CN101000622A - Method and device for checking validity of expandable mark language mode - Google Patents

Abstract

The invention relates to a method and a device for checking the validity of an extensible markup language model in the field of Internet data services. The device includes: a Schema conversion module for converting the XML constructed according to the Schema into a database table structure; an XML information insertion module for inserting the converted XML information into the database with the table structure from top to bottom Middle; a verification module, used to verify whether the XML information meets the specification requirements of the Schema by using the constraint mechanism of the database during the process of inserting the XML information into the database with the table structure by the XML information insertion module. It may further include: a warning module, configured to issue a warning when the verification module verifies that the XML information does not meet the specification requirements of the Schema. The invention checks the correctness of the XML information conveniently and quickly by means of the powerful function of the current database technology, and ensures that the information meets the data legitimacy requirements when the XML is used for interface interaction between processes.

Description

A method and device for verifying the validity of an extensible markup language schema

technical field

The invention relates to the field of Internet data services, in particular to a method and device for checking the validity of an extensible markup language model.

Background technique

The semantic expression in XML (Extensible Markup Language) is more and more widely used in the current application software design, and many software use it to define the interaction format between interfaces. On the other hand, when the XML format is used to interact between processes, the server process often needs to perform Schema (mode, that is, a description of the organization of one or a group of XML files, and some constraints on its content. and semantics) checks.

However, due to the looseness of the XML language grammar, when programmers construct XML text information, it is often difficult to ensure its correctness at the beginning. Whether it meets the validity constraints of the corresponding Schema needs to be fully confirmed with the server. And often need to spend a lot of energy for this reason, and efficiency is very low.

Contents of the invention

Embodiments of the present invention provide a method and device for verifying the validity of an Extensible Markup Language Schema, which solves the problem that the prior art cannot guarantee correctness when constructing XML information.

Embodiments of the present invention are achieved through the following technical solutions:

An embodiment of the present invention provides a method for verifying the validity of an Extensible Markup Language schema, including:

Convert the schema Schema of Extensible Markup Language XML into a database table structure;

Inserting the converted XML information from top to bottom into the database with the table structure;

The constraint mechanism of the database is used to check whether the XML information satisfies the specification requirements of the Schema.

An embodiment of the present invention provides a device for verifying the validity of an Extensible Markup Language schema, including:

Mode Schema conversion module, used for converting the Extensible Markup Language XML constructed according to the Schema into a database table structure;

XML information insertion module, used to insert the converted XML information from top to bottom into the database with the table structure;

The verification module is used to verify whether the XML information meets the specification requirements of the Schema by using the constraint mechanism of the database during the process of inserting the XML information into the database with the table structure by the XML information insertion module.

As can be seen from the technical solution provided by the present invention above, the present invention converts the XML information into a database table structure, then inserts the XML information into the database with the table structure, and utilizes the existing functions of the database to realize the XML Check the validity of the schema. With the help of the powerful functions of the current database technology, the correctness of XML information can be checked conveniently and quickly, ensuring that the information meets the data legality requirements when using XML for interface interaction between processes.

Description of drawings

Fig. 1 is a kind of embodiment flowchart of method of the present invention;

Fig. 2 is a schematic diagram of a module of an embodiment of the device of the present invention.

Detailed ways

In the embodiment of the present invention, the Schema verification of XML information is handed over to the database for processing, that is, the XML tree structure constructed according to the Schema is converted into a table structure of the database, and the XML information is inserted into the database with the table structure, Use the existing functions of the database to verify whether the XML information meets the specification requirements of the Schema.

A specific implementation process of Embodiment 1 of the present invention is shown in Figure 1, including the following steps:

Step 1, converting the XML tree structure constructed according to the Schema that needs to be verified into the table structure of the database;

The characteristics of XML grammar are: an XML message is a tree structure composed of a series of elements, except the root element, other elements have a corresponding parent element, and an element may have zero or more child elements, so in XML In fact, a reflexive relationship is formed between the element entities, that is, the relationship between the parent element and the child element is 0-to-many, and both the parent element and the child element themselves are one element; elements in XML can have 0 or more Attributes, the relationship between element entities and attribute entities is a 0-to-many relationship;

According to the characteristics of the above XML syntax, the database table structure shown in the following table is constructed:

Using the above table structure, the XML tree structure constructed according to the Schema can be converted into a simple linear relationship between element entities and attribute entities and between element entities;

A specific example of the conversion process is as follows:

There is an XML Schema defined as follows:

<? xml version="1.0" encoding="UTF-8"? >

<xs:element name="name" type="xs:string"/>

<xs:element name="presence">

<xs:complexType>

<xs:sequence>

<xs:element ref="user"/>

</xs:sequence>

</xs:complexType>

</xs:element>

<xs:element name=″uri″type=″xs:string″/>

<xs:element name="user">

<xs:complexType>

<xs:sequence>

<xs:element ref="uri"/>

<xs:element ref="name"/>

</xs:sequence>

</xs:complexType>

</xs:element>

</xs:schema>

A corresponding XML document is:

