CN110059086A - Structuring automatic storage method based on IFC mode and its mapping model - Google Patents
Structuring automatic storage method based on IFC mode and its mapping model Download PDFInfo
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- CN110059086A CN110059086A CN201910208258.3A CN201910208258A CN110059086A CN 110059086 A CN110059086 A CN 110059086A CN 201910208258 A CN201910208258 A CN 201910208258A CN 110059086 A CN110059086 A CN 110059086A
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- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
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Abstract
The invention discloses a kind of structuring automatic storage method based on IFC mode and its mapping model, step includes: 1) to parse the information in relation to entity, the part Pset, Qset in IFC official document, the information for building table in relevant database is extracted, excel file is exported as；2) initial data in obtained excel file is handled, prototype structure is mapped in the structure of relevant database, created temporary data table, obtain three database supplementary tables；3) according to each entity of data acquisition, Pset, Qset of three database supplementary tables attribute for including and its corresponding type of attribute；4) data in IFC file are extracted using regular expression and is parsed, create customized table, be stored in corresponding database.Method of the invention is simple and easy, convenient for promoting.
Description
Technical field
The invention belongs to architectural engineering information based data technical field of memory, are related to a kind of based on IFC mode and its mapping
The structuring automatic storage method of model.
Background technique
IFC data pattern (Industry Foundation Classes, industrial foundation class) is by buildingSMART
One Open Standard of exploitation is based on object-oriented data model, for solving the interaction of engineering construction industry data and retouching
The problems such as circulation present in stating is poor, inconsistent.IFC standard is that the manageable building data of a computer are indicated and handed over
Dehorn is quasi-, and for information representation and the international standard exchanged of various aspects in building whole life cycle, BIM software can be with base
Data exchange and sharing is carried out in IFC.
The prior art is will to build data to be stored in the physical file of IFC, and search efficiency is low, and safety is poor, reliability
It is not high, be not suitable for being calculated, the higher level operations such as reasoning.
Summary of the invention
The object of the present invention is to provide a kind of the structuring automatic storage method based on IFC mode and its mapping model, solution
The prior art of having determined is using in file management IFC data procedures, and IFC data extraction efficiency is low, error-prone problem.
The technical scheme adopted by the invention is that a kind of structuring based on IFC mode and its mapping model is automatically stored
Method follows the steps below to implement:
Step 1, the information in relation to entity, the part Pset, Qset in IFC official document is parsed, relational data is extracted
The information that table is built in library, exports as excel file；
Step 2, the initial data in excel file that step 1 obtains is handled, prototype structure is mapped to relationship
In the structure of type database, temporary data table is created, three database supplementary tables are obtained；
Step 3, the category for including according to each entity of data acquisition, Pset, Qset of three above-mentioned database supplementary tables
Property and its corresponding type of attribute, it is predefined to be respectively created 766 entity tables, 408 predefined Pset tables and 91
Qset table；
Step 4, the data in IFC file are extracted using regular expression and is parsed, created customized
Table is stored in corresponding database, and wherein the value of value is not with having ambiguous separator to be separated.
The invention has the advantages that this method is based on IFC mode and its mapping model, by entity, property set
The storage and management of (Property Set, hereinafter referred to as Pset), magnitude (Quantity Set, hereinafter referred to as Qset), can
Accelerate the process of realization architectural design field informationization, provides convenience for architectural design audit.In addition, in the background of big data
Under, architectural design data are reasonably stored, can bring many benefits: first, past design experiences are summarized, from difference
Angle new design inspiration is provided to designer；Second, it builds question answering system Computer Aided Design personnel and is designed and assesses；
Third is conducive to relevant department and audits to design data, can also provide reference when formulating new standard and new specification；The
Four, data are provided when training to new person and are supported.
Detailed description of the invention
Fig. 1 is the flow chart of step 1 embodiment of the present invention (by taking IfcDoor as an example)；
Fig. 2 is the flow chart of step 2 embodiment of the present invention (by taking IfcDoor as an example)；
Fig. 3 is the flow chart of step 3 embodiment of the present invention；
Fig. 4 is the flow chart of step 4 embodiment of the present invention；
Fig. 5 is the complete job flow diagram of the method for the present invention.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
Platform of the present invention using MySQL as storage IFC data, is a kind of relevant database of open source code
(RDBMS), data base administration is carried out using most common database management language-structured query language (SQL).MySQL because
For speed is fast, high reliablity and adaptability are good and be concerned.In the case where not needing to carry out transactional processing, MySQL is
Management content selects well.
