CN108427572A - Land investigation database update method and its update delta package generation method - Google Patents
Land investigation database update method and its update delta package generation method Download PDFInfo
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- CN108427572A CN108427572A CN201810511648.3A CN201810511648A CN108427572A CN 108427572 A CN108427572 A CN 108427572A CN 201810511648 A CN201810511648 A CN 201810511648A CN 108427572 A CN108427572 A CN 108427572A
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
- G06F8/658—Incremental updates; Differential updates
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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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 land investigation database update method and its update delta package generation methods, belong to land investigation database establishment and update method field, solves the problems, such as that traditional update method can not carry out certain change operation to retract and full library superposition big data quantity operation efficiency is low.Main pre-defined change reference layer, pre-defined change reference layer Element Drawing rule, setting need the field item changed, draw change reference feature, generate renewal process layer element and update resultant layer element, attribute information automatic business processing etc. operating procedure.This hair when certain plays change operation and needs to retract, need to only change it is corresponding re-execute change process with reference to layer data, operation is flexibly easy to operate.The present invention can save a large amount of computing resources and activity duration, and database update working efficiency is very high.
Description
Technical field
The invention belongs to land investigation database establishments and update method field, specifically, more particularly to a kind of soil
Survey database update method and its update delta package generation method.
Background technology
Land investigation database is the main achievement of land investigation, express in detail a regional land use situation and
Allocation of landownership and land use right situation, content include administrative area, ancestor and the elements layer such as earth polygon.The least unit of administrative division is refine to
It is at village level, the ownership issue in soil is distinguished to ancestor, earth polygon then has recorded the important letter such as land classification code and land area
Breath.
The system of land investigation that China establishes is to carry out within every ten years primary national land investigation, is carrying out national soil tune
When looking into, various standards and norms are formulated, technology path and overall policy is determined, then carries out land reclamation planning every year.The whole nation
The achievement of land investigation is region-wide result of land survey database, and the achievement of annual renewal surveying is update delta package.More
New increment packet not reacts land utilization and ownership whole in certain survey area, only with respect to previous year data
The increment changing unit of (being known as beginning of the year library).It is main comprising administrative area, ancestor and earth polygon renewal process element layer and
Update result element layer.The beginning of the year library land investigation database that can obtain the trend of the times associated with update delta package (is known as year end
Library).
There are two types of land investigation database update method is general.The first be in the way of database manipulation affairs by rise
Change carries out successively.Operating procedure includes：1) affairs are opened；2) change behaviour one by one is carried out according to the change material collected
Make, each change operation complete to change together (such as the primary segmentation on ancestor ground, figure spot it is primary merge be accordingly to be regarded as becoming together
More)；3) after the completion of all change operations, end transaction forms final year end database, and generates update delta package.
There are apparent defects for this update method：If when certain change operation needs to retract in affairs, because the essence of affairs is
It is realized by storehouse, this results in being happened at all change operations risen after change and can all be retracted, and is brought to operating personnel
It does over again, if the operation in particular for rollback is in the position that affairs start, all behaviour in entire change affairs can be brought
That makees does over again, and can seriously reduce the working efficiency of land investigation database update.
Second of variation is that beginning of the year library is superimposed the method for generating update delta package with year end library, and step includes：1)
Portion is replicated as odd-job library in beginning of the year library；2) conventional edit operation directly is carried out on current odd-job library,
The database that odd-job library is revised as being consistent with trend of the times situation；3) terminate to edit after the completion of modification, at this time casual labour
It is exactly year end library to make library；4) beginning of the year library is analyzed with map overlay in year end library and executes spatial operation and generate update delta package.
The shortcomings that this mode is：No matter amount of change number, whole element in database must be carried out when generating update delta package
Overlay analysis and spatial operation.When changing quantity less when land investigation data volume is larger, need to waste a large amount of computing resource
And the time, but also land investigation database update working efficiency is low.
Invention content
The purpose of the present invention is in view of the deficienciess of the prior art, providing a kind of land investigation database update method
And its update delta package generation method.
