CN102902565A - Internal memory object loading device and method - Google Patents
Internal memory object loading device and method Download PDFInfo
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Abstract
The invention provides an internal memory object loading device which comprises a reading unit and a loading unit. The reading unit can read a default attribute loading relationship when an entity object needs loading from a storage system, wherein the attribute loading relationship comprises a congruent relationship between different scenes and attributes of the entity object under the different scenes. The loading unit obtains attribute values attributes of the entity object under the current scene from the storage system according to an attribute loading congruent relationship of the current scene to complete loading of the entity object. By means of the technical scheme, a loading technique of the entity object is improved, redundant loading contents are reduced, occupation of an internal memory space is saved, and input and output (IO) visiting and network transmission quantity is reduced. The invention further provides an internal memory object loading method.
Description
Technical field
The present invention relates to field of computer technology, in particular to a kind of memory object charger and a kind of memory object loading method.
Background technology
The modern management system adopts the mode of data access layer more, carries out loading and the persistence of internal memory entity object by ORMapping.The benefit that this mode is brought is: one deck data access layer is arranged between memory object and the storage system, decoupling zero entity object and storage system, be convenient to realize the system that storage system is irrelevant.Simultaneously, the complete object-oriented of Business Logic, its memory object has the complete concept of complete real world objects, and code is readable and ease for maintenance is all stronger.It is a kind of loading of full word section mapping that present object loads, namely in order to load an entity object from storage system, no matter the meeting scene loads its all fields.And special scenes often only needs its part attribute of access to the access of an object.This has just caused the redundancy of attribute field to load, and the redundant attribute that loads all is the waste to the special scenes system performance from the time and on the space.For example, sales order has 100 fields (F1 ~ F100), sales order submits to scene need to access wherein 30 fields, and (F1 ~ F30), the sales order audit needs 40 fields of access (F11 ~ F40), and adopt present load mode all can load 100 fields.
For avoiding Attribute Redundancy to load, present processing major way has: (1) directly accesses storage system (such as the mode of SQL query), loads corresponding data message.The data that this mode loads are non-structured, have broken the complete definition of object.(2) class of the sub-community set of definition primary object class, and set up new mapping relations.This mode, the class of the sub-property set that the needs definition is a large amount of.Simultaneously, above-mentioned dual mode all needs to revise code when the different branch of special scenes.For example sales order is submitted scene to, and branch 1 needs 30 fields of access, and when needing 31 fields of access in Xin Jia branch 2, mode (1) needs to adjust SQL query; And mode (2) needs to adjust the class definition of sub-community set.
Therefore, need a kind of memory object loading technique, can avoid Attribute Redundancy to load the elevator system performance.
Summary of the invention
The present invention just is being based on the problems referred to above, has proposed a kind of memory object loading technique, can avoid Attribute Redundancy to load, and realizes simple and easy.
In view of this, according to an aspect of the present invention, a kind of memory object charger is provided, comprise: reading unit, when need load entity object from storage system, read default attribute and load relation, wherein said attribute loads corresponding relation and comprises: the corresponding relation of different scenes and the attribute of described entity object under described different scenes; Loading unit according to the described attribute loading corresponding relation of current scene, obtains the property value of the attribute of described entity object under described current scene, to finish the loading of described entity object from described storage system.
Preset attribute and loaded relation.Under different scenes, identical entity object has different loading scheme (being the scheme that aforementioned attribute loads relation).Under current scene, can read the loading scheme corresponding with current scene and current entity object type, only load the property value of the attribute of needs loading according to loading scheme, and do not load the property value of non necessary attribute, so just avoid the loading of redundant attributes, saved taking of memory headroom.
In technique scheme, preferably, the described attribute that described reading unit reads loads corresponding relation and comprises master data relation and detailed relation, described master data relation comprises entity object sign, entity object type, scene and whether adopts the empty corresponding relation that loads between the attribute, and described detailed the relation comprises entity object sign, attribute and whether load corresponding relation between the attribute.
