JP2010152650A - Xml document distribution system, server therefor, reception terminal therefor, xml document distribution method, and program therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an XML document distribution system and an XML document distribution method, capable of reducing a transferred data volume, without impairing comfortable service enjoyed by a user. <P>SOLUTION: The XML document distribution system 1 includes an XML document distribution server 100 capable of distributing an XML document via a network 300, and a reception terminal 200 capable of receiving the XML document. The XML document distribution server 100 includes a compiler 110 for preparing a compile-finished XML document 11, by converting a specified character sequence of a tag or the like included in the XML document 10, into a specified code such as a control code. The reception terminal 200 includes a compile-finished XML parser 210 of elucidating the compile-finished XML document 11 received via the network 300, and of acquiring a data included in the compile-finished XML document 11. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an XML document delivery system, its server, its receiving terminal, an XML document delivery method, and its program, and in particular, an XML document delivery system that uses a communication method of a relatively narrow band such as mobile communication, its server, and its The present invention relates to a receiving terminal, an XML document distribution method, and a program thereof.

  In recent years, XML (Extensible Markup Language) exists as a markup language for describing the meaning and structure of documents and other data. XML is a language developed as a subset of SGML (Standard Generalized Markup Language), and has features such that users can freely define tags compared to HTML (Hyper Text Markup Language). In recent years, it has attracted attention particularly in the field of digital content distribution (see, for example, Patent Document 1 shown below).

  However, the specification of XML is enormous and complicated. For this reason, the document described in XML becomes redundant, and as a result, the data amount of the document described in XML increases. For this reason, there has been a problem that XML is not suitable for narrowband communication with a relatively small throughput such as mobile communication.

  Therefore, conventionally, a technique for reducing the data amount of an XML document to be transferred by encoding a redundantly described XML document has been proposed (see, for example, Patent Document 2).

Special Table 2007-523417 JP-T-2004-518231

  However, the technology for encoding and transferring an XML document requires a function for decoding the XML document encoded by the information processing terminal on the receiving side. For this reason, when an information processing apparatus having a relatively small information processing capability such as a mobile phone or a PDA (Personal Digital Assistant) is used for the receiving terminal, the load on the receiving terminal increases, and as a result, the information is provided to the user. There was a problem that the comfort of the digital content distribution service was impaired.

  Accordingly, the present invention has been made in view of the above problems, and an XML document distribution system capable of reducing the amount of data to be transferred without impairing the comfort of services that can be enjoyed by the user, its server, and its reception It is an object to provide a terminal, an XML document distribution method, and a program thereof.

  To achieve this object, an XML document delivery system according to the present invention is an XML document delivery system comprising a server capable of delivering an XML document over a network and a receiving terminal capable of receiving the XML document, The server includes a compiler that creates a compiled XML document by converting a specific character string included in the XML document into a specific code, and the receiving terminal receives the compiled XML document received via the network. It includes a parser that interprets and acquires data included in the compiled XML document.

  The XML document delivery system according to the present invention described above is characterized in that the specific code is a control code or a character code string made up of a plurality of character codes.

  The XML document distribution system according to the present invention described above is characterized in that the specific character string includes at least one of a tag, a space, and a line feed.

  The above-described XML document delivery system according to the present invention is characterized in that the receiving terminal holds a schema for the XML document, and the parser interprets the compiled XML document using the schema.

  In the XML document delivery system according to the present invention described above, the compiler converts the specific character string included in the XML document into the specific code according to a predetermined grammar, and the parser converts the grammar into the grammar. In principle, the compiled XML document is interpreted.

  The above-described XML document delivery system according to the present invention is characterized in that the grammar includes a rule that cites a duplicate description in the XML document.

  The server according to the present invention is a server capable of delivering an XML document via a network, and is a compiler that creates a compiled XML document by converting a specific character string included in the XML document into a specific code. And the compiled XML document is distributed via the network.

  The server according to the present invention described above is characterized in that the specific code is a control code or a character code string composed of a plurality of character codes.

  The server according to the present invention described above is characterized in that the specific character string includes at least one of a tag, a space, and a line feed.

