JP5236581B2 - Transmitting apparatus, control method therefor, program, and information processing system - Google Patents

Description

  The present invention relates to a technique used when text data is transmitted to a receiving apparatus via a communication line.

  In the Web service, SOAP (Simple Object Access Protocol) is used between the client and the server, and highly versatile communication using XML (Xtensible Markup Language) is possible. Note that the Web service here is a mechanism in which distributed applications cooperate with each other gently by exchanging XML using SOAP on http. In addition, SOAP is a protocol for calling data and services in other computers, and messages are exchanged by XML. Using SOAP enables communication between computers in different environments.

  FIG. 5 is a diagram for explaining an outline of a communication method using XML data based on SOAP. In FIG. 5, registration and search processing instructions are given from a client 500 to a database (DB) connected to an application server (hereinafter referred to as “AP server”) 600 via a network, and the client 500 again sends the result via the network. An example of receiving will be described.

  For example, in the data registration process, an application (not shown) of the client 500 generates data to be registered as an object (binary data) and passes it to the SOAP communication function. The SOAP communication function converts this object into XML data (text data) that can be transmitted by http. The process of converting an object that is binary data into XML data that is text data in this way is called “serialization”. Subsequently, the SOAP communication function transmits XML data to the AP server 600.

  The AP server 600 returns XML data, which is text data, to the object. Processing to return XML data to an object that is binary data in this way is called “deserialization”. The AP server 600 performs processing for registering the data returned to the object in the DB.

  On the other hand, in the process of transmitting the processing results (for example, registration results and search results) from the AP server 600 to the client 500, for example, the AP server 600 performs processing (serialization) for converting an object searched from the DB into XML data. . Then, the AP server 600 transmits (returns) the XML data to the client 500. The client 500 performs processing (deserialization) for converting XML data into an object.

  Note that serialization that converts binary data to text data and vice versa, deserialization that converts text data to binary data is a commonly used technology. Omitted.

  By the way, XML data has a merit of high versatility, but on the other hand, since communication with XML data is performed by tagged text data, the data size is larger than binary data, and the amount of data transmitted and received is large. turn into. Therefore, it is generally not very suitable for large-scale data processing.

  FIG. 6 is a diagram for specifically explaining XML data generated from an object by serialization. In this description, for ease of understanding, in the example of the object, it is expressed by human-readable text data such as “student” and “name AA” displayed in characters, but it is actually composed of binary data. Yes. XML data composed of text data is generated by serializing the object which is binary data.

  As shown in FIG. 6, XML data generated from an object by serialization includes a number of tags corresponding to each attribute in the object, for example, a tag “<name> </ name>” for an attribute “name”. Be placed. Individual data such as “AA” and “male” are described in the portion sandwiched between these tags. As described above, since XML data is text data with a large number of tags, even if the information has the same content, the data size is larger than the binary code, and the amount of data transmitted and received is increased. There is.

  In particular, SOAP has a demerit that communication with XML data requires serialization / deserialization processing on the client and server. As a result, the serialization / deserialization processing increases the memory consumption and causes a problem of performance degradation.

  Patent Document 1 discloses a technique devised to avoid the influence of dangers such as an increase in processing cost due to deserialization, that is, memory consumption and hang-up associated therewith. For example, when a request is made from the client, the XML data is returned from the Web service side. Normally, the client deserializes the XML data, and passes the XML data to the client application as it is. Do that. As a result, deserialization at the client can be omitted, and the processing cost can be reduced.

  However, this only has the effect of not performing the last deserialization in the processing flow of serialization → deserialization → serialization → deserialization performed by the client and the Web service. Accordingly, it is impossible to suppress an increase in the amount of data transmitted / received due to a large number of tags included in the XML data and an increase in the amount of memory consumption for generating the XML data.

JP 2006-260220 A

  As described above, there are many problems in a mechanism for transmitting and receiving data after performing data conversion to XML in a Web service, particularly when large-scale data is transmitted and received and information processing is performed. large.

  Therefore, an object of the present invention is to reduce the amount of data transmitted and received by SOAP and to suppress the memory consumption used for generating XML data.