The present invention is achieved by the following technical solutions：
A kind of land investigation database update delta package generation method, includes the following steps：
A. load beginning of the year library starts the work of land investigation database update；
B. change reference layer corresponding with the element layer in beginning of the year library is pre-defined；
C. change reference layer Element Drawing rule is pre-defined；
D. according to soil more new material, the field for needing to change is set on the change reference layer in the step a
, draw change reference feature；
E. the change reference layer that change reference feature has been drawn in the step d is corresponding with step a middle ages first library
Figure layer be overlapped analysis and spatial operation, generate renewal process layer element and update resultant layer element；
F. all renewal process layer elements in the step e and update resultant layer element are carried out at attribute information automation
Reason；
G. update delta package will be generated through step f treated renewal process layer elements and update resultant layer element export；
Preferably, the generation method of the renewal process layer element in the step e and update resultant layer element includes following
Step：
e1:Initializing system resources, the beginning of the year library obtained in change reference layer and the step a in the step e exist
Object reference in memory, initialization renewal process object container and update result object container；
e2:The element layer in the beginning of the year library and the element of the change reference layer are done into intersection operation, intersect the knot of gained
The all renewal process objects of fruit element, and be written into the renewal process object container；
e3:The element on all change reference layers is traversed, had altered reference layer element is copied into the update
In result object container；
e4:All renewal process objects are traversed, since the object is by change reference feature and beginning of the year library element phase
Friendship can get each renewal process object is wanted by which beginning of the year library element and change reference according to intersection operation result
Element intersection, according to this incidence relation to the identification code assignment rear before changing of renewal process object；
e5:Using the change reference layer element as search condition, space is executed with overlapping relation in beginning of the year library element layer
Search result element is generated a temporary layer by search；
e6:The temporary layer generated in step e5 and the change reference layer are executed into phase reducing, subtract each other the result of gained
Element is all respectively written into the renewal process object container and the update result object container；
e7:The pilot process object generated in the step e6 is changed into front and back identification code assignment；
e8:All renewal process objects are traversed, assignment is carried out to regeneration behavior；
e9:The data in the renewal process object container and the update result object container are written to correspondence successively
Database figure layer in, convert objects into element.
Preferably, the regeneration behavior in the step e8 includes without change, attribute change and pattern modifying.
Preferably, all renewal process layer elements and update resultant layer element are subjected to attribute information certainly in the step f
Dynamicization processing includes rear attribute assignment before changing, recalculates three parts of area and automatic numbering.
Preferably, described the assignment method of attribute assignment is afterwards before changing, by what is generated in the renewal process layer
Element identification code and element identification code after change replicate the attribute information of beginning of the year library element as Correlation Criteria before changing
To the attribute section before changing of the renewal process layer, the attribute of the change reference layer element is copied into the renewal process
Attribute section after the change of layer copies to the attribute of the change reference layer element in the attribute of the update resultant layer.
A kind of land investigation database update method, includes the following steps：
A. load beginning of the year library starts the work of land investigation database update；
B. change reference layer corresponding with the element layer in beginning of the year library is pre-defined；
C. change reference layer Element Drawing rule is pre-defined；
D. according to soil more new material, the field for needing to change is set on the change reference layer in the step a
, draw change reference feature；
E. the change reference layer that change reference feature has been drawn in the step d is corresponding with step a middle ages first library
Figure layer be overlapped analysis and spatial operation, generate renewal process layer element and update resultant layer element；
F. all renewal process layer elements in the step e and update resultant layer element are carried out at attribute information automation
Reason；
G. it is to update delta package through step f treated renewal process layer elements and update resultant layer element；
H. the update delta package in the step g is written in the beginning of the year library, more according to renewal process layer element
New behavior changes the beginning of the year library accordingly, and the update resultant layer element is written in the beginning of the year library, generates
Year end library.
Preferably, it includes becoming without change, attribute change and figure that the regeneration behavior in the step h, which includes regeneration behavior,
More.
Preferably, delta package is updated in the step h to be written to the beginning of the year library and include the following steps,
H1. each element in the renewal process layer is traversed；
H2. judge whether that traversal terminates, terminate to traverse if "Yes", if "No" enters h3 steps；
H3. " regeneration behavior " is read, different operation is executed according to the regeneration behavior of the renewal process layer element；
When regeneration behavior is " no change ", without any processing, the next element of searching loop；
When regeneration behavior is " attribute change ", inquired in the beginning of the year library element layer by identification code before changing to be repaired
The element changed, by identification code after change from inquired in the update resultant layer change after element, by the pass of element after change
Key attribute information is written in the correspondence attribute of element to be modified, the next element of searching loop after execution operates successfully；
When regeneration behavior is " pattern modifying ", first have to using element identification code before changing as condition in the beginning of the year library
Element layer searches for element before changing, and to be deleted want is inquired in the element layer in the beginning of the year library by element identification code before changing
Element, if inquiring element before changing, just by the element inquired delete, then using after change identification code as condition described
Update resultant layer search update result element；If not inquiring element before changing, it is directly entered with to be identified after change
Code is as condition the step for the update resultant layer searches for update result element；Into using after change identification code as condition
After the step for update resultant layer searches for update result element, then judge whether to deposit element after change, if can inquire
Element after the change is then written in the beginning of the year library by element after to change, and element after the change is tied in the update
It is deleted in fruit layer, after execution operates successfully, the next element of searching loop；If not inquiring element after change, direct time
Go through next element；
H4. until having traversed each renewal process object.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention is based on change reference layers dexterously to solve land investigation number with the superimposed update method of beginning of the year data
Rollback problem can not be carried out to certain change operation by being updated in work according to library, and it is low also to solve full library superposition big data quantity operation efficiency
The problem of.When certain, which plays change operation, needs to retract, it need to only change the corresponding layer data that refers to and re-execute change process,
Operation is flexibly easy to operate.Data volume very little for the relatively entire land investigation database of data volume due to changing reference data,
During overlay analysis and spatial operation, the data volume of the operation participated in is superimposed well below beginning of the year library and year end library
Data volume saves a large amount of computing resources and activity duration, and database update working efficiency is very high, and social benefit is very high.