  In the server according to the present invention described above, the compiler converts the specific character string included in the XML document into the specific code in accordance with a predetermined grammar.

  The server according to the present invention described above is characterized in that the grammar includes a rule that cites a duplicate description in the XML document.

  In addition, the receiving terminal according to the present invention can receive a compiled XML document from a server that distributes a compiled XML document created by converting a specific character string included in the XML document into a specific code via a network. A receiving terminal includes a parser that interprets the compiled XML document received via the network and acquires data included in the compiled XML document.

  The receiving terminal according to the present invention described above is characterized in that the specific code is a control code or a character code string made up of a plurality of character codes.

  In the receiving terminal according to the present invention described above, the specific character string includes at least one of a tag, a space, and a line feed.

  The receiving terminal according to the present invention includes a schema holding unit that holds a schema for the XML document, and the parser interprets the compiled XML document using the schema.

  In the receiving terminal according to the present invention, the compiled XML document is described by converting the specific character string into the specific code in accordance with a predetermined grammar, and the parser includes the grammar. In principle, the compiled XML document is interpreted.

  The receiving terminal according to the present invention described above is characterized in that the grammar includes a rule that cites a duplicate description in the XML document.

  The XML document distribution method according to the present invention is an XML document distribution method for distributing an XML document via a network, and a specific character string included in the XML document is converted into a specific code on the distribution side and compiled. A compiling step for creating an XML document, and an interpreting step for interpreting the compiled XML document on the receiving side to obtain data included in the compiled XML document are included.

  The above-described XML document delivery method according to the present invention is characterized in that the specific code is a control code or a character code string made up of a plurality of character codes.

  The XML document delivery method according to the present invention described above is characterized in that the specific character string includes at least one of a tag, a space, and a line feed.

  In the XML document delivery method according to the present invention described above, the receiving side holds a schema for the XML document, and the interpreting step interprets the compiled XML document using the schema.

  In the XML document delivery method according to the present invention described above, the compiling step converts the specific character string included in the XML document into the specific code according to a predetermined grammar, and the interpreting step includes The compiled XML document is interpreted in accordance with the grammar.

  The above-described XML document delivery method according to the present invention is characterized in that the grammar includes a rule for quoting duplicate descriptions in the XML document.

  The XML document delivery method according to the present invention includes a delivery request step in which the receiving side requests delivery of the compiled XML document to the delivery side, and the compiling step is requested to deliver the compiled XML document. In this case, the compiled XML document is created by converting the specific character string included in the XML document into the specific code.

  The program according to the present invention is a program for causing a server capable of delivering an XML document via a network to function, and is a compiled XML document obtained by converting a specific character string included in the XML document into a specific code. The server is caused to execute a compilation process for generating

  In addition, the program according to the present invention can receive a compiled XML document from a server that distributes the compiled XML document created by converting a specific character string included in the XML document into a specific code via a network. A program for causing a terminal to function, and interpreting the compiled XML document received from the server via the network and executing interpretation processing on the receiving terminal to acquire data included in the compiled XML document Let

  According to the present invention, in order to convert a specific character string in an XML document into a specific code, for example, by using a shorter code for the specific code than the character string to be converted, the data amount of the XML document to be distributed can be reduced. It becomes possible to reduce. Further, since the terminal on the receiving side can directly interpret the compiled XML document in which a specific character string is converted into a specific code, it is possible to avoid a reduction in throughput on the receiving side. . As a result, it is possible to realize an XML document distribution system, its server, its receiving terminal, an XML document distribution method, and its program that can reduce the amount of data transferred without impairing the comfort of services that can be enjoyed by the user. it can.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings. In the following description, each drawing merely schematically shows a positional relationship or the like to the extent that the content of the present invention can be understood. Therefore, the present invention is limited only to the content illustrated in each drawing. It is not something. Moreover, the numerical value illustrated below is only a suitable example of this invention, Therefore, this invention is not limited to the illustrated numerical value. Also, the digital content that can be distributed by the XML document distribution system shown below is not limited to the XML document, and various digital contents can be distributed.