The transmitting device of the present invention is a transmitting device that transmits text data to a receiving device via a communication line, the conversion means for converting binary data as a target or result of one process into text data, Tag giving means for giving a tag for defining the text data as one element to the text data converted by the conversion means, and the text data to which the tag is given by the tag giving means is the receiving device And transmitting means for transmitting to.
The transmission apparatus control method of the present invention is a transmission apparatus control method for transmitting text data to a reception apparatus via a communication line, and converts binary data as a target or result of one process into text data. A conversion step, a tag addition step for assigning a tag for defining the text data as one element to the text data converted by the conversion step, and the tag given by the tag assignment step A transmission step of transmitting text data to the receiving device.
A program of the present invention is a program for causing a computer to execute a control method of a transmitting apparatus that transmits text data to a receiving apparatus via a communication line, and that is, binary data that is an object or result of one process A conversion step for converting to text data, a tag addition step for adding a tag for defining the text data as one element to the text data converted by the conversion step, and a tag by the tag addition step A transmission step of transmitting the given text data to the receiving device is executed by a computer.

  In the present invention, the binary data that is the object or result of processing for one request is converted to text data, and the text data is sent by adding a tag for defining the text data as one element. The amount of tags attached to text data to be processed is greatly reduced. Therefore, according to the present invention, it is possible to reduce the amount of data transmitted and received and to suppress the amount of memory used for generating XML data.

It is a block diagram which shows the functional structure of the information processing system which concerns on embodiment of this invention. It is a block diagram which shows the hardware constitutions of a client and AP server. It is a flowchart which shows the flow of the process which concerns on the XML data transmission of a client and AP server. It is a figure for demonstrating the conversion process of the data in a client and AP server. It is a figure for demonstrating the outline of the communication method by the XML data by SOAP. It is a figure for demonstrating concretely the XML data produced | generated from an object by serialization.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments to which the invention is applied will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a block diagram showing a functional configuration of an information processing system according to an embodiment of the present invention. As shown in FIG. 1, in the information processing system according to the present embodiment, a client 100 and an AP server 200 are connected via a network such as the Internet, and the AP server 200 is connected to a DB 300 via a LAN.

  The client 100 is a terminal that makes a request such as data search to the AP server 200. The AP server 200 performs a data search for the DB 300 in response to a request from the client 100, and returns the search result to the client 100 as a response.

  The client 100 includes a conversion unit 102, a tag addition unit 104, a transmission / reception unit 106, and a deserialization unit 108 as its functional configuration. Although not shown in FIG. 1, the client 100 has various other functions as will be described later, and the request is issued, for example, in response to a user instruction from application software or the like.

  The conversion unit 102 converts, for example, binary data (object) 101 for which the client 100 requests DB registration into text data 103. Note that information processing is different from conventional serialization. Details will be described later.

  The tag addition unit 104 generates XML data 105 by adding a tag to the text data 103 converted by the conversion unit 102 from the binary data 101 to be registered in the DB. The processing for generating the XML data is different in information processing from the conventional serialization, but details will be described later.

  The transmission / reception unit 106 transmits the XML data 105 generated by the tag addition unit 104 to the AP server 200 or receives XML data 107 corresponding to the binary data 206 of the DB search result from the AP server 200.

  The deserialization unit 108 performs processing (deserialization) for converting the XML data 107 received by the transmission / reception unit 106 from the AP server 200 into binary data 109. The binary data 109 generated here is a search result of the DB 300, for example.

  The AP server 200 includes a transmission / reception unit 201, a tag addition unit 203, a conversion unit 205, and a deserialization unit 207 as functional configurations. Similar to the client 100, although not shown in FIG. 1, the AP server 200 has various other functions as will be described later.

  The transmission / reception unit 201 receives the XML data 105 corresponding to the binary data 101 of the request from the client 100, or transmits the XML data 208 generated by the tag addition unit 203 described later to the client 100.

  The deserialization unit 207 performs processing (deserialization) for converting the XML data 202 received by the transmission / reception unit 201 from the client 100 into binary data 206. The binary data 206 generated here is data to be registered in the DB 300, for example. Note that the XML data 105 emitted from the client and the XML data 202 received by the transmission / reception unit 201 are the same, but will be described with different reference numerals for convenience of explanation.

  The conversion unit 205 converts binary data (object) 206, which is a search result corresponding to the request from the client 100, into text data 204. For example, when the request is data registration in the DB 300, the registration result indicating that the registration is completed is converted into text data 204. Note that information processing is different from conventional serialization. Details will be described later.