Referring to Fig. 5, the present invention is based on IFC mode and its structuring automatic storage methods of mapping model, according to following step
It is rapid to implement:
Step 1, the information in relation to entity, the part Pset, Qset in IFC official document is parsed, relational data is extracted
The information that table is built in library, exports as excel file, respectively such as four tables in the following table 1:
The content of 1, four table of table is explained
| Title | Content is explained |
| entityInfo | Entity attributes and its type |
| PsetInfo | The attribute and its type of property set Pset |
| QsetInfo | The attribute and its type of property set Qset |
| treeTable | Entity is inherited and its information of place depth |
Detailed process is as follows:
1.1) entity type and attribute are extracted
Regular 1.1.1: only extracting the attribute and type of entity label identical with current entity name,
By taking IfcDoor as an example, OverallHeight, OverallWidth, PredefinedType are only extracted,
The type and its corresponding type of this five entities of OperationType, UserDefinedOperationType；
Regular 1.1.2: attribute and type under removal inverse label；
Regular 1.1.3: retain constraint keyword；
1.2) attribute and type of Pset and Qset are extracted
Regular 1.2.1: Pset/Qset are extracted, is physical name, attribute-name and type belonging to correspondence；
By taking Pset_DoorCommin as an example, its attribute are as follows:
FireRating (IfcIdentifier), it belongs to the entity of entitled IfcDoor；
Similarly, the structure of Qset is extracted according to rule identical with Pset；
1.3) inheritance is extracted
Regular 1.3.1: the physical name in penultimate entity label is extracted, as the direct father of current entity
Entity,
By taking IfcDoor as an example, entity number 190, direct father's entity is IfcBuildingElement, and direct father is real
The number of body is 57；
Regular 1.3.2: direct father's entity of root node is referred to as ENTITY,
Program 1.1: being numbered all physical names, and the number of plies where all entities is obtained using recursive algorithm, and
It is added in each entity record,
By taking IfcDoor as an example, corresponding depth is 6；
Program 1.2: the IFC structured data of extraction is stored in excel file, to this i.e. exportable storing data
Excel file；
It referring to Fig.1, is the flow chart of step 1 by taking IfcDoor as an example.
Step 2, the initial data in excel file that step 1 obtains is handled, prototype structure is mapped to relationship
In the structure of type database, temporary data table is created,
Detailed process is as follows:
2.1) data type of IFC file is converted to the data type of relevant database,
Regular 2.1.1: if the reserved word in attribute-name and database conflicts, " ifc_ " is added before attribute-name, and will
Change record is saved and is updated；
Regular 2.1.2: being following mapping by the simple type definitions in IFC file:
The mapping of table 2, simple types
| Real | Number | Integer | Boolean | Logical | String | binary |
| varchar | float | bigint | tinyint | smallint | varchar | varbinary |
Program 2.1: extracting definedtypes in the document of official website, the mapping of type in enumtypes, selecttypes
The mapping data of extraction are stored in excel file by relationship,
By taking IfcDuration as an example, the type string of mapping；
2.2) entity, Pset and Qset data are stored
Program 2.2: entity, Pset, Qset and inheritance data are stored in the interim table in MySQL database, with reality
For body IfcDoor, corresponding data include listed by table 3:
The data of table 3, IfcDoor in interim table
| Attribute | Type |
| OverallHeight | float |
| OverallWidth | float |
| PredefinedType | varchar(30) |
| OperationType | varchar(30) |
| UserDefinedOperationType | varchar(255) |
Similarly Pset_DoorCommon is consistent with the data format of Qto_DoorBaseQuant such as table 3, respectively insert number
According in PsetInfo and QsetInfo table entitled in library；
2.3) constraint of attribute in entity is extracted
Regular 2.3.1: in addition to regarding as and empty can constrain OPTIONAL, entity reference is all regarded in other constraints as, is obtained
Three databases supplementary table entityInfo, PsetInfo and QsetInfo, so far can output database supplementary table；
It is the flow chart of the step 2 by taking IfcDoor as an example referring to Fig. 2.