(Constitution)
FIG. 1 is a block diagram showing a schematic configuration of an XML document distribution system 1 according to this embodiment. As shown in FIG. 1, an XML document distribution system 1 according to the present embodiment includes digital contents such as i-αppli (registered trademark) and various data and programs necessary for executing the digital contents (hereinafter, all of them are collected together). XML document distribution server 100 that distributes digital content), and one or more receiving terminals 200 that respectively receive the digital content distributed from XML document distribution server 100. The XML document distribution server 100 and the receiving terminal 200 are connected via a network 300 including a narrowband communication network such as a mobile communication network or a PHS (Personal Handy-phone System) communication network. Note that the network 300 may include a communication network such as a local area network (LAN), a wide area network (WAN), a dedicated line, or a public line as appropriate. Needless to say, the network 300 according to the present embodiment is not limited to including the narrowband communication network as described above, and various networks can be applied.

  The XML document distribution server 100 includes, for example, one or more information processing apparatuses such as a server and a workstation, and an external or built-in storage (not shown) that stores various data and programs. The digital content to be requested is distributed to the receiving terminal 200 by a method that responds to a distribution request from 200, that is, a pull-type communication method. However, the present invention is not limited to this, and the target digital content may be distributed to the receiving terminal 200 by, for example, a push communication method.

  The receiving terminal 200 is an information processing terminal such as a mobile phone (including a PHS terminal), a PDA, or a personal computer (hereinafter abbreviated as a PC), and receives various digital contents provided from the XML document distribution server 100. By executing predetermined processing, the user can enjoy various services provided by the XML document distribution system 1.

  Here, the digital content distributed to the receiving terminal 200 by the XML document distribution server 100 includes, for example, data described in XML (hereinafter referred to as an XML document) 10. The XML document 10 is created or updated using a PC or the like by a creator of digital content, for example. The created or updated XML document 10 is input to the XML document distribution server 100 via a predetermined line or medium, for example. The input XML document 10 may be stored in a predetermined storage area in the XML document distribution server 100.

  The creator of the digital content also creates or updates the schema 20 describing the data structure of the XML document 10 and the meaning of each data at the same time as or before or after the creation or update of the XML document 10. The created or updated schema 20 is input to the XML document distribution server 100 via, for example, a predetermined line or medium while being associated with the XML document 10. The input schema 20 may be stored in a predetermined storage area in the XML document distribution server 100.

  Here, an example of the schema 20 according to the present embodiment and elements defined by the schema 20 are shown in FIGS. 2A and 2B, respectively. As shown in FIGS. 2A and 2B (a) to (i), in this example, in the schema 20, a total of nine elements from the first element E1 to the ninth element E9 are defined. Yes.

  Also, an example of the XML document 10 according to the present embodiment and the contents C described in the XML document 10 are shown in FIGS. 3A and 3B, respectively. As shown in FIGS. 3A and 3B, the XML document 10 includes, as an example, contents (contents C described in the XML document) indicating the constituent atoms constituting the molecules of “water” and “carbon dioxide”, respectively. Data is described. Specifically, in the XML document 10, three element definitions 1 to 3 of “atom: atom”, “molecule: molecule”, and “material: material” are described as the contents C described in the XML document. In addition, an attribute value 1 (= “number”: atomic number) and an attribute value 2 (= “name”: name) are described as attribute values for the element definition 1. An attribute value 1 (= “name”: name) is described as a value.

  Here, as is clear from FIG. 3A, the XML document 10 usually has a redundantly-named tag or tag for the purpose of being easy to see and edit for the creator, editor, and confirmer. , Specific character strings such as spaces and line breaks that do not make sense in the data are included. For example, in the example shown in FIG. 3A, the tags include “<”, “? Xml”, “version”, “encoding”, “?”, “>”, “<”, “Material”, “>”, “< ”,“ Molecule ”,“ name ”,“> ”,“ <”,“ atom ”,“ number ”,“ name ”,“ / ”,“> ”,“ <”,“ atom ”,“ number ”, “Name”, “/”, “>”, “<”, “atom”, “number”, “name”, “/”, “>”, “<”, “/”, “molecule”, “> ”,“ <”,“ Molecule ”,“ name ”,“> ”,“ <”,“ atom ”,“ number ”,“ name ”,“ / ”,“> ”,“ <”,“ atom ”, “Number”, “name”, “/”, “>”, “<”, “ "tom", "number", "name", "/", ">", "<", "/", "molecule", ">", "<", "/", "material", and " > "Etc. are described. In addition, the XML document 10 includes a space as an indent for making the data structure easy to see, a line feed indicating a line delimiter, and the like.

