CN111581267A - Object data storage method and device - Google Patents
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- CN111581267A CN111581267A CN202010290408.2A CN202010290408A CN111581267A CN 111581267 A CN111581267 A CN 111581267A CN 202010290408 A CN202010290408 A CN 202010290408A CN 111581267 A CN111581267 A CN 111581267A
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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 embodiment of the application discloses a method and a device for storing object data. The method comprises the following steps: acquiring a combination of attribute names included by each object in JavaScript object symbolic data; dividing the objects with the same attribute name combination into one class, and distributing corresponding attribute name marking information for each classified attribute name combination; converting attribute name information in the storage content by using attribute name marking information of respective classification for the pre-acquired storage content of the same classified object to obtain new storage content of each object; and saving the new storage content of each object.
Description
Technical Field
The present invention relates to the field of information processing, and in particular, to a method and an apparatus for storing object data.
Background
JSON (JavaScript Object Notation) is a lightweight data exchange format, in which an Object is represented by a key-value pair enclosed by parentheses, and a plurality of objects or values are represented by groups of numbers, and basic data types such as character strings, numbers, boolean values, and the like are also included. JSON is convenient for reading and writing, and is easy for machine analysis and generation.
In the related art, a JSON format may be used in a computer system to transmit and store data. JSON data represents an object by its attributes and values. When the object information is more, the problem of overlarge storage space occupation can occur.
Disclosure of Invention
In order to solve any technical problem, embodiments of the present application provide a method and an apparatus for storing object data.
In order to achieve the object of the embodiment of the present application, an embodiment of the present application provides 1a method for storing object data, including:
acquiring a combination of attribute names included by each object in JavaScript object symbolic data;
dividing the objects with the same attribute name combination into one class, and distributing corresponding attribute name marking information for each classified attribute name combination;
converting attribute name information in the storage content by using attribute name marking information of respective classification for the pre-acquired storage content of the same classified object to obtain new storage content of each object;
and saving the new storage content of each object.
An apparatus for storing object data, comprising:
the acquisition module is set to acquire the combination of the attribute names included by each object in the JavaScript object symbolic data;
the classification module is set to classify the objects with the same combination of attribute names into one class and distribute corresponding attribute name marking information for the combination of the attribute names of each class;
the conversion module is used for converting the attribute name information in the storage content by utilizing the attribute name marking information of each classification to the pre-acquired storage content of the same classified middle object to obtain the new storage content of each object;
and the storage module is used for storing the new storage content of each object.
A storage medium having a computer program stored therein, wherein the computer program is arranged to perform the method as described above when executed.
An electronic device comprising a memory having a computer program stored therein and a processor arranged to execute the computer program to perform the method as described above.
One of the above technical solutions has the following advantages or beneficial effects:
the method comprises the steps of obtaining attribute name combinations included by each object in JavaScript object symbolic data, dividing the objects with the same attribute name combinations into one class, distributing corresponding attribute name marking information for each classified attribute name combination, converting the attribute name information in the stored content of the pre-obtained objects in the same class by utilizing the attribute name marking information of each class to obtain new stored content of each object, storing the new stored content of each object, and achieving the purpose of reducing data repetition and improving the storage efficiency and the transmission efficiency by converting the attribute name combinations including a plurality of attribute names into the attribute name marks.
Additional features and advantages of the embodiments of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the application. The objectives and other advantages of the embodiments of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments of the present application and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and together with the examples of the embodiments of the present application do not constitute a limitation of the embodiments of the present application.
Fig. 1 is a flowchart of a method for storing object data according to an embodiment of the present disclosure;
fig. 2 is a structural diagram of a storage device for object data according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, in the embodiments of the present application, features in the embodiments and the examples may be arbitrarily combined with each other without conflict.
In the process of implementing the present application, the inventor conducts technical analysis on the related art, and finds that the related art has at least the following problems, including:
taking an array containing three structurally identical objects represented by the following JSON data format as an example, 3 objects are included in the following, and the identical attribute information includes f1, f2 and f 3; wherein f3 includes f31 and f 32.
The differentiated attribute values can be seen below:
as can be seen from the above example, the three object attributes (f1, f2, f3) contained in the array are identical, and only the values are different, the content of the attribute information occupies a large number of characters, and if the array contains more object data with the same structure, the wasted space of the attribute part is larger.