Description of the drawings
Fig. 1 is land investigation database update delta package generation method flow chart of the present invention；
Fig. 2 is land investigation database update method flow diagram of the present invention；
Fig. 3 is that present invention change reference layer attribute structure defines schematic diagram；
Fig. 4 be library element at the beginning of the present invention, change reference layer element, change process layer element, update resultant layer element it
Between logical relation schematic diagram and change reference layer Element Drawing rule define schematic diagram；
Fig. 5 is the category between beginning of the year library element, change reference layer element, change process layer element, update resultant layer element
Property incidence relation and reproduction process schematic diagram；
Fig. 6 is the method flow diagram for updating delta package and being written to beginning of the year library.
Specific implementation mode
The following further describes the present invention with reference to the drawings：
A kind of land investigation database update delta package generation method, includes the following steps：
A. load beginning of the year library starts the work of land investigation database update；
B. change reference layer corresponding with the element layer in beginning of the year library is pre-defined；
C. change reference layer Element Drawing rule is pre-defined；
D. according to soil more new material, the field for needing to change is set on the change reference layer in the step a
, draw change reference feature；
E. the change reference layer that change reference feature has been drawn in the step d is corresponding with step a middle ages first library
Figure layer be overlapped analysis and spatial operation, generate renewal process layer element and update resultant layer element；
F. all renewal process layer elements in the step e and update resultant layer element are carried out at attribute information automation
Reason；
G. update delta package will be generated through step f treated renewal process layer elements and update resultant layer element export；
Preferably, the generation method of the renewal process layer element in the step e and update resultant layer element includes following
Step：
e1:Initializing system resources, the beginning of the year library obtained in change reference layer and the step a in the step e exist
Object reference in memory, initialization renewal process object container and update result object container；
e2:The element layer in the beginning of the year library and the element of the change reference layer are done into intersection operation, intersect the knot of gained
The all renewal process objects of fruit element, and be written into the renewal process object container；
e3:The element on all change reference layers is traversed, had altered reference layer element is copied into the update
In result object container；
e4:All renewal process objects are traversed, since the object is by change reference feature and beginning of the year library element phase
Friendship can get each renewal process object is wanted by which beginning of the year library element and change reference according to intersection operation result
Element intersection, according to this incidence relation to the identification code assignment rear before changing of renewal process object；
e5:Using the change reference layer element as search condition, space is executed with overlapping relation in beginning of the year library element layer
Search result element is generated a temporary layer by search；
e6:The temporary layer generated in step e5 and the change reference layer are executed into phase reducing, subtract each other the result of gained
Element is all respectively written into the renewal process object container and the update result object container；
e7:The pilot process object generated in the step e6 is changed into front and back identification code assignment；
e8:All renewal process objects are traversed, assignment is carried out to regeneration behavior；
e9:The data in the renewal process object container and the update result object container are written to correspondence successively
Database figure layer in, convert objects into element.
Preferably, the regeneration behavior in the step e8 includes without change, attribute change and pattern modifying.
Preferably, all renewal process layer elements and update resultant layer element are subjected to attribute information certainly in the step f
Dynamicization processing includes rear attribute assignment before changing, recalculates three parts of area and automatic numbering.
Preferably, described the assignment method of attribute assignment is afterwards before changing, by what is generated in the renewal process layer
Element identification code and element identification code after change replicate the attribute information of beginning of the year library element as Correlation Criteria before changing
To the attribute section before changing of the renewal process layer, the attribute of the change reference layer element is copied into the renewal process
Attribute section after the change of layer copies to the attribute of the change reference layer element in the attribute of the update resultant layer.
A kind of land investigation database update method, includes the following steps：
A. load beginning of the year library starts the work of land investigation database update；
B. change reference layer corresponding with the element layer in beginning of the year library is pre-defined；
C. change reference layer Element Drawing rule is pre-defined；
D. according to soil more new material, the field for needing to change is set on the change reference layer in the step a
, draw change reference feature；
E. the change reference layer that change reference feature has been drawn in the step d is corresponding with step a middle ages first library
Figure layer be overlapped analysis and spatial operation, generate renewal process layer element and update resultant layer element；
F. all renewal process layer elements in the step e and update resultant layer element are carried out at attribute information automation
Reason；
G. update delta package will be generated through step f treated renewal process layer elements and update resultant layer element export；
H. the update delta package in the step g is written in the beginning of the year library, more according to renewal process layer element
New behavior changes the beginning of the year library accordingly, and the update resultant layer element is written in the beginning of the year library, generates
Year end library.
