field names of the source end oracle database;
and (4): and executing a data extraction conversion loading task.
Compared with the prior art, the invention has the beneficial effects that:
at present, the construction work of the data center analysis domain is comprehensively carried out in the national network, wherein a GIS system is taken as a core business system of a company, and the full extraction of business data is one of key work of the data analysis domain. By analyzing the GIS power grid graphic data access difficulty, a data access mode aiming at the type of the power grid graphic data is provided, reference is provided for the popularization unit to carry out GIS power grid graphic data access, the popularization unit can be helped to complete the data access work smoothly, and the popularization value is good.
Aiming at the technical difficulty that the traditional ETL mode can not directly convert the power grid graphic data, the method has strong practicability, can directly extract, convert and totally access the power grid graphic data to the analysis domain of the full-service data center, and has simple conversion logic and high efficiency.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a flow chart of the present invention.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1, a method for accessing graphic data of a GIS power grid to a full-service data center includes:
step (1): connecting a source oracle database according to the configuration file, and reading table names of all tables from the source oracle database; reading the metadata information of each table according to the table name;
step (2): confirming a field name SHAPE corresponding to the field type of MDSYS.SDO _ GEOMETRY in the table containing the power grid graphic data according to the metadata information acquired in the step (1); the field name SHAPE, comprising seven subfield names;
and (3): creating a target table of an analysis domain of the full-service data center: traversing all columns in each table obtained in the step (1), converting the seven sub-field names in the step (2) corresponding to the MDSYS.SDO _ GEOMETRY type into field names of mysql of a target end database, wherein the rest field names of the mysql are consistent with the field names of the source end oracle database;
and (4): and executing a data extraction conversion loading task.
The metadata information includes: index information for the table, partition information, maximum ROWID value for each block of the table, minimum ROWID value for each block of the table, field name for each column in the table, and field type for each column.
A field name SHAPE comprising: seven sub-field names of SHAPE, SDO _ GTYPE, SHAPE, SDO _ SRID, SHAPE, SDO _ POINT.X, SHAPE, SDO _ POINT.Y, SHAPE, SDO _ ELEM _ INFO, and SHAPE, SDO _ ORDINATES.
The step (4) comprises the following steps:
step (41): creating a data extraction process pool, and setting the number n of processes to be smaller than the number of the tables acquired in the step (1);
step (42): one process is only responsible for data extraction of one table, when the data extraction of one process in the data extraction process pool is completed, a new table is added and placed into the data extraction process pool, and the total number of the executed processes is maintained to be n;
step (43): and (3) each process divides all data in the table into a plurality of subtasks according to the partition information obtained in the step (1), the maximum ROWID value of each block of the table and the minimum ROWID value of each block of the table, then starts multithreading, and each thread extracts the data volume corresponding to one subtask at a time.
GIS electric wire netting graphic data inserts system in full service data center, includes: a memory, a processor, and a computer program stored on the memory and executed on the processor, the computer program when executed by the processor performing the steps of:
step (1): connecting a source oracle database according to the configuration file, and reading table names of all tables from the source oracle database; reading the metadata information of each table according to the table name;
step (2): confirming a field name SHAPE corresponding to the field type of MDSYS.SDO _ GEOMETRY in the table containing the power grid graphic data according to the metadata information acquired in the step (1); the field name SHAPE, comprising seven subfield names;
and (3): creating a target table of an analysis domain of the full-service data center: traversing all columns in each table obtained in the step (1), converting the seven sub-field names in the step (2) corresponding to the MDSYS.SDO _ GEOMETRY type into field names of mysql of a target end database, wherein the rest field names of the mysql are consistent with the field names of the source end oracle database;
and (4): and executing a data extraction conversion loading task.
A computer readable storage medium having stored thereon computer instructions which, when executed by a processor, perform the steps of:
step (1): connecting a source oracle database according to the configuration file, and reading table names of all tables from the source oracle database; reading the metadata information of each table according to the table name;
step (2): confirming a field name SHAPE corresponding to the field type of MDSYS.SDO _ GEOMETRY in the table containing the power grid graphic data according to the metadata information acquired in the step (1); the field name SHAPE, comprising seven subfield names;
and (3): creating a target table of an analysis domain of the full-service data center: traversing all columns in each table obtained in the step (1), converting the seven sub-field names in the step (2) corresponding to the MDSYS.SDO _ GEOMETRY type into field names of mysql of a target end database, wherein the rest field names of the mysql are consistent with the field names of the source end oracle database;
and (4): and executing a data extraction conversion loading task.
The field names of mysql are seven sub-field names, and the field types of mysql are set according to table 1.