Whether the empty attribute that loads namely will carry out loading scheme of the present invention, is yes if void loads attribute, then only loads the property value of the attribute that needs, if empty loading attribute is no, then carries out whole loadings of attribute according to correlation technique.
In technique scheme, preferred, described loading unit also is used for if accessed attribute does not load corresponding property value, then replenishing the property value that loads all attributes that do not load in the described entity object when the attribute of the described entity object of access.
If the attribute of this access has exceeded the maximum magnitude of the attribute of last visit, then need all property values that do not load are all loaded, in order to can have access to the property value of all properties, avoid occuring access errors.
In technique scheme, preferred, described loading unit comprises: the mark subelement, improve mark for attribute accessed in described all attributes that do not load adds; Upgrade subelement, load corresponding relation according to the described described attribute of flag update that improves, mark in the described entity object is stated to some extent the attribute that improves mark whether the loading setup of attribute is yes.
Because this access has exceeded the maximum magnitude of the attribute of last visit, therefore the access profile that needs Update attribute, the void loading setup of attribute corresponding to attribute that will exceed part is yes, finishes the renewal that attribute loads corresponding relation, and the gradual perfection attribute loads the detailed data of corresponding relation.When accessing next time, can load simultaneously the property value that this exceeds the attribute of part like this, when guaranteeing that access is correct, also guarantee from storage system, to read the least possible information.
In technique scheme, preferred, when described loading unit is no for the void loading attribute at described entity object also, from described storage system, obtain the property value of all properties of described entity object.
According to another aspect of the invention, a kind of memory object loading method is provided, may further comprise the steps: when need load entity object from storage system, read default attribute and load relation, wherein said attribute loads corresponding relation and comprises: the corresponding relation of different scenes and the attribute of described entity object under described different scenes; Described attribute according to current scene loads corresponding relation, obtains the property value of the attribute of described entity object under described current scene from described storage system, to finish the loading of described entity object.
Preset attribute and loaded relation.Under different scenes, identical entity object has different loading schemes, under current scene, can read the loading scheme corresponding with current scene and current entity object type, only load the property value of the attribute of needs loading according to loading scheme, and do not load the property value of non necessary attribute, and so just avoided the loading of redundant attributes, saved taking of memory headroom.
In technique scheme, preferably, described attribute loads corresponding relation and comprises master data relation and detailed relation, described master data relation comprises entity object sign, entity object type, scene and whether adopts the empty corresponding relation that loads between the attribute, and described detailed the relation comprises entity object sign, attribute and whether load corresponding relation between the attribute.
Whether the empty attribute that loads namely will carry out loading scheme of the present invention, is yes if void loads attribute, then only loads the property value of the attribute that needs, if empty loading attribute is no, then loads the property value of whole attributes according to correlation technique.
In technique scheme, preferred, further can comprise: access the attribute in the described entity object, if accessed attribute does not load corresponding property value, then replenish the property value that loads all attributes that do not load in the described entity object.
If the attribute of this access has exceeded the maximum magnitude of the attribute of last visit, then need all property values that do not load are all loaded, in order to can have access to the property value of all properties, avoid occuring access errors.
In technique scheme, preferred, can also comprise: improve mark for attribute accessed in described all attributes that do not load adds; Load corresponding relation according to the described described attribute of flag update that improves, mark in the described entity object is stated to some extent the attribute that improves mark whether the loading setup of attribute is yes.
Because this access has exceeded the maximum magnitude of the attribute of last visit, therefore the access profile that needs Update attribute, to exceed the attribute of part corresponding whether the loading setup of attribute be yes, finish the renewal that attribute loads corresponding relation, the detailed data of gradual perfection attribute loading corresponding relation.When accessing next time, can load simultaneously the property value that this exceeds the attribute of part like this, when guaranteeing that access is correct, also guarantee from storage system, to read the least possible information.
In above-mentioned arbitrary technical scheme, preferred, when to load attribute be no, from described storage system, obtain the property value of all properties of described entity object in the void of described entity object.
The present invention has improved existing entity object loading technique, has reduced redundant loading content, has saved taking of memory headroom, and then has reduced IO access and Internet Transmission, has promoted system performance.