Based on the analysis, the application provides an improved object data storage method, and the object type structure data and the value data are separated, so that the problem of JSON data object attribute redundancy is solved, the space occupied by the same structure object attribute is reduced, the purpose of reducing data repetition is achieved, and the storage efficiency and the transmission efficiency are improved.
Fig. 1 is a flowchart of a method for storing object data according to an embodiment of the present application. As shown in fig. 1, the method shown in fig. 1 includes:
taking the attribute information of one object as an example, the attribute information is "f1": v1a ", where" f1 "is the attribute name and" v1a "is the attribute value.
by managing objects having a combination of the same attribute name as one category, occurrence of duplicate storage of attribute name information in stored contents in the category can be effectively reduced.
103, converting attribute name information in the storage content to obtain new storage content of each object by utilizing the attribute name marking information of each classification for the pre-acquired storage content of the objects in the same classification;
compared with the prior art that each attribute name of an object is recorded, the embodiment of the application uniformly records all attribute information through the attribute name mark, so that the storage space occupied by the attribute name information is effectively reduced, and the problem of repeated recording of the attribute names is effectively avoided.
And step 104, saving the new storage content of each object.
The method provided by the embodiment of the application obtains the combination of the attribute names included by each object in the JavaScript object symbolic data, divides the objects with the same combination of the attribute names into one class, allocates corresponding attribute name marking information for the combination of the attribute names of each class, converts the attribute name information in the stored content of the pre-obtained objects in the same class by using the attribute name marking information of each class to obtain the new stored content of each object, stores the new stored content of each object, and achieves the purpose of reducing data repetition and improving the storage efficiency and the transmission efficiency by converting the attribute name combination comprising a plurality of attribute names into the attribute name marking.
In an exemplary embodiment, the classifying the objects having the same combination of attribute names into one class includes:
acquiring the number of object types included by each object and the attribute name included by each object type;
if the number of the object types of the two objects is the same as the attribute names included in the object types, determining that the two objects are in the same class;
wherein, the attribute name label information of each classification comprises a first label and one or at least two second labels; wherein:
the first mark records all attribute names of the object;
the second flag records a property name included in one object type of the object.
The first flag may be an identifier of an array composed of all attribute names of the object, and the attribute names are f1, f2, f3, f31 and f32 respectively in the storage content shown above as an example, so that the data of the attribute names of the object are specifically as follows, "f" [ "f1", "f2", "f3", "f31", "f32" ], where f is the first flag.
The second mark is an identifier of data composed of attribute names included in each object type, and in the storage content shown above as an example, each object includes two object types, and one includes attribute names f1, f2, and f 3; the other included attribute is f31 and f32, respectively. The following labels may be employed, including: "t1" [0,1,2 ]; and "t2" [3,4 ]; wherein t1 and t2 are second identifiers, and the number in the array corresponding to each object type is the sequence information of the attribute name.
The information can be used for completing the feature extraction of the storage structure of the object, and providing an operation basis for the subsequent optimization of the storage structure.
In an exemplary embodiment, the converting the attribute name information in the storage content by using the attribute name tag information of each classification to obtain a new storage content of each object includes:
generating a metadata object of the attribute name of the classified object by using the attribute name marking information of each classification;
and according to the metadata object, converting a storage structure which adopts the combination of the attribute name and the attribute value in the storage content into a storage structure of the attribute name mark and all the attribute values to obtain new storage content.
Compared with the mode that the object is recorded by one or more groups of attribute information (including attribute names and attribute values) in the related art, the method and the device have the advantages that the attribute names are extracted independently, and the corresponding metadata structures are set for the attribute names, so that the stored content can be stored by marking the attribute names.
When writing an attribute value, the attribute value is written in the order of the attribute name combination corresponding to the attribute name flag information.
Upon subsequent reads, parsing of the content may be accomplished by obtaining the structure of the metadata.
In an exemplary embodiment, before converting the storage structure in which the combination of the attribute name and the attribute value is used in the storage content into the storage structure of the attribute name flag and all the attribute values, the method further includes:
determining code format information of the storage structure adopting the combination of the attribute name and the attribute value;
the converting the storage structure adopting the combination of the attribute name and the attribute value in the storage content into the storage structure of the attribute name mark and all the attribute values comprises the following steps:
and converting the storage structure in the storage content of each object according to the code format information.