  The tag addition unit 203 generates XML data 208 by adding a tag to the text data 204 converted by the conversion unit 205. The processing for generating the XML data is different in information processing from the conventional serialization, but details will be described later.

  The transmission / reception of XML data between the transmission / reception unit 106 of the client 100 and the transmission / reception unit 201 of the AP server 200 is performed by SOAP.

  FIG. 2 is a block diagram illustrating a hardware configuration of the client 100 and the AP server 200 according to the present embodiment.

  The CPU 301 comprehensively controls each device and controller connected to the system bus. The ROM 303 or HD (hard disk) 309 stores a basic input / output system (BIOS) that is a control program for the CPU 301, an operating system program, a program for the processing shown in FIG. .

  In the example of FIG. 2, the HD 309 is configured to be arranged inside the client 100 and the AP server 200. However, as another embodiment, a configuration corresponding to the HD 309 is arranged outside the client 100 and the AP server 200. It is good also as a structure. Also, the program for performing the processing shown in FIG. 3 according to the present embodiment is recorded on a computer-readable recording medium such as a flexible disk (FD) or a CD-ROM, and is supplied from the recording medium. Alternatively, it may be configured to be supplied via a communication medium such as the Internet.

  The RAM 302 functions as a main memory, work area, and the like for the CPU 301. The CPU 301 implements various operations by loading a program necessary for execution of processing into the RAM 302 and executing the program.

  The HD 309 and the FD 308 function as an external memory. The CPU 301 implements various operations by loading a program necessary for execution of processing into the RAM 302 and executing the program.

  The disk controller 307 controls access to external memories such as the HD 309 and the FD 308. The communication I / F controller 306 is connected to the Internet or a LAN, and controls communication with the outside by TCP / IP, for example.

  The display controller 310 controls image display on the display 311.

  The KB controller 304 receives an operation input from the KB (keyboard) 305 and transmits it to the CPU 301. Although not shown, in addition to the KB 305, a pointing device such as a mouse can also be applied to the client 100 and the AP server 200 according to the present embodiment as user operation means.

  1 is stored in, for example, the HD 309, for example, the conversion unit 102, the tag addition unit 104, the transmission / reception unit 106, the deserialization unit 108, the transmission / reception unit 201, the tag addition unit 203, the conversion unit 205, and the deserialization unit 207. This is a configuration realized by a program loaded into the RAM 302 as necessary and a CPU 301 that executes the program.

  FIG. 3 is a flowchart showing a flow of processing related to XML data transmission of the client 100 and the AP server 200. FIG. 4 is a diagram for explaining data conversion processing in the client 100 and the AP server 200. Hereinafter, the processing of the client 100 and the AP server 200 will be individually described with reference to FIGS. 3 and 4.

  First, the operation of the client 100 will be described. For example, the conversion unit 102 of the client 100 converts the binary data 101 to be registered in the DB into text data 103 (step S301). As shown in FIG. 4, the binary data 101 is converted into text data 103 having only a character string shown in the binary data 101 by removing a line feed code and the like. In this description, for the sake of easy understanding, the binary data 101 is expressed by human-readable text data such as “student” and “name AA” displayed in characters. Has been.

  Subsequently, the tag adding unit 104 of the client 100 generates XML data 105 by adding a tag for defining the text data 103 as one element to the text data 103 (step S302). As shown in FIG. 4, XML data 105 is generated here in which <DATA> and </ DATA> are assigned as tags only to the beginning and end of text data 103. Compared with the XML data of FIG. 6 described in the prior art, the number of tags is greatly reduced. The tags <DATA> and </ DATA> are merely examples, and any specific tag name may be used as long as it is a method conforming to XML.

  Subsequently, the transmission / reception unit 106 of the client 100 transmits the XML data 105 to the AP server 200 (step S303).

  Next, the operation of the AP server 200 will be described. The transmission / reception unit 201 receives XML data 202 corresponding to the binary data 101 to be DB registered from the client 100. The deserialization unit 207 converts the received XML data 202 into binary data 206. The text data in FIG. 4 is reproduced by this deserialization processing.

  In this way, the same binary data 206 as the binary data 101 originally generated by the client is reproduced, and registration processing of data to be registered in the DB 300 can be performed. In addition, registration processing and search processing in the DB can use information processing that is generally performed as it is, and detailed description thereof is omitted.