Description of drawings
Fig. 1 shows the according to an embodiment of the invention block diagram of memory object charger;
Fig. 2 shows the process flow diagram of memory object loading method according to an embodiment of the invention;
Fig. 3 shows the process flow diagram of memory object loading method according to still another embodiment of the invention;
Fig. 4 shows the process flow diagram of memory object loading method according to still another embodiment of the invention.
Embodiment
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments the present invention is further described in detail.
Set forth in the following description a lot of details so that fully understand the present invention, still, the present invention can also adopt other to be different from other modes described here and implement, and therefore, the present invention is not limited to the restriction of following public specific embodiment.
Fig. 1 shows the according to an embodiment of the invention block diagram of memory object charger.
As shown in Figure 1, memory object charger 100 comprises according to an embodiment of the invention: reading unit 102, when need load entity object from storage system, read default attribute and load relation, wherein said attribute loads corresponding relation and comprises: the corresponding relation of different scenes and the attribute of described entity object under described different scenes; Loading unit 104 according to the described attribute loading corresponding relation of current scene, obtains the property value of the attribute of described entity object under described current scene, to finish the loading of described entity object from described storage system.
Preset attribute and loaded relation.Under different scenes, identical entity object has different loading schemes, under current scene, can read the loading scheme corresponding with current scene and current entity object type, only load the property value of the attribute of needs loading according to loading scheme, and do not load the property value of non necessary attribute, and so just avoided the loading of redundant attributes, saved taking of memory headroom.
In technique scheme, preferably, the described attribute that described reading unit 102 reads loads corresponding relation and comprises master data relation and detailed relation, described master data relation comprises entity object sign, entity object type, scene and whether adopts the empty corresponding relation that loads between the attribute, and described detailed the relation comprises entity object sign, attribute and whether load corresponding relation between the attribute.
Whether the empty attribute that loads namely will carry out loading scheme of the present invention, is yes if void loads attribute, then only loads the property value of the attribute that needs, if empty loading attribute is no, then carries out whole loadings of attribute according to correlation technique.
In technique scheme, preferred, described loading unit 104 also is used for if accessed attribute does not load corresponding property value, then replenishing the property value that loads all attributes that do not load in the described entity object when the attribute of the described entity object of access.
If the attribute of this access has exceeded the maximum magnitude of the attribute of last visit, then need all property values that do not load are all loaded, in order to can have access to the property value of all properties, avoid occuring access errors.
In technique scheme, preferred, described loading unit 104 comprises: mark subelement 1042, improve mark for attribute accessed in described all attributes that do not load adds; Upgrade subelement 1044, load corresponding relation according to the described described attribute of flag update that improves, with mark in the described entity object state to some extent the attribute that improves mark corresponding whether the loading setup of attribute is yes.
Because this access has exceeded the maximum magnitude of the attribute of last visit, therefore the access profile that needs Update attribute, to exceed the attribute of part corresponding whether the loading setup of attribute be yes, finish the renewal that attribute loads corresponding relation, the detailed data of gradual perfection attribute loading corresponding relation.When accessing next time, can load simultaneously the property value that this exceeds the attribute of part like this, when guaranteeing that access is correct, also guarantee from storage system, to read the least possible information.
In technique scheme, preferred, when described loading unit 104 is no for the void loading attribute at described entity object also, from described storage system, obtain the property value of all properties of described entity object.
According to memory object improvement of loading unit of the present invention existing entity object loading technique, reduced redundant loading content, saved taking of memory headroom, and then reduced IO access and Internet Transmission, promoted system performance.
Fig. 2 shows the process flow diagram of memory object loading method according to an embodiment of the invention.
As shown in Figure 2, memory object loading method according to an embodiment of the invention, may further comprise the steps: step 202, when need load entity object from storage system, read default attribute and load relation, wherein attribute loads corresponding relation and comprises: the corresponding relation of different scenes and the attribute of entity object under different scenes; Step 204 according to the attribute loading corresponding relation of current scene, is obtained the property value of the attribute of entity object under current scene, to finish the loading of entity object from storage system.