Preferably, it includes becoming without change, attribute change and figure that the regeneration behavior in the step h, which includes regeneration behavior,
More.
Preferably, delta package is updated in the step h to be written to the beginning of the year library and include the following steps,
H1. each element in the renewal process layer is traversed；
H2. judge whether that traversal terminates, terminate to traverse if "Yes", if "No" enters h3 steps；
H3. " regeneration behavior " is read, different operation is executed according to the regeneration behavior of the renewal process layer element；
When regeneration behavior is " no change ", without any processing, the next element of searching loop；
When regeneration behavior is " attribute change ", inquired in the beginning of the year library element layer by identification code before changing to be repaired
The element changed, by identification code after change from inquired in the update resultant layer change after element, by the pass of element after change
Key attribute information is written in the correspondence attribute of element to be modified, the next element of searching loop after execution operates successfully；
When regeneration behavior is " pattern modifying ", first have to using element identification code before changing as condition in the beginning of the year library
Element layer searches for element before changing, and to be deleted want is inquired in the element layer in the beginning of the year library by element identification code before changing
Element, if inquiring element before changing, just by the element inquired delete, then using after change identification code as condition described
Update resultant layer search update result element；If not inquiring element before changing, it is directly entered with to be identified after change
Code is as condition the step for the update resultant layer searches for update result element；Into using after change identification code as condition
After the step for update resultant layer searches for update result element, then judge whether to deposit element after change, if can inquire
Element after the change is then written in the beginning of the year library by element after to change, and element after the change is tied in the update
It is deleted in fruit layer, after execution operates successfully, the next element of searching loop；If not inquiring element after change, direct time
Go through next element；
H4. until having traversed each renewal process object.
Embodiment 1：
It is elaborated in conjunction with Figure of description Fig. 1 to generating land investigation database update delta package generation method：It is first
First load beginning of the year library, pre-defines change reference layer corresponding with the element layer in beginning of the year library；Pre-defined change ginseng
Layer is examined, for drawing change reference feature；Pre-defined change reference layer Element Drawing rule；The update of land investigation database
It is divided from the angle of element layer, administrative area change, parcel alteration and earth polygon change can be divided into, out of single element layer
Next change Form division can be divided into segmentation change, merge change and synthesis change, comprehensive become is even more to divide and merge change
Combination.From the above, it can be seen that reference feature can be used on change reference layer for arbitrarily complicated change behavior
Reference format is expressed.For example, when two administrative villages merge and generate a new administrative village, as long as being referred in administrative area
The administrative village range after merging is drawn on layer, fills in administrative division code and the administrative area title of new administrative village to indicate current line
The merging change that administrative division is drawn.It is this to indicate the standard of change behavior with the mode for drawing element on change reference layer, be exactly
Change Element Drawing rule.Changing reference layer and field item is defined according to actual information, and Figure of description Fig. 3 is to become
More reference layer attribute structure defines schematic diagram, lists the example of setting change a reference layer and field item, change is referred to
Layer is defined as three administrative area change reference layer, parcel alteration reference layer, earth polygon reference layer change reference layers.Then to every
A change reference layer carries out structure definition, and setting needs the field item changed, draws change reference feature.For example it can incite somebody to action
Change the fields items such as the administrative area code of reference layer setting, administrative area title in administrative area；Parcel alteration reference layer set ancestor four to,
It is located the fields such as Unit code, the nature of right, land use, type of right, area of issuing licence, real estate unit number, record date
；Earth polygon reference layer setting ground class coding, is located Unit code, ownership unit name at ownership property, ownership Unit code
Claim, is located organization, deducts ground class coding, deduct the fields items such as ground class coefficient, farmland types, disused arable land grade.Specification
Attached drawing Fig. 4 is between library element at the beginning of the present invention, change reference layer element, change process layer element, update resultant layer element
Logical relation schematic diagram and change reference layer Element Drawing rule define schematic diagram, give segmentation in single element layer and become
More, merge change and synthesis changes all expression ways, and give expression to beginning of the year library element and corresponding change reference layer in detail
After element changes, the logical relation between the renewal process layer element and update resultant layer element of generation.Synthesis becomes
Segmentation and the combination for merging change, segmentation change merge change expression way and change expression way with synthesis and communicate and relatively