  Therefore, in the present embodiment, the redundant description part (specific character string) as described above is converted into one or a specific code having a relatively small number of codes. Thereby, since the XML document 10 is converted into a short XML document (compiled XML document 11 described later), it is possible to reduce the data amount of the distributed digital content (compiled XML document 11). As a result, digital content can be distributed with a good response time even in narrowband communication such as mobile communication and PHS communication.

  As the specific code according to the present embodiment, for example, a code that is not used for describing an XML document in a 1-byte code, that is, a control code other than a character code can be used. However, the present invention is not limited to this, and it is also possible to use a specific character code string that is not likely to be described in the XML document or very unlikely to be described. Below, the case where a control code is used is described as an example. In the present embodiment, as an example, the correspondence between a character string to be converted (such as a tag) and a control code is set as follows. Since the control code cannot be converted into characters, in this description, it is assumed that a code enclosed in “{” and “}” in the following correspondence relationship is a specific control code in the description.

{V}: Control code indicating the version of XML {d}: Control code indicating the end of the XML declaration {s}: Control code indicating the blank {o}: Control code indicating the start of the start tag {c}: Start tag Control code indicating end of character {a}: control code indicating delimiter of attribute value {e}: control code indicating end tag {r}: control code indicating reference {number}: binary code indicating number

  Further, in this embodiment, the compiler 110 in the XML document distribution server 100 in FIG. 1 converts the XML document 10 according to the grammar (that is, the rule for describing data) G as shown in FIG. A completed XML document 11 is created. FIG. 4 is a diagram illustrating an example of the grammar G according to the present embodiment.

  In the compiled XML grammar G shown in FIG. 4, codes delimited by “,” mean that these codes all appear in that order. A code delimited by “|” means that any one of these codes appears. Further, “(” and “)” means that codes enclosed by these are grouped. “*” Means that the immediately preceding code is repeated zero or more times. Furthermore, “?” Means that the immediately preceding code can be omitted. That is, it means that the immediately preceding code appears 0 times or more and 1 time or less.

  The grammar G shown in FIG. 4 will be described in more detail. In the grammar G, as shown in FIG. 4, the compiled XML document 11 is composed of a header (HEADER) and one or more elements (ELEMENT). The header (HEADER) includes a description ({BOM} | CHARSET) that defines the byte order and encoding format of the XML document 10, a control code {v} that indicates the XML version, and a version that describes this version number. A character string and a control code {d} indicating the end of the XML declaration are described in order. Each element (ELEMENT) includes a start tag (STARTTAG), a control code {s} indicating a blank, a text character string or element (ELEMENT), a control code {s} indicating a blank, and a control code {e} indicating an end tag. } Or a reference (REFERENCE).

  The start tag (STARTTAG) is a description including a control code {o} indicating the start of the start tag, an attribute value (ATTRIBUTES), and a control code {c} indicating the end of the start tag. The value (ATTRIBUTES) is a description including an attribute number, an attribute value character string, a control code {a} indicating a delimiter of the attribute value, an attribute number, and an attribute value character string.

  The reference (REFERENCE) is a description including a control code {r} indicating the reference and a number indicating the number of elements (ELEMENT) appearing earlier from the description position in the XML document. That is, in the present embodiment, it is possible to eliminate the description of duplicate elements by using a reference (REFERENCE) sentence that cites an element that appears earlier in the XML document as a grammar. Thereby, in this Embodiment, it becomes possible to reduce the data amount of the compiled XML document 11 more.

  In addition, as described above, the XML document 10 is converted in accordance with the predetermined grammar G to create the compiled XML document 11, so that the receiving terminal 200 can easily compile in accordance with the same grammar G. It is possible to configure to interpret the XML document 11.