Preset attribute and loaded relation, under different scenes, identical entity object has different loading schemes, under current scene, can read the loading scheme corresponding with current scene and current entity object type, only load the property value of the attribute of needs loading according to loading scheme, and do not load the property value of non necessary attribute, so just avoid the loading of redundant attributes, saved taking of memory headroom.
In technique scheme, preferably, described attribute loads corresponding relation and comprises master data relation and detailed relation, described master data relation comprises entity object sign, entity object type, scene and whether adopts the empty corresponding relation that loads between the attribute, and described detailed the relation comprises entity object sign, attribute and whether load corresponding relation between the attribute.
Whether the empty attribute that loads namely will carry out loading scheme of the present invention, is yes if void loads attribute, then only loads the property value of the attribute that needs, if empty loading attribute is no, then loads the property value of whole attributes according to correlation technique.
In technique scheme, preferred, further can comprise: access the attribute in the described entity object, if accessed attribute does not load corresponding property value, then replenish the property value that loads all attributes that do not load in the described entity object.
If the attribute of this access has exceeded the maximum magnitude of the attribute of last visit, then need all property values that do not load are all loaded, in order to can have access to the property value of all properties, avoid occuring access errors.
In technique scheme, preferred, can also comprise: improve mark for attribute accessed in described all attributes that do not load adds; Load corresponding relation according to the described described attribute of flag update that improves, mark in the described entity object is stated to some extent the attribute that improves mark whether the loading setup of attribute is yes.
Because this access has exceeded the maximum magnitude of the attribute of last visit, therefore the access profile that needs Update attribute, to exceed the attribute of part corresponding whether the loading setup of attribute be yes, finish the renewal that attribute loads corresponding relation, the detailed data of gradual perfection attribute loading corresponding relation.When accessing next time, can load simultaneously the property value that this exceeds the attribute of part like this, when guaranteeing that access is correct, also guarantee from storage system, to read the least possible information.
In above-mentioned arbitrary technical scheme, preferred, when to load attribute be no, from described storage system, obtain the property value of all properties of described entity object in the void of described entity object.
Fig. 3 shows the process flow diagram of memory object loading method according to still another embodiment of the invention.
Significant difference according to the load mode in memory object loading method of the present invention and the correlation technique is: when loading entity object, according to the different scenes that load, only load the object that the necessary attribute of current scene makes up complete concept, the property value that current scene need not to access is set to sky.Scene and the corresponding relation that loads attribute are referred to as " attribute loading scheme " or " attribute loads relation ".During the empty loading of object, load first by this relation, for example sales order is submitted scene to, by " attribute loading scheme ", loads F1..F30 totally 30 fields.
When special scenes enter different branch the time, for example sales order is submitted to and to be entered branch 2, when needing the 31st field of access, carries out the additional loading of sales order this moment.Can load 100 complete fields, and start from improving process.After whole branch 2 finishes, accessed 3 fields if monitor totally more, then sales order being submitted to " the attribute loading scheme " of scene perfect is 33 fields.So next sales order is submitted the first loading of scene to, will load 33 field values and make up the object of complete concept.Bulk treatment process according to memory object loading method of the present invention is as follows:
Describe the treatment scheme of Fig. 3 in detail below in conjunction with Fig. 4.
In step 402, reading attributes loads corresponding relation (being the attribute loading scheme).
Before storage system loading object, read " attribute loading scheme " by [entity object type] and [scene]." attribute loading scheme " described the relation of scene and object properties.Shown in following table " attribute loading scheme ":
Attribute loading scheme master data:
| Scheme ID | The entity object type | Scene | Whether void loads |
| VLS01 | Sales order | Submit to | Be |
| VLS02 | Sales order | Audit | Be |
Attribute loading scheme detailed data:
| Scheme ID | Attribute-bit | Whether load |
| VLS01 | F1 | Be |
| VLS01 | F2 | Be |
| ... | ... | ... |
| VLS01 | F30 | Be |
| VLS02 | F21 | Be |
| VLS02 | F22 | Be |
| ... | ... | ... |
Determining whether needs empty the loading, if, then carry out step 404, if not, then enter step 406.Judge [whether void loads] in " attribute loading scheme ".If void is loaded as no, then load object by original mode, be then to carry out empty the loading if void is loaded as.