Step 3, include according to each entity of data acquisition, Pset, Qset of three database supplementary tables obtained above
Attribute and its corresponding type of attribute, it is predefined that 766 entity tables, 408 predefined Pset tables and 91 are respectively created
Qset table,
Detailed process is as follows:
3.1) according to following regular 3.1.1, by the record concatenation in Pset tables of data and Qset tables of data at SQL language
Sentence creates the database table named with Pset/Qset；
Regular 3.1.1: by the Pset in database, Qset and entity information with as described in the following table 4 format with MySQL pairs
It answers:
Table 4, initial data to the mapping for building table SQL
If 3.2) there is the case where reference Pset or Qset in entity, establish after adding the external key of Pset or Qset with entity
The database table of name name；
Program 3.1: query entity data, splicing is built table SQL and is executed, by taking IfcDoor as an example, table structure are as follows:
Program 3.2: traversal obtains the succession sequence of non-root node, obtains entity and inherits sequence, by taking IfcDoor as an example, it
Succession sequence it is as follows:
IfcRoot,IfcObjectDefinition,IfcObject,IfcProduct,IfcElement,
IfcBuildingElement,IfcDoor；
Program 3.3: sequence is inherited according to the entity that program 3.2 obtains, the foreign key constraint of these entities in renewal sequence；
It so far is the database table structure of exportable all predefined entities, Pset and Qset；
It is the flow chart of the step 3 by taking IfcDoor as an example referring to Fig. 3.
Step 4, the data in IFC file are extracted using regular expression and is parsed, created customized
Table is stored in corresponding database, and wherein the value of value is not with having ambiguous separator to be separated,
Detailed process is as follows:
4.1) IFC file is parsed using regular expression
Program 4.1: each data in IFC file are extracted, and SQL is spliced into according to physical name and is inserted into corresponding entity
In table, the predefined data in IFC file can be imported database since then；
By taking #40202 in IFC file as an example, extracts data and is inserted into database in the table of entitled IFCDOOR:
After the parsing of each field, it is as follows to obtain insert sentence:
4.2) table structure of customized Pset or Qset is created
Program 4.2: customized Pset or Qset is found from ifcpropertyset and ifcelementquantity, is mentioned
Format therein is taken, the database table that SQL creation is named with Pset or Qset is spliced according to regular 3.1.1, it can be in data
The structure of customized Pset or Qset in library；
By taking the #676 in IFC file as an example, the entitled " staged " of the customized Pset is obtained, it includes two categories
Property, it is " classification " and " stage ID " respectively, can directly establishes entitled " staged " table in the database after obtaining these data；
4.3) it is inserted into Pset and Qset data one by one
Program 4.3: the data in ifcpropertyset and ifcelementquantity are read, SQL statement is spliced into
All data are inserted into, it can be by the insertion of data into data library of all Pset and Qset；
By taking entitled " staged " customized Pset as an example, the following table 5 of its structure and data:
Table 5, the structure of " staged " and data correspond to table
4.4) establish being associated between property set and entity
Program 4.4: the succession sequence table obtained according to program 3.2, which is established between entity and property set, to be associated with, wherein entity
Father's entity including current entity and the entity；
By taking IfcDoor as an example, it has entitled " staged " Pset, and all father's entities also possess this
Pset；
So far the data in IFC file can be completely stored in database.
It is the flow chart of the embodiment of step 3 referring to Fig. 4.
Innovative point of the invention specifically includes that 1) according to IFC structure extraction transformation rule, can be with automated storing IFC number
According to being converted into structural data；2) parsing document is obtained based on inheritance, and is expanded based on relation inference attribute
Exhibition；3) automation extension can be carried out for the data of IFC artificial regeneration.
In conclusion method of the invention, by extracting and concluding in official document in relation to entity, property set and quantity set
Information builds database after being handled these information, then generate interface and import IFC data, for effectively management IFC data
Basis is provided；Data are provided in the stages such as architectural design, design evaluation, trainings to support, accelerate to realize architectural design field information
The process of change provides convenience for architectural design audit.
Claims (5)
1. a kind of structuring automatic storage method based on IFC mode and its mapping model, which is characterized in that according to the following steps
Implement:
Step 1, the information in relation to entity, the part Pset, Qset in IFC official document is parsed, is extracted in relevant database
For building the information of table, excel file is exported as；
Step 2, the initial data in excel file that step 1 obtains is handled, prototype structure is mapped to relationship type number
According in the structure in library, temporary data table is created, three database supplementary tables are obtained；
Step 3, according to each entity of data acquisition, Pset, Qset of three above-mentioned database supplementary tables attribute for including and
766 entity tables, 408 predefined Pset tables and 91 predefined Qset tables are respectively created in the corresponding type of its attribute；
Step 4, the data in IFC file are extracted using regular expression and is parsed, created customized table, deposit
It is put into corresponding database, wherein the value of value is not with having ambiguous separator to be separated.