  FIG. 4 illustrates the case where the character code is Unicode (UTF). For example, when the character code is other than UTF, that is, there is no {bomb} (: Byte Order Mark), The XML declaration statement “(<? Xml version =“ 1.0 ”encoding =“ Shift_JIS ”?>” Becomes a compiled XML declaration statement with a description such as “Shift_JIS {v} 1.0 {d}”.

  When compiling the XML document 10 according to the above grammar G, for example, the XML document 10 shown in FIG. 3A is converted into a compiled XML document 11 as shown in FIG. FIG. 5 is a diagram showing an example of the compiled XML document 11 according to this embodiment. Here, as is clear from comparison between FIG. 3A and FIG. 5, the compiled XML document (compiled XML document 11) is converted into very short data compared to the pre-compiled XML document 10. Yes.

  Also, the XML document (compiled XML document 11) compiled as described above is converted into a data format usable by the application software 220 by the compiled XML parser 210 in the receiving terminal 200. Unlike a normal XML parser, the compiled XML parser 210 is a parser developed so that an XML document (compiled XML document 11) compiled by the compiler 110 can be interpreted as it is. That is, the compiled XML parser 210 is configured to be able to interpret an XML document described in the grammar G as shown in FIG. 4 without requiring a decoder separately. When the compiled XML parser 210 interprets the compiled XML document 11 received from the XML document distribution server 100 via the network 300, the compiled XML document 11 is input to the application software 220. The application software 220 provides various services realized by the XML document distribution system 1 to the user of the receiving terminal 200 by executing various functions using data input from the compiled XML parser 210.

(Operation)
Next, an XML document delivery method according to this embodiment will be described in detail with reference to the drawings. 6 and 7 are flowcharts showing a schematic operation of the XML document distribution method according to this embodiment. 6 is a flowchart showing an outline of an XML document delivery operation executed by the XML document delivery server 100, and FIG. 7 is a flowchart showing an outline of a content processing operation executed by the receiving terminal 200. That is, the XML document delivery method according to the present embodiment includes an XML document delivery operation executed by the XML document delivery server 100 and a content processing operation executed by the receiving terminal 200. In addition, prior to the XML document distribution operation shown in FIG. 6, it is assumed that the XML document distribution server 100 is input with the XML document 10 created on a PC (not shown) and the schema 20 thereof.

  As shown in FIG. 6, in the XML document distribution operation, the XML document distribution server 100 determines whether or not a digital content distribution request has been received from the receiving terminal 200 after activation (step S101). Wait until it is received (No in step S101). If the result of determination in step S101 is that a digital content distribution request has been received (Yes in step S101), the XML document distribution server 100 includes the XML document 10 corresponding to the requested digital content and its schema 20 Is specified (step S102), and then the specified XML document 10 and schema 20 are input to the compiler 110 to create a compiled XML document 11 (step S103: compilation step). The compiler 110 to which the XML document 10 and the schema 20 are input generates a compiled XML document 11 by compiling the XML document 10 according to the grammar G described above.

  Next, the XML document distribution server 100 transmits the compiled XML document 11 created in step S103 and the schema 20 specified in step S102 to the receiving terminal 200 via the network 300 (step S104). Thereafter, the XML document distribution server 100 determines whether or not an end instruction is input from the administrator or the like (step S105). If not input (No in step S105), the process returns to step S101 to return to the next step. Wait for delivery request. On the other hand, if an end instruction has been input (Yes in step S105), the XML document distribution server 100 ends the XML document distribution operation.

  Also, as shown in FIG. 7, the receiving terminal 200 determines whether or not the compiled XML document 11 is received from the XML document distribution server 100 in response to the previously transmitted digital content distribution request (step S201). The process waits until the compiled XML document 11 is received (No in step S201). When the compiled XML document 11 is received as a result of the determination in step S201 (Yes in step S201), the receiving terminal 200 inputs the received compiled XML document 11 together with the schema 20 to the compiled XML parser 210. Then, the compiled XML document 11 is interpreted (step S202: interpretation step / interpretation process). The compiled XML parser 210 to which the compiled XML document 11 has been input interprets the compiled XML document 11 in accordance with the grammar G described above and based on the schema 20, thereby extracting the data contained therein and requesting it. Get the data. The schema 20 may be shared between the XML document distribution server 100 and the receiving terminal 200 in advance. That is, the schema 20 may be sent to the receiving terminal 200 prior to the XML document 20 and stored in a predetermined storage area (schema holding unit) in the receiving terminal 200. In this case, however, in step 104 shown in FIG. 6, only the XML document 10 is transmitted to the receiving terminal 200. Further, the schema 20 on the receiving terminal 200 side is distributed to the receiving terminal 200 as needed, for example, in response to an update on the content distribution side (that is, re-registration with the XML document distribution server 100).