<? xml version="1.0" encoding="UTF-8"? >

<presence>

<user>

<uri>sip:imsuser01＠cmcc.com</uri>

<name>cmcc</name>

</user>

</presence>

It can be seen that the Schema has a root element presence, which has a sub-element user, and there are two sub-elements under the user element: uri and name, which will be converted into information in the database as follows:

Element ID Parent Element ID Name Value

1 NULL presence NULL

2 1 1 user NULL

3 2 uri sip:imsuser01@cmcc.com

4 2 2 name name cmcc

Step 2, writing the above converted XML information from top to bottom into the database with the above table structure;

Since the parent element identifier in the element table is actually a foreign key of the element entity, and the element identifier in the attribute table is actually a foreign key of the attribute entity, in order to meet the foreign key constraint requirements of the data in the database, that is, the master-slave relationship requirement , so the top-level element must be inserted into the database first, and then the bottom-level element and its corresponding attribute information must be inserted;

Step 3, using various constraint mechanisms in the database to verify whether the XML information meets the specification requirements of the Schema;

If there is a failure in the process of completely inserting a piece of XML information into the database, it means that the XML information constructed above does not meet its Schema requirements and needs to be reconstructed; otherwise, it is correct.

The constraint mechanism in the database includes: attributes and elements are processed in different ways, the containment relationship between elements is satisfied, the value of some elements cannot be empty, some values can only have one element, and some element values can only are numbers, and/or some element values can only be strings, etc.

The situation where the XML information does not meet the Schema requirements during the verification process using various constraint mechanisms in the database includes: treating attributes as elements, reversing the containment relationship between elements, Empty value, only one element instead of one element, non-numeric value for only number element, and/or non-string value for only string element, etc. During the insertion process, when any of the above situations occurs, the insertion fails, indicating that the XML information does not meet the specification requirements of the Schema.

Step 4, when the XML information does not meet the specification requirements of the Schema, a warning is issued to prompt the user that the XML information does not meet the specification requirements of the Schema. This step is optional.

Embodiment 2 of the present invention provides a device for verifying the validity of an Extensible Markup Language Schema. A schematic diagram of a module of an embodiment of the device is shown in FIG. 2 , including:

The Schema conversion module is used to convert the XML constructed according to the Schema into a database table structure;

XML information insertion module, used to insert the converted XML information from top to bottom into the database with the table structure;

A verification module, configured to use various constraints of the database to verify whether the XML information satisfies the Schema when the XML information insertion module inserts the converted XML information from top to bottom into the database with the table structure specification requirements.

The device may further include:

The warning module is used to receive the verification result of the verification module, and issue a warning when the verification module verifies that the XML information does not meet the specification requirements of the Schema.

To sum up, the embodiment of the present invention realizes the verification of XML Schema validity, and with the help of the powerful functions of current database technology, it is convenient and fast to verify the correctness of XML information, ensuring that when using XML for interface interaction between processes, , so that the information meets the data legality requirements.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present invention can easily think of changes or Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (7)

1, a kind of method of checking validity of expandable mark language mode is characterized in that, comprising:

The Mode S chema of expandable mark language XML is converted to database table structure;

The top-down insertion of XML information after the described conversion is had in the database of described list structure;

Utilize the described XML information of tied mechanism verification of database whether to satisfy the code requirement of Schema.

2, the method for claim 1 is characterized in that, the method that described Schema with expandable mark language XML is converted to database table structure comprises:

To be converted between element entity and the attribute entities according to the XML tree of Schema structure and corresponding linear relationship table between the element entity.

3, the method for claim 1 is characterized in that, the method that the described tied mechanism of utilizing database comes the described XML information of verification whether to satisfy the code requirement of Schema comprises:

In that the insertion of the XML information after the described conversion is had in the data base procedure of described list structure,, show that then described XML information does not satisfy the code requirement of Schema if insert failure.

4, method as claimed in claim 3, it is characterized in that the situation of described insertion failure comprises: with attribute as unit usually handle, put upside down relation of inclusion between the element, can not for the element value of sky for empty, an element can only be arranged but not element, can only be for the value of the element of numeral nonnumeric and/or can only be for the value of the element of character string but not character string.

5, the method for claim 1 is characterized in that, when the described XML information of verification did not satisfy the code requirement of described Schema, described method further comprised:

Give a warning, the described XML information of prompting user does not satisfy the code requirement of described Schema.

6, a kind of device of checking validity of expandable mark language mode is characterized in that, comprising:

Mode S chema modular converter is used for the expandable mark language XML according to the Schema structure is converted to database table structure;

XML information insert module is used for the top-down insertion of XML information after the described conversion is had the database of described list structure;

The verification module is used in described XML information insert module described XML information being inserted and has the data base procedure of described list structure, utilizes the described XML information of tied mechanism verification of database whether to satisfy the code requirement of Schema.

7, device as claimed in claim 6 is characterized in that, described device also comprises:

Alert module is used to receive the check results of verification module, goes out in the calibration mode block check to give a warning when XML information does not satisfy the code requirement of Schema.