In the process of converting the storage content, the attribute value is converted along the recording mode of the attribute information in the code format of the JSON data and the nesting relation between the object types, so that the uniformity of the JSON format is ensured.
The method provided by the embodiments of the present application is explained as follows:
step 201, storing the attributes of all objects in the data into an array;
wherein the same attribute name appears only once in the array, and the array is named as f;
taking the attributes in the storage content shown above as an example, the array after all the attributes are stored is as follows:
"f":["f1","f2","f3","f31","f32"]。
step 202, defining the structures of all object types in the data;
the attributes that an object type contains are determined using the defined attribute array subscripts.
Taking the storage content shown above as an example, the storage content includes two object types, wherein:
the first object type comprises three attributes of f1, f2 and f 3;
the second object type contains two properties, f31 and f 32.
Setting the designation of the first object type as t1, the subscripts of the three attributes in the array in step 201 are 0,1,2, respectively, so the first object type can be represented as "t1": 0,1,2
Setting the designation of the second object type as t2, the subscripts in the array of the two attributes in step 201 are 3,4, respectively, so the second object type can be expressed as "t2": 3,4
Step 203, merging the data defined in step 201 and step 202 into a metadata object, and the structure is as follows:
{
"f":["f1","f2","f3","f31","f32"],
"t1":[0,1,2],
"t2":[3,4]
}
step 204, converting all the attribute values of the original data object into an array, wherein the position of the attribute value in the array is the same as the position of the attribute in the object type defined in the previous step. The attribute value is the basic data type or the condition of the array, and is directly stored in the array, and the attribute value is the condition of the object and needs to be converted into the following format:
{
an object type name [ "attribute value 1", "attribute value 2",. ],
}
taking the storage content of a certain original object as an example for explanation, the content of the storage content includes:
{
"f31":"v31",
"f32":"v32"
}
after conversion:
{
"t2":["v31","v32"],
}
by adopting the above conversion mode, the data expressed above can be converted, and the converted storage content is as follows:
compared with the storage content in the related technology, the data storage and transmission efficiency is improved, and the structure of the data value part is more compact by extracting the data object structure part into the metadata, so that unnecessary attribute name repetition is reduced, the data occupation space is reduced. In addition, the converted new format keeps the structure of the original JSON data and can be easily converted with each other.
Fig. 2 is a flowchart of an object data storage device according to an embodiment of the present application. As shown in fig. 2, the apparatus shown in fig. 2 includes:
the acquisition module is set to acquire the combination of the attribute names included by each object in the JavaScript object symbolic data;
the classification module is set to classify the objects with the same combination of attribute names into one class and distribute corresponding attribute name marking information for the combination of the attribute names of each class;
the conversion module is used for converting the attribute name information in the storage content by utilizing the attribute name marking information of each classification to the pre-acquired storage content of the same classified middle object to obtain the new storage content of each object;
and the storage module is used for storing the new storage content of each object.
In one exemplary embodiment, the classification module includes:
an acquisition unit configured to acquire the number of object types included in each object and the attribute name included in each object type;
the determining unit is set to determine that the two objects are in the same class if the number of the object types of the two objects is the same as the attribute names included in the object types;
an assigning unit configured to assign attribute name tag information to each classified combination of attribute names, wherein the attribute name tag information includes one first tag and one or at least two second tags; wherein:
the first mark records all attribute names of the object;
the second flag records a property name included in one object type of the object.
In one exemplary embodiment, the conversion module includes:
a generation unit configured to generate a metadata object of an attribute name of the classified object using attribute name flag information of each classification;
and the conversion unit is set to convert the storage structure adopting the combination of the attribute name and the attribute value in the storage content into the storage structure of the attribute name mark and all the attribute values according to the metadata object to obtain new storage content.
In one exemplary embodiment, the apparatus further comprises:
a determining module configured to determine code format information of the storage structure using a combination of the attribute name and the attribute value;
and the conversion module is configured to convert the storage structure in the storage content of each object according to the code format information.