  Next, the receiving terminal 200 inputs the data obtained by the interpretation in step S202 to the application software 220 (step S203). Note that the application software 220 to which the data obtained by interpretation is input executes various functions using the input data, thereby providing various services realized by the XML document distribution system 1 to the user of the receiving terminal 200. To provide.

  Thereafter, the receiving terminal 200 determines whether or not an end instruction has been input from the user (step S204). If not input (No in step S204), the receiving terminal 200 returns to step S201 to compile the next distribution request. Wait for input of the completed XML document 11. On the other hand, if an end instruction has been input (Yes in step S204), the receiving terminal 200 ends the content processing operation.

  As described above, according to the XML document distribution system 1 and the XML document distribution method according to the present embodiment, a specific character string (tag, space, line feed, etc.) in the XML document 10 is specified with a specific code (control code or XML document). For example, by using a code shorter than the character string to be converted for the specific code, the data amount of the compiled XML document to be distributed can be reduced. It becomes possible to reduce. In addition, since the receiving terminal 200 on the receiving side can directly interpret the compiled XML document 11 in which a specific character string is converted into a specific code, it is possible to avoid a reduction in throughput on the receiving side. It becomes possible. As a result, the XML document distribution system 1, the XML document distribution server 100, the reception terminal 200, and the XML document distribution method capable of reducing the amount of data transferred without impairing the comfort of services that can be enjoyed by the user are realized. can do.

  Note that the XML document distribution system 1, the XML document distribution server 100, the receiving terminal 200, and the XML document distribution method according to the present embodiment include, for example, a CPU (Central Processing Unit) or the like that executes a program for executing each function or process described above. This is realized by reading and executing the information processing apparatus. That is, the compiler 110 and the compiled XML parser 210 shown in FIG. 1 and the XML document delivery operation shown in FIG. 6 and the content processing operation shown in FIG. 7 execute a program written in a predetermined language in the XML document delivery server 100. This is realized by appropriately reading and executing the CPU and the like in the receiving terminal 200 and the like.

  Further, a program that realizes the functions or operations as described above can be stored in a predetermined recording medium such as a hard disk drive, a ROM (Read Only Memory), or a CD (Compact Disk) -ROM. Further, it can be distributed via the Internet or a LAN (Local Area Network). However, it is needless to say that the present invention is not limited to this and can be realized using various methods.

  Further, the above embodiment is merely an example for carrying out the present invention, and the present invention is not limited to these, and various modifications according to specifications and the like are within the scope of the present invention. It is obvious from the above description that various other embodiments are possible within the scope of the present invention.

It is a block diagram which shows schematic structure of the XML document delivery system by embodiment of this invention. It is a figure which shows an example of the schema by embodiment of this invention. It is a figure which shows the element defined by the schema by embodiment of this invention. It is a figure which shows an example of the XML document by embodiment of this invention. It is a figure which shows an example of the element contained in the XML document by embodiment of this invention. It is a figure which shows an example of the grammar by embodiment of this invention. It is a figure which shows an example of the compiled XML document by embodiment of this invention. It is a flowchart which shows the outline of the XML document delivery operation | movement which the XML document delivery server by embodiment of this invention performs. It is a flowchart which shows the outline of the content processing operation | movement which the receiving terminal by embodiment of this invention performs.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Content delivery system 10 XML document 11 Compiled XML document 20 Schema 100 XML document delivery server 110 Compiler 200 Receiving terminal 210 Compiled XML parser 220 Application software 300 Network C Content described in XML document E1 to E9 Element G Grammar

Claims (26)