  Next, processing for returning the processing result to the client after registration processing and search processing in the DB 300 will be described. The conversion unit 205 of the AP server 200 converts, for example, binary data 206 as a DB search result into text data 204 (step S301). As shown in FIG. 4, the binary data 206 is converted into text data 204 having only a character string shown in the binary data 206.

  Subsequently, the tag adding unit 203 of the AP server 200 generates XML data 208 by adding a tag for defining the text data 204 as one element to the text data 204 (step S302). As shown in FIG. 4, here, XML data 208 is generated in which tags are attached only to the first and last portions of the text data 204.

  Subsequently, the transmission / reception unit 201 of the AP server 200 transmits the XML data 208 to the client 100 (step S303). Thereafter, the processing of data received by the client 100 is the same as the processing after data reception by the AP server 200 described above.

  In the above-described embodiment, binary data that is a target or result of processing (DB registration, DB search, etc.) for one request is converted into text data, and the text data is defined as one element for the text data. Therefore, the amount of tags in the XML data to be transmitted is greatly reduced. Therefore, according to the present embodiment, the amount of data transmitted and received can be reduced, and the memory consumption used for generating XML data can be suppressed.

  In addition, the client 100 and the AP server 200 may include a dividing unit that divides the text data 103 and 204 generated by the conversion units 102 and 205 with an arbitrary data size. For example, when the text data 103 and 204 has a data size larger than a predetermined threshold stored in a memory or the like, the dividing unit may divide the text data 103 and 204. When the text data 103 and 204 are divided by the dividing unit, the tag assigning units 104 and 203 assign a tag for defining each text data as one element to each divided text data. Thus, XML data is generated for each text data.

  When XML data is generated for each text data after performing such a dividing process, a process of combining the divided text data occurs on the receiving side. Therefore, in preparation for the case of generating XML data by dividing, each computer on the transmission / reception side is also provided with a combination processing unit. When generating XML data by dividing, the tag assigning units 104 and 203 assign tags to the tags themselves according to predetermined rules, such as <DATA1>, <DATA2>... In addition, when the combination processing unit of the receiving computer receives the tags <DATA1>, <DATA2>..., The XML data is combined into one, and then the deserialization unit removes the tag to obtain binary data. The process of becoming.

100: Client 101, 109, 206: Binary data 102, 205: Conversion unit 103, 204: Text data 104, 203: Tab assignment unit 105, 107, 202, 208: XML data 106, 201: Transmission / reception unit 108, 207: Deserialization unit 200: AP server 300: DB

Claims (5)

A transmitting device that transmits text data to a receiving device via a communication line,
A conversion means for converting binary data as a target or result of one process into text data;
Tag giving means for giving a tag for defining the text data as one element to the text data converted by the converting means;
A transmission device comprising: a transmission unit configured to transmit the text data to which the tag is added by the tag addition unit to the reception device. Further comprising a dividing means for dividing the text data converted by the converting means;
The tag assigning means, when the text data is divided by the dividing means, gives a tag for defining each of the text data as one element to each divided text data. The transmission device according to claim 1. A method of controlling a transmitting device that transmits text data to a receiving device via a communication line,
A conversion step for converting binary data as a target or result of one process into text data;
A tag providing step of adding a tag for defining the text data as one element to the text data converted by the converting step;
A transmission step of transmitting the text data to which the tag has been assigned in the tag addition step to the reception device. A program for causing a computer to execute a control method of a transmitting device that transmits text data to a receiving device via a communication line,
A conversion step for converting binary data as a target or result of the same processing into text data;
A tag providing step of adding a tag for defining the text data as one element to the text data converted by the converting step;
A program for causing a computer to execute a transmission step of transmitting the text data to which a tag has been added in the tag addition step to the receiving device. An information processing system in which a transmission device and a reception device transmit and receive data via a communication line,
The transmitter is
Serialization processing means for converting binary data as a target or result of the same processing into text data;
Tag giving means for giving a tag for defining the text data as one element to the text data converted by the serialization processing means;
Transmitting means for transmitting the text data to which the tag is attached by the tag attaching means to the receiving device;
The receiving device is:
Receiving means for receiving the text data to which the tag is attached from the transmitting device via a network;
An information processing system comprising: deserialization processing means for removing a tag for defining the text data as one element from the received text data and converting the text data into object data.

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