The device provided by the embodiment of the application acquires the combination of the attribute names included by each object in the JavaScript object symbolic data, divides the objects with the same combination of the attribute names into one class, allocates corresponding attribute name marking information for the combination of the attribute names of each class, converts the attribute name information in the stored content of the pre-acquired objects in the same class by using the attribute name marking information of each class to obtain new stored content of each object, stores the new stored content of each object, and achieves the purpose of reducing data repetition and improving the storage efficiency and the transmission efficiency by converting the attribute name combination comprising a plurality of attribute names into the attribute name marking.
A storage medium having a computer program stored therein, wherein the computer program is arranged to perform the method of any of the above when executed.
An electronic device comprising a memory having a computer program stored therein and a processor arranged to run the computer program to perform the method of any of the above.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Claims (10)
1. A method of storing object data, comprising:
acquiring a combination of attribute names included by each object in JavaScript object symbolic data;
dividing the objects with the same attribute name combination into one class, and distributing corresponding attribute name marking information for each classified attribute name combination;
converting attribute name information in the storage content by using attribute name marking information of respective classification for the pre-acquired storage content of the same classified object to obtain new storage content of each object;
and saving the new storage content of each object.
2. The method of claim 1, wherein:
the dividing of the objects having the same combination of attribute names into one class includes:
acquiring the number of object types included by each object and the attribute name included by each object type;
if the number of the object types of the two objects is the same as the attribute names included in the object types, determining that the two objects are in the same class;
wherein, the attribute name label information of each classification comprises a first label and one or at least two second labels; wherein:
the first mark records all attribute names of the object;
the second flag records a property name included in one object type of the object.
3. The method according to claim 1 or 2, wherein the converting the attribute name information in the storage content by using the attribute name tag information of each classification to obtain a new storage content of each object comprises:
generating a metadata object of the attribute name of the classified object by using the attribute name marking information of each classification;
and according to the metadata object, converting a storage structure which adopts the combination of the attribute name and the attribute value in the storage content into a storage structure of the attribute name mark and all the attribute values to obtain new storage content.
4. The method of claim 3, wherein:
before converting the storage structure adopting the combination of the attribute name and the attribute value in the storage content into the storage structure of the attribute name mark and all the attribute values, the method further comprises the following steps:
determining code format information of the storage structure adopting the combination of the attribute name and the attribute value;
the converting the storage structure adopting the combination of the attribute name and the attribute value in the storage content into the storage structure of the attribute name mark and all the attribute values comprises the following steps:
and converting the storage structure in the storage content of each object according to the code format information.
5. An apparatus for storing object data, comprising:
the acquisition module is set to acquire the combination of the attribute names included by each object in the JavaScript object symbolic data;
the classification module is set to classify the objects with the same combination of attribute names into one class and distribute corresponding attribute name marking information for the combination of the attribute names of each class;
the conversion module is used for converting the attribute name information in the storage content by utilizing the attribute name marking information of each classification to the pre-acquired storage content of the same classified middle object to obtain the new storage content of each object;
and the storage module is used for storing the new storage content of each object.
6. The apparatus of claim 5, wherein the classification module comprises:
an acquisition unit configured to acquire the number of object types included in each object and the attribute name included in each object type;
the determining unit is set to determine that the two objects are in the same class if the number of the object types of the two objects is the same as the attribute names included in the object types;
an assigning unit configured to assign attribute name tag information to each classified combination of attribute names, wherein the attribute name tag information includes one first tag and one or at least two second tags; wherein:
the first mark records all attribute names of the object;
the second flag records a property name included in one object type of the object.
7. The apparatus of claim 5 or 6, wherein the conversion module comprises:
a generation unit configured to generate a metadata object of an attribute name of the classified object using attribute name flag information of each classification;
and the conversion unit is set to convert the storage structure adopting the combination of the attribute name and the attribute value in the storage content into the storage structure of the attribute name mark and all the attribute values according to the metadata object to obtain new storage content.
8. The apparatus of claim 7, further comprising:
a determining module configured to determine code format information of the storage structure using a combination of the attribute name and the attribute value;
and the conversion module is configured to convert the storage structure in the storage content of each object according to the code format information.
9. A storage medium, in which a computer program is stored, wherein the computer program is arranged to perform the method of any of claims 1 to 4 when executed.
10. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, and wherein the processor is arranged to execute the computer program to perform the method of any of claims 1 to 4.
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Application publication date: 20200825 |