An XML document delivery system comprising a server capable of delivering an XML document via a network and a receiving terminal capable of receiving the XML document,
The server includes a compiler that generates a compiled XML document by converting a specific character string included in the XML document into a specific code,
The XML document distribution system, wherein the receiving terminal includes a parser that interprets the compiled XML document received via the network and obtains data included in the compiled XML document.   2. The XML document delivery system according to claim 1, wherein the specific code is a control code or a character code string including a plurality of character codes.   3. The XML document distribution system according to claim 1, wherein the specific character string includes at least one of a tag, a space, and a line feed. The receiving terminal maintains a schema for the XML document;
The XML document distribution system according to claim 1, wherein the parser interprets the compiled XML document using the schema. The compiler converts the specific character string included in the XML document into the specific code according to a predetermined grammar,
The XML document distribution system according to claim 1, wherein the parser interprets the compiled XML document in accordance with the grammar.   6. The XML document distribution system according to claim 5, wherein the grammar includes a rule for quoting duplicate descriptions in the XML document. A server capable of delivering an XML document via a network,
A compiler that converts a specific character string included in the XML document into a specific code to create a compiled XML document;
A server that distributes the compiled XML document via the network.   The server according to claim 7, wherein the specific code is a control code or a character code string including a plurality of character codes.   The server according to claim 7 or 8, wherein the specific character string includes at least one of a tag, a space, and a line feed.   The server according to claim 7, wherein the compiler converts the specific character string included in the XML document into the specific code in accordance with a predetermined grammar. .   The server according to claim 10, wherein the grammar includes a rule for quoting a duplicate description in the XML document. A receiving terminal capable of receiving a compiled XML document from a server that distributes the compiled XML document created by converting a specific character string included in the XML document into a specific code, over a network;
A receiving terminal, comprising: a parser that interprets the compiled XML document received via the network and acquires data included in the compiled XML document.   The receiving terminal according to claim 12, wherein the specific code is a control code or a character code string including a plurality of character codes.   The receiving terminal according to claim 12 or 13, wherein the specific character string includes at least one of a tag, a space, and a line feed. A schema holding unit for holding a schema for the XML document;
The receiving terminal according to claim 12, wherein the parser interprets the compiled XML document using the schema. The compiled XML document is described by converting the specific character string into the specific code according to a predetermined grammar,
The receiving terminal according to claim 12, wherein the parser interprets the compiled XML document according to the grammar.   The receiving terminal according to claim 16, wherein the grammar includes a rule for quoting a duplicate description in the XML document. An XML document delivery method for delivering an XML document via a network,
A compiling step of creating a compiled XML document by converting a specific character string included in the XML document into a specific code on the distribution side;
An interpreting step of interpreting the compiled XML document on the receiving side to obtain data included in the compiled XML document;
An XML document delivery method comprising:   19. The XML document delivery method according to claim 18, wherein the specific code is a control code or a character code string including a plurality of character codes.   20. The XML document distribution method according to claim 18, wherein the specific character string includes at least one of a tag, a space, and a line feed. The receiver holds a schema for the XML document,
21. The XML document distribution method according to claim 18, wherein the interpreting step interprets a compiled XML document using the schema. The compiling step converts the specific character string included in the XML document into the specific code according to a predetermined grammar,
The XML document delivery method according to any one of claims 18 to 21, wherein the interpreting step interprets the compiled XML document according to the grammar.   23. The XML document distribution method according to claim 22, wherein the grammar includes a rule for quoting a duplicate description in the XML document. A delivery requesting step in which the receiving side requests the delivery side to deliver the compiled XML document;
The compiling step generates the compiled XML document by converting the specific character string included in the XML document into the specific code when distribution of the compiled XML document is requested. The XML document delivery method according to any one of claims 18 to 23. A program for causing a server capable of delivering an XML document via a network to function.
A program for causing the server to execute a compiling process for converting a specific character string included in an XML document into a specific code to create a compiled XML document. A program for causing a receiving terminal capable of receiving a compiled XML document from a server that distributes the compiled XML document created by converting a specific character string included in the XML document into a specific code via a network. There,
A program for causing the receiving terminal to execute interpretation processing for interpreting the compiled XML document received from the server via the network and acquiring data included in the compiled XML document.

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