Comprehensive change expression way is simple, so by taking the comprehensive change expression way of specific introduction as an example, to expression side in single element layer
Formula further describes.The coding occurred in attached drawing Fig. 4 the only example illustrated example for convenience of description, it is comprehensive to change expressed by a column
Meaning is as follows：1) there are two adjacent figure spots in the element of library at the beginning of, and number is 100,101 respectively；Ground class coding is 011,013,
Current alteration is to convert to delimit a certain range of soil inside 100 and 101 figure spots because of soil sign, by this soil class
Coding becomes 061；2) range of figure spots after drawing variation during earth polygon changes reference layer, fills in the ground class after variation and compiles
Code 061 fills in other attribute informations such as ownership property after changing；3) once executes change, corresponding to be given birth in renewal process layer
At four renewal process layer elements, number is 100-1,100-2,101-1,101-2 respectively.Renewal process layer element is to become
The minimum unit of change has recorded the change to attributes information before and after each change unit；4) the corresponding update resultant layer elements of are most
There are 3 eventually, number is 102,103 and 104 respectively.Change reference layer Element Drawing after the completion of, generate renewal process layer element and
The process of update resultant layer element is realized automatically by computer program, mainly using right in ESRI ArcGIS Engine Component Galleries
The intersection (Intersect) of element layer and based on subtracting each other spatial operations such as (Erase), in addition to update reference layer element, year
The result that first library element and operation generate is sorted to be realized with logical process.It specifically comprises the following steps：
e1:Initializing system resources, the beginning of the year library obtained in change reference layer and the step a in the step e exist
Object reference in memory, initialization renewal process object container and update result object container；
e2:The element layer in the beginning of the year library and the element of the change reference layer are done into intersection operation, intersect the knot of gained
The all renewal process objects of fruit element, and be written into the renewal process object container；
e3:The element on all change reference layers is traversed, had altered reference layer element is copied into the update
In result object container；
e4:All renewal process objects are traversed, since the object is by change reference feature and beginning of the year library element phase
Friendship can get each renewal process object is wanted by which beginning of the year library element and change reference according to intersection operation result
Element intersection, according to this incidence relation to the identification code assignment rear before changing of renewal process object；
e5:Using the change reference layer element as search condition, space is executed with overlapping relation in beginning of the year library element layer
Search result element is generated a temporary layer by search；
e6:The temporary layer generated in step e5 and the change reference layer are executed into phase reducing, subtract each other the result of gained
Element is all respectively written into the renewal process object container and the update result object container；
e7:The pilot process object generated in the step e6 is changed into front and back identification code assignment；
e8:All renewal process objects are traversed, assignment is carried out to regeneration behavior；Wherein, modern behavior include without change,
Attribute changes and three kinds of pattern modifying.
e9:The data in the renewal process object container and the update result object container are written to correspondence successively
Database figure layer in, convert objects into element.
After the completion of element generates in renewal process layer and update resultant layer, need in renewal process layer and update resultant layer
All component attributes information carry out automatic business processing.Including rear attribute assignment before changing, recalculate area and automatic numbering three
A part.Figure of description Fig. 5 is beginning of the year library element, change reference layer element, change process layer element, update resultant layer element
Between Attribute Association relationship and reproduction process schematic diagram, it may also be said to be before changing after attribute assignment assignment method.Change
Front and back attribute assignment is made according to element identification code after the code of element identification before changing and change generated in renewal process layer
For Correlation Criteria, the attribute information of beginning of the year library element is copied to the attribute section before changing of the renewal process layer, it will
The attribute of the change reference layer element copies to attribute section after the change of the renewal process layer, by the change reference layer
The attribute of element copies in the attribute of the update resultant layer.And for the face of element in renewal process layer and update resultant layer
Product computational methods and automatic numbering process, it is identical as area computation method and numbering in beginning of the year library, belong to the prior art.
The achievement that superior land administration department submits after the completion of being worked due to land reclamation planning is update delta package, and
Non- entire land investigation database.Therefore renewal process layer element and update that will complete assignment in above-mentioned steps is needed to tie
Fruit layer element export is used as independent database.The process is that simple data export operates, and is the prior art, as long as selected defeated
Out position copies to institute's derived element in need in output position, and derived data can be SHP files or MDB
File.