2. the structuring automatic storage method according to claim 1 based on IFC mode and its mapping model, feature exist
In: in the step 1, derived excel file, respectively such as four tables in the following table 1:
The content of 1, four table of table is explained
Detailed process is as follows:
1.1) entity type and attribute are extracted
Regular 1.1.1: only extracting the attribute and type of entity label identical with current entity name,
Regular 1.1.2: attribute and type under removal inverse label；
Regular 1.1.3: retain constraint keyword；
1.2) attribute and type of Pset and Qset are extracted
Regular 1.2.1: Pset/Qset are extracted, is physical name, attribute-name and type belonging to correspondence；
By taking Pset_DoorCommin as an example, its attribute are as follows: FireRating (IfcIdentifier), it belongs to entitled
The entity of IfcDoor；
Similarly, the structure of Qset is extracted according to rule identical with Pset；
1.3) inheritance is extracted
Regular 1.3.1: extracting the physical name in penultimate entity label, real as the direct father of current entity
Body,
Regular 1.3.2: direct father's entity of root node is referred to as ENTITY,
Program 1.1: being numbered all physical names, the number of plies where all entities is obtained using recursive algorithm, and add
Into each entity record,
Program 1.2: the IFC structured data of extraction is stored in excel file,
To the excel file of this i.e. exportable storing data.
3. the structuring automatic storage method according to claim 2 based on IFC mode and its mapping model, feature exist
In: in the step 2, detailed process is as follows:
2.1) data type of IFC file is converted to the data type of relevant database,
Regular 2.1.1: if the reserved word in attribute-name and database conflicts, adding " ifc_ " before attribute-name, and will change
Record is saved and is updated；
Regular 2.1.2: being following mapping by the simple type definitions in IFC file:
The mapping of table 2, simple types
Program 2.1: extracting definedtypes in the document of official website, the mapping relations of type in enumtypes, selecttypes,
The mapping data of extraction are stored in excel file；
2.2) entity, Pset and Qset data are stored
Program 2.2: entity, Pset, Qset and inheritance data are stored in the interim table in MySQL database, with entity
For IfcDoor, corresponding data include listed by table 3:
The data of table 3, IfcDoor in interim table
Similarly Pset_DoorCommon is consistent with the data format of Qto_DoorBaseQuant such as table 3, is inserted into database respectively
In in entitled PsetInfo and QsetInfo table；
2.3) constraint of attribute in entity is extracted
Regular 2.3.1: in addition to regarding as and empty can constrain OPTIONAL, entity reference is all regarded in other constraints as, obtains three
Database supplementary table entityInfo, PsetInfo and QsetInfo；
It so far can output database supplementary table.
4. the structuring automatic storage method according to claim 3 based on IFC mode and its mapping model, feature exist
In: in the step 3, detailed process is as follows:
3.1) according to following regular 3.1.1, by the record concatenation in Pset tables of data and Qset tables of data at SQL statement, wound
Build the database table named with Pset/Qset；
Regular 3.1.1: by the Pset in database, Qset and entity information are corresponding with MySQL with the format as described in the following table 4:
Table 4, initial data to the mapping for building table SQL
If 3.2) there is the case where reference Pset or Qset in entity, adds to establish after the external key of Pset or Qset and be ordered with physical name
The database table of name；
Program 3.1: query entity data, splicing are built table SQL and are executed；
Program 3.2: traversal obtains the succession sequence of non-root node, obtains entity and inherits sequence；
Program 3.3: sequence is inherited according to the entity that program 3.2 obtains, the foreign key constraint of these entities in renewal sequence；
It so far is the database table structure of exportable all predefined entities, Pset and Qset.
5. the structuring automatic storage method according to claim 4 based on IFC mode and its mapping model, feature exist
In: in the step 4, detailed process is as follows:
4.1) IFC file is parsed using regular expression
Program 4.1: each data in IFC file are extracted, and SQL is spliced into according to physical name and is inserted into corresponding entity table
In, the predefined data in IFC file can be imported database since then；
4.2) table structure of customized Pset or Qset is created
Program 4.2: customized Pset or Qset is found from ifcpropertyset and ifcelementquantity, extracts it
In format, the database table that SQL creation is named with Pset or Qset is spliced according to regular 3.1.1, can be in the database
The structure of customized Pset or Qset；
4.3) it is inserted into Pset and Qset data one by one
Program 4.3: reading the data in ifcpropertyset and ifcelementquantity, is spliced into SQL statement insertion
All data, can be by the insertion of data into data library of all Pset and Qset；
4.4) being associated between property set and entity is established
Program 4.4: the succession sequence table obtained according to program 3.2, which is established between entity and property set, to be associated with, and wherein entity includes
Father's entity of current entity and the entity；
So far the data in IFC file can be completely stored in database.
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| CN113988084A (en) * | 2021-12-27 | 2022-01-28 | 山东师范大学 | BIM and GIS body fusion method and system based on SWRL rule |
| CN116303732A (en) * | 2023-05-25 | 2023-06-23 | 山东师范大学 | Data conversion verification method and system for geographic information system and building information model |
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