TABLE 1
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (5)
- The method for accessing GIS power grid graphic data to a full-service data center is characterized by comprising the following steps:step (1): connecting a source oracle database according to the configuration file, and reading table names of all tables from the source oracle database; reading the metadata information of each table according to the table name;step (2): confirming a field name SHAPE corresponding to the field type of MDSYS.SDO _ GEOMETRY in the table containing the power grid graphic data according to the metadata information acquired in the step (1); the field name SHAPE, comprising seven subfield names;and (3): creating a target table of an analysis domain of the full-service data center: traversing all columns in each table obtained in the step (1), converting the seven sub-field names in the step (2) corresponding to the MDSYS.SDO _ GEOMETRY type into field names of mysql of a target end database, wherein the rest field names of the mysql are consistent with the field names of the source end oracle database;and (4): executing data extraction, conversion and loading tasks concurrently;the step (4) comprises the following steps:step (41): creating a data extraction process pool, and setting the number n of processes to be smaller than the number of the tables acquired in the step (1);step (42): one process is only responsible for data extraction of one table, when the data extraction of one process in the data extraction process pool is completed, a new table is added and placed into the data extraction process pool, and the total number of the executed processes is maintained to be n;step (43): and (3) each process divides all data in the table into a plurality of subtasks according to the partition information obtained in the step (1), the maximum ROWID value of each block of the table and the minimum ROWID value of each block of the table, then starts multithreading, and each thread extracts the data volume corresponding to one subtask at a time.
- 2. The method for accessing graphic data of the GIS power grid to the full-service data center according to claim 1, wherein the metadata information comprises: index information for the table, partition information, maximum ROWID value for each block of the table, minimum ROWID value for each block of the table, field name for each column in the table, and field type for each column.
- 3. The method for accessing graphic data of the GIS power grid to the full-service data center according to claim 1, wherein the field name SHAPE comprises: seven sub-field names of SHAPE, SDO _ GTYPE, SHAPE, SDO _ SRID, SHAPE, SDO _ POINT.X, SHAPE, SDO _ POINT.Y, SHAPE, SDO _ ELEM _ INFO, and SHAPE, SDO _ ORDINATES.
- The GIS power grid graphic data access system of the full-service data center is characterized by comprising: a memory, a processor, and a computer program stored on the memory and executed on the processor, the computer program when executed by the processor performing the steps of:step (1): connecting a source oracle database according to the configuration file, and reading table names of all tables from the source oracle database; reading the metadata information of each table according to the table name;step (2): confirming a field name SHAPE corresponding to the field type of MDSYS.SDO _ GEOMETRY in the table containing the power grid graphic data according to the metadata information acquired in the step (1); the field name SHAPE, comprising seven subfield names;and (3): creating a target table of an analysis domain of the full-service data center: traversing all columns in each table obtained in the step (1), converting the seven sub-field names in the step (2) corresponding to the MDSYS.SDO _ GEOMETRY type into field names of mysql of a target end database, wherein the rest field names of the mysql are consistent with the field names of the source end oracle database;and (4): executing data extraction, conversion and loading tasks concurrently;the step (4) comprises the following steps:step (41): creating a data extraction process pool, and setting the number n of processes to be smaller than the number of the tables acquired in the step (1);step (42): one process is only responsible for data extraction of one table, when the data extraction of one process in the data extraction process pool is completed, a new table is added and placed into the data extraction process pool, and the total number of the executed processes is maintained to be n;step (43): and (3) each process divides all data in the table into a plurality of subtasks according to the partition information obtained in the step (1), the maximum ROWID value of each block of the table and the minimum ROWID value of each block of the table, then starts multithreading, and each thread extracts the data volume corresponding to one subtask at a time.
- 5. A computer readable storage medium having stored thereon computer instructions which, when executed by a processor, perform the steps of:step (1): connecting a source oracle database according to the configuration file, and reading table names of all tables from the source oracle database; reading the metadata information of each table according to the table name;step (2): confirming a field name SHAPE corresponding to the field type of MDSYS.SDO _ GEOMETRY in the table containing the power grid graphic data according to the metadata information acquired in the step (1); the field name SHAPE, comprising seven subfield names;and (3): creating a target table of an analysis domain of the full-service data center: traversing all columns in each table obtained in the step (1), converting the seven sub-field names in the step (2) corresponding to the MDSYS.SDO _ GEOMETRY type into field names of mysql of a target end database, wherein the rest field names of the mysql are consistent with the field names of the source end oracle database;and (4): executing data extraction, conversion and loading tasks concurrently;the step (4) comprises the following steps:step (41): creating a data extraction process pool, and setting the number n of processes to be smaller than the number of the tables acquired in the step (1);step (42): one process is only responsible for data extraction of one table, when the data extraction of one process in the data extraction process pool is completed, a new table is added and placed into the data extraction process pool, and the total number of the executed processes is maintained to be n;step (43): and (3) each process divides all data in the table into a plurality of subtasks according to the partition information obtained in the step (1), the maximum ROWID value of each block of the table and the minimum ROWID value of each block of the table, then starts multithreading, and each thread extracts the data volume corresponding to one subtask at a time.
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