Embodiment 2：
It elaborates to land investigation database update method in conjunction with Figure of description Fig. 2：Load beginning of the year library first, in advance
First define change reference layer corresponding with the element layer in beginning of the year library；Pre-defined change reference layer becomes for drawing
More reference feature；Pre-defined change reference layer Element Drawing rule；Angle of the update of land investigation database from element layer
It divides, administrative area change, parcel alteration and earth polygon change, the change form come out of single element layer can be divided into and drawn
Point, segmentation change can be divided into, merge change and comprehensive change, it is comprehensive to become the combination for being even more segmentation and merging change.From above-mentioned
As can be seen that for arbitrarily complicated change behavior can change reference layer on by reference feature with reference format come table
It reaches.For example, when two administrative villages merge and generate a new administrative village, merge as long as being drawn on the reference layer of administrative area
Administrative village range afterwards fills in administrative division code and the administrative area title of new administrative village to indicate the merging of current administrative division
Change.It is this to indicate the standard of change behavior with the mode for drawing element on change reference layer, exactly change Element Drawing
Rule.Changing reference layer and field item is defined according to actual information, and Figure of description Fig. 3 is change reference layer attribute
Structure defines schematic diagram, lists the example of setting change a reference layer and field item, and change reference layer is defined as administration
Change three reference layer, parcel alteration reference layer, earth polygon reference layer change reference layers in area.Then to each change reference layer
Structure definition is carried out, setting needs the field item changed, draws change reference feature.For example administrative area can be changed and be joined
Examine the fields items such as the administrative area code of layer setting, administrative area title；Parcel alteration reference layer setting ancestor four to, be located unit generation
The fields items such as code, the nature of right, land use, type of right, area of issuing licence, real estate unit number, record date；Earth polygon
Reference layer setting ground class coding, is located Unit code, ownership organization, is located unit name at ownership property, ownership Unit code
Claim, deducts ground class coding, deducts the fields items such as ground class coefficient, farmland types, disused arable land grade.Figure of description Fig. 4 is this hair
Logical relation schematic diagram at the beginning of next year between library element, change reference layer element, change process layer element, update resultant layer element
And change reference layer Element Drawing rule and define schematic diagram, give segmentation change in single element layer, merging is changed and comprehensive
It closes and changes all expression way, and give expression in detail after beginning of the year library element changes with corresponding change reference layer element,
Logical relation between the renewal process layer element and update resultant layer element of generation.Comprehensive become is even more to divide and merge change
Combination, segmentation is changed, merging change expression way is communicated with comprehensive change expression way and synthesis changes expression way relatively
Simply, so by taking the comprehensive change expression way of specific introduction as an example, expression way in single element layer is further described.Attached drawing
The coding occurred in Fig. 4 the only example illustrated example for convenience of description, the comprehensive meaning changed expressed by a column are as follows：1) at the beginning of
There are two adjacent figure spots in the element of library, and number is 100,101 respectively；Ground class coding is 011,013, and current alteration is
Because soil sign conversion delimit a certain range of soil inside 100 and 101 figure spots, by this soil class coding becomes 061；2).
The range of figure spot after drawing variation during earth polygon changes reference layer fills in the ground class coding 061 after variation, after filling in variation
Other attribute informations such as ownership property；3) once executes change, corresponding to generate four renewal process layers in renewal process layer
Element, number is 100-1,100-2,101-1,101-2 respectively.Renewal process layer element is changed minimum unit, note
The change to attributes information before and after each change unit is recorded；4) the corresponding update resultant layer elements of finally have 3, number point
It is not 102,103 and 104.After the completion of changing reference layer Element Drawing, renewal process layer element and update resultant layer element are generated
Process realized automatically by computer program, the main intersection using to element layer in ESRI ArcGIS Engine Component Galleries
(Intersect) and based on subtracting each other spatial operations such as (Erase), and to update reference layer element, beginning of the year library element and
The result that operation generates is sorted to be realized with logical process.It specifically comprises the following steps：
e1:Initializing system resources, the beginning of the year library obtained in change reference layer and the step a in the step e exist
Object reference in memory, initialization renewal process object container and update result object container；
e2:The element layer in the beginning of the year library and the element of the change reference layer are done into intersection operation, intersect the knot of gained
The all renewal process objects of fruit element, and be written into the renewal process object container；
e3:The element on all change reference layers is traversed, had altered reference layer element is copied into the update
In result object container；
e4:All renewal process objects are traversed, since the object is by change reference feature and beginning of the year library element phase
Friendship can get each renewal process object is wanted by which beginning of the year library element and change reference according to intersection operation result
Element intersection, according to this incidence relation to the identification code assignment rear before changing of renewal process object；
e5:Using the change reference layer element as search condition, space is executed with overlapping relation in beginning of the year library element layer
Search result element is generated a temporary layer by search；
e6:The temporary layer generated in step e5 and the change reference layer are executed into phase reducing, subtract each other the result of gained
Element is all respectively written into the renewal process object container and the update result object container；
e7:The pilot process object generated in the step e6 is changed into front and back identification code assignment；
e8:All renewal process objects are traversed, assignment is carried out to regeneration behavior；Wherein, modern behavior include without change,
Attribute changes and three kinds of pattern modifying.
e9:The data in the renewal process object container and the update result object container are written to correspondence successively
Database figure layer in, convert objects into element.