The main cause that the whether empty configuration that loads is provided be empty load the lifting effect of performance in the situation that field attribute the more more obviously, otherwise effect is less.And special scenes also may exist the needs loading near the situation of full word section.Therefore, provide the configuration whether void loads.
In step 406, load the property value (the full loading) of the loading attribute in whole entity objects, namely load whole fields.
In step 404, only load in whole entity objects to arrange whether load the property value that attribute is the loading attribute that is.Reading attributes loading scheme detailed data, according to the loading attribute that configures in the detailed data, the access storage system is obtained the association attributes value information.[sales order] [submission] scene for example.Need to load F1, F2 ... F30 property value.
For example, storage system is relevant database, and the structured query sentence (SQL) of 30 attributes of access is similar as follows:
Select F1, F2 ... F30 from sales order.
After getting access to information, be configured to the memory object of sales order.The property value of sales order memory object (only giving an example) as shown in the table:
| Attribute-name | Property value | Explanation |
| Whether void loads | True | System field |
| Whether from perfect | False | System field |
| Loading scheme | VLS01 | System field |
| F1 | Concrete traffic value | Load |
| F2 | Concrete traffic value | Load |
| ... | ... | ... |
| F30 | Concrete traffic value | Load |
| F31 | NULL | Do not load |
| F32 | NULL | Do not load |
| ... | ... | ... |
| F100 | NULL | Do not load |
From upper table, as can be known, although only read the least possible information from storage system, but still made up complete memory object.According to the attribute loading scheme of this object in current scene, F31 ... F100 can not have access to, and therefore need not to load, thereby has reduced the loading data redundancy, thereby saved space and IO visit capacity and transmission volume, and then promoted performance.
In step 408, the access object attribute.
Access object has 3 kinds of different entrance situations, as above figure
(1) void is loaded as noly, enters from step 406.The attribute access of this moment is with as broad as long before the employing present technique.
(2) void is loaded as and is and certainly improves to be no, enters from step 404.There are two kinds of situations:
A) attribute loads.Normal access.
B) attribute does not load, and enters step 410.Illustrate to have entered and be different from the branch that " attribute loading scheme " comprises.All do not load attribute to replenish loading this moment, and completion does not load attribute, and mark memory object [certainly perfect]=True.Memory object changes as shown in the table:
| Attribute-name | Property value | Explanation |
| Whether void loads | True | System field |
| Whether from perfect | True | System field |
| Loading scheme | VLS01 | System field |
| F1 | Concrete traffic value | Load |
| F2 | Concrete traffic value | Load |
| .... | ... | |
| F30 | Concrete traffic value | Load |
| F31 | Concrete traffic value | Load (replenish and load) |
| F32 | Concrete traffic value | Load (replenish and load) |
| .... | ... | ... |
| F100 | Concrete traffic value | Load (replenish and load) |
(3) plants situation below the follow-up attribute access, ginseng.
(3) void is loaded as and is and certainly improves to be yes, enters from step 410.
If a) access attribute loads for replenishing, then append the detailed data of attribute loading scheme.For example, sales order has been submitted scene access to the attribute of additional loading " F31 " and " F35 ", then the detailed data behind the automatic perfect scheme is as follows:
| Scheme ID | Attribute-bit | Whether load | Explanation |
| VLS01 | F1 | Be | |
| VLS01 | F2 | Be | |
| ... | ..... | ... | |
| VLS01 | F30 | Be | |
| VLS01 | F31 | Be | From perfect |
| VLS01 | F35 | Be | From perfect |
| VLS02 | F21 | Be | |
| VLS02 | F22 | Be | |
| ... | ... | ... |
B) because the property value of entity object has all replenished, so subsequent access and situation (1) are as broad as long.
In step 412, judge whether specific object loads.
If the void of entity object is loaded as no and certainly improves as not comprising in no and the loading scheme, then determine not load, enter step 410, otherwise for loading, enter step 414.