After the completion of element generates in renewal process layer and update resultant layer, need in renewal process layer and update resultant layer
All component attributes information carry out automatic business processing.Including rear attribute assignment before changing, recalculate area and automatic numbering three
A part.Figure of description Fig. 5 is beginning of the year library element, change reference layer element, change process layer element, update resultant layer element
Between Attribute Association relationship and reproduction process schematic diagram, it may also be said to be before changing after attribute assignment assignment method.Change
Front and back attribute assignment is made according to element identification code after the code of element identification before changing and change generated in renewal process layer
For Correlation Criteria, the attribute information of beginning of the year library element is copied to the attribute section before changing of the renewal process layer, it will
The attribute of the change reference layer element copies to attribute section after the change of the renewal process layer, by the change reference layer
The attribute of element copies in the attribute of the update resultant layer.And for the face of element in renewal process layer and update resultant layer
Product computational methods and automatic numbering process, it is identical as area computation method and numbering in beginning of the year library, belong to the prior art.
Update delta package needs these land change situations being written in year outbound after generating forms year end library, makes soil
Survey database Up-to-date state keeps newest.It is according to renewal process layer element that update delta package, which is written in the beginning of the year library,
Regeneration behavior changes the beginning of the year library accordingly, and update resultant layer element is written in beginning of the year library, year end library is generated.
As shown in Figure of description Fig. 6, update delta package is written to the beginning of the year library and includes the following steps：
H1. each element in the renewal process layer is traversed；
H2. judge whether that traversal terminates, terminate to traverse if "Yes", if "No" enters h3 steps；
H3. " regeneration behavior " is read, different operation is executed according to the regeneration behavior of the renewal process layer element；
When regeneration behavior is " no change ", without any processing, the next element of searching loop；
When regeneration behavior is " attribute change ", inquired in the beginning of the year library element layer by identification code before changing to be repaired
The element changed, by identification code after change from inquired in the update resultant layer change after element, by the pass of element after change
Key attribute information is written in the correspondence attribute of element to be modified, the next element of searching loop after execution operates successfully；Simply
Ground, which is said, is exactly, and obtains element to be modified and update resultant layer element by rear identification code before changing, will update resultant layer element category
Property is written in element to be modified；
When regeneration behavior is " pattern modifying ", first have to using element identification code before changing as condition in the beginning of the year library
Element layer searches for element before changing, and to be deleted want is inquired in the element layer in the beginning of the year library by element identification code before changing
Element, if inquiring element before changing, just by the element inquired delete, then using after change identification code as condition described
Update resultant layer search update result element；If not inquiring element before changing, it is directly entered with to be identified after change
Code is as condition the step for the update resultant layer searches for update result element；Into using after change identification code as condition
After the step for update resultant layer searches for update result element, then judge whether to deposit element after change, if can inquire
Element after the change is then written in the beginning of the year library by element after to change, and element after the change is tied in the update
It is deleted in fruit layer, after execution operates successfully, the next element of searching loop；If not inquiring element after change, direct time
Go through next element；
H4. until having traversed each renewal process object.
The present invention is based on change reference layers dexterously to solve land investigation number with the superimposed update method of beginning of the year data
Rollback problem can not be carried out to certain change operation by being updated in work according to library, and it is low also to solve full library superposition big data quantity operation efficiency
The problem of.When certain, which plays change operation, needs to retract, it need to only change the corresponding layer data that refers to and re-execute change process,
Operation is flexibly easy to operate.Data volume very little for the relatively entire land investigation database of data volume due to changing reference data,
During overlay analysis and spatial operation, the data volume of the operation participated in is superimposed well below beginning of the year library and year end library
Data volume saves a large amount of computing resources and activity duration, and database update working efficiency is very high, and social benefit is very high.
In conclusion only presently preferred embodiments of the present invention, is not used for limiting the scope of implementation of the present invention, it is all according to
The equivalent changes and modifications carried out by shape, construction, feature and spirit described in scope of the invention as claimed should all be included in this
In the right of invention.
Claims (8)
1. a kind of land investigation database update delta package generation method, which is characterized in that include the following steps：
A. load beginning of the year library starts the work of land investigation database update；
B. change reference layer corresponding with the element layer in beginning of the year library is pre-defined；
C. change reference layer Element Drawing rule is pre-defined；
D. according to soil more new material, the field item that setting needs change on the change reference layer in the step a is painted
System change reference feature；
E. the change reference layer figure corresponding with step a middle ages first library for change reference feature having been drawn in the step d
Layer is overlapped analysis and spatial operation, generates renewal process layer element and update resultant layer element；
F. attribute information automatic business processing is carried out to all renewal process layer elements in the step e and update resultant layer element；
G. update delta package will be generated through step f treated renewal process layer elements and update resultant layer element export.
2. land investigation database update delta package generation method according to claim 1, which is characterized in that the step
The generation method of renewal process layer element and update resultant layer element in e includes the following steps：
e1:Initializing system resources obtain the beginning of the year library in change reference layer and the step a in the step e in memory
In object reference, initialization renewal process object container and update result object container；
e2:The element layer in the beginning of the year library and the element of the change reference layer are done into intersection operation, the result for intersecting gained is wanted
The all renewal process objects of element, and be written into the renewal process object container；
e3:The element on all change reference layers is traversed, had altered reference layer element is copied into the update result
In object container；
e4:Traverse all renewal process objects, due to the object be by change reference feature and the beginning of the year library element intersection and
Come, each renewal process object can be got by which beginning of the year library element and change reference feature phase according to intersection operation result
It hands over, according to this incidence relation to the identification code assignment rear before changing of renewal process object；
e5:Using the change reference layer element as search condition, space search is executed with overlapping relation in beginning of the year library element layer,
Search result element is generated into a temporary layer；
e6:The temporary layer generated in step e5 and the change reference layer are executed into phase reducing, subtract each other the result element of gained
All it is respectively written into the renewal process object container and the update result object container；
e7:The pilot process object generated in the step e6 is changed into front and back identification code assignment；
e8:All renewal process objects are traversed, assignment is carried out to regeneration behavior；
e9:The data in the renewal process object container and the update result object container are written to corresponding number successively
According in the figure layer of library, element is converted objects into.
3. land investigation database update delta package generation method according to claim 2, it is characterised in that：The step
Regeneration behavior in e8 includes without change, attribute change and pattern modifying.
4. land investigation database update delta package generation method according to claim 1, it is characterised in that：The step
All renewal process layer elements and update resultant layer element are subjected to attribute information automatic business processing in f and include rear attribute before changing
Assignment recalculates three parts of area and automatic numbering.
5. land investigation database update delta package generation method according to claim 4, it is characterised in that：The change
The assignment method of front and back attribute assignment is, after the code of element identification before changing generated in the renewal process layer and change
Element identification code copies to the renewal process layer before changing as Correlation Criteria, by the attribute information of beginning of the year library element
The attribute of the change reference layer element is copied to attribute section after the change of the renewal process layer, by institute by attribute section
The attribute for stating change reference layer element copies in the attribute of the update resultant layer.
6. a kind of land investigation number based on any land investigation database update delta package generation methods of claim 1-5
According to library update method, which is characterized in that include the following steps：
A. load beginning of the year library starts the work of land investigation database update；
B. change reference layer corresponding with the element layer in beginning of the year library is pre-defined；
C. change reference layer Element Drawing rule is pre-defined；
D. according to soil more new material, the field item that setting needs change on the change reference layer in the step a is painted
System change reference feature；
E. the change reference layer figure corresponding with step a middle ages first library for change reference feature having been drawn in the step d
Layer is overlapped analysis and spatial operation, generates renewal process layer element and update resultant layer element；
F. attribute information automatic business processing is carried out to all renewal process layer elements in the step e and update resultant layer element；
G. it is to update delta package through step f treated renewal process layer elements and update resultant layer element；
H. the update delta package in the step g is written in the beginning of the year library, according to the more newline of renewal process layer element
To be changed accordingly the beginning of the year library, the update resultant layer element is written in the beginning of the year library, generates year end
Library.
7. land investigation database update method according to claim 6, which is characterized in that it is characterized in that：The step
Regeneration behavior in rapid h includes that regeneration behavior includes without change, attribute change and pattern modifying.
8. land investigation database update method according to claim 7, it is characterised in that：It is more newly-increased in the step h
Amount packet is written to the beginning of the year library and includes the following steps,
H1. each element in the renewal process layer is traversed；
H2. judge whether that traversal terminates, terminate to traverse if "Yes", if "No" enters h3 steps；
H3. " regeneration behavior " is read, different operation is executed according to the regeneration behavior of the renewal process layer element；
When regeneration behavior is " no change ", without any processing, the next element of searching loop；
When regeneration behavior is " attribute change ", inquired in the beginning of the year library element layer by identification code before changing to be modified
Element, by identification code after change after inquiring change in the update resultant layer element, the crucial of element after change is belonged to
Property information be written in the correspondence attribute of element to be modified, execution operate successfully after the next element of searching loop；
When regeneration behavior is " pattern modifying ", first have to using element identification code before changing as condition in the element in the beginning of the year library
Layer searches for element before changing, inquires element to be deleted in the element layer in the beginning of the year library by element identification code before changing, such as
Fruit inquires element before changing, just by the element inquired delete, then using after change identification code as condition in the update
Resultant layer search update result element；If not inquiring element before changing, it is directly entered to be made with identification code after change
It is that condition searches for the step for updating result element in the update resultant layer；Into using after change identification code as condition in institute
After the step for stating update resultant layer search update result element, then judge whether to deposit element after change, if change can be inquired
Element after the change is then written in the beginning of the year library by rear element, and by element after the change in the update resultant layer
Middle deletion, after execution operates successfully, the next element of searching loop；If not inquiring element after change, under directly traversing
One element；
H4. until having traversed each renewal process object.
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