In step 410, replenish and load (mark is from perfect).Situation (2) situation (b) is described as described above.
In step 414, judge whether from perfect, if certainly perfect, then enter step 416, process following two parts:
If the attribute of current accessed loads for replenishing, then the detailed data of perfect " attribute loading scheme " (a) is described such as top situation (3).Otherwise, by normal attribute access.If not certainly perfect, then finish this flow process.
In step 416, improve the attribute loading scheme.
Perfect content mainly comprises two parts content:
(1) move the abundant of branch according to production environment, the detailed data of gradual perfection attribute loading scheme is such as (a) middle description of top situation (3).
(2) when the loading community set of attribute loading scheme, gradual perfection, so that the performance optimization effect no longer obviously the time, to be adjusted into the attribute loading scheme automatically " whether empty the loading " be no.When storage system is relational database,, when needing the whole memory page of access, automatically adjust " whether void loads " if read the property value that needs loading.
In sum, the present invention has improved existing entity object loading technique, has reduced redundant loading content, has saved taking of memory headroom, and then has reduced IO access and Internet Transmission, has promoted system performance.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a memory object charger is characterized in that, comprising:
Reading unit when need load entity object from storage system, reads default attribute and loads relation, and wherein said attribute loads corresponding relation and comprises: the corresponding relation of different scenes and the attribute of described entity object under described different scenes;
Loading unit according to the described attribute loading corresponding relation of current scene, obtains the property value of the attribute of described entity object under described current scene, to finish the loading of described entity object from described storage system.
2. memory object charger according to claim 1, it is characterized in that, the described attribute that described reading unit reads loads corresponding relation and comprises master data relation and detailed relation, described master data relation comprises entity object sign, entity object type, scene and whether adopts the empty corresponding relation that loads between the attribute, and described detailed the relation comprises entity object sign, attribute and whether load corresponding relation between the attribute.
3. memory object charger according to claim 2, it is characterized in that, described loading unit also is used for if accessed attribute does not load corresponding property value, then replenishing the property value that loads all attributes that do not load in the described entity object when the attribute of the described entity object of access.
4. memory object charger according to claim 3 is characterized in that, described loading unit comprises:
The mark subelement improves mark for attribute accessed in described all attributes that do not load adds;
Upgrade subelement, load corresponding relation according to the described described attribute of flag update that improves, mark in the described entity object is stated to some extent the attribute that improves mark whether the loading setup of attribute is yes.
5. each described memory object charger in 4 according to claim 2, it is characterized in that, when described loading unit is no for the void loading attribute at described entity object also, from described storage system, obtain the property value of all properties of described entity object.
6. a memory object loading method is characterized in that, may further comprise the steps:
When need load entity object from storage system, read default attribute and load relation, wherein said attribute loads corresponding relation and comprises: the corresponding relation of different scenes and the attribute of described entity object under described different scenes;
Described attribute according to current scene loads corresponding relation, obtains the property value of the attribute of described entity object under described current scene from described storage system, to finish the loading of described entity object.
7. memory object loading method according to claim 6, it is characterized in that, described attribute loads corresponding relation and comprises master data relation and detailed relation, described master data relation comprises entity object sign, entity object type, scene and whether adopts the empty corresponding relation that loads between the attribute, and described detailed the relation comprises entity object sign, attribute and whether load corresponding relation between the attribute.
8. memory object loading method according to claim 7, it is characterized in that, further comprise: access the attribute in the described entity object, if accessed attribute does not load corresponding property value, then replenish the property value that loads all attributes that do not load in the described entity object.
9. memory object loading method according to claim 8 is characterized in that, also comprises:
For adding, attribute accessed in described all attributes that do not load improves mark;
Load corresponding relation according to the described described attribute of flag update that improves, mark in the described entity object is stated to some extent the attribute that improves mark whether the loading setup of attribute is yes.
10. each described memory object loading method in 9 according to claim 7 is characterized in that, when to load attribute be no, obtains the property value of all properties of described entity object in the void of described entity object from